RPM Drop From Nuetral to Gear
Well, being out of town this weekend, I didn't get as much done as I would have liked. I did pull the distributor and noticed a few things...
1st- the reluctor was in an incorrect position. It was clocked slightly off where the roll pin goes (about 20* or so) and the roll pin was driven into the brass step to keep it from moving. I corrected the location of the reluctor making sure to use the correct roll pin slot to line it up.
2nd- The reluctor/pick-up gap was crazy wide! The quality of the pick-up seems horrible. Are all new MP magnetic pick-ups like this?? I noticed with vacuum fully applied, the gap was about .010", but without vacuum, it was close to .030". I didn't realize the gap changed that much with vacuum applied. Do they all do this???? I also noticed the magnetic pick-up was neither perfectly plumb (up and down) or straight (back to front) I actually replaced the pick-up assembly with a spare I had which was a lot straighter and plumb to the reluctor. The advance doesn't change nearly as much with vacuum either.
3rd- I replaced the heavy advance spring with the lightest one I had and shortened the advance slots to .155", which should give me about 16* advance. I'll adjust more as needed.
I didn't get a chance to fire it up, but will tonight.
Thanks again for the input guys. Once I get the timing nailed down, I'll post results and start trouble shooting the carb.
Well, being out of town this weekend, I didn't get as much done as I would have liked. I did pull the distributor and noticed a few things...
1st- the reluctor was in an incorrect position. It was clocked slightly off where the roll pin goes (about 20* or so) and the roll pin was driven into the brass step to keep it from moving. I corrected the location of the reluctor making sure to use the correct roll pin slot to line it up.
2nd- The reluctor/pick-up gap was crazy wide! The quality of the pick-up seems horrible. Are all new MP magnetic pick-ups like this?? I noticed with vacuum fully applied, the gap was about .010", but without vacuum, it was close to .030". I didn't realize the gap changed that much with vacuum applied. Do they all do this???? I also noticed the magnetic pick-up was neither perfectly plumb (up and down) or straight (back to front) I actually replaced the pick-up assembly with a spare I had which was a lot straighter and plumb to the reluctor. The advance doesn't change nearly as much with vacuum either.
3rd- I replaced the heavy advance spring with the lightest one I had and shortened the advance slots to .155", which should give me about 16* advance. I'll adjust more as needed.
I didn't get a chance to fire it up, but will tonight.
Thanks again for the input guys. Once I get the timing nailed down, I'll post results and start trouble shooting the carb.