Conservative Timing?

Flcracker

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Hey guys, question about timing. What's considered conservative timing for a newly built sleeved coyote? What would be considered aggressive? Thanks!
 

slow306stang

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It mainly depends on what fuel is being used, IAT's, and knock sensors. For e85 i'd consider 21-22 degrees with IAT's below 130 degrees to be on the aggressive side
 

Riddick

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Hey guys, question about timing. What's considered conservative timing for a newly built sleeved coyote? What would be considered aggressive? Thanks!
Lots of variables, 3 limiting factors are compression, how much boost, and fuel used. For this case let's assume you are running 11:1 compression and 93 octane/ E-85.

For 93 octane conservative timing would be 14-15 degrees and aggressive would be 18-19 degrees. For E-85, despite what is mentioned above I would consider 20-21 degrees conservative and 24-25 on the aggressive side.


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slow306stang

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Lots of variables, 3 limiting factors are compression, how much boost, and fuel used. For this case let's assume you are running 11:1 compression and 93 octane/ E-85.

For 93 octane conservative timing would be 14-15 degrees and aggressive would be 18-19 degrees. For E-85, despite what is mentioned above I would consider 20-21 degrees conservative and 24-25 on the aggressive side.


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You are not wrong in your statement by any means. I'm stuck in the mindset of my car at 12:1 comp, e85, and 20-30psi
 

Riddick

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You are not wrong in your statement by any means. I'm stuck in the mindset of my car at 12:1 comp, e85, and 20-30psi
Good info and perfect example for the op. As compression and boost increases it's safe to say timing will decrease. Compare his set up above to mine. I'm only running 9 psi on a stock 11:1 compression motor but I see 24.5 peak timing on E-85. If I were to increase compression or boost my timing would slowly decrease.

Back to original question..... Quite a few variables come into play to say the least.

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