b18/b20 head compression
#2
Re:b18/b20 head compression
I wouldnt worry that much man. Different methods of testing yeilds diff. #'s ya know. They are all about the same, thats what counts.
No direct exp. w/ them, but Im almost 100% sure B20/B18 heads are the same.
No direct exp. w/ them, but Im almost 100% sure B20/B18 heads are the same.
#4
Re:b18/b20 head compression
hmm, so the intake ports are different? But the valves seem to be the same size? Maybe they are just shaped diff. to accomodate diff. intake mani's
Never compared one firsthand so dont listen to me. :P
Never compared one firsthand so dont listen to me. :P
#6
Re:b18/b20 head compression
your numbers are kinda low, but since they are very close to eachother, you need not worry. if theres a 15-20% (28psi max) differential between the highest and lowest numbers then you have a problem.
id redo the test and make sure you do it properly. if it comes out the same and you want to know where youre leaking then can do a leakdown test with a compressor and a 20$ gauge/adapter.
id redo the test and make sure you do it properly. if it comes out the same and you want to know where youre leaking then can do a leakdown test with a compressor and a 20$ gauge/adapter.
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