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static vs. dynamic compression #608077 02/08/10 07:00 PM 02/08/10 07:00 PM
Joined: Nov 2003 Posts: 654 ohio D dbran451 OP mopar
dbran451 OP mopar D Joined: Nov 2003 Posts: 654 ohio	I have been playing with the Wallace racing calculators and doing some thinking (very dangerous thing) which would be best to use to figure what fuel to use. With the figures I run I have 14.3/1 static compression but that converts to 11.65/1 dynamic so my question is should I run 110/112/114 Last edited by dbran451; 02/08/10 07:01 PM.

Re: static vs. dynamic compression [Re: dbran451] #608078 02/08/10 07:07 PM 02/08/10 07:07 PM
Joined: Jul 2005 Posts: 8,647 ELYRIA,OH B blownzoom440
blownzoom440 B Joined: Jul 2005 Posts: 8,647 ELYRIA,OH	110

Re: static vs. dynamic compression [Re: blownzoom440] #608079 02/09/10 01:02 PM 02/09/10 01:02 PM
Joined: Nov 2003 Posts: 654 ohio D dbran451 OP mopar
dbran451 OP mopar D Joined: Nov 2003 Posts: 654 ohio	I'll bump this once any other thoughts

Re: static vs. dynamic compression [Re: dbran451] #608080 02/09/10 01:28 PM 02/09/10 01:28 PM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	i would think 110 would be plenty. i'v been playing with that same calculator to figure pump gas use. its said that if you keep your dynamic compression under 9:1 your safe on pump gas, but is that with a cast iron head or an aluminum head? anyone know? http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: static vs. dynamic compression [Re: mopar dave] #608081 02/09/10 02:38 PM 02/09/10 02:38 PM
Joined: Feb 2005 Posts: 982 western pennsylvania b1dartsport super stock
b1dartsport super stock Joined: Feb 2005 Posts: 982 western pennsylvania	Quote: i would think 110 would be plenty. i'v been playing with that same calculator to figure pump gas use. its said that if you keep your dynamic compression under 9:1 your safe on pump gas, but is that with a cast iron head or an aluminum head? anyone know? My aluminum headed small block is 9.7 dynamic and 11.4 static and runs fine on pump on street & strip. I did a lot of smoothing ridges off pistons & combustion chambers while assembling it. I think another question in the equation is quench. I have mine set at .039. Tight quench makes a lot of difference in detonation resistance. Just my

Re: static vs. dynamic compression [Re: b1dartsport] #608082 02/10/10 05:01 AM 02/10/10 05:01 AM
Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,042 Mt Morris Michigan	ok, my quench was .039, but will bee .040 with the new sce gasket. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

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