ok... so yesterday someone told me i could get around 11.5:1cr in my y8 with jdm zc pistons. i was given this link: http://www.zealautowerks.com/dseries.html. i put in all my specs, and the zc pistons would yield about 12.69:1cr! i would have to use a head gasket about twice the thickness (0.070in) as my stock gasket (0.037in) to get close to 11.5:1cr. is that safe? will it put too much tension on my timing belt? also, i need someone to tell me whether or not these pistons will hit the valves. is there anything wrong with this setup? i plan on using my stock y8 crank and zc rods. (if it matters, i'm going with 0.020in overbore pistons as my cylinder walls may be scored)

 

c'mon... i really need some advice here. i've been trying to get some answers for the past few days.

 

zc pistons are too much comp for y8. Not a street proposition. End of story

 

how do you suggest i get that kind of compression? i can't find aftermarket pistons above 10.5:1cr. should i go with those and mil the head?

 

Well backtop D16A1 (88-89 Integra) should be ROUGHLY .4 lower compression, all factors the same, than a blacktop ZC piston. A browntop D16A1 (86-87 Integra) should be 1.0 point of compression lower than a blacktop ZC piston, again all factors being the same. But I know there are a lot of other choices out there, for new cast piston money you'd probably be close to some cheaper forged pistons out there.

 

i say try it...if you blow something up, its a d series and you can replace it for super cheap

 

u used the d16a1 (88-89) integra pistons they r exactly the same as a zc pretty much. i used those on my y8 and the motor popped because the compression was so high id do it again but im recommending u run a thick head gasket and it will be fine . and just so u know it was worth it that car hauled ***

 

SRP makes some 11.1 pistons. You will pay more, but they are well worth the price IMO.

You can get a 3 layer head gasket and get 12.1 out of A1 pistons in a y8. Maybe a mild port job and nice crower stage 2 cam. That would be a nice little fun daily driver NA dseries.