New Garrett G-Series turbos!

[PoorMans180SX]

These look perfect for smaller displacement engines! Finally some new turbines in the long-in-the-tooth Garrett lineup. Mar-M super alloy! Definitely some cool stuff. Hopefully more are headed our way.

https://i.imgur.com/s79wZ6I.jpg

https://www.full-race.com/blog/garrett-g-series-turbochargers/

[gaz_moose]

not that I know much about turbo's but the numbers on the 550 turbo look well small.

a gt2860rs has inducer 47,exducer 60 ar 60 and exhaust exducer 54 and this new turbo is gonna give you 200hp more.

a efr 6758 is inlet inducer 54 exducer 67, exhaust exducer58 and wont do 400 on an sr20

[PoorMans180SX]

not that I know much about turbo's but the numbers on the 550 turbo look well small.

a gt2860rs has inducer 47,exducer 60 ar 60 and exhaust exducer 54 and this new turbo is gonna give you 200hp more.

a efr 6758 is inlet inducer 54 exducer 67, exhaust exducer58 and wont do 400 on an sr20

Think you might be confused mate, a 6258 will do 400whp on an SR20 on E85...

[RalliartRsX]

not that I know much about turbo's but the numbers on the 550 turbo look well small.

a gt2860rs has inducer 47,exducer 60 ar 60 and exhaust exducer 54 and this new turbo is gonna give you 200hp more.

a efr 6758 is inlet inducer 54 exducer 67, exhaust exducer58 and wont do 400 on an sr20


A 6758 will make 450WHP on a SR on full song. A 7163 will make over 500WHP on a SR.

I think your (HP) figures on the EFR are........incorrect.

Also, EFRs are NOT dyno queens. The biggest mistake people always make with EFRs is comparing strictly on a piece of paper without actually experiencing one.

[EDacIouSX]

what really interests me is if they will offer a direct bolt on replacement for stock s14/s15. They offer stock upgrades for the GT and GTX, GTX II series so I'm hoping they will offer one for this new G series. It's so much easier going bottom mount and running off the shelf parts.

[TheRealSy90]

Bottom mount external gated stock manifold is where its at lol. Wish I had finished my TD06 setup on stock manifold lol.

[PoorMans180SX]

what really interests me is if they will offer a direct bolt on replacement for stock s14/s15. They offer stock upgrades for the GT and GTX, GTX II series so I'm hoping they will offer one for this new G series. It's so much easier going bottom mount and running off the shelf parts.

Yeah but 5-bolt downpipes and bolted inlets and outlets suck. Plus if you’re really talking about replacing the compressor cover, you’re probably going to be sacrificing flow. They make an internal gate T25 housing, I’m sure adapting it won’t be hard.

[RalliartRsX]

I am glad they finally redesigned thier 30+ year old wheel design. The GTX billet wheels were fantastic and they always lacked in turbine wheel, which is where the meat of the potatoes exists.

Curious to see how these compare to the EFRs. The race is on!

[tuzzio]

I'm really only interested in seeing side by side comparisons of its similarly sized garrett competitors. Say its sizable to a 2871. I want to see side by side data on both.

[pacotaco345]

which is where the meet of the potatoes exists.

*Meat and potatoes

[RalliartRsX]

*Meat and potatoes

Hahaha! Thanks :):kiss:

[tuzzio]

What im trying to gather here is how the hell this tiny turbo is good for 550whp?

if this is true im throwing my gtx3076 in the trash cause I'd imagine this thing is going to have instant spool on a ka.

[brndck]

What im trying to gather here is how the hell this tiny turbo is good for 550whp?

if this is true im throwing my gtx3076 in the trash cause I'd imagine this thing is going to have instant spool on a ka.
you and me both. I've got a gtx3071 for sale if this pans out!

[PoorMans180SX]

Here is the G25 550 in red, and the GTX2867R Gen II in white. The maps are scaled horizontally, but not vertically. Still shows what it needs to. The G25 compressor coupled with the new higher flowing turbine should be killer.

https://i.imgur.com/Ehl5aOd.jpg

[TheRealSy90]

It seems like if scaled vertically the maps would almost be right on top of each other.

[RalliartRsX]

It seems like if scaled vertically the maps would almost be right on top of each other.

Seems that way to me

However, the 7163 EFRs (just an example) were supposed to be 500 BHP turbos and the EVO boys are squeezing 600 WHP+ from them (over 700BHP).

If factoring real life, the real test is in drivability, power under the curve, boost response, etc since they have a newly designed wheel.

However, looking through all the similarities, they almost "literally" pulled the description and design (twin entry cooling ports on both sides of the housing, G series design turbine wheel, oil restrictor fitting in the housing, speed sensor, compact V band outlet, etc etc) straight from the EFR turbos. Garrett literally lifted just about every design feature from the EFR........Apart from the packaging with the internal gate, I will still stick with my EFR unless proven otherwise as the MAPS do not seem to pose an improvement over the standard GTX. If they make a bolt on with a good flowing gate however..........

That goes to show how far ahead of the game EFRs were to Garrett.

[tuzzio]

Also, whats the speed sensor for? Is it required?

When I was turbo shopping last year I wanted to look into an EFR, but there wasn't enough information on the KA for a platform with a similar set up to me because 240 owners are cheap fucks.

[PoorMans180SX]

It seems like if scaled vertically the maps would almost be right on top of each other.

Close, but as you can see, the new 60mm wheel outflows the GenII 67mm wheel. Pretty impressive.

[RalliartRsX]

Also, whats the speed sensor for? Is it required?

.

Gamma-ti wheel and overspeeding. Keep it under 140,000 RPM is the general consensus for the B1 frames.

But again, evo boys making 600+ WHP what would consider serious overspeed, but I have not seen any failures as of yet (only engines going kablamooo)

[[email protected]]

Last Garrett turbo i sold was leaking out of the box, this is the 4th time i have something like this happen. I have no more faith in Garrett, Borg Warner is where it's at!

[codyace]

Close, but as you can see, the new 60mm wheel outflows the GenII 67mm wheel. Pretty impressive.

agreed! crazy to see how far the tech has come in just a short amount of time

[EDacIouSX]

Seems that way to me

However, looking through all the similarities, they almost "literally" pulled the description and design (twin entry cooling ports on both sides of the housing, G series design turbine wheel, oil restrictor fitting in the housing, speed sensor, compact V band outlet, etc etc) straight from the EFR turbos. Garrett literally lifted just about every design feature from the EFR........Apart from the packaging with the internal gate, I will still stick with my EFR unless proven otherwise as the MAPS do not seem to pose an improvement over the standard GTX. If they make a bolt on with a good flowing gate however..........

That goes to show how far ahead of the game EFRs were to Garrett.



So do these turbos out perform borg warner turbos? Honestly if they're a copy paste of borg warner tech, that is just lame... rather go w/ borg warner at that point.

[Kingtal0n]

four cylinder turbo is amazing.

everything I've seen with v8's still has me constantly saying, "well, the 4-cylinder might not XXX but it sure can YYY" and giving my old SR credit. The thing that killed it for me was the clutch, constant traffic here took the fun out of it. And 4-cylinder auto just doesn't seem right.

Oh, the thread title. Right. So you guys realize that you are basically comparing 77% efficient compressors with "~76%" efficient compressors, right? Like, one turbo isn't "better" because it's compressor map is bigger, that just means the compressor is bigger. You are getting a very similar compressor discharge temperature across the board.

The performance aspect you are looking to compare isn't in the compressor map at all; that aspect is supported by how the dynamics of the exhaust plays out, not only the turbine wheel but what comes before/after that wheel. In other words, when comparing two similar sized compressors at say, 20psi, both discharge very similar temperatures of air if they are in similar regions of the compressor map (both maps look the same right). So any significant difference in power isn't going to be due to the compressor, comparing mass flow rate and looking at the map isn't going to reveal these discreet behaviors.

[PoorMans180SX]

four cylinder turbo is amazing.

everything I've seen with v8's still has me constantly saying, "well, the 4-cylinder might not XXX but it sure can YYY" and giving my old SR credit. The thing that killed it for me was the clutch, constant traffic here took the fun out of it. And 4-cylinder auto just doesn't seem right.

Oh, the thread title. Right. So you guys realize that you are basically comparing 77% efficient compressors with "~76%" efficient compressors, right? Like, one turbo isn't "better" because it's compressor map is bigger, that just means the compressor is bigger. You are getting a very similar compressor discharge temperature across the board.

The performance aspect you are looking to compare isn't in the compressor map at all; that aspect is supported by how the dynamics of the exhaust plays out, not only the turbine wheel but what comes before/after that wheel. In other words, when comparing two similar sized compressors at say, 20psi, both discharge very similar temperatures of air if they are in similar regions of the compressor map (both maps look the same right). So any significant difference in power isn't going to be due to the compressor, comparing mass flow rate and looking at the map isn't going to reveal these discreet behaviors.

Except when one compressor is significantly smaller, meaning less mass and intertia... and when the compressor is more efficient, the turbine has to do less work, and when the turbine is more efficient, you get less emap...

[Kingtal0n]

Except when one compressor is significantly smaller, meaning less mass and intertia... and when the compressor is more efficient, the turbine has to do less work, and when the turbine is more efficient, you get less emap...

You can't see compressor wheel mass on a compressor map, and you can't see somebody's exhaust setup or camshaft/head setup over the internet, which all will affect turbine work.


that aspect is supported by how the dynamics of the exhaust plays out, not only the turbine wheel but what comes before/after that wheel.

Its exactly what I said

[PoorMans180SX]

You can't see compressor wheel mass on a compressor map, and you can't see somebody's exhaust setup or camshaft/head setup over the internet, which all will affect turbine work.



Its exactly what I said

Must be some new super dense aluminum for a wheel smaller in every dimension not to be lighter...

We’re not comparing engines here, we’re comparing turbos. The turbine to compressor relationship stays the same on every turbo, regardless of the engine it’s attached to.

This is a discussion. Nobody is trying to prove that this is the latest and greatest turbo of all time. I’m simply excited for new possibilities and am comparing it in ways I can to others currently on the market. It’s fun and interesting to me.

[gaz_moose]

Think you might be confused mate, a 6758 will do 400whp on an SR20 on E85...

we don't really get E85 over here in England. (well not easily)

have they released any prices for these new garrett's yet?

[RalliartRsX]

we don't really get E85 over here in England. (well not easily)

have they released any prices for these new garrett's yet?

It will make 400 HP on pump........

2K for far for street pricing

[PoorMans180SX]

we don't really get E85 over here in England. (well not easily)

have they released any prices for these new garrett's yet?

I meant 6258 when I typed it...

this is 6258, E85, stock cams, greddy intake.

https://i.imgur.com/H83iaup.jpg

[PoorMans180SX]

MotoIQ breaking down these vs Gen1 and 2 GTX. Some nice info about turbine work vs compressor and the reduction in intertia from smaller wheels that flow more.

http://www.motoiq.com/MagazineArticles/ID/4666/Nerd-O-Scope-Honeywell-Garretts-G-Series-Turbochargers.aspx

[metako42]

Last Garrett turbo i sold was leaking out of the box, this is the 4th time i have something like this happen. I have no more faith in Garrett, Borg Warner is where it's at!

I'm interested to know where they were leaking from? Comp housing? Exhaust housing?

[LuckyX2]

The turbine on the G25-660 is only 85% the size of the EFR7163 and the compressor is 94% the size yet it flows the same. Efficiency is 79% vs 74% on the EFR. Hands down, Garrett's turbine/compressor aero is better. The only thing keeping the EFR competitive is the TiAl turbine material, if Garrett made a TiAl version of the G25-660 it'd be no contest.

[PoorMans180SX]

The turbine on the G25-660 is only 85% the size of the EFR7163 and the compressor is 94% the size yet it flows the same. Efficiency is 79% vs 74% on the EFR. Hands down, Garrett's turbine/compressor aero is better. The only thing keeping the EFR competitive is the TiAl turbine material, if Garrett made a TiAl version of the G25-660 it'd be no contest.

Tial wheels necessitate a different design due to strength characteristics, and let’s not forget about the mixed flow wheel, which does bring the turbo online faster. Efr’s also have the built in recirc valve and a cost advantage at this point. Garrett definitely has built what seems to be some fantastic competition here though!

I’m excited for further products in the G-series line. The next step up in turbine size is going to get real rowdy!

[PoorMans180SX]

Alright, who's got 'em? Post results here!

[cured13]

The're all crashed and scrapped already, lol.
Keep saving $$$$, haha
This is new hotness now
https://specials-images.forbesimg.com/imageserve/5da7287bdb402600062036c0/960x0.jpg?fit=scale

[slider2828]

^^That is antilag on a battery.... I guess sooner or later gotta have a bigger battery and a bigger alternator..... cool stuf thanks for sharing!

https://www.caranddriver.com/news/a32891748/mercedes-amg-and-garrett-e-turbo-engines/

[tuzzio]

Here for results. wish I wasn't so cheap..haha

[RalliartRsX]

Alright, who's got 'em? Post results here!

Check out the on point dyno guys with the green SR powered drift car. Its on the boobtuuubbbee

[pacotaco345]

^^That is antilag on a battery.... I guess sooner or later gotta have a bigger battery and a bigger alternator..... cool stuf thanks for sharing!

https://www.caranddriver.com/news/a32891748/mercedes-amg-and-garrett-e-turbo-engines/

Imagine if you used the antilag motor in the CHRA as a generator when you got to your desired boost level.. i.e. no wastegate, just turn it into an electric brake that limits the turbine speed and feeds back into the battery. Then you get rid of the wastegate AND the bigger alternator

[spooled240]

All I can think of is all the transmissions I'd be breaking LOL

[PoorMans180SX]

Imagine if you used the antilag motor in the CHRA as a generator when you got to your desired boost level.. i.e. no wastegate, just turn it into an electric brake that limits the turbine speed and feeds back into the battery. Then you get rid of the wastegate AND the bigger alternator

This is how modern F1 cars function.

Check out the on point dyno guys with the green SR powered drift car. Its on the boobtuuubbbee

Yeah I've seen it, was just curious about other combinations.

[pacotaco345]

This is how modern F1 cars function.


Mhm


Sent from my iPhone using Tapatalk

[e30gangsta]

Here for results. wish I wasn't so cheap..haha

Lz has a video on his built Sr with a g25-550 on the Dyno. Iirc it made 500 on stock fuel lines or very close to it. With solid response on a stock intake manifold. If I was to run one of these it would be with a mazworx intake manifoldz or the stock intake manifold and have it extrude honed.

[e1_griego]

^^Just shy of 500whp on e85 and stock intake manifold. Though I think it was like 95* on that day, too.

I'm planning to grab one this winter -- still undecided between the 550 or 660 (leaning towards 660 because why not?), but I bought the mazworx intake manifold already...

[Colorado S14]

Where is the best bang for the buck in the market right now? New G-Series or EFR, or ?.

[tb13]

^^Just shy of 500whp on e85 and stock intake manifold. Though I think it was like 95* on that day, too.

I'm planning to grab one this winter -- still undecided between the 550 or 660 (leaning towards 660 because why not?), but I bought the mazworx intake manifold already...

His setup made really impressive power, I picked up a G25-550 after seeing that and talking to some friends.

My SR is built with slightly bumped compression, ported/polished head, Tomei 260 cams, Greddy manifold and will be on ethanol. I've got the .72 housing on mine, kinda worried its going to be a choke point, but we'll see once I get its a little later this year. Will report back with numbers!

https://i.imgur.com/HxADC4Yh.jpg

[PoorMans180SX]

His setup made really impressive power, I picked up a G25-550 after seeing that and talking to some friends.

My SR is built with slightly bumped compression, ported/polished head, Tomei 260 cams, Greddy manifold and will be on ethanol. I've got the .72 housing on mine, kinda worried its going to be a choke point, but we'll see once I get its a little later this year. Will report back with numbers!

https://i.imgur.com/HxADC4Yh.jpg

Very nice setup. IMHO I think it would make more sense to move to the G30-660 than run a big turbine housing on the G25's. If you are looking for response, I think you'll be really happy with that setup.

[e1_griego]

^That's kind of where i'm at. Either g25-660, or g30-660. From look at ATP it seems they run the same inlet/outlet flanges, too, so easy enough to swap around.

[tb13]

Very nice setup. IMHO I think it would make more sense to move to the G30-660 than run a big turbine housing on the G25's. If you are looking for response, I think you'll be really happy with that setup.

Response was the main focus of the setup, if I make 400whp and have near instant response I think I'll be happy. Car will probably stay a street car for a while, but if it ever transitions to a mainly track car and want some more top end the G30-660 would probably be the way to go.

^That's kind of where i'm at. Either g25-660, or g30-660. From look at ATP it seems they run the same inlet/outlet flanges, too, so easy enough to swap around.

Speed Academy on YouTube just swapped from a G25-660 to a G30-660 on their STi and saw great top end gains. Even with the larger exhaust wheel on The G30 and a larger A/R housing they didn't lose much low end on the EJ207 that is in the car.

[e1_griego]

Literally watching that right now haha.

Making me lean towards the g30 for sure.

[tb13]

Literally watching that right now haha.

Making me lean towards the g30 for sure.

Seeing their results, a G30-660 with the .83 A/R housing would probably be the sweet spot for a 500whp SR with insane response.

I'm really considering getting the Garrett turbine wheel speed sensor for my setup too after seeing AdamLZ explode one on his car. Considering the response people are seeing running these turbos, I could see it being important to keep an eye on turbine speed while tuning to ensure longevity. Would also be really cool to compare this data vs a G30 on an SR with a similar setup.

[e1_griego]

Seeing their results, a G30-660 with the .83 A/R housing would probably be the sweet spot for a 500whp SR with insane response.



Exactly what I'm thinking.

[tuzzio]

That thing doesn't look as bad top mounted as I thought it would.

[e30gangsta]

I saw that video as well. They lost a lot of response under the curve though almost 1000 rpm. I'd shoot for the g25-660 before the g30-660 to try to keep the response as best as possible.

[RalliartRsX]

I don't know if I'm down with the speed academy results. Not only did they lose 1000 rpm in spool, they really tried to play it down/off as no big deal on the street

Also they never discuss boost tip in/recovery at all

Sorry, I'm just not buying what speed academy is selling and disappointed in the test/results if they really were focused on response. Even Pete at one point was like "yeah it falls out of boost between shift but hey its cool....."

[PoorMans180SX]

Seeing their results, a G30-660 with the .83 A/R housing would probably be the sweet spot for a 500whp SR with insane response.

I'm really considering getting the Garrett turbine wheel speed sensor for my setup too after seeing AdamLZ explode one on his car. Considering the response people are seeing running these turbos, I could see it being important to keep an eye on turbine speed while tuning to ensure longevity. Would also be really cool to compare this data vs a G30 on an SR with a similar setup.

Yeah if you're running any turbo hard and get a decent size boost leak, that thing is going to spin to the moon. Always good to have turbo speed on a serious setup.

I saw that video as well. They lost a lot of response under the curve though almost 1000 rpm. I'd shoot for the g25-660 before the g30-660 to try to keep the response as best as possible.

They went larger with the exhaust housing as well. This kinda makes the test moot. These kinds of things have already been shown to happen in the EFR lineup. If you're going to move to a bigger turbine housing, you might as well move up a whole turbo size, because they spool roughly the same, but the bigger turbo just makes more power. It's the same thing with the GTX gen II. If you had a 3076 and were thinking about moving up in turbine housing size, it was a much better idea to go to the GTX3576, because it spools identically, just makes more power.

I don't know if I'm down with the speed academy results. Not only did they lose 1000 rpm in spool, they really tried to play it down/off as no big deal on the street

Also they never discuss boost tip in/recovery at all

Sorry, I'm just not buying what speed academy is selling and disappointed in the test/results if they really were focused on response. Even Pete at one point was like "yeah it falls out of boost between shift but hey its cool....."

Yeah, they do goofy things with their turbo sizing. A stock cam EJ207 isn't exactly a top-end kind of engine hah. Of course they need huge exhaust flow to cram all that air in that anemic engine. I thought it was hilarious when they moved up in turbine housing size on the G25 and gained basically zero top end. This proves that the turbine is always the biggest restriction. If someone is shooting for response, I always recommend they run a turbine that will flow the power they need in the smallest (reasonable) turbine housing.

To put it in perspective, I have personally seen a G25-660 in a .92 housing make 505whp on E85 on an Evo X. AdamLZ's SR20 made just shy of 500whp on the 550 with mild cams! The EJ just doesn't make power.

I did think it was funny how they were trying emphasize how much faster it "feels"...well yeah, it makes 100 more whp... and how they said that the spool really wasn't noticeable or even better on the street... like naw guys, you just have a goofy setup haha.

As a side note, the G25-660 has a turbine to compressor diameter difference of 13mm. That's pretty significant on such a small turbo, and kind of fits Garrett's classic mistake of "big compressor, little turbine" in the name of "response". This usually affects transient response the most, and I bet if you put the two turbos back to back on the same engine, the 660 would be less than impressive in it's power gain/response loss.

I'm not claiming that I'm some turbo knowledge god, but I nerd out on this shit and I've seen a ton of different turbo setups. These are my educated theories.

[e30gangsta]

What I really want to see is a g25-550/g25-660 with some jwt s4hl cams on a det full tilt. Just so we can actually know what exactly were looking at for peak det performance without a vvl upgrade.

[RalliartRsX]

Poorman you pretty much sum up what I was thinking.

Garret, for years, have had an outdated turbine wheel. Shoot, the old outgoing wheels were coming along on 40+ years old and all they did was address the compressor wheel. Sweet, I just squeezed 100WHP more of heat at the same boost level, with none of the benefits of a more efficient turbine wheel. That causes all sorts of imbalance issue......more evident in the shitty tip in and boost recovery...the shit that actually matters on the street and track

There is a reason manufacturers do not give out turbine wheel maps. Because that is where is magic is and Garrett has paid little attention for the aftermarket as they had little competition a decade ago. That has changed drastically.....

The speed Academy results are........not something I would hang my hat on. The EJ series of engines have a really shitty flowing head, long runners to the turbo and overall, is not a good design. The new FA20 is much improved.

Now, I am not shitting on the new G series. I am shitting on the Speed Academy mischaracterization of the results.

[RalliartRsX]

Stick with the G25-550, a good flowing head and go break some hearts. I would not be stepping up to the G30-660 unless I have a VET, B series v btec or a K series head in terms of flow if I want a useful rev range

[e30gangsta]

I'm waiting for driftcrash's channel on YT to post his g25-660 Dyno sheet. So I can compare how much laggyer it is than a g25-550. I just want to see how much later the power comes on.

[S14rebuild]

How would yall compare it to a gt3071r? .63 rear housing

[PoorMans180SX]

How would yall compare it to a gt3071r? .63 rear housing

A standard, GT-series GT3071r? A g25-550 would absolute shit on it everywhere. Your whole powerband would just move up and to the left.

Poorman you pretty much sum up what I was thinking.

Garret, for years, have had an outdated turbine wheel. Shoot, the old outgoing wheels were coming along on 40+ years old and all they did was address the compressor wheel.

To be fair, a more efficient compressor wheel does mean the turbine has to do less work, so it's kind of a "rising tide raises all boats" kinda deal. Your point is definitely valid though, which is why EFR's just shit on everything when they were introduced. It's nice to see other manufacturers stepping up. The new Xona rotor stuff looks pretty cool too. Hard to find guys outside of drag racing using them though.

[PoorMans180SX]

Found this on NRR. Told you so to all those people that think they need the big turbine housing. :nono:

Here is a Dyno Graph on a local Dyno Pack Hub Dyno from UMS Tuning. It is a High Compression (I 10:1 believe) S14 Sr20, 0.72 EWG G550 turbo. 517whp & 447wtq at 25psi. E85 I believe. It still had more to go as well. Not my car BTW.

https://i.imgur.com/Rkl3eRc.jpg

https://i.imgur.com/V6NI8AF.jpg

https://i.imgur.com/oZfdzbW.jpg

https://i.imgur.com/jcJOvbd.jpg

[jr_ss]

Found this on NRR. Told you so to all those people that think they need the big turbine housing. :nono:

It would be interesting to see it rev out more. 7500 isn't really that extreme, however, great power at 4K rpm. Also E85 though. Pump gas would be great to lay overtop to see the difference.

[brndck]

Found this on NRR. Told you so to all those people that think they need the big turbine housing. :nono:

excellent numbers. really making me reconsider the GTX3071 I have for my sr20vet. Might hafta toss that on the sr20det in the missile car and order a new setup for the other engine.

[S14rebuild]

^just sold my old precision, and got a gt3071r for my sr setup..wonder if ill be replacing the turbo with one of these...hmmm

[e30gangsta]

I am curious if that motor had cams, or if the vct was engaged at all.

[Colorado S14]

What do you guys think for an extreme response KA24DET set up? I am in Denver, assume a density altitude of 7000 feet, hard on turbos. In the process of rebuilding from a blown engine. Looking for a machine with the ultimate in response and an uncorrected 400whp on 91.

[jr_ss]

I am curious if that motor had cams, or if the vct was engaged at all.

It is hard to tell from the picture if the VTC solenoid is intact. If it was, I would expect it helped decrease the spool. It really does help these motors make peak trq much sooner in the RPM band.

I took a better look, the solenoid is there.

[PoorMans180SX]

It is hard to tell from the picture if the VTC solenoid is intact. If it was, I would expect it helped decrease the spool. It really does help these motors make peak trq much sooner in the RPM band.

I took a better look, the solenoid is there.

It's impossible to tell spool from a dynapack dyno anyway. They always have parabolic torque curves which don't accurately reflect loading when on the road.

Regardless, this turbo is a phenomenal performer, and doesn't need the .92 housing to reach it's flow potential on a two liter. The G25-660 doesn't seem like it can flow much more with this turbine on the other hand, regardless of housing.

Here's another find, KA24 with a G30-660. I've asked him to post the dyno graph if he has it.



Almost finished engine bay setup, prior to the dyno session.
https://i.imgur.com/LoUaPC8.jpg

The car did great at the dyno session making 470hp 480tq on a mustang dyno...
A view of the course at Mid State Airport in Pennsylvania. The car felt like a new animal on my first run, much more responsive than the old GT2871 and the extra power would spin the 315's with ease. The trans 2nd gear ratio (2.077) is shorter than the stock S13 trans (1.902) which ended up having me doing 66mph at my redline of 7400 when i was used to doing 73mph. It sure felt like i was on limiter in a lot of places and I'm figuring with the response and power that i was just reaching 66 that quickly on this course (the clutch and TOB appeared to see a lot of heat : more in later posts).

On my last run, which ended up being a re-run is when all of the fun came to an end, with the engine blowing the #3 rod out of the block..

[tuzzio]

I have a LOT of questions about that KA set up. Thats fucking stout, for sure.
Sucks not having E85 conveniently available though. I'd turn my KA up for sure.

Edit: Poorman, can you start providing links to where you're finding this shit? I love forums and I'd definitely like to hear more about that setup

[e1_griego]

https://www.nissanroadracing.com/forum/universal-discussion/introduction-builds/172861-scores240-forever-build-2019-version?p=173011#post173011

[tb13]

Found this on NRR. Told you so to all those people that think they need the big turbine housing. :nono:

Sheesh, posts like that get me really excited to get my car running. Those numbers are really impressive, interested to know why they stopped at 7500rpm.

Tony at UMS will be tuning mine as well, my car is setup for flex fuel so I'll be able to show an pump gas and ethanol chart on an S13 SR.

[RalliartRsX]

Stop stealing posts from NRR hahahahahah!

[PoorMans180SX]

Stop stealing posts from NRR hahahahahah!

Just doing what I can to spread the good news! Hahahaha

[PoorMans180SX]

Stock block KA24DE .83 turbine G30-660

Comparison of G30-660 to the old SR hybrid manifold / GT2871R setup.
https://i.imgur.com/GAXowjOh.jpg

[2_Liter_Turbo]

You could just have this discussion on NRR where you're pulling all the info from, lol. Most people in this thread are on there as well.

[PoorMans180SX]

You could just have this discussion on NRR where you're pulling all the info from, lol. Most people in this thread are on there as well.

Meh, this forum has a lot more traffic, and these are mostly posts in different people's threads. It's nice to have it all in one location.

EDIT: I'll start a thread in the forced induction section.