turtlevette
The Turdle
Now i'm messing with my HEI. I've never used a timing light because the timing mark always slips and is never in the right spot. I've always set timing by advancing until i get a bit of knock under hard acceleration then back off a tad. I've recently rejetted the QJ so now it takes more timing. I can advance to the point where i can't start the car.
I believe the answer lies in getting more mechanical advance. If you look at the way the weights and cam are built, the weight arm flattens out against the cam limiting how much it will push the cam. I don't think i'm getting a full 20deg of mechanical advance. I don't think i've ever gotten any decent amount of advance which is kind of depressing as this thing has never seen it's full potential due to this shit HEI. I'll have to take a bunch of pictures. The cam is worn and looks nasty. The springs on it are the heavy ones. I went to the lightest gold springs.
I just did some experimenting by grinding off the tips of the weights. This allows the weight arm to continue to push the cam up to the point where the weighted end hits the inside of the rotor.
It's getting dark now so i'll have to wait to keep playing. Has anyone else ever messed around with this?
I have a timing cover and need to finally install it to get some quantifiable data.
I believe the answer lies in getting more mechanical advance. If you look at the way the weights and cam are built, the weight arm flattens out against the cam limiting how much it will push the cam. I don't think i'm getting a full 20deg of mechanical advance. I don't think i've ever gotten any decent amount of advance which is kind of depressing as this thing has never seen it's full potential due to this shit HEI. I'll have to take a bunch of pictures. The cam is worn and looks nasty. The springs on it are the heavy ones. I went to the lightest gold springs.
I just did some experimenting by grinding off the tips of the weights. This allows the weight arm to continue to push the cam up to the point where the weighted end hits the inside of the rotor.
It's getting dark now so i'll have to wait to keep playing. Has anyone else ever messed around with this?
I have a timing cover and need to finally install it to get some quantifiable data.
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