How much compression can you really run...

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Dec 7, 2004 | 10:25 PM

#21

DrkPhx

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From: St. Michael, MN.

Vince - Off topic, but what size injectors do you use for your setup and are they maxed out?

Dec 8, 2004 | 06:10 AM

#22

VINCE

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From: Valrico, Florida

Quote:

Originally Posted by DrkPhx

Vince - Off topic, but what size injectors do you use for your setup and are they maxed out?

I am running 42lb injectors and no I am no where near maxed out.

Dec 8, 2004 | 07:51 AM

#23

FEAR THE LS1

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From: Hot Rainy Humid +2000 DA South Florida

I would say if your running anything on the street over 11.0 CR I would use NGK TR6 Plugs.

Dec 8, 2004 | 01:44 PM

#24

VINCE

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From: Valrico, Florida

Quote:

Originally Posted by FEAR THE LS1

I would say if your running anything on the street over 11.0 CR I would use NGK TR6 Plugs.

Yes.. I forgot to mention I run TR6 plugs as well and if you plan to go really high on the compression I would run even colder plugs..

Dec 8, 2004 | 02:13 PM

#25

LASTLS1

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From: Lombard .IL

I ran 12.5 to 1 on 93 octane with 28 deg of total advance. No problems. NO KR.

Dec 8, 2004 | 02:52 PM

#26

VINCE

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From: Valrico, Florida

Quote:

Originally Posted by LASTLS1

I ran 12.5 to 1 on 93 octane with 28 deg of total advance. No problems. NO KR.

It must be the cold weather up there

I have less than 12.0 to 1 compression and on a hot day I detonate on 93 octane with 28 degree's of timing. When I say hot I mean 90 plus degree's out..

Dec 8, 2004 | 07:02 PM

#27

XLR8NSS

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From: Deep in the seedy underworld of Koonerville

Quote:

Originally Posted by VINCE

Guys we have tools now that allow us to run radical setups. I am a street racer. My compression could be MUCH higher if I wanted it to be because I use this simple tool called the Timing Tuner. Right now I am below 12.0:1 compression and I honestly think with the timing tuner I could run 13.5:1 compression with the timing reduced to like 15 to 18 on pump gas with no detonation, but for racing I could run race gas and put the timing up to 28 degree's and be fine..

The question is how radical do you want to go? My car with 13.5:1 compression and race gas would make some SERIOUS power and with reduced timing on pump gas I would still make between 530-550rwhp. Honestly I dont know why many do not do this.. I thought of this idea when FMS was building the SS, but I was afraid to be the pioneer.

Maybe one day I will grow some ***** and go back and let Allan do what he really wanted to do

Vince - That line of thought about running lower timing and HIGH compression is VERY interesting. I wonder how much compression could be got away with on pump gas by just lowering timing. Were the 13.5:1 and 15-18 degrees of timing something you just spit out or were those numbers you and Allan talked about?

A "variable" naturally aspirated engine.

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