Timing Bump Prep
- Thread starter forzalife
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Top it off with sent fresh fuel and bump the timing up. Be sure to listen for pinging! I would start at 12* with the spout out and go up a degree at a time. Most find 14*base to be the sweet spot.
f8tlfiveo
My wife likes my spool and blow-off valve.
Yes you should run 93, ttop is saying to top it off with 93. I put paint marks on 10, 12, 14* that way it's easier to see
Grabbin' Asphalt
5 Year Member
Remember if you have a half tank of 87 and you put 93 in you will half the mix to 90 octane.
But hey guys check out what these guys have to say about this http://m.mustangforums.com/forum/showthread.php?t=423225&styleid=8 my goals are to increase hp and these guys are saying that I shoild advance timing only to the point of no engine knock with regular octane gas... their saying more advance increases hp but the higher octane negates this.. what do u guys think?
The higher octane facilitates you running more timing and decreases the threshold for detonation. I would run the premium fuel with the timing turned up personally!
Grabbin' Asphalt
5 Year Member
Sener
You've got a couple options, you could....
a. Use 87 and advance the timing as far as you can and save $ at the 87 timing threshold. Which it will change once you reach Hot weather, sitting in traffic during summer etc, then you would have to back it off to still use 87.
b. Use a middle or higher octane 89, 90 or 93 during the summer to help you to Not keep changing the timing when Hot weather hits.
c. Use 89 as a good middle one and add the 93 during Hot summer months.
d. Use 93 and find the timing limit, while utilizing the highest compressed explosion in your cylinders for peak HP potential.
Remember the higher the octane is, the less resistant to pre~detonation. Extremely critical in non~forged pistons, power adders like NO2 or blowers. You can melt things quick if you do not regulate pre~detonation.
If I'm choosing for most possible HP's in a motor, similar to a SC or blower, compression in the cylinders is what I want. So taking 87 igniting sooner over ~ 93 igniting later(more compression) is leaving HP's on the table. How many, who really knows
We need a dyno run using both octanes and their timing limit threshold to find out the true answer to the added compression pay off with 93. We need to start googling....lol
You've got a couple options, you could....
a. Use 87 and advance the timing as far as you can and save $ at the 87 timing threshold. Which it will change once you reach Hot weather, sitting in traffic during summer etc, then you would have to back it off to still use 87.
b. Use a middle or higher octane 89, 90 or 93 during the summer to help you to Not keep changing the timing when Hot weather hits.
c. Use 89 as a good middle one and add the 93 during Hot summer months.
d. Use 93 and find the timing limit, while utilizing the highest compressed explosion in your cylinders for peak HP potential.
Remember the higher the octane is, the less resistant to pre~detonation. Extremely critical in non~forged pistons, power adders like NO2 or blowers. You can melt things quick if you do not regulate pre~detonation.
If I'm choosing for most possible HP's in a motor, similar to a SC or blower, compression in the cylinders is what I want. So taking 87 igniting sooner over ~ 93 igniting later(more compression) is leaving HP's on the table. How many, who really knows
We need a dyno run using both octanes and their timing limit threshold to find out the true answer to the added compression pay off with 93. We need to start googling....lol
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Hmmm well I live in south florida where most of the year its warm, hot, or baking hot.. so I guess ill go with d and put 93 octane. Right now its pretty cool so im gonna bump to 12 on 87 till my gas runs out then switch to premium.Sener
You've got a couple options, you could....
a. Use 87 and advance the timing as far as you can and save $ at the 87 timing threshold. Which it will change once you reach Hot weather, sitting in traffic during summer etc, then you would have to back it off to still use 87.
b. Use a middle or higher octane 89, 90 or 93 during the summer to help you to Not keep changing the timing when Hot weather hits.
c. Use 89 as a good middle one and add the 93 during Hot summer months.
d. Use 93 and find the timing limit, while utilizing the highest compressed explosion in your cylinders for peak HP potential.
Remember the higher the octane is, the less resistant to pre~detonation. Extremely critical in non~forged pistons, power adders like NO2 or blowers. You can melt things quick if you do not regulate pre~detonation.
If I'm choosing for most possible HP's in a motor, similar to a SC or blower, compression in the cylinders is what I want. So taking 87 igniting sooner over ~ 93 igniting later(more compression) is leaving HP's on the table. How many, who really knows
Shakerhood
Dirt-Old 20+Year Member
Decipha
Active Member
keep in mind this only applies to a stock tune/engine
You go changing heads and you may need much more base timing with no tune
theres an mbt reference chart in my sig to get you in the ballpark
You go changing heads and you may need much more base timing with no tune
theres an mbt reference chart in my sig to get you in the ballpark
Decipha
Active Member
I checked out your site.I had no idea there was this much info was available especially for a stock engine
I've seen as much as 20 rwhp just by bumping the timing and bypassing the coolant from the egr removed air silencer etc. that's bang for the buck when we are only talking about your time and not $ spent on parts!
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