JDM B20b with p8r
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JDM B20b with p8r
Hey-
I have a quick question regarding B20s. I have the JDM B20b high compression motor which should be 9.6-1 compression. I found a good deal on a P8R B20 head so I want to know if putting the p8r head on will change my compression ratio? If so, do you know what it will be? If it drops it at all I may look into getting the head milled at the machine shop to compensate for the loss. Thanks guys
I have a quick question regarding B20s. I have the JDM B20b high compression motor which should be 9.6-1 compression. I found a good deal on a P8R B20 head so I want to know if putting the p8r head on will change my compression ratio? If so, do you know what it will be? If it drops it at all I may look into getting the head milled at the machine shop to compensate for the loss. Thanks guys
#2
Re: JDM B20b with p8r
You could PM Irev210 or look for his B20 thread he made about the differences. I would imagine that if you switch heads that the CR would not change as the only difference I recall is that the Z had PHK pistons while the B did not.
If the head casting code is the same on both heads, I would assume that they are the same and CR would not change, but thats just me.
If the head casting code is the same on both heads, I would assume that they are the same and CR would not change, but thats just me.
#3
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Re: JDM B20b with p8r
You could PM Irev210 or look for his B20 thread he made about the differences. I would imagine that if you switch heads that the CR would not change as the only difference I recall is that the Z had PHK pistons while the B did not.
If the head casting code is the same on both heads, I would assume that they are the same and CR would not change, but thats just me.
If the head casting code is the same on both heads, I would assume that they are the same and CR would not change, but thats just me.
You could deck the P8R head and maybe bring your CR back to like it was.
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Re: JDM B20b with p8r
Awesome info. Thank you. What HG (OEM only) should I run with that setup? P8r, b20b hi comp, or are they the same?
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