GT3071r Bottom Mount ????

[Dj Ryderz]

I search but I don't find a clear answer. Is a GT3071r .64 will fit on a bottom mount manifold.

I was thinking about this one : Garrett GT3071R Dual Ball Bearing Turbo Internal Wastegated (http://www.frsport.com/Garrett-GT3071R-Dual-Ball-Bearing-Turbo-Internal-Wastegated_p_13892.html)

And going with the Tomei Exprem manifold.

So any experience ????

[slider2828]

Sure it will fit, I heard you have to grind the housing down a little to fit.....

Overall people don't recommend it because it doesn't bring out the potential of the GT30 on a top mount....

Search its been asked many time

[garagelu]

Yes it will fit but you will have to grind down the motor mount bracket.

[s15specR]

i've seen opne fit without any grinding, on the same manifold as well, not sure ????????

[water]

T2 GT3071r's are dog shit. Get a gt2871r if you're staying t2.

[slider2828]

Yup I agree with water

[s15specR]

T2 GT3071r's are dog shit. Get a gt2871r if you're staying t2.


Yes sir almost the same power lots less lag

[Zerolift Autolab]

Gt3071R belongs on the Top external wastegate !

2871R bottom mount even the big exhaust side will still spool decent and make 350+

[hitman]

doesnt matter if its on the top or bottom
it matters trim, wastegate style, housing, etc
you can mount the "top mount" 3071 bottom mount, and its the same thing

[KA-T_240]

Also look into the gt2876r

[remi]

How come no one makes a bottom mount manifold with a T3 flange? I know that the 3071 is pointless without the T3 flange, but for the guys that wanna stay bottom mount, why not just have a different flange welded on?

[slider2828]

Thats true too, but it does make a difference T2 or T3 flange... Flow is different.....

[s15specR]

there's a few bottom mount t3, nuekin makes one, don't know anyone that runs it though.

[Dj Ryderz]

Thank you all of you for the clarification.

After long internet searching, I found the PeakBoost SR20DET package deal (http://cheapturbo.stores.yahoo.net/pesrpa.html)
It's sound interesting on the range of price/quality but they say (Garrett T3/TO4E Turbocharger of your choice) I don't know this turbo... I don't think its inclube the Garrett GT series, correct me if I'm wrong. Anyway what you think of this kit & which
turbo take ..... I would like to reach 380-400whp with safe marge.

[kalypso123]

hybrid t3/t04e is not a dual ball bearing turbo so the shaft doesnt spin with the same responsiveness, so you get a little more lag... and in some cases a lot but.

till this day I havent been able to completely reconcile all the gt series hype because I know of some BW and holset turbos at the same lbs/min that can spool just as fast so... still have a lot of research to do. but whatever :)

everyone here is right about t3 housings... they can flow more air, whether they point up or down.

I do think bottom mount accumulates more heat tho... but it could be the opposite... testing is god.

[slider2828]

Bottom mount actually don't heat up more in terms of heat, but it limits again on responsiveness because the lack of having an external wastegate. I mean there are housings that have a built in V flange on it, hence ATP's special turbine housing, but truly top mounts have all the external wastegate setups you want.

[Dj Ryderz]

Ok Ill go T3 topmount with GT3071R

So for the manifold setup ive seen this one thats look decent. I know it's ebay but look like a gap over the other. Pretty much a copy of the peak boost. http://cgi.ebay.ca/Top-Mount-Kit-Nissan-240SX-T3-SR20DET-Turbo-Manifold_W0QQitemZ110347737634QQcmdZViewItemQQptZM otors_Car_Truck_Parts_Accessories?hash=item1103477 37634&_trksid=p3286.c0.m14&_trkparms=72%3A1215%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318 (http://cgi.ebay.ca/Top-Mount-Kit-Nissan-240SX-T3-SR20DET-Turbo-Manifold_W0QQitemZ110347737634QQcmdZViewItemQQptZM otors_Car_Truck_Parts_Accessories?hash=item1103477 37634&_trksid=p3286.c0.m14&_trkparms=72%3A1215%7C66%3A2%7C65%3A12%7C39%3A1%7C 240%3A1318)

For the turbo. If you look this link Garrett GT3071R Dual Ball Bearing Turbo Customizable (http://www.frsport.com/Garrett-GT3071R-Dual-Ball-Bearing-Turbo-Customizable_p_7839.html) Can you tell me what option take for fit this manifold and fast spool.

I Think is that....but can you comfirm

-Turbine Housing A/R =====0.63
-Turbine Housing ======== T3 inlet GT 3.0'' 4 Bolts discharge
-Compressor Inlet Diameter = 4.0'' Inlet

[kalypso123]

you have to look at the flanges and bolt patterns
your manifold and dump fits this one.

http://i724.photobucket.com/albums/ww248/wegotebay/DP1918AK_OL1924PE_HA1419SRTH-A.jpg

http://www.frsport.com/images/detailed_images/Garrett_GT3071R_02.jpg

all the standard options are the ones you want

turbine a/r .63

t3 inlet 4 bolt

4" comp inlet

and you're good bro. if your feeling baller get the compressor polish :)

you'll need an external waste gate... get an hks - or a tial - or a greddy, and call it a day.

[david200095367]

im running a bottom mount gt3071r .86. no grinding or any fitment issues. Im also running internal wastegate. just make sure to port out the flapper area.

[Zerolift Autolab]

Turbos, Manifolds, etc... you get what you pay for.

I have used the Peak Boost products many times and have always been happy with the results.

As for that ebay link, just because it looks similar... doesnt mean it is.
You have a PM
Thanks,
Robert

[Dj Ryderz]

I know this .... peak boost quality look alot better but for now I have a restricted budget. So Ill try ebay for now and maybe later, upgrade for a better one.

Thx

[ArmadaJspec]

I search but I don't find a clear answer. Is a GT3071r .64 will fit on a bottom mount manifold.

I was thinking about this one : Garrett GT3071R Dual Ball Bearing Turbo Internal Wastegated (http://www.frsport.com/Garrett-GT3071R-Dual-Ball-Bearing-Turbo-Internal-Wastegated_p_13892.html)

And going with the Tomei Exprem manifold.

So any experience ????

I had both GT2876r and GT3071r t2 flange. GT3071r all the way. Used for my SR20DET redtop build, was supported with- 850cc/Power FC Djetro/ Tomei internals/Intake Plenum , etc.

http://i283.photobucket.com/albums/kk287/armadajspec/GT3071RT2flange.jpg
http://i283.photobucket.com/albums/kk287/armadajspec/l_d70d04196f184124a2deba5dd7bcbaa2.jpg

[Master Chief]

I just sold my complete GT3071R-WG low mount setup.
Although i didnt have a TOMEI low mount manifold, i know they place the turbo in the stock location, and this means that NO GRINDING is needed.
The turbo fits right in.

I had the 0.86 ar, and if you'r looking for over 400's, i do not recomand going with any smaller A/R.

I got 457hp and 380lbf at 20 PSI (with Tomei 260's etc....), from this turbo.
Do a search on my user name, you will find plenty of treads on my project and setup.

The only problem with this setup, is going over 20PSI on the internal WG - i only managed that when i got a FORGE Actuator - as any other actuator would open up because of very high ack pressure, due to the small turbine wheel.

I would say that 457, was the max possible on that setup - but it is worth it.

GT35 top mount, on its way - hoping i'll hit 500+.

Good luck.

[landins13]

the key to a good manifold is the welds , anything cast is awesome. the issue with most ebay manifolds is the welds are shit so when you are going for big power they will crack under the heat and strain.

[steve shadows]

I search but I don't find a clear answer. Is a GT3071r .64 will fit on a bottom mount manifold.

I was thinking about this one : Garrett GT3071R Dual Ball Bearing Turbo Internal Wastegated (http://www.frsport.com/Garrett-GT3071R-Dual-Ball-Bearing-Turbo-Internal-Wastegated_p_13892.html)

And going with the Tomei Exprem manifold.

So any experience ????



Believe it or not the TOP mount or at lest the TRUE T3 Flanged .63 Turbine will spool a little better than the T28 based GT3071R bolt up turbo.

It's been my experience so far.

The GT3076R T28 Flanged turbo however spools up the same as the GT3071R T28 Flanged turbos I have tuned...just an fyi, might help even though its not totally related to your ???S

[Master Chief]

You realize guys, that the FLANGE size has no impact on spool time ?
Its all about turbine wheel size, and A/R (as fas as the turbo side of things is oncerned).

[slider2828]

I don't think spool time is in question, but power that is achieved between T2 and T3 flanges is going to be different.

[steve shadows]

You realize guys, that the FLANGE size has no impact on spool time ?
Its all about turbine wheel size, and A/R (as fas as the turbo side of things is oncerned).

The housing size and shape of the turbine housing as well as the manifold collector have a HUGE effect on spool...these are all different from T28 to T3 housing to housing.

[Def]

You realize guys, that the FLANGE size has no impact on spool time ?
Its all about turbine wheel size, and A/R (as fas as the turbo side of things is oncerned).

The AREA in that area/radius value is probably the most important thing when talking about overall geometry of a turbo. A T3 flange just has better geometry for the power levels in question, hence the faster spool and higher power capacity like steve shadows is saying.

[juggernaut1]

I search but I don't find a clear answer. Is a GT3071r .64 will fit on a bottom mount manifold.

I was thinking about this one : Garrett GT3071R Dual Ball Bearing Turbo Internal Wastegated (http://www.frsport.com/Garrett-GT3071R-Dual-Ball-Bearing-Turbo-Internal-Wastegated_p_13892.html)

And going with the Tomei Exprem manifold.

So any experience ????

Not personally, but here's one with unopend motor and stock cams and made 277 rwks (371 rwhp) on a DD and ran 12.06 quarter at 118 mph - check out this Aussie thread link.

Hardtuned.net -> POWERTUNE AUSTRALIA - Hardtuned.net (http://hardtuned.net/forums/index.php?showtopic=382765)

[Teambadrun]

24psi.....

[juggernaut1]

24psi.....

Stock cams

[S14DB]

You realize guys, that the FLANGE size has no impact on spool time ?
Its all about turbine wheel size, and A/R (as fas as the turbo side of things is oncerned).

The Turbine size is different on the WG model vs the standard.

GT3071R-WG Dual BB, 64AR, 84 Trim Turbine: atpturbo.com (http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-025&Category_Code=GRT)
Turbine
-Wheel: 56.5mm w/ 84 trim

Garrett GT3071R Turbo: atpturbo.com (http://www.atpturbo.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GRT-TBO-020&Category_Code=GRT)
Turbine
-Wheel: 60mm w/ 84 trim

They have to bore the T2 housing out to the limit and it still can't fit the stock wheel. This results in choked flow. The 2871R is a better choice for the T2 housing for this reason.

[Teambadrun]

Stock cams
I know
:goyou:

[Master Chief]

S14DB - You are confusing between a "T28 housing style" - wich means that it has an internal WG, and a 5 bolt stlye exhaust side, AND - a housing with a T25 FLAGE size.

The bolt on version of the GT3071-WG, has the turbine wheel down cut to 56.5, because its the only way it will fit withing the T28 exhaust style housing limits.
This has nothing to do with the FLANGE size, beeing T25.

In any case the GT3071R-WG flows more than the GT2871 - this is a fact, but flows less then a "real" GT3071, wich has the 60mm turbine wheel - this is obvious.

For example - Most of HKS's turbos (all exept the PRO versions), have a T25 Flange size. There GT30 series, and GT32 for example, have the standart 60mm turbine wheel.
That is because HKS, dont use a T28 5 bolt style housing, so they dont have any room problems.


Back on the T25 Versus T3 flange, and A/R, what i talked about before.
The Flange size doesnt mean anything and has no inpact on anything.
Flange size is dictated by the turbine wheel size and A/R, and not the other way around.

The flange size (id), needs to be the same or bigger, as the turbine housing passage ,largest ID. (That is the entrance point to the turbine housing).
The turbine housing passage id, is determined by the turbine wheel size and A/R.

If you take out a calculator, you can easily see that All GT35 and smaller turbos (68mm and smaller turbine wheels) , using the standard garrett A/R's available, will fit an T25 flange with upsolutley, no problem.

In fact, if you look at these turbos you can see that no matter if its a T25 flange or T3, the actual entrance to the turbo (right after the flange), imidiatly gets a lot smaller then the actual I.D of the flange.

Saying that a T25 flange is more restrictive than a T3 flange, for example, is simply missleading , if the whole information reguarding the turbine wheel size and A/R in question, is given.

Just to give another example.

A real GT3076 (with the 60mm turbine wheel), 0.82 A/R with a T25 flange, will have the exact same flow as a real GT3076 (with the 60mm turbine wheel), 0.82 A/R with a T3 flange.
These two turbos, having the same turbine wheel size and A/R - will have the exact same passage i.d. within the turbo housing - hence the flange beeing difrent will not matter.

I hope i was clearer this time.