cc of the heads for swap info

[troubled4g64t]

I have put up afew post's and no one want's to help me by providing ant info.
So I will ask in a more genral manner.
what is the cc or the head of the following.
4g64 sohc
4g63 dohc evo
g4js dohc kia/hyundai

I am working on a new motor and have read conflicting info and need to know so I dont blow my shit up. I know lonestar22 started this swap and that gooset2099 has the evo head but either they don't read or don't want to answer.

[Exhaust power]

on the mitchell web site the sohc was rated at 9.6:1 cr and the hyundAi head was rated at 10.1:1

seeing that i went and looked in the galants fsm and it said the cr was 9.1:1.

and if you did more research you would of saw a thread that linked to club3g.com web site that explained what i said in further more detail.

[troubled4g64t]

Well thats the prob. actually I own the haynes they say the stock c/r is 9.0:1 and I have heard that the hyundai head has a lrger cc in the head but have read many conflicting articles that show completely diff. c/r's when complete since I know that the odds are slim to none (closer to none) that I am going to match a setup exactly I am just looking to find out what the head cc's are I have read that the stock sohc head is 47cc and the sonata is 56cc but can't find the evo cc or proof that the other 2 figures are correct I figured since I have read so much on this swap setup as well as the evo swap that someone must have had there head speced and gotten exact #'s

[duh2150]

evo head is like 43 cc Hyundai head cc is 56 and mitsu sohc is 47 there did you get this info? post it up and ill make sure its right, i already did the headswap if your going evo head your cc will be like 43cc or so making your C/R like 11.0:1 or something of that nature

what exactly are you going for? PM me

[troubled4g64t]

this is all stuff that I have read in various areas both here club3g and so on the only things I do know is the hanyes says 9.0:1 and that I have seen evo c/r from 8.8:1 to 9.0:1 that is the reason for asking

[duh2150]

are you building the bottom end? its 8.5:1 with stock mitsu pistons with kia head and like ~10.5:1 with evo head stock pistons i don't think anyone knows exactly what stick C/R is its either 9.5:1 or 9.0:1 manuals and online and doing the math yourself all come up different im about to post up my build thread.

[troubled4g64t]

well not really I was planning on getting an oem reconditioned block crank rods and pistons they are for sale on ebay for 500 then its 130 for shipping and 200 core but I was planning on changing the pistons to achieve a suitable c/r in order to put a good amount of boost since I know that the oem block and rods can handle a rather good amount of power and that the sohc head was the weak link in the 64 motor I have come to the conlusion that by doing the dohc swap larger valves stronger springs and upgraded cams I should be able to yield a much higher boost level the the stock 18psi max that the head could handle. But of coarse that changes if the c/r is to high. so I'm now figuring I probaly should go w/ pistons that will give me about 8.8:1 c/r so that I will still have decent low end power while the turbo spools since I have a t3/t4 50 trim .53 ar.

[duh2150]

8.5:1 if you order pistons that are oem galant C/R if your changing pistons why are you asking questions lol you got the head cc's its basicly all you need

[Exhaust power]

http://www.club3g.com/forum/3g-eclipse-rs-gs-specific/108380-revised-dohc-swap-information.html we should post all this info on a new tgc thread.