Author Topic: Case Sealants  (Read 3210 times)

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Offline BS Mechanic

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Case Sealants
« on: May 16, 2011, 09:00:02 PM »
What color was the original sealant used between the upper and lower crankcase halves?  My memory, and bits of remaining sealant says it was silver colored.

Today, what's the best choice for sealing the crankcase halves?  Can you still get "Pliobond", and if so, where?

Offline reed

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Re: Case Sealants
« Reply #1 on: May 16, 2011, 10:21:28 PM »
Bob
I use Yamabond 4 gasket sealant on all my engine rebuild ideal for crankcases  with out any gaskets.
And its in sliver the cost about 17.95 per tube from your Yamaha dealer.
Thanks.
Steve.

Offline Toystoretom

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Re: Case Sealants
« Reply #2 on: May 16, 2011, 11:59:06 PM »
Nissan uses some stuff called "Three Bond" which curiously is exactly the same as Yamabond 4. It is some good stuff, easy to work with and is almost indestructible. I'll bet they are made by the same company. Try to stay away from the Harry Homeowner silicone adhesive, I've seen that fail under heat, pressure and oil. Yamabond won't.
I have a tilt wheel for more headroom!

Online Mike Anderson

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Re: Case Sealants
« Reply #3 on: May 17, 2011, 05:49:35 AM »
Hi BS Mechanic,

I get pliobond at my local hardware store. Sometimes you have to ask them to order it.
Later Mike

Online OldSwartout

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Re: Case Sealants
« Reply #4 on: May 18, 2011, 09:43:25 AM »
Hi BS Mechanic,

I get pliobond at my local hardware store. Sometimes you have to ask them to order it.
Later Mike


I've seen Pliobond regularly in ACE Hardware stores. It is good stuff. The original sealer was silver IIRC, and we generally used Yamabond for everything in the old days.  My basket case 350 went back back together with red RTV in 1974 (noticed a couple days ago when I was checking the timing that there is still a bit of red RTV peeking out between the crankcases 39 years & 40,000 miles later).
Karl Swartout
Mooresville, IN
BS175 Roadracer
BS350 GTR

Offline reed

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Re: Case Sealants
« Reply #5 on: May 27, 2011, 10:23:25 PM »
On the case sealants try Threebond 1194 similar to Yama bond 4.
Or Threebond engine silicone 1211.
You can get it at most motorcycle shops etc.
Thanks.
Steve.

Offline BS Mechanic

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Re: Case Sealants
« Reply #6 on: May 27, 2011, 10:48:14 PM »
Thanks guys, lots of good input here.  I think I'll go with Yamabond this time, I've always used Pliobond in the past, always with good results, but it leaves a tell tale brown color, and I'm trying for as close to original as I can get.  Probably carrying the pursuit of original to an irrational extreme, but that's the direction I'm headed!  ;D

Offline motzingg

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Re: Case Sealants
« Reply #7 on: January 19, 2012, 03:07:58 PM »
Permatex sells it as 'moto seal' and its significantly cheaper without paying for the yamaha name. around $8 at the auto parts store.

 


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