M20 engine build
Ok, so i want to build my engine so that it can handle more boost. Im running 12 right now with arp headstuds and a better head gasket but im talking pistons, rods cam, which head, high or low compression(idk what it better for boost), etc… thanks
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Which m20 do u have?
Stroker, eta bottom and 325i head
Probably the best way is to start off with an eta bottom with a i head. Your probably go with staying at like a 9:00 compression ratio. Those m20 are strong. Some guys are running 500 hp, if they are tuned well. I would go Bearings, rods, pistons. Probably get cams off Ireland engineering. The next step would be to upgrade the ignition system to like MSD. But you should have a bullet proof setup already. What turbo are you using?
I suggest doing a lot of research before attempting this build. I only say that its fairly common knowledge that low compression is typically better for forced induction. I know why all have to start somewhere with our car knowledge, but don’t attempt something thats to far out of your skill set.
Now its onto how much boost you want to run, the M20 is pretty stout and can handle boost. However its all in the tune. The better the tune the more boost you can run. Thats where a lot of turbo build fail because dyno time is expensive.
I’ve been looking all over revlimited but its so vast that i havent been able to find a solid build thread or anything to follow. Do you know of any threads you could link me
The mr.e30, i already have the eta block and i heads. The main question is specifically what ratio cams, length of rods, and pistons should i get to keep a low compression ratio. I know you want a low compression if you run a turbo because the turbo essentially adds compression. I am running a holset turbo.
Depends on how much power you want to make. Apart from forged pistons and stronger rods you can use the diesel crankshaft. It has the same dimensions as the eta crank but it’s forged and therefore way stronger.