Hold down clamp

[Ron Gusack]

Is there a hold down clamp made that will put pressure on the center of the distributor base where it meets the gasket? All the ones I see do not get close to the center. Mine leaks vacuum at the base of the distributor on the passenger side. I'd rather not have to make one if I don't have to.

[Ron Gusack]

I put some RTV around the top of the adjustable collar and it helped. I'm pulling close to 8 inches now.

[Dave Ribeiro]

Ron,


If it starts leaking again , use only the Ultra - Permatex !!! It stops exhaust , oil & air leaks for good, much better than the regular stuff ...

[Lew Silverman]

Ron, Here's the one I'm going to try -

Made by Dewzen, who sponsor Danny Waters Jr.

http://www.shop.dewzen.com/Distribut...m1plqscsfapp05

I've never been happy with the older style stamped-metal clamp which seems to load the distributor sideways instead of tightening it down.

Lew

[Jeff Lee]

drill & tap the block for another clamp on the other side.

[Dana Fitzpatrick]

I hope you find a solution,Ron. But I can't resist. After just dealing with a rear end cover sealed up with it, use some Right Stuff sealer on it. You won't even need a clamp! LOL.

[Tom Goldman]

The MSD 7905 hold down clamp is the strongest Chevy type clamp I've found.
It's made for holding magneto's which are notoriously difficult to keep from moving.
I used to silicone the base gasket, but I've since machined an O-ring groove in the collar and it works great, no vacuume leaks and it's a lot easier to phase the distributer.

[Ron Gusack]

Thanks for all the replies, you guys are the best.

Dave, I used Ultra black. I just called it RTV because I'm a slow typist.

Lew, If I knew that clamp was deep enough to pressure the center of the collar, I'd buy it.

Jeff, I thought about putting another clamp on it, but I'm looking for an easy way out first.

Dana, My tube of Right Stuff was like a brick. been to long I guess.

Tom, I see that the 7905 uses a stud. This is leaking between the OD of the distributor housing and the ID of the collar and maybe some where the split is in the collar.

[Ed Wright]

Tom has the best answers.

[Ron Gusack]

Originally Posted by Tom Goldman

The MSD 7905 hold down clamp is the strongest Chevy type clamp I've found.
It's made for holding magneto's which are notoriously difficult to keep from moving.
I used to silicone the base gasket, but I've since machined an O-ring groove in the collar and it works great, no vacuume leaks and it's a lot easier to phase the distributer.

Rotor phasing isn't necessary unless the car has EFI or a crank trigger, right? I've only done that when I was running a crank trigger.