recommended pump timing?
recommended pump timing?
Can any of you folks recommend a good setting given the stuff in my sig? I have it set at 17 degrees now, which is what I lowered it to when I installed the cam. But since the gasket popped anyways, Im looking to bump the timing up some more.
I gained about .005 in the squish area when I had the head decked and put in the gasket so I think my compression is a little lower. I wouldnt expect anything noticeable but I did have to tweak the AFC for some more fuel to get the same take-off power.
Raising the timing would raise the cylinder pressures and hopefully help with power and smoke on the low end.
20 to 22 degrees sound like craziness to you?
I gained about .005 in the squish area when I had the head decked and put in the gasket so I think my compression is a little lower. I wouldnt expect anything noticeable but I did have to tweak the AFC for some more fuel to get the same take-off power.
Raising the timing would raise the cylinder pressures and hopefully help with power and smoke on the low end.
20 to 22 degrees sound like craziness to you?
FWIW, you gained an extra .020" in compression height when you put the .020" gasket in, which is a full point loss in compression. Also, generally raising the timing raises the power band up. You might want to look into dropping it down a bit. But the loss of compression is the big reason you have lost bottom end.
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