110 octane over pushing these vehicles?

[Brian O Conner]

A lot of you guys have used race gas but it is never listed which octane rating you guys were using. So my question is this is 110 octane pushing these cars too far? I have my engine rebuilt with low compression pistons and a lot of mods to help cool this thing down but is 110 octane going to be beyond what this car is capable? Also thank you to the people that have helped me out on these forums.

 

[bryanwheat]

What do you mean pushing the car too far? The fuel doesn't burn hotter, it is just less resistant to detonation.

 

[97-gst]

higher the octane the less likely u are to detonate and it allows you to run more boost with less knock. IF E85 is available in your area i would use that though

 

[jtmcinder]

Please, no-one read the above as suggesting you can just fill your tank with E85 and drive. It requires significant tuning to run E85.

 

[Brian O Conner]

I tried that with my caddilac because it was burning really hot and my engine was smoking so I tried e85 and for the most part it ran better but there was some fuel problems were it seemed like a lack of fuel.

 

[madmaxxx]

Yeah, please don't use E85 unless you tune and have the correct set up for it.

 

[clipto]

I love VP Q16 race gas it really brings out some power.

 

[snowborder714]

Using a higher octane gas will only benefit if you tune the car for it. If you have run a car on both 93 and 116, you probably won't notice a huge difference unless you change the tune to take advantage of the higher octane.

I used to run 116 in my car for track days before E85 came into my area. It gets really expensive really quickly though if you stick with just race gas.

 

[bryanwheat]

Using a higher octane gas will only benefit if you tune the car for it. If you have run a car on both 93 and 116, you probably won't notice a huge difference unless you change the tune to take advantage of the higher octane.

I used to run 116 in my car for track days before E85 came into my area. It gets really expensive really quickly though if you stick with just race gas.

+1. More timing and a leaner mixture on race gas will really wake about any setup up. But race gas alone will show no benefits on a stock engine.