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Re: Detonation
[Re: JoesMopar]
#520146
11/08/09 11:38 PM
11/08/09 11:38 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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it's too much (or too fast) timing or not enough octane to support your current timing curve whether it's correct or too much. Ideally you want to optimize your timing and then run enough octane to support it.
live every 24 hour block of time like it's your last day on earth
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Re: Detonation
[Re: JoesMopar]
#520157
11/09/09 03:42 PM
11/09/09 03:42 PM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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put some good octane in there & (1) set your initial where your cam/eng likes it (2) shorten the slots for 36-38 total (vac adv (if used)disconnected) (3) play w the spring combo so you get a fast a curve as possible but staying just under the pinging point as you run it thru the gears @ WOT on your hottest/driest day (4) hookup the vac adv & add as much of it as it will take without pinging (or missing from too much overall timing) @ PART throttle on your hottest driest day. Get each stage near perfect then the next one(& in order) so that nothing is being left on the table.
live every 24 hour block of time like it's your last day on earth
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Re: Detonation
[Re: RapidRobert]
#520159
11/09/09 06:05 PM
11/09/09 06:05 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Quote:
put some good octane in there & (1) set your initial where your cam/eng likes it (2) shorten the slots for 36-38 total (vac adv (if used)disconnected) (3) play w the spring combo so you get a fast a curve as possible but staying just under the pinging point as you run it thru the gears @ WOT on your hottest/driest day (4) hookup the vac adv & add as much of it as it will take without pinging (or missing from too much overall timing) @ PART throttle on your hottest driest day. Get each stage near perfect then the next one(& in order) so that nothing is being left on the table.
But he stated starting problems when he had 36 total? This is usually to short of slots where the
real initial not idle advance is too far ahead for his combo. I like a longer slot to lessen starter kickback and some like shorter slots Oh well tomato tomato?
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The key here is to leave the vacuum advance out of the equation ( disconnected ) until you get the pinging problem sorted out. Then play with the vacuum rate - also ported or manifold source to see what works best.