| Re: Engine rebuild/upgrade project |
Subject: Re: Engine rebuild/upgrade project by sliding on 2009/11/21 14:19:36 I did some calculating today and I'd like to hear your opinions. I plan to deck the block to 9.000" (mill down .025"). I'll use Felpro gasket with 0.039" comp. thickness. According to my calculations that puts me to: * 10.8:1 SCR * 8.2 - 8.4 DCR (I'll do some work on chambers so I'm not 100% sure in final chamber cc) * 0.039" piston to head clearance I could go higher with CR because lowest octane fuel here is 95 and 100 is available almost anywhere. However, I'm limited with engine components that I've got. Parameters that I've used for calculations are below, so if anybody wants to doublecheck on me, please do. - stroke 3.48" - rod 5.7" - adv. intake closing 70 deg (this is with xr-288hr cam) - bore 4.020" - chamber cc 58-60 - gasket thickness 0.039" - gasket bore 4.080" - piston dish 5cc Any inputs and thoughts are welcome! |
