Old distributor refresh, timing questions

[jeff74]

Was messing with my distributor today, I bought a moroso advance kit and gear shims. The old springs are pretty loose and the gear has about .080 of play. I shimmed the gear to about .015 of play and the distributor will still drop in and sit down on the intake without a gasket, so I think I'm good there for clearance.

I installed the included copper bushing, the old plastic one had fallen off. From what I'm figuring (and online calculatoring) .. I have about 17 degrees of mechanical advance, so 34 crank degrees?
Am i down to welding the slot closed a bit to limit the advance? From what I'm reading the vortecs like 8-10 degrees at idle and 30-32 total?

[RichardJ]

>>I shimmed the gear to about .015 of play and the distributor will still drop in and sit down on the intake without a gasket, so I think I'm good there for clearance.<<

It is good that you checked it. 30 years ago I had shimmed the shaft on my six cylinder HEI and found that it would not sit in all the way and was pushing against the oil pump.

>>I installed the included copper bushing, <<

Hobby stores have copper tubing in incremental sizes that will slip inside each other. Easier to build up and work back if needed.

[jeff74]

Originally Posted by RichardJ

>>I shimmed the gear to about .015 of play and the distributor will still drop in and sit down on the intake without a gasket, so I think I'm good there for clearance.<<

It is good that you checked it. 30 years ago I had shimmed the shaft on my six cylinder HEI and found that it would not sit in all the way and was pushing against the oil pump.

>>I installed the included copper bushing, <<

Hobby stores have copper tubing in incremental sizes that will slip inside each other. Easier to build up and work back if needed.

Thanks.
Good idea with the copper tubing, I probably have a couple sizes around here..

[geezer#99]

Do you have the distributor part number?
I have a motors manual with the timing specs.
Might be in there.

[jeff74]

Originally Posted by geezer#99

Do you have the distributor part number?
I have a motors manual with the timing specs.
Might be in there.

I have 1112002 9J30, if that's the part number..
Thanks

[geezer#99]

Here you go.
It’s listed in the 69/70 year.

[geezer#99]

Here’s a better pic.

[jeff74]

Cool, thanks.
I guess I was pretty close, I figured 17 degrees of mechanical advance by making some marks and eagle eyeing it..

I ended up welding a short piece of key stock to the distributor plate as a stop , it's set right around 10 degrees for now