Car is a 94 GSR with well over 100,000 on the clock. Motors getting kinda tired and smokes pretty good upon hitting vtec. That real nice blue color Anyways I ve decided to go to the dark side and build a basic turbo GSR setup. Now my question is this. I just picked up a set of Wiseco Pistons 81.5mm 8.8:1 comp from a fellow H-T member. I know I need some rods prolly just some eagle H-Beams. What else should I do while its all apart? Someone give me the run down.

Obviously bored to 81.5mm
Micropolish the crank?
ARP head studs?
New oil pump
All new bearings
All new gaskets
As far as the head goes Im not that knowledgable
So please let me know.

 

Get the bottom end balanced...Head doesnt really have to be done, but some valve train would help make your setup more reliable....Arp headstuds or any aftermarket brank will be fine...

Obviously you have to pick a turbo setup to support your goals as well

 

As far as the head in concerned; I would keep it stock and maybe add some ITR cams.
My buddy and I had the same exact setup about a year ago and he made around 370whp on his stock gsr.

setup:
inline pro stainless manifold
sc61
RC 750cc injectors
ebay intercooler
2.5" aluminum ic piping
victor x intake manifold
tial 38mm wastegate
tial bov

 

I forgot to add that it has a skunk2 intake mani and throttle body. Should i just freshen the head up? I got a wierd t4 manifold I plan on using so I need 2 find a t4 turbo with an A/R to match my goals

 

like tegman23 said, get the bottomend balanced. as for the head, freshing it up and get new valve seals, aftermarket valvetrain and itr cams. also get rid of that t4 manifold and find a nice castiron, log or ramhorn manifold. a t3t4 57 trim with a 60/63 a/r is good for your goal.

 

I would suggest getting an oil catch can.

 

Never hurts to get the crank checked and polished. Big power can be made on the stock head, but it never hurts to upgrade.... if you do I would send it out to have it checked over, have the guides checked and replaced if necessary, new valve seals, check the straightness of the deck and cut if necessary, and if you still have money to spend you could always throw a decent set of aftermarket springs/retainers in there.

 

A simple piston/rod combo and a 57 trim on pump gas will get you to your goals easily. Hell, a stock block with E85 and a slightly larger turbo will get you there too. Check out HybridLS-T's thread in FI...he's making 415whp currently on his stock block

 

INLET
4"

INTAKE
2.5"

BEARING TYPE
WET FLOAT BEARINGS

OIL INLET
1/8 NPT

MAX PSI CAPACITY
35 PSI

COMPRESSOR
.70 AR

TURBINE
.68 AR

COMPRESSOR WHEEL
57.89 /72.95

TURBINE WHEEL
54.47 /83.16

FLANGE TYPE
T4 FLANGE

DOWN PIPE FLANGE TYPE
3??? V BAND

COOLING TYPE
oil cool only

You dont think this would spool up good?

 

u got it man far as the head goes slap a skunk 2 valve train on there and you good. That should be a easy goal with a 50trim or up

 

up

 

anyone else

 

Thats a 60-1 turbo, it will reach maximum pressure later in the powerband than that 57 trim would.

 

That manifold is wild, what size wastegate is it flanged for? You should find a Turbo that has the same divided collector, it will help your spool out some with the T4 setup.

 

that wastegate setup on that manifold scares me... thats alot of piping for air to get to the wastegate. Looks like it would be prone boost creep issues.

 

so whats everyones consensus on that turbo manifold I have? I got it last yr out at SEMA as a sample product. So I figured why not use it. What A/R on a T4 should I be looking for?

 

If its a SEMA sample, you'd better make sure that it will fit before even getting the turbo. Samples are really that. Many times they are made strictly for SEMA and may not represent the actual product's fitment. I've brought many products that were for the show, and were actually not usable on an application because of smaller issues.

 

ya your right Im def gonna mount the manifold and take some measurements for clearances

 

350whp can be easily and reliably reached on a bone stock gsr with proper tuning and fuel system upgrades

 

For a street car I would definately run something under 1.00 AR Divided, anything higher will be lazier than a T4 setup already is for 375hp.

 

ok thanks everyone. and 96 GSR-T your lights are shipping out on monday.

 

Awesome man thanks Cant wait to apply that JDM treatment to my car

 

Also get a set of ngk-4554's... seems like you are on the right track....

see if you can find some ITR cams....