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MIXING OCTANE GAS Does it work? #979731
04/24/11 08:52 PM
04/24/11 08:52 PM
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Harrisville,PA
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GRAYBO Offline OP
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Last year I mixed 50% Turbo blue and 50% 93 pump gas. Is this a waste of time or does it help. My 440 engine is only 10.75-1 compression so it will run on pump gas without a problem. Thanks

Re: MIXING OCTANE GAS Does it work? [Re: GRAYBO] #979732
04/24/11 08:58 PM
04/24/11 08:58 PM
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Northern Indiana
Dunnuck Racing Offline
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If it runs well on pump gas,racing fuel mixed in is usually a waste.There are exceptions to this,such a higher rpm engines that can use the faster burning a real race fuel offers.
If you are on the edge of detonation while cruising around and not racing,you might be better playing it safe with a mix though.
Keith

Re: MIXING OCTANE GAS Does it work? [Re: Dunnuck Racing] #979733
04/24/11 09:04 PM
04/24/11 09:04 PM
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IN
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ahy Offline
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Therem are lots of variables. That said, 10.75 is on the high side for pump gas. It may do fine cruising on pump premium but under heavy load or when hot detonate. I think mixing in some race gas when pushing it is a good idea for your combo. Cheap insurance.

Re: MIXING OCTANE GAS Does it work? [Re: GRAYBO] #979734
04/24/11 09:06 PM
04/24/11 09:06 PM
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Akron, Ohio
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I go through this debate every year. My motor is supposedly 12:1 or close to it. It runs perfectly fine on 93 octane on the street even with me pounding on it every now and then. But before I go to the track I go through the hassle of driving 20 minutes each way to put one gallon of 110 Cam2 in each jug for added security, it's a pain. My biggest fear is getting a batch of crappy pump gas and melting my motor, but I guess there could be a bad batch of race gas here and there. I think I'm perfectly fine on straight pump gas but afraid to try it at the track. I only have 150 cranking compression with my camshaft, also have aluminum heads and only run 36 total timing.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: MIXING OCTANE GAS Does it work? [Re: Dunnuck Racing] #979735
04/24/11 09:21 PM
04/24/11 09:21 PM
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Harrisville,PA
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GRAYBO Offline OP
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Quote:

If it runs well on pump gas,racing fuel mixed in is usually a waste.There are exceptions to this,such a higher rpm engines that can use the faster burning a real race fuel offers.
If you are on the edge of detonation while cruising around and not racing,you might be better playing it safe with a mix though.
Keith





Thanks to all. I guess.... Since last year I did pretty well with no problems mixing I should just stay with it..... Thanks guys. GRAYBO

Re: MIXING OCTANE GAS Does it work? [Re: GRAYBO] #979736
04/24/11 09:22 PM
04/24/11 09:22 PM
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Harrisville,PA
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GRAYBO Offline OP
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I guess I'll just get off my wallet and do the thing that got me the ring.

6601257-ten0champ.jpg (88 downloads)
Re: MIXING OCTANE GAS Does it work? [Re: GRAYBO] #979737
04/24/11 10:19 PM
04/24/11 10:19 PM
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LONG ISLAND
fishy340 Offline
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Quote:

Last year I mixed 50% Turbo blue and 50% 93 pump gas. Is this a waste of time or does it help. My 440 engine is only 10.75-1 compression so it will run on pump gas without a problem. Thanks


YES! probably slow u down with that compression

Re: MIXING OCTANE GAS Does it work? [Re: ProSport] #979738
04/24/11 10:22 PM
04/24/11 10:22 PM
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LONG ISLAND
fishy340 Offline
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Quote:

I go through this debate every year. My motor is supposedly 12:1 or close to it. It runs perfectly fine on 93 octane on the street even with me pounding on it every now and then. But before I go to the track I go through the hassle of driving 20 minutes each way to put one gallon of 110 Cam2 in each jug for added security, it's a pain. My biggest fear is getting a batch of crappy pump gas and melting my motor, but I guess there could be a bad batch of race gas here and there. I think I'm perfectly fine on straight pump gas but afraid to try it at the track. I only have 150 cranking compression with my camshaft, also have aluminum heads and only run 36 total timing.


your smart keep doin what u do,my cuda is fine on pump 93,but if im gonna bang it(1 gal of race to 4 pump)is worth not doin 8 g's worth of damage

Re: MIXING OCTANE GAS Does it work? [Re: fishy340] #979739
04/24/11 10:27 PM
04/24/11 10:27 PM
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
ProSport Offline
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Akron, Ohio
Quote:

Quote:

I go through this debate every year. My motor is supposedly 12:1 or close to it. It runs perfectly fine on 93 octane on the street even with me pounding on it every now and then. But before I go to the track I go through the hassle of driving 20 minutes each way to put one gallon of 110 Cam2 in each jug for added security, it's a pain. My biggest fear is getting a batch of crappy pump gas and melting my motor, but I guess there could be a bad batch of race gas here and there. I think I'm perfectly fine on straight pump gas but afraid to try it at the track. I only have 150 cranking compression with my camshaft, also have aluminum heads and only run 36 total timing.


your smart keep doin what u do,my cuda is fine on pump 93,but if im gonna bang it(1 gal of race to 4 pump)is worth not doin 8 g's worth of damage




It's a pain but definitely better than tearing up parts.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual






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