How will this work, and is it worth the work, or is it better to buy JE-pistons?? I am doing only N/A, and the next investment will be Crower stage 2 cams.. Or a nother brand if you guys have any suggestions...

M. Nielsen, Denmark

 

This is from Spade's SOHC upgrade thread.

The 1988-1989 D16A1 Engine came with some really high dome pistons. They cost around 30 dollars each from the Acura dealer as well, and will increase your compression ratio as follows:
d16a1 pistons (stock bore) in the following with a y8/z6 metal headgasket(no mill):

d16a6= 11.08: 1 compression
d16z6= 12.03: 1 compression
d16y8= 12.61: 1 compression

If you are going all motor and wanna keep it cheap (by wanting to use B16 pistons, it sounds like you do) this is defiantely the way to go.




[Modified by VTEC-DA, 5:12 AM 1/27/2003]

 

Well the D16 has a bore of 75mm, where as the b16 has a bore of 81mm......
---so they only way you could do that is with a custom sleeved block(but even with a sleeved block i don't think it would be a good idea.

CAMS: try exospeed.


[Modified by Charlie Moua, 6:30 AM 1/27/2003]

 

well now I am confused.. what about the text Spade wrote.. It says that it's possible to use the B16A1 pistons.... but "CM" says they wont fit????
who's right???

M. Nielsen, Denmark


[Modified by SOHC_DK., 1:37 PM 1/27/2003]

 

spade talked about D16A1 (dohc zc motor) pistons are P29 or in euro PM7 found in 88-91 civic ZC dohc.

 

is this a stock head (or a A6 block with Z6 head)? an A6 with A1 pistons will have a 11.08:1 compression?