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Old 09-03-2007, 01:15 AM   #1
tedstriker
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Default Built Motor Question

I'm in the process of buying an 04 sti that has wiseco pistons, balanced crank, supertec springs. It was a build that never got finished. My question is, how much power can this engine hold? my plan is to go GT35r with all the supporting mods for drag racing (low 11's, possibe 10's). can I leave the engine alone, or will I have to go back in and look at the rods etc. Thanks.
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Old 09-03-2007, 05:47 AM   #2
Legacy_H6TT
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1st, great username! I love that movie...

2nd, for those sort of times, and that kind of turbo, you would certainly want to look at rebuilding it. Stronger rods, race bearings, new rings & cylinder bore hone (unless its not been run yet since the first build), bigger injectors and uprated clutch are all prerequisites for dragging.

Plus, when building, make sure you do all your measuring; bearing oil clearances for rods and mains, piston to wall clearance, piston ring gaps, compression ratio calculation and valve to piston clearance. All so terribly important!
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Old 09-03-2007, 12:14 PM   #3
S L O W W R X
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Stock Rods "should" be fine....but why risk it, go ahead and spend the little bit of extra cash it takes to get rods.

Matt
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Old 09-03-2007, 03:07 PM   #4
tedstriker
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I'm going to be ordering the UR GT35r kit soon. With the mods I already have, how agressive could I get with boost, timing, etc? I guess what I'm asking is what kind of power/reliability can I expect to get out of this motor as is? I would like to achieve the goals I have already stated, but also be conservative, and have this car last a while. Let me know if you have any feedback or comments.
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Old 09-04-2007, 12:04 AM   #5
tedstriker
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any other info/insights?
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Old 09-04-2007, 02:41 AM   #6
Legacy_H6TT
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If you're confident the motor is solid and hasn't been thrashed since its build, and was put together properly with new bearings, rings, etc, you could add some 550cc injectors and expect a 400hp tune. Thats good for 11 second quarters if your drivetrain can handle it. An Exedy twin plate and low mileage 6 speed will be fine...
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Old 09-04-2007, 10:02 AM   #7
tedstriker
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there are 2000 miles on the engine, and 10000 miles on the car itself. I'm confident in the build, so I think things will hold up. It also has a upgraded 3 puck clutch, so all I need is the big turbo, and supporting mods.

A friend of mine has a JDM V8 engine with a gt35r and pushing 18-20psi all day long? are these motors stronger than what I have here, or is he just waiting to have his motor explode?
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Old 09-04-2007, 04:56 PM   #8
IllNastyImpreza
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Quote:
Originally Posted by tedstriker View Post
...
A friend of mine has a JDM V8 engine with a gt35r and pushing 18-20psi all day long? are these motors stronger than what I have here, or is he just waiting to have his motor explode?
eh...20 psi isn't 35
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Old 09-04-2007, 05:18 PM   #9
tedstriker
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What does that have to do with it?
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Old 09-05-2007, 07:53 AM   #10
Legacy_H6TT
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Yeah, that last post was confusing...

Anyway, JDM v8 are pretty strong, although pushing 20psi all day may want bigger injectors or at least a remap. 1999> ECU's are flashable, check out http://www.ECUtek.com.
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Old 09-05-2007, 12:25 PM   #11
modaddict
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dood, you will be just fine.

like I said at the other site that you created a thread on. ALOT of the reliability lays within yourself. Even more reliability relies on the tuning.
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Old 09-05-2007, 01:57 PM   #12
bboy
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He means you can run 35 psi on the 35R. I run 20 psi on pump fuel and my compression is 9.3.

Lot's of folks in 500+ whp range these days. Take a look at the Element Tuning GT65 kit. It may not bling like the ball bearing ones, but it works very well and boost onset and spool is quicker.
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Old 09-09-2007, 07:55 PM   #13
tedstriker
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Any other comments/suggestions on the strength of this motor?
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Old 09-09-2007, 08:16 PM   #14
charliew
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You've got two choices:
1. run it like it is and hope it was built well and save up for a new motor.
2. build this motor so it will take what you plan on doing to it.
I think it's that simple, no body can talk it in to being something it may not be.

Cowboys are on gotta go. Good luck

Charlie
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Old 09-09-2007, 09:23 PM   #15
IllNastyImpreza
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Quote:
Originally Posted by modaddict View Post
dood, you will be just fine.

like I said at the other site that you created a thread on. ALOT of the reliability lays within yourself. Even more reliability relies on the tuning.
x10 .... just run the thing man
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