Re: Newbie Questions Restoring 1957 Johnson 18hp FDE-11

[DAN ANDERSON]

FrankR; I am getting confused & I want to make sure we aren’t confusing Jim? You are advocating using this primer for bolts for Loctite, etc, right? A brush on primer would not be good for crankcase halves? You need the spray for that. Just want to make sure we are clear on that?
The gasket sealing compound outboardnut shows is correct. That is what I use & I buy it in the small bottle. It has a tendency to migrate out the top of the bottle & get real messy. If it gets thick you can rejuvenate it with 90% rubbing alcohol. Just stir it back up good. I use that on gasket or bolts where you want them to be removable (salt water). Can be cleaned up with brake clean. Doesn’t paint well at all! Same as OMC Gasket Sealing Compound or Mercury Perfect Seal.
I use a rubber based adhesive on gearcase spaghetti seal, but that’s just me? I have used 3M 847. What I use is black & more aggressive. It dries quicker, cheaper, & seems to work well. I think it is an appliqué adhesive. Been using it for years. I use the Aviation compound on all the bolt threads & body of the bolts. It prevents corrosion even though I’m not in salt water. We have a lot of lime in our water.

It just seemed we were bouncing around on many subjects (sealers) as happens. It takes a lot of different items to seal up a motor. Put that together with everybody having their favorites & it can get confusing for an admitted "Newbie"!

Another thing the activator does besides speed the setup time (which it does). You never spray the activator on the sealer only on the other side of the block. Sealer only goes on one side. It’s a catalyst action. Might be why some people have problems with it? It’s OK to let the activator dry some before you put the parts together, but be ready with all tools & fastners. You don’t want to waste any time fumbling around looking for something.

The anaerobic sealer should not be allowed to freeze! It makes it grainy. If this happens it can still be used, but now the activator is essential. We had @Loctite/Permatex visit our shop back in the day & explain this to us. We were buying the chalking gun size applicators commercial size containers since we were building so many powerheads. After I learned that fact I kept the sealer in the office at nite instead of the shop. You guys up north might consider that fact even for your small containers? Loctite/Permatex were the same company at that time owed by a parent company. I think it is the same way to this day. We could only get Permatex as Loctite was for commercial grade sales only & we weren’t a big enough company to qualify.

Dan in TN