Octane booster question.......
#1042301
07/28/11 08:18 PM
07/28/11 08:18 PM
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Joined: Nov 2003
Posts: 624 Modesto CA
BFASTER
OP
mopar
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OP
mopar
Joined: Nov 2003
Posts: 624
Modesto CA
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......if I put 91 octane and octane booster in my tank, would it somehow make the motor run hotter? She ran a little hot last night for no apparent reason.
I've been running Union 76 100 octane race gas, but had a bottle of O'Reilly Auto Parts brand booster in my garage that I wanted to try. Race gas is $7.79/gal here. Trying to save a little money. (please, no lectures) :
Mild 440 street motor, normal aspiration.
Last edited by BFASTER; 07/28/11 08:20 PM.
1969 Dodge Super Bee Hardtop
2007 Nissan Altima 3.5SE
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Re: Octane booster question.......
[Re: BFASTER]
#1042307
07/28/11 10:50 PM
07/28/11 10:50 PM
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Joined: Oct 2005
Posts: 4,968 WI
Dcuda69
master
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master
Joined: Oct 2005
Posts: 4,968
WI
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Quote:
Quote:
I doubt the booster made it run hot. Exactly how "mild" is your 440 that you need race gas over pump 91??
Don't NEED to....but it runs a helluva lot better than with anything else. Besides, 100 octane is really just "super Premium". (91 isn't what I would call Premium; used to be it was 93-94 octane)
Engine has MP .484 cam, aluminum Stealth heads, .030 over, Eddy RPM intake, stock elec. ignition and an old holley 750. About 9:1 cr.
OK...I fail to see how a alum. headed 9:1,484 cammed 440 runs "better" with 100 octane. But if it works for you..go for it! My 10.3:1 Eddy headed,solid roller 470" runs fine on 91 pump swill
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Re: Octane booster question.......
[Re: BFASTER]
#1042309
07/28/11 11:32 PM
07/28/11 11:32 PM
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Joined: Oct 2005
Posts: 4,968 WI
Dcuda69
master
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master
Joined: Oct 2005
Posts: 4,968
WI
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Quote:
Quote:
Quote:
Quote:
I doubt the booster made it run hot. Exactly how "mild" is your 440 that you need race gas over pump 91??
Don't NEED to....but it runs a helluva lot better than with anything else. Besides, 100 octane is really just "super Premium". (91 isn't what I would call Premium; used to be it was 93-94 octane)
Engine has MP .484 cam, aluminum Stealth heads, .030 over, Eddy RPM intake, stock elec. ignition and an old holley 750. About 9:1 cr.
OK...I fail to see how a alum. headed 9:1,484 cammed 440 runs "better" with 100 octane. But if it works for you..go for it! My 10.3:1 Eddy headed,solid roller 470" runs fine on 91 pump swill
My 440 also runs fine with 91, never said it didn't. Seriously....do I need a "race" motor to benefit from running 100 octane?
Theoretically....yes. The only benefit you would see would be lead, is the 100 octane leaded?? If not I would doubt you'll see a difference in a 9:1 motor. Again just my
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Re: Octane booster question.......
[Re: Dcuda69]
#1042310
07/29/11 12:34 AM
07/29/11 12:34 AM
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Joined: Aug 2003
Posts: 12,291 Kent, Wa
340SHORTY
Truck Nut
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Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
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octane booster pure bul- sh-t
I am truckless..
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Re: Octane booster question.......
[Re: BFASTER]
#1042311
07/29/11 02:09 AM
07/29/11 02:09 AM
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Joined: May 2011
Posts: 340 Alaska
73rrak
enthusiast
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enthusiast
Joined: May 2011
Posts: 340
Alaska
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Re: Octane booster question.......
[Re: Mr.Yuck]
#1042314
07/29/11 09:51 AM
07/29/11 09:51 AM
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Joined: Oct 2005
Posts: 4,968 WI
Dcuda69
master
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master
Joined: Oct 2005
Posts: 4,968
WI
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Quote:
"OK...I fail to see how a alum. headed 9:1,484 cammed 440 runs "better" with 100 octane. But if it works for you..go for it!"
you know what's wierd. My 5.2 5 speed 95 dak sport w/ nothing more than a computer upgrade and headers ran much better on 104 (unleaded) mix w/ 93 than straight 93. The truck picked up a little over a tenth and It seemed to run smoother. I only did it because a buddy of mine suggested it. I was thinking it was over kill as well. Maybe because it was a hot day????
I might understand that. Your computer(esp upgrsded)may add timing till it recognizes spark knock from a knock sensor. The 440 in the OP does not have that ability.
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Re: Octane booster question.......
[Re: Dcuda69]
#1042315
07/29/11 09:53 AM
07/29/11 09:53 AM
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Joined: Jan 2003
Posts: 24,562 Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
"OK...I fail to see how a alum. headed 9:1,484 cammed 440 runs "better" with 100 octane. But if it works for you..go for it!"
you know what's wierd. My 5.2 5 speed 95 dak sport w/ nothing more than a computer upgrade and headers ran much better on 104 (unleaded) mix w/ 93 than straight 93. The truck picked up a little over a tenth and It seemed to run smoother. I only did it because a buddy of mine suggested it. I was thinking it was over kill as well. Maybe because it was a hot day????
I might understand that. Your computer(esp upgrsded)may add timing till it recognizes spark knock from a knock sensor. The 440 in the OP does not have that ability.
got ya... his should run fine on 93 even at 38* total.
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Re: Octane booster question.......
[Re: Mr.Yuck]
#1042319
10/09/11 12:50 PM
10/09/11 12:50 PM
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Joined: Sep 2006
Posts: 1,139 West Tennessee
rbstroker
super stock
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super stock
Joined: Sep 2006
Posts: 1,139
West Tennessee
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Quote:
heres what i use. no problems easy install and it works. Not only can you run 91-93 and as much advance as you like, it adds about 25-40HP
http://www.snowperformance.net/product.php?pk=31
I have heard of alcohol and/or water injection for years. I think that some aircraft used it in the 40's. Do you use it on the street or at the track? Any associated issues whatsoever?
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Re: Octane booster question.......
[Re: rbstroker]
#1042320
10/09/11 03:50 PM
10/09/11 03:50 PM
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Joined: Sep 2003
Posts: 1,168 Vancouver, WA
MoparMarq
super stock
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super stock
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
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Quote:
I have heard of alcohol and/or water injection for years. I think that some aircraft used it in the 40's.
Garrett used water-methanol injection in their TPE-331 turboprop engine mounted in a Fairchild Metroliner. 60% +/- 2% methanol, 40% +/- 2% water mixture. Increased shaft horsepower from 1000 to 1100 at sea level. The aircraft are still being used to this day at FedEx/UPS cargo feeder airlines.
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