Distributor rebuild

[rrubyxsh]

Have a 1981 FJ40 distributor that need a new vaccume advance and rebuild. Who's rebuilding?

 

[ceylonfj40nut]

@4Cruisers might

 

[rrubyxsh]

@4Cruisers might

Sent a private message to @4Cruisers and waiting for responce. I think he's said he was trying to get some projects done. Thanks

 

[wimberosa]

The vacuum advance is getting extremely scarce to find. Its plausible to rebuild the primary diaphragm (not HAC diaphragm) if you want to keep it stock. I documented it in a thread awhile back...

Thread 'Refurb'ing a dizzy two diaphragm vacuum advance'

Jan 8, 2026

@NeverGiveUpYota @62Cruiser @duffontap @ducktapeguy @65swb45 @4Cruisers

I'm standing on the shoulders of giants here (see above members) ... but would like to close the loop on definitively how best to fix the diaphragms in vacuum advances. In this case I have a vacuum advance with both carb port and HAC port. I have split both port sides at the lip (which btw is actually pretty simple and took less than an hour opening both sides). I have two types of diaphragm materials on the way but am willing to try others until I nail it with proper...

• wimberosa
• Replies: 22
• Forum: 40- / 55-Series Tech

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[JohnnyC]

I have heard of people using flex seal on the vac diaphragm with success … just an idea if yours is bad and can’t find a replacement