| Re: Update on setup |
Subject: Re: Update on setup by dan0617 on 2012/3/5 21:12:00 This block is a pre 1980, 4 bolt splayed, billet main caps. Was just built abotu 3 years ago. 4340 Eagle crank, Eagle H beam rods, SRP forged pistons, ductile iron plasma moly top rings. I had a flat tappet cam already and the budget was tight, so I used it. Shouldn't have, especially with the spring pressures I'm running now. Now that I'm rebuilding again I'm going with a retro roller. Both the old cam and the new one are hydraulics. I'm pretty sure the nitrous backfire a couple seasons ago is what caused the original broken piston and ring damage on a couple cylinders. I noticed a little more blowby after the backfire but not too bad, so I didn't tear it down. I really think that was the only time I would have had excessive cylinder pressures. Although, running the 225 shot on high compression they would have been on the high side I guess. Cylinder walls still look great, VERY slight markings at the bottom from the piston skirts, that's it. I honed it good, and 75% of them disappeared. |
