ok everyone has been telling me its a "waste of money to get the b18c5."
so what is the difference in the two besides compression ratio. i was planning on puting a turbo on the b18c5 and people tell the b18c1 is a better idea. but tell me this, if i lowered the compression ratio on the b18c5, wouldnt that be better turboed than the b18c1? due to better internals...

btw, this is going in a 92 hatch

 

To lower the compression, you'd have to change the internals out to low-comp pistons, etc., so you'll see no gains with going with a B18C5 since you won't have any use for its forged, high-comp internals.

This is why it's cheaper to just go with a B18C1 for forced induction. Do a search and you'll find a few threads about this along with some more indepth reasoning.

 

ive heard that its better to turbo the b18c1 due to the lower compression, but i also heard a supercharger works great with the b18c5 b/c it gives you response starting at 1000rpm

 

No way dude, the only thing you need to change out is the pistons. The nicer rods, springs, valves, retainers, cams, and crank can all stay. On top of that, the B18C1 head flows likew shit. If it isn't a PR3-X head casting, you shouldn't even bother, especially for boost. In the case of turbo, more than likely you'll want to change the rods and pistons for strength and temp. tollerance any way, you might as well at least start with a platform that is almost complete. On an otherwise stock B18C5 with just rods and pistons, the motor is good well over 350whp. The GSR motor, which has only one valve spring on the exhaust side, is a much less stable platform, not to mention an awkwardly shaped combustion chamber, which doesn't help detonation any. The smooth rounded combustion chamber of a PR3-X head is far superior. And if that weren't enough reasoning, the manifold on the B18C1 blows for boost...

Later,
Aj

 

Aj my man, I wrote that post almost half a year ago, I know better now :P

 

tru tru