im building a d16y8 bottom end im gonna be doing a .020 bore on the block and a .010 under turn on the crank can anyone give some advice on what kind of pistons to use to get a good c/r and how much h/p would i be expecting to gain off doing this is it really worth doing the bore or should i just turn the crank and leave the block as it is?

 

all motor or turbo?

 

its gonna be all motor but will be running off the bottle about 4 months after the rebuild

 

someone also told me by using the p29 pistons off the 88-89 d16a1 acura i would get a 12:1 c/r is that true?

 

alright guys i have 3 days to figure out whether or not im gonna bore block or just hone it and run with the p29 pistons i do plan on doing forced induction later on but for now i just wanna build this block so should i bore w/ oversized pistons ...... or hone with standards? gimme some helpful advice thankxxxxxx

 

well i just had my d16y8 block bored .60 over with custom Je pistons and there 9:5:1 comp. .....as long as its the d16y8 head your comp will jump a lil but nothing to worry about but i deffentaly suggest forged then you can spray the hell out of it. and if your boring ur block i wouldnt spary right away i would wait about a month or so after you build, you need to let your new pistons seat or you will fuck shit up :::boom:::

 

ya i know i wasnt gonna use the bottle for bout 2 months or so after the rebuild..... u said u had your bored .060 over???????? you never have any problems with it running hot? and ya its a complete d16y8 motor. whats some good pistons to use for a .020 over bore

 

yeah mines .60 over its crazy i know and the coolint prob = my monster radiator and oil cooler.....but anyway JE makes a .20 over their about 500 with the rings forged accepts turbo and nitrous

 

the place thats machining my block .20 over im getting my pistons thru they are pop-up pistons rated at 12.5:1 compression they are 300 for all pistons with rings and installing them on the piston rods also so i figure thats a pretty good deal

 

cspeedracing.com has a compression calculator to play with and now has d-series added to it. Its fun to play with. I was and still am kinda looking into this same as you.