compression too high for a supercharger?

94' Cobra 351 · January 7th, 2007, 06:04 PM

My mustang is running at 10.5:1 compression and I was wondering if this is way too high to run a supercharger at 6lbs? i know ideal compression is around 8.5-9 but I wasn't sure how harmful it would be to the engine if i end up doing this

Justincredible · January 7th, 2007, 07:14 PM

8:1-9:1 is where you need to be with a blower engine.

Darrell · January 8th, 2007, 03:16 AM

Yes it is too much. How do you know it is 10.5:1? Are the pistons dished? If so what is the volume? What is the valve relief volume? Bore and stroke? Head gasket compressed thickness?

autostang03gt · January 10th, 2007, 11:05 PM

you gotta have a super strong block and some really high octane gas to boost a high compression car

January 7th, 2007, 06:04 PM	#1
94' Cobra 351 Regular Join Date: Dec 2006 Posts: 354	compression too high for a supercharger? My mustang is running at 10.5:1 compression and I was wondering if this is way too high to run a supercharger at 6lbs? i know ideal compression is around 8.5-9 but I wasn't sure how harmful it would be to the engine if i end up doing this

January 7th, 2007, 07:14 PM	#2
Justincredible Regular Join Date: Sep 2006 Location: Ky Posts: 482	8:1-9:1 is where you need to be with a blower engine. __________________ BIVENS RACE CARS

January 8th, 2007, 03:16 AM	#3
Darrell MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 6,449	Yes it is too much. How do you know it is 10.5:1? Are the pistons dished? If so what is the volume? What is the valve relief volume? Bore and stroke? Head gasket compressed thickness? __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

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January 10th, 2007, 11:05 PM	#4
autostang03gt Regular Join Date: Oct 2006 Location: Southern IL near SIU!!! Posts: 68	you gotta have a super strong block and some really high octane gas to boost a high compression car

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