Thanks for this write up Cusser. I too did not know this seal could be a culprit. In fact, mine needs replacing pretty bad. Oil is leaking out where the cap joins the dist and the engine fan is blowing it all over everything, clear over to the drivers fender well and all over everything in between. I was wondering where the mess kept coming from.

One issue I have is mine is a 1990 and that seal only is listed up top 1989. I suppose the 90 dist is different. I'm researching that now

 

Ok I figured it out. It looks like since my 90 is carbed, the dist is the same as the 89.

 

Looks like you removed those Steelers stickers on your utility box too!

 

Ok, I got the inner seal out. It's a metric in mm, 14x24x6. No need to pay extra for a Mazda branded part. These are available widely once you know the size. This is the size in my 1990 carbed B2200 but as Cusser already mentioned, yours may be different. Here are two examples of the seal from other makers. I'm going with the Honda one.


EAI VITON on Ebay

I actually like the looks of the VITON one but the Honda was cheaper and shipping will get it here sooner.

The Honda seal is actually for an ATV application

 

Thanks, that's good information. I believe the distributor itself might be made by Mitsubishi.


Actually, I did remove some Steelers stuff that were old decals. Some of those were just magnetic stickers, so I removed those temporarily when I painted the rear part. I was unable to remove the rear "Delta" decal even with heat gun, would've had to scrape off with razor blade, which would've meant body work before painting. I did move those back after the paint dried.

Steelers won't be decent for a few years: big salary cap issues, and Big Ben too immobile. Too many injuries, and time to rebuild.

I will say one thing: no Steelers player ever had a concussion and was cleared to play the following week in postseason. Big-name players like Antonio Brown was out v. Patriots a few years ago. Luck has not been on Steelers side the last decade either: Jesse James touchdown v. Patriots was ruled "not a catch" then a few weeks later exact same situation - TWICE - was ruled a catch !!! Officiating is sooooo hit-and-miss !!!

 

My grandpa was a big Steelers and Pirates fan. He was from Blairsville.

 

Yes, I saw the Mitsubishi icon on the pickup coil

 

The Honda packaged seal came in today. It fits perfectly as far as I can see. The distributor is back together. I’ll put it back in the truck tomorrow hopefully. Here’s the seal packaging for reference.

 

Hope everything works !!!! Let's just say that I was relieved when the truck started up, and more-than-pleased when I discovered that not only was the leak inside the distributor stopped (and I didn't need the aluminum foil cover any longer) but that the oil leakage down the side of the block was gone.

I want to emphasize that replacement of just the external distributor O-ring did NOT stop the leakage on the block, that was also due to the internal seal.

 

Good point. I’ll double check dist to block o-ring. Should be ok since it’s new from the recent engine rebuild kit