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Threebond case sealant experiment..

I just sealed my 3.6 case halfs and as part of that experimented a bit with the Threebond products. As a result I used Threebond 1104 for the case perimeter and Locktite 574 on the inside webs. I use a bit of Curitil on the #8, deciding not to go as radical as I some others have done...maybe I was just chicken..

First of all I coated one side of a small piece of sheet metal with Threebond 1104 and waited for it to dry. That is the wierd part ; it dries really quick and really does not seal until its put under pressure against another surface so don't worry it it looks like it set-up.

Sorry for the lousy shot but here I am clamping two pieces of sheet metal with the Threebond between the pieces.



After 1/2 hour I took it out of the vice and seperate the pieces...you can see the nice bonding to both sides.



Here is what it looks like on the case halfs. Yes it looks sloppy, it was all cleaned up before I joined the cases. I used a small plastic spreader that allow me to spread it on really thin (translucent) or thicker and does not leave any hairs or marks...I went for thin but even.



Here is the edge of my case after clamping...I looks like I did the thickness just right (I won't realy find out until I put the oil in...) ;-)



Its seems to be good stuff and its was easy to use. Cheap too...

Cheers,

Mike
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Old 02-19-2006, 11:27 PM
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Looking good Mike!

Cheers
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Old 02-19-2006, 11:42 PM
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Mike,

3 Bond 1104 has been used for years & years with good results. Every 962 motor out of Andial in the GTP days used it as the case sealant.

Looking good!

Ralph
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Old 02-20-2006, 07:28 AM
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Ralph what did you end up using, my memory is escaping me.....

Cheers
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Old 02-20-2006, 08:22 AM
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i used threebond 1104 on my case perimeter-easy to use and got a nice bit of squeezeout
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1980 SC soon to be big hp 3.3t powered 73RSR Replica (well, I'm keeping the engine but everything else is going )
Old 02-20-2006, 09:56 AM
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Quote:
Originally posted by catca
Ralph what did you end up using, my memory is escaping me.....

Cheers
1104 for both the case sealant as well as the head/cam tower assembly. 12K on the motor and still dry.

Ralph
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Old 02-20-2006, 10:27 AM
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Did you put it on the same way Mike's pictures show?

Cheers
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Old 02-20-2006, 10:54 AM
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Is that Torco MPZ Engine Assembly Lube on those bearings??Nice
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Old 02-20-2006, 11:01 AM
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Quote:
Originally posted by catca
Did you put it on the same way Mike's pictures show?

Cheers
Yes, used an acid brush and applied it only on the areas where the case actually sealed, just like it appears Mike did.

Ralph
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Old 02-20-2006, 11:04 AM
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I put mine on with my finger and a spreader to move it around
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1980 SC soon to be big hp 3.3t powered 73RSR Replica (well, I'm keeping the engine but everything else is going )
Old 02-20-2006, 11:46 AM
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I used 3Bond for the last 2 motors I did. I was afraid to put it on that thick so I put it on thinner than that. I used my gloved finger to roll/dab it on. Kinda like covering the flange in Threebond "fingerprints".
I guess I don't need worry so much next time. Thanks Ralph!
-Chris
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Last edited by ChrisBennet; 02-20-2006 at 03:52 PM..
Old 02-20-2006, 03:44 PM
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Quote:
Originally posted by cgarr
Is that Torco MPZ Engine Assembly Lube on those bearings??Nice
You bet...recognize the color? This stuff is really sticky though....you can feel it in the bearings...

BTW I did not spread the 3Bond with a brush but a little plastic paddle ; it looks like a little oar off a boat. It works great because you can control the thickness by adjusting the angle of the paddle. I don't like to use a brush because the 3Bond is so sticky it just will pull the hairs out of the brush.

Here is another shot of the paddles I use. I put a light coat of Curitil on the #8 just in case although I am using the Viton O rings which I think are a tiny bit thicker than the stock ones...I did not have the guts to take the Tightbond approach and totaly cover the O ring.



Cheers,

Mike
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Old 02-20-2006, 04:52 PM
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So, Mike is an engineer who uses the plastic craft sticks to apply adhesive...just like me.
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Old 02-21-2006, 06:17 AM
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where does one obtain threebond? Have not come across it on this side of the pond
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Old 02-21-2006, 09:36 AM
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I had the same problem. you can buy it from henry


www.supertecperformance.com
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Old 02-21-2006, 12:14 PM
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Quote:
Originally posted by Peterfrans
where does one obtain threebond? Have not come across it on this side of the pond
I got mine at my local Honda store...try motorcycle shops etc.

Cheers,

Mike
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Old 02-21-2006, 05:09 PM
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Quote:
Originally posted by PBH
So, Mike is an engineer who uses the plastic craft sticks to apply adhesive...just like me.
I like using the pink ones.....
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Old 02-21-2006, 05:10 PM
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3 Bond 1104 was also known as "Yamabond" back in the day. "Yama" refers to Yamaha, which like Mike mentioned should also be available at motorcycle shops as well as discerning Porsche engine builders.
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Old 02-21-2006, 08:16 PM
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I'm planning on using the ThreeBond 1104 to seal my engine as well. I purchased mine from Henry at Supertec.

Not trying to open a debate here, but I'm not planning to apply any sealant to the bearing webs. After speaking to my machinist, Neil Harvey, it's just not needed and I'm fearful that 574 in this area could create more problems then it it will solve. Again, I know it's perfectly fine to use sealant on the bearing webs...I'm just opting not to. However, I do plan to apply a VERY thin coat of 574 to many of the gaskets.

As for the nose bearing, I have ThreeBond 1211 and Curil-T, and just haven't decided on my plan for treating this area. Any advice would be greatly appreciated.

Thanks,
Jeff
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Old 02-22-2006, 08:35 AM
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I used the 1211 on my #8 not too much but it seamed to work or at least look good, will know for sure this spring when I fire it up..
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Old 02-22-2006, 08:44 AM
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