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Old 07-18-1999, 01:43 PM   #1 (permalink)
Shawn
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Join Date: Dec 1998
Location: Chicago, IL. USA
Posts: 77
Question Highest comp. ratio on pump gas?

Right now I'm running 10.5:1 on 92octane pump gas...I have a new set of heads I want to put on the car, but with the pistons I have the compression ratio will jump to about 11.25:1 does anyone know if this will work? I have run 11:1 on 92 octane along time ago when the gas wasn't 10% ethanol and all....email me if you can! Thanks
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Old 07-18-1999, 02:58 PM   #2 (permalink)
David Gagnard
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Location: Marksville, Louisiana
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Shawn;

You may or may not have problems with that much compression. Seems you are on the edge though and I think you will likely have some problems at some time. 10.5-1 would be the most I would feel comfortable with.

David

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Old 07-19-1999, 11:27 AM   #3 (permalink)
superpro
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Location: Dallas, TX. USA
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I have seen it work before on a 88 Mustang. He had aluminum heads, Hood scoop (cooler air intake temp), not much timing, and used a bottle of 104 Octane booster in every tank of gas.

I cannot guarantee it will work on your car because of obvious reason---not all 11.25:1 motors are the same.

I would have the heads worked on to reduce the compression to be on the safe side.

Oh try it----you may may work!!!!

Be sure to check your piston to valve clearance.

Good luck.


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347 SVO block, 21# of NOVI boost, Edelbrock heads,150 shot NOS, SVO EPEC, Tremec TKO, Griggs (Torque arm, Panhard bar, Front end), and still street legal. Kinda.
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