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-   -   Ironhead Original sealant from HD for case halves (http://xlforum.net/forums/showthread.php?t=2072478)

Maxdog2 17th February 2019 17:50

Original sealant from HD for case halves
 
I just split the cases and am wondering what Harley used originally to seal the case halves. Mine appears to have been sealed with clear silicone and I'm wondering if maybe there have been repairs since new. The rods show a part number 24292-52 which appear to be corect, but the flywheel has a hand written mark that is 1121S 4R. Not sure what this means. The bike is a 1985 and thought maybe this mark may have been a month and date in 1984. Ideas? thanks

ryder rick 17th February 2019 19:13

Clear silicone is not a good sealer.
I tried Hylomar once, never again.

I prefer Yamahabond or ThreeBond 1184.
This stuff is the bomb, great adhesion semi-hardenening oil resistant

Maxdog2 17th February 2019 19:28

Thank, I have Yamahabond on order.

DEEP DIVER 17th February 2019 19:43

I've used clear silicone ok but it has to be the correct grade.

Maxdog2 17th February 2019 20:08

I wonder if the cases were ever cracked open before now. Based on the serial number it is a 1985 XLX and the cases have been painted black.

bustert 17th February 2019 20:33

hd did not use a clear silicone.
you can get it from hd or go to any gm dealer and get the grey they use for the duramax engines part number 88901148

needspeed 17th February 2019 20:46

The 79-85 manual says to use Dow Corning Silastic #732 on the case joint. I've never seen the stuff. Looked it up and it's described as a "multi purpose silicone adhesive/sealant".

Comes in white, black or clear. Maybe that's what you're looking at?

Plus 1 on the yamabond also known as Threebond 1184.

IronMick 17th February 2019 22:42

Quote:

Originally Posted by ryder rick (Post 5729776)
... I prefer Yamahabond or ThreeBond 1184.
This stuff is the bomb, great adhesion semi-hardenening oil resistant

Hondabond is the same as the two mentioned. These have been the most often recommended sealer for case halves on this forum.

ryder rick 17th February 2019 22:53

Quote:

Originally Posted by needspeed (Post 5729800)
The 79-85 manual says to use Dow Corning Silastic #732 on the case joint. I've never seen the stuff. Looked it up and it's described as a "multi purpose silicone adhesive/sealant".

Comes in white, black or clear. Maybe that's what you're looking at?

Plus 1 on the yamabond also known as Threebond 1184.

Embrace modern chemistry.

Do not utilize silicone for this critical seal.
Don't bother looking for the recommended product from the manual.

The Yama Honda Threebond product is worth obtaining.
The only product I will use.

PLUS 100

Scott 17th February 2019 23:15

Does anyone have any suggestions for getting parts apart that have been sealed with Hondabond or Yamabond? The clutch cover on my Can Am was sealed with the stuff, and there must be an easier way to get the parts apart. I used days of cussing and head banging.


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