I ground off the flange on the GM dist. (and used the same hole in the GM shaft just switched the gears originally used a piece of pipe and original hold down. But decided I didn't like that and bought a collet and chevy hold down. Thought I marked the shaft good before I removed the old hold down but now when I reinstall it ; its off my mark I put on the engine so I didn't have to re-time. Think I don't have the collet the proper distance from end of shaft.
1) So I need to find some measurements from the end of shaft; to the gear and to the bottom(the part that actually sits on the block) of the collet (holddown)?
2) Also I've read about the pump pulling the shaft down if its
not seated all the way. If I just seat the shaft all the way
will the gear lineup? If so I could just seat the shaft all
the way down then move my collet down and tighten it up; but if the gear doesn't line up this is no good. Don't think
the shaft was all the way down to start with because the
new position allows it to set down further in the block which
is what is throwing it off my timing mark.
thanks for your help
David
1) So I need to find some measurements from the end of shaft; to the gear and to the bottom(the part that actually sits on the block) of the collet (holddown)?
2) Also I've read about the pump pulling the shaft down if its
not seated all the way. If I just seat the shaft all the way
will the gear lineup? If so I could just seat the shaft all
the way down then move my collet down and tighten it up; but if the gear doesn't line up this is no good. Don't think
the shaft was all the way down to start with because the
new position allows it to set down further in the block which
is what is throwing it off my timing mark.
thanks for your help
David