quench issues
Thread Starter
Instructor
Joined: Feb 2004
Posts: 241
Likes: 0
From: Ravenna Ohio
Wow lots of replies. I thought i wouldn't get anymore. This is going to be a high compression motor running on a race fuel. The cam will probably have some decent overlap, decisions not made yet. Would i be able to go with maybe a .060 quench and run a smaller 114cc head and still get enough turbeulence to not have any problems with hot spots and detonation.
Melting Slicks
Joined: May 2001
Posts: 2,131
Likes: 4
From: May help you? You can sure as hell try!
Running race gas, smoothed chambers and piston tops and 0.060" quench will be fine. Since you're blueprinting, you could do 0.040" but I wouldn't go tighter. That's the way I'd build it. Sounds like a sweet combo.
P.S If you run a cam with a fair amount of duration like 240' at 0.050" or more, the cam tends to drop the effective compression ratio anyway. You give up some torque at low RPMs, but pick it up at higher RPM's when the cam starts to breathe. Knocking is most prevalent at low RPM's and high load situations, so the big cam works in your favor by avoiding knock with the high CR.
P.S If you run a cam with a fair amount of duration like 240' at 0.050" or more, the cam tends to drop the effective compression ratio anyway. You give up some torque at low RPMs, but pick it up at higher RPM's when the cam starts to breathe. Knocking is most prevalent at low RPM's and high load situations, so the big cam works in your favor by avoiding knock with the high CR.
Last edited by LemansBlue68; Jan 20, 2005 at 08:42 PM.
