ToDa30/4 Posted July 18, 2006 Report Posted July 18, 2006 ok what over size valves have u guys fitted & any mods to the valves to fit them & how much should i get the head shaved to give 9.8 to 1 please Quote
ToDa30/4 Posted July 19, 2006 Author Report Posted July 19, 2006 ok what over size valves have u guys fitted & any mods to the valves to fit them & how much should i get the head shaved to give 9.8 to 1 please aw come on someone must kno :jamie: Quote
Felix Posted July 19, 2006 Report Posted July 19, 2006 no idea with oversized valves. nothing is a direct fit. not worth the effort for a street engine in my opinion. not on a 4k anyway. just get a 3 angle seat job. measure your combustion chambers to work out what CR you have now (taking head gasket thickness into account). from there you should be able to work out how much you need removed. Quote
Blue_rolla Posted July 19, 2006 Report Posted July 19, 2006 have u thought about just puttin a 3k head on it..it'll up compression Quote
ToDa30/4 Posted July 19, 2006 Author Report Posted July 19, 2006 i have a 3K-H head i could swap, whats the comp ratio with the 3K/4K combo please Quote
Blue_rolla Posted July 19, 2006 Report Posted July 19, 2006 dunno myself but it wuld be close to what u want Quote
dingostolemebaby Posted July 25, 2006 Report Posted July 25, 2006 i thought 3k heads were weak? personally i reccomend getting a belt sander and goin over the head for a while, n try that! haha jk, what motor is it? i think 1/4 a mm mite do the trick, i have no idea tho, just thinking of what ive seen of different thickness head gaskets used on rb engines Quote
ToDa30/4 Posted July 26, 2006 Author Report Posted July 26, 2006 i thought 3k heads were weak? personally i reccomend getting a belt sander and goin over the head for a while, n try that! haha jk, what motor is it? i think 1/4 a mm mite do the trick, i have no idea tho, just thinking of what ive seen of different thickness head gaskets used on rb engines :lolcry: & do the valve job with a angle grinder . its a 4k motor & i will fit the 3k head (later types are ok ), i want to keep the 4k-c head incase the superecharger thing happens as its 8'5 to 1 Quote
Hurricane Posted July 26, 2006 Report Posted July 26, 2006 there was a head on ebay that had 2lt cortina valves in it i think? might be worth a look. Quote
jamesrolla Posted July 27, 2006 Report Posted July 27, 2006 it was a $500 head and it had SOHC gemini walves, it was full house but it would have made a little K motor scream cheers james Quote
ToDa30/4 Posted July 27, 2006 Author Report Posted July 27, 2006 ive found a worked 4k head to fit & still keep my original one for s/c later.thanks for the input :lolcry: Quote
Hurricane Posted July 27, 2006 Report Posted July 27, 2006 it was a $500 head and it had SOHC gemini walves, it was full house but it would have made a little K motor scream cheers james yeah thas the one, iwas thinkin of gettin it but lack of cash put a stop to that :lolcry: Quote
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