Octane Boost
#3
If you live in Cal, like me, the highest octane you can get is 91. If you have anything over 9 to 1 compression, and drive it a little hard you will need some. I lowered my timming, to stop pinging, but for performance, it really hurt that
#6
#7
I also think you would want to try adjusting the timing first if you think that could be the cause. Assuming you have a timing light, checking and adjusting the timing should take 5 minutes and cost nothing. It also is much better for the engine if that turns out to be the problem and you correct it. An improperly timed engine is subject to faster wear, poor running, poor fuel economy, decreased power, and increased likelihood of overheating.
#8
No,not getting knocking until I put the pedal to the metal during normal driving I dont hear it at all.the timing is two to three degrees advance then stock had a little work down to the motor and using a HEI /vacuum adavance. I use nothing but Sunoco 93
#9
I've read that a little bit of knocking ("light pinging") under heavy load like that is actually normal. But I can understand your wanting to get rid of it if possible.
#10
I guess living in NJ has one benefit. I can buy 112 octane leaded fuel from the local race tracks. OK, it is not cheap at $13/gallon, but it makes the car run nice. In addition u can set timing to 14 degree BTDC for a nice torque boost.
#11
#12
My 461-10:1 comp. won't run on 93 octane unless I back timing off to 32..try this if you want to run more timing..
http://www.kemcooil.com/products.php?cId=4
http://www.kemcooil.com/products.php?cId=4
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cfair
General Questions
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September 13th, 2009 05:00 AM