Increase distributor swing

[JMB711]

Went to verify timing on a new to me 70 original slant 6 yesterday. The distributor will not swing far enough to advance the timing. it hard stops at TDC or perhaps 1 degree advanced. Is there a procedure to reposition the distributor for more advance swing?
Is that even possible with the tower of power???
Thank you

My first Mopar and boy do I have a lot to learn...lol

 

[moparleo]

Look in your Service manual how to properly index the distributor.

 

[JMB711]

Will do as I have a manual. I thought it might be factory, as engine timing calls for TDC. And would not put it past the factory, back in the day, make distributor hard stop right at TDC. lol

 

[Challenger RTA]

Food for thought. I had a 6 one time confuse me one time. Check the distributor gear wore out and shaft wore.

 

[JMB711]

10-4 eventually.

 

[Ricks72Chlgr440]

If you remove the distributor and turn it over you will see where you can loosen a bolt to change how much "swing" it has. It may be possible to change this to get you where you want to go.

 

[JMB711]

So if the dist hold down bolt goes through this plate thats a factory limiter. I wonder why they did that???
Well I'll have a better look by the end of the week when renting a power washer and blast the 1/4 to 3/8 thick oily greasy sludge off the engine. I changed the cap and rotor a few days ago and came away with grease up to my elbows..lol
I live above my neighbors on the hill...They gonna hate Mopars pretty soon....

 

[Ricks72Chlgr440]

So if the dist hold down bolt goes through this plate thats a factory limiter. I wonder why they did that???
Well I'll have a better look by the end of the week when renting a power washer and blast the 1/4 to 3/8 thick oily greasy sludge off the engine. I changed the cap and rotor a few days ago and came away with grease up to my elbows..lol
I live above my neighbors on the hill...They gonna hate Mopars pretty soon....

View attachment 147535

Hey, if moving that plate fixes your problem then it's an easy fix. Why the engineers did certain things... who knows?! Every manufacturer had their own nuances.

 

[JMB711]

They certainly did. Eventually I will take a look and perhaps can adjust it for more timing.
If for some reason its "pegged" out to where more timing isn't possible, I found this on e-bay.

 

[Ricks72Chlgr440]

They certainly did. Eventually I will take a look and perhaps can adjust it for more timing.
If for some reason its "pegged" out to where more timing isn't possible, I found this on e-bay.

View attachment 147570

I may be wrong, but seems to me if you cannot adjust the plate for more advance you might simply be able to move the spark plug wires one over and readjust the plate back all the way and start that way. Would certainly be cheaper than buying a "fix" like this. Just a thought. Maybe someone with more /6 experience could chime in.

 

[JMB711]

Depends where that factory plate on it has been set? It could already be maxed out. I wont know till I pull it.
$35 bucks is nothing.....Chump change in this past time/ hobby...lol

 

[Katfish]

I was wondering the exact same thing.
Good input Rick72