BTL_nissan

hey guys got my build together and now im wanting to play around with some of these cheap godspeed turbos... heres my build

ka24det

block:
wiseco 9:1 cr pistons
eagle h beams
clevite bearings
arp head studs

head:
ported exhaust
supertech dual valve springs t retainers

all the required fuel management yada yada

which of these would be best choice for a linear power band around 350 hp, no laggy spool and no on/off switch on boost

heres my options

First:
T3T4 turbo .50ar (quick spool)

Intake: 3 inch
Inlet: 2 inch
Compressor trim: .50
Compressor Wheel diameter: 53.87 / 76.58
Turbine Wheel diameter: 56.41 / 64.93
Exhaust Trim: .50
Turbine flange type : T3 flange
Down pipe flange type: 4 bolt flange
Cooling type: oil cool only
Horsepower rating: 350+

or

Second
T3 SUPER 60 TURBO CHARGER .63ar

Intake: 3 inch
Inlet: 2 inch
Compressor trim: .60 ar
Compressor Wheel diameter: 54.28 /71.32
Turbine Wheel diameter: 55.79 /63.36
Exhaust Trim: .63ar
Turbine flange type: T3 flange
Down pipe flange type: 5 bolt standard
Cooling type: oil cool only
Horsepower rating: 325-350

or

Third
T3/T4 TURBO CHARGER .63ar (polished compressor housing)

Intake: 3 inch
Inlet: 2 inch
Compressor trim: .50
Compressor Wheel diameter: 50.16 / 76.84
Turbine Wheel diameter: 54.06 / 65.20
Exhaust Trim: .63ar
Turbine flange type : T3 flange
Down pipe flange type: 5 bolt standard
Cooling type: oil cool only
Horsepower rating: 350+


keep in mind im able to get these new shipped to my front door around 250 bucks and i know everyone is curious how they hold up.

when it blows ill buy a good turbo with income tax, this is just a fun temporary thing

OrangeVirus1

gt28rs dbb disco potato 350hp all day, no laggy spool

i wouldnt attempt 350hp on a godspeed turbo. it pronly wont last to long

dont waste 250 bucks man you can get a solid garrett turbo for just a little more. dont waste ur time building around a godspeed turbo that you know will fail

BTL_nissan

garrett gt28rs goes for $1k+...... and pretty sure they are limited around 300hp, to me the t25 housing would be too small. then again this is my first ka build. to me a turbo designed for a miata wouldnt suffice

OrangeVirus1

Since when is a GT28rs designed for a miata.
Genuine Garrett GT3071R Turbo | eBay

bid on this, hope you win it

brndck

you should read the melissa millers blog melissadrifts.com
check out her experience with multiple godspeed turbos taking a shit.

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OrangeVirus1

brndck

i should also mention that i have a garrett/turbonetics turbo for sale right now.......

#/f/sale-items/49983...-downpipe.html

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BTL_nissan

admin delete this thread, its going no where

rcdad123

i would go for the third turbo. with 2.4 litters and 9-1 comp. ratio, that would be a good all around choice. and yes, the disco potato or gt2860, is designed by a guy that was working at garret for his Miata.

Frank_Jaeger

lol are you serious?

brndck

Lol antilag beats the FUCK out of a turbo.

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K_style

if you want something nice and big..

#/f/sale-items/49967...ing-turbo.html

K_style

She must enjoy changing those turbos often.

I was bitching about changing bottom mounT turbos on SR. Hell I can't even imagine changing turbos on Z32...

brndck

no shit. yank the engine each time.
i'm friends with her and her bf chris and the story of them yanking the engine in a friends driveway in arizona (they both live here in san diego) to replace garbage turbos is a nightmare.

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4x4le

I dont think godspeed has what your looking for. Here is a godspeed 60-1 on a rb25 I tuned.


Now this is on a dyno dynamics so the hp reading is actually about right where your expecting. The thing was not an on/off switch when above the boost rpm threshold but spooled quick when it was above it but look at where the boost rpm threshold was..... This was also right around 20psi. I was not happy with it but the customer was and that is what he expected to see power wise. It held up as well and supposedly they are rebuildable and are reliable after that. I just would not be happy with that low of a number and that delayed of a spoolup regardless of the cost. I have spend 2x that trying to shave a couple hundred rpms off of a spoolup in the past. Hell, I spend more money than that on boost controllers. A good boost controller can slow down your spoolup if you want it to.

OrangeVirus1

looks like not fully spooled until after 4k RPM? that SUCKS

Gt2871R good to 400+hp and you will be fully spooled like 25psi way before 4k

AdamR

They are making it too hard. They are accessible from under the car.

4x4le

25psi on a ka with a 2871r, nope not a t2 framed one at least.

OrangeVirus1

KA is 2.4L, I have spooled 25+psi on my 2.5L 4cylinder on a Gt2871R by like 3500rpm ( althought it was a boost spike.. it still happened )

4x4le

ok, it wasnt a ka either though. Its not just displacement that matters. Ka's get choked on the exhaust side easy

jamg

exactly...

in other words, they are telling you they abused the fuk out of that turbo. it's probably no good and will needs a new CHRA soon. they even listed the part number for you, lol.

that's the grey area for buying a used turbo- you dont know the history behind it, and the use of it.

i went with a GSP 2871. They have come a long way from where they use to be. They order from JMTurbo, which is essentially a chinese company, but they at least have an office here in the US. It will suffice for my goals. It was either that, or buy a used 2871 for 500, off some random guy, who god knows what he did to it.

About 7 drift/road race events *A few canyon/mountain runs
* Roughly 8,000 miles


seems like to me she got her money's worth. specifically the drift/road events.
pro-am drivers tear apart their motors so often that the threading on them becomes worn out and they end up needing a new motor. same concept.

OrangeVirus1

ball bearing turbo's are tough. you can inspect it, if both wheels do not touch either sides of the housing, it spins freely and the bearings don't sound screwed, you're probably good to go. ball bearing turbo's can take serious abuse IF they have a constant supply of oil.

if you buy it off ebay, and it is Crapped out, and the seller did not SPECIFICALLY specify that, you simply file a "not as described charge" and you will be refunded 100% of the cost. you are not at a total loss if you buy something on ebay and it ends up being a dud.

Frank_Jaeger

That sounds potentially like a lot of needless hassle.

BTL_nissan

ok guys, called and talked to a shop today, they took down my mods list and poof... he recommended a precision 5454e ball bearing shipped to my house for 659. sounds good to me, also said i should be in boost around 2600 rpms and make my goal around 15-17 psi.

im no expert by all means when it comes to reading the compressor flow charts yada yada but heres the specs on the 5454

MFS (Machined From Solid) 54mm Inducer Compressor Wheel
"E" Compressor Cover with 3.0" Inlet & 2.0" Outlet
54mm Exducer Turbine Wheel
T3 .63 A/R Turbine Housing with 4-Bolt Discharge
360� Journal Bearing System.

hows this look? is the ka going to choke up top with this turbo?

jamg

I would have sold you my dual ball bearing IHI VN14 for cheaper than that.

no shaft play, great condition.

rcdad123

i`ve had a few turbocharged 2.4 litter engines and .63 a/r exhaust is what i always prefer. i`ve tried one size smaller and one size bigger and i always go back to the .63 a/r. that size will work really good up to around 6,500 rpms.