GT35R setup on an NA 13b
 

Ok so... im buying a Garrett GT35R from a good friend of mine for $300 and im really set on getting this on and i want 850cc and 1600cc injectors:

Now for this to happen will Dual 255lph fuel pumps be enough and will i be able to run 15 lbs of boost also a 410 rear end basically what im asking is... it possible to make this thing work on a $5000 budget and if i could get some suggestions from some people

You can do it with a walboro 255 and a FPR with some larger injectors. No need for that huge fuel setup.

The 35r is realy a small turbine for a rotary but will be alot nicer then stock turbo.

So can a rebuilt NA 13b handle 15 lbs of boost?

Really? A customer's FD I painted dyno'd 407whp on a 35R and the graph was still linear at the top.....

A $5000 budget *might* be enough if you can do everything yourself. But your going to need sooo many periperhals to run that on an N/A car that 5K can disappear pretty quickly.....search for N/A to TII swap or Turbo swap. Once you get an idea of whats involved, add on a front mount, a standalone, fueling (assuming you go to a parallel setup) downpipe, wastegate, rad...it doesn't take long to burn up that cash.

Ummm, with professional tuning.........perhaps it could take 15lbs from the 35R. But an FYI, I've seen close to 400 wheel at that boost level. So an entire turbo driveline is a must.

Yea ive got all that in mind... I was told that an NA motor was better to build on than a turbo motor something about the Intake manifold and compression being better... but this was coming from a guy that tried telling me that he had a rotary motor in his Pontoon boat!!

N/A rotors have higher compression than turbo. If I remember correctly, the n/a has 9.5 compression while the turbo has 8 or something. Don't hold me to those numbers.

rotarys were used for boat motors for a little while. Look it up.

86-88 S4 NA - 9.4:1 compression

86-88 S4 T2 - 8.5:1 compression

89-91 S5 NA - 9.7:1 compression

89-91 S5 T2 - 9.0:1 compression


You can run your car with the n/a drivetrain but it will easily break if driven on hard. (so that would mean no launching , burnouts, drifting etc). It would basically take alot of fun out of having all that hp, so best bet would to get the full t2 drivetrain.

Which set up is better the 4:10 or the T2 rear end... I have a rebuilt tranny that has been chryo'd

You could buy a parts car that would have probably a blown TII engine for about a grand, that will get you your drivetrain and if you're 4 lug, a 5 lug swap. You'll then need to invest in clutch and tires, a new ecu and a fuel system.

If you start to run out of money you can go on ebay and find cheap manifold WG BOV etc IC etc.

It would also be a good idea to remove the 6 pi sleeves and port the TII LIM to fit to make it about 10 times easier to fit the turbo, if you buy a parts car this should be easy.

Then if all of your NA stuff is in good shape you can sell it along with parts off the parts car that you dont need and have it hauled off and get a little bit more cash for that.

If you dont have a good high flowing exhaust definately invest in that as well.

But with $5k its no doubt its possible if you do the work yourself and sell off your spare parts, you can probably keep a chunk of that money.

T2 Rearend is better , it has stronger axles but youll need a custom driveshaft to hook it up to an n/a transmission.

Or he could use the entire turbo drivetrain?

but ive just spent the money on this tranny so i wouldnt want to get rid of it now....

NA tranny wont hold up at all. and 4:10 vs Tii rearend? the Tii rearend is 4:10 or maybe 4:11, i cant remember.

I'm 90% sure the only NON 4.10 rear ends are automatics and GTUs.

GTUs: 4.30
Auto: 3.90
Everything else: 4.10

Your GT35R turbo wont fit on the car.. sell it to me for 350 shipped. :D Haha.. JK..

NA and TII diffs have the same final drive

s4 NA's are 9.4:1 compression
s5 NA's are 9.7:1 compression

s4 TII's are 8.5:1 compression
s5 TII's and FD's are 9.0:1 compression.

edit: woops that guy already posted that on the first page :)

Haha nice try... ill get right on that

i'm not sure if you're aware, but you can pick from many different size turbine housings when you buy a turbo. i think the gt35r "standard" turbine housing is the smallest one available, but you can get all the way up to like a 1.06 a/r...

assuming his gt35r came with the standard .63 housing, its still not going to be horribly small (also with the nice turbine wheel) on a stock 6port NA block with stock exhaust ports. the only problem is finding a manifold for a rotary with a T3 flange.

5k? I don't think that's enough. What are you doing for engine management?

even asking a question like this kinda signals to me that you may be diving in too deep.

but what series engine is it? the series is almost irrelevant because you're pretty much be pushing the limits of regular gasoline at 15psi with anything higher than 9.0:1 compression.

that tranny -even cryo'd or whatever- probably wont last much longer than any of the rest of the drivetrain. all of the NA stuff starts to lay down around 200wtq

Yes with a 35R you will jut blow up the NA tranny and be at more of a loss.

You should sell the tranny it would make more sense. You could get a decent amount of money from someone that needs it.

havent decided yet... someone suggested haltech or Microtech but i havent made up my mind yet

turbos have 4 10's

Wow.. yeah.. good job there ENZO.....

wow i have lag
whats up with granny's speed shop saying stock n/a parts have handled there v8 swaps? who heres blown up n/a pieces

Man. that must be SOME lag there ENZO.... 10 hours? I'd say you might need to call your ISP's support. :)

Grannys speed shop is on crack if they're saying an NA trans can handle the torque of a decent V8 or TII over any semblance of a long term installation.

I don't believe they are talking about the N/A transmissions. What I have heard is that the N/A differentials are holding 400+ hp from modded V8's. That may be where the confusion is.

they saaay 10 sec and single digit passes ... im just thinking out loud.. i dont believe it completly my self ( LOL granny's crack shop)

yeah maybe not talking trans
makes more cents

why dont you take the $5K and buy a TII and mod it. That would be much easier than this.