Thread: SR20VET + Compression

I am planning creating a nice little 300BHP VE+T with good drivability fuel consumption ect. Here is my plan.

Here is a potential plan.

SRxxVE Head - Port + Polished
SR16VE Cams - (will help to rev the engine)
BC Valve Springs
SR20VE Pistons
Manley H-Beam Rods
555cc Tomei Injectors
Balanced 8CW SR20DE Crank
GT2871R Turbo
HKS 1 Bar Actuator
N1 Throttle Body

Compression should be around 11:1 compression ratio. I will be using Nistune for the map.

What size of exhaust would you recommend? I was thinking 2.5" so i can keep it quiet. Bear in my i will be keeping the Cat on.

Your compression should be 10.3:1 since you are using stock pistons. That being said, don't bother with the rods without doing pistons. 1bar of boost with a ve and 16ve cams will put you way over 300bhp with that turbo. You also didn't say what exhaust manifold you will be using. You should probably go with bigger injectors also. I would go 3" exhaust, with a cat, resonator and a muffler on a turbo car, it won't be that loud.

The Stock SR20VE pistons yield 10.9:1 anyways, so by the time the head and block is skimmed it should be nearer to that.

For your goal you dont need N1 TB, that big turbo, even injectors... stock springs should be fine too.

So you reckon the stock ve TB should be ample enough then?

Wrong

Run aft pistons . Oem ve pistons are week.

Stratton.

I told you what the compression ratio was in my last post. Research a little more as that is just a basic fact and nothing complicated in the least. You are way overthinking a 300bhp ve. That could be done safely on a stock ve with a GTI-R setup and 370's @4bar fuel pressure.

Im sure at that compression, a GT28RS would easily get you 300BHP

Using the 2871 and aiming 300bhp you won't need any wrenching into the engine, get a conservative timing tune and instead of rods add alky injection. 300bhp would be pretty easy on a basic setup