Civic EG

are the y8 pistons a good chioce to use for a N/A build up. i was told that they would raise my compression if i installed them. is this true?

y8's have a higher compression ratio than z6's, but I thought it was because of the smaller combustion chambers on the head, not the pistons. Y8's use a thinner head gasket too which will help raise the compression.

The pistons will raise the compression some. But not really enought to warrent them for a NA build up. If you want a nice NA build up for a D you need to go get a set of P29 US D16a1 pistons. Or if you dont want that high of a CR go grab some PMS-A00 01-03 civic GX pistons. 4cc dome compared to the P29s with a 7.2cc dome.


The head gaskets are the same. When I orderd a gasket from honda the z6 and y8 had the same. but...you might as well get the y8 being that it is a new part number and more than likely they will have it.

alright thanks. and i can just put these in right? i wont have to do anything else internally to my motor to get the pistons to fit?

yes, all D series motors are a 75mm bore.

A6 pistons out of ZC integra for high compression

ok and any idea on how much the y8/a1/a6 pistons would cost?

MI_excoupe wrote:ok and any idea on how much the y8/a1/a6 pistons would cost?

not that much they are pretty decently priced on ebay

thats for like a complete gasket bearing etc kit about 350 shipped
http://cgi.ebay.com/ebaymotors/ZC-P29-P ... enameZWDVW

and pistons by them selves for P29
is about a 140 shipped
http://cgi.ebay.com/ebaymotors/JDM-ZC-P ... enameZWDVW

thanks a ton for the help dc4rob. i really appreciate it.

no problem man