Sign in to follow this  
scott12180

broken distributor cap

Recommended Posts

I have a new distributor cap for a 1930's Packard that I stupidly dropped off the table.  When it hit the ground it broke into several pieces. Oh well.  It happens sometimes.

 

But has anyone found a glue or some other method to repair a cracked or broken distributor cap so it won't arc? 

I hate to give up on it without trying something.

 

Thanks -- Luke

Share this post


Link to post
Share on other sites

Look at glue / epoxy for Bakelite repair as a possible method.  I have NEVER tried this but if I were it would be where I would look.

Share this post


Link to post
Share on other sites

Bite the bullet, get a new cap. Ask yourself, how much is the tow home going to cost versus buy another cap?

Edited by Friartuck (see edit history)
  • Like 2

Share this post


Link to post
Share on other sites

Look at Amazon for The Last Glue, I've had very good luck repairing broken tool housings with it,  I used it to glue bakelite  dist. cap for a 1930 Chrysler. Not a cheap glue, about $30 an ounce. How much is a new cap?

Share this post


Link to post
Share on other sites

Forgot to add that I would contact the mfg. tech. dept. to advise on how to use it for this purpose before buying it.

Share this post


Link to post
Share on other sites

It may work if none of the repaired cracks touch the contacts or come close to them. Thirties cars don't have as high a spark voltage as a modern car.

Edited by misterc9 (see edit history)

Share this post


Link to post
Share on other sites

You can TRY to glue it back together, but I'd lay another cap in, and use this repaired one as a spare.  For the internal cracks/repair lines, you need to seal them.  I've had good luck with cracked rare caps, again on the inside, by opening the crack with a dental pick, Dremel-drilling each end of crack or repair to stop propagation, then laying on five coats, one day apart, of epoxy fingernail polish (color not important on the inside). 

  • Like 1

Share this post


Link to post
Share on other sites

Right, typically a crack in a distributor cap collects carbon dust from the arc and the carbon center terminal wear. If you smooth the  crack so it isn't there, carbon can not lay in the line and cause a short. Same on outside to keep dirt out of crack that also may be conductive. 

 

Glue, smooth both sides and give it a try.

  • Like 1

Share this post


Link to post
Share on other sites
9 hours ago, Frank DuVal said:

Right, typically a crack in a distributor cap collects carbon dust from the arc and the carbon center terminal wear. If you smooth the  crack so it isn't there, carbon can not lay in the line and cause a short. Same on outside to keep dirt out of crack that also may be conductive. 

 

Glue, smooth both sides and give it a try.

Smooth it yes, but don't sand it. Sanding scratches will do the same as leaving the cracks unfilled. They can collect and contribute to carbon tracking. Fill and smooth it with cut-to-fit pieces of thin cardboard, manila folder, or business card stock, to fill and level the glue in the crack.

 

And stay away from fast cure epoxies. The faster they cure the sooner they let go. Slow cure marine grade epoxies are the best for strength and longevity.

 

Paul

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this