59cc head and scr/dcr info?
04-06-2008, 02:01 PM
#1
59cc head and scr/dcr info? i'd really like to use some 59cc heads with a stockish custom cam. i want to bump the compression as much as possible (by using .031 gasket also) as i'm not concerned with ptv using such a small cam. i'm estimating 11.25:1 or so with use of those heads and that gasket. i've been reading where the dcr or whatever would be too high for pump gas? i'm thinking 208/218 on a 116 lsa with .580 lift. what's the problem with high(er) compression engines and tame cams? stock-like idle is a MUST and this being a 99 shortblock i'd rather not spin over 6,500 rpm. use of a ported fast 92 setup is anticipated.
04-06-2008, 02:49 PM
#2
Have you checked that Compression ratio on a compression calculator?
It seems very low...for example I am using 62cc chambers with a .045 gasket and will have an 11.18:1 Static compression ratio and an 8.59 Dynamic compression ratio which is great for the 91 octane pump gas in California.
If I were you I would ask PatrickG to spec a cam. The charge is $25 and you will need all flow numbers,valve sizes,spring info, bore and stroke(if not stock) but you get a custom cam tailored to your needs. He even gave me the reccomended gasket thickness,pushrod length, and what the CRs will be. You really cant beat it.
It seems very low...for example I am using 62cc chambers with a .045 gasket and will have an 11.18:1 Static compression ratio and an 8.59 Dynamic compression ratio which is great for the 91 octane pump gas in California.
If I were you I would ask PatrickG to spec a cam. The charge is $25 and you will need all flow numbers,valve sizes,spring info, bore and stroke(if not stock) but you get a custom cam tailored to your needs. He even gave me the reccomended gasket thickness,pushrod length, and what the CRs will be. You really cant beat it.
