Thread: advice on build

Buy some Cp 86mm pistons, they can be found. Then source some GTIR rods and use Nissan GTIR bearings. This combo will hold 500whp easy, and you can put it togeather for around $700-750.

aftermarket pistons with GTIR Rods and bearings. Serious clutch. 8.5:1 compression.

8.5:1, GT30R, 1000cc injectors, pistons, rods, GTiR bearings, C1 cams, springs, metal headgasket, water injection, biggest freakin clutch you can find, B15 transmission, prothane mounts.

Je 8.5 to 1 pistions, crower puater or carrillo rods, GT30 with a .86 a/r, C2 cams, S&rs, O2 intake manifold, e/l exhaust manifold, P&P head, p11 tranny, Extreme PP with a 6 puck unsprung, and cam gears.

That should give you the numbers you want easy. You could also do a VE head and forget about the PP on the head and cams also, just put S&Rs and rev her out.

If you want a very low amount of lag go twin scroll 35r and you should max out around 550.

First go ride in Coach's car before you build a motor for stupid power because there is a huge difference between a t25 or t28 car to a 500hp 30r car.

good luck

Matt

actually, in reality, if money was no object you could easily build a 1000whp sr20det.

i think a fully built sr20det with a gt2871r making 400hp could beat a 500hp gt30r sr20det making 500hp if not done right. so really naming all these big turbos really dont have anything to do with how fast a motor is if its not setup to flow the kinda cfm the gt30 can flow

Sounds like some nice set ups i like the VE head idea, didn't know that was possible, any crazy modifications to make that work? Also the gt3076r flows up to 525 hp correct, but that would be absolutely maxed out, am i right?

I will respectfully & slightly disagree.
9.0:1 is the perfect compression ratio.


Compression does NOT affect spool time. There was a long discussion on this topic ages ago and most gear heads agree with this. To some up the key points of the discussions in a couple of sentences:

"Mass flow is the most important determining factor in turbine performance. the turbine needs a mass flow so that it can extract the required work to do it's job. Increasing compression ratio does not increase mass flow through the turbine." ~ Enthalpy


To the OP, if you want an easy 500 whp, reliably...
GTiR Rods or Eagle Rods will do the job.
Wiseco Pistons RWD SR20DET Blacktop pistons (It will give you a comp. of 8.8:1)
If you want BB, go with a GT30R or GT35R, or Precision SC61 will work.

The precision turbo's are a lot cheaper as well aren't they? also, there are coatings for the pistons etc. how much do they help and what are they? I've read a few posts about them but they aren't detailed.

What coatings are worth a damn, any of them?



Anyone know more about the VE head?

im sorry i got mixed up, i wasnt trying to say that the turbo spool faster from the compression, but less psi is needed with higher compression to reach xxx goal