Tusk Gaskets, garbage? - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 8 Old 03-10-2018, 11:10 PM Thread Starter
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Tusk Gaskets, garbage?

I recently did a valve job and installed a tusk cover gasket. Upon receiving it, I noticed it looked less robust than the one previously installed in terms of its dimensions, and I also found a nice sized nic out of the gasket itself. It looked like its from the manufacturing process where I'd assume they have multiple gaskets attached in a mold. anyways they didn't do a good job cutting them apart and instead took a chunk out of the gasket. it looked like the nic might nit leak, so I installed the gasket anyways.

I dont think the nic is causing the leak, but man its really pretty bad, I will likely never purchase a Tusk gasket. Anyone else have similar or different experiences ?
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post #2 of 8 Old 03-10-2018, 11:29 PM
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Prefer OEM but never had a problem with the Tusk gaskets. Have used them several times on both sides.

These were alternator and clutch cover gaskets.

The OEM valve cover gasket is really not a consumable. They last forever.

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Last edited by Tom Schmitz; 03-10-2018 at 11:32 PM.
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post #3 of 8 Old 03-10-2018, 11:48 PM Thread Starter
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Originally Posted by Tom Schmitz View Post
Prefer OEM but never had a problem with the Tusk gaskets. Have used them several times on both sides.

These were alternator and clutch cover gaskets.

The OEM valve cover gasket is really not a consumable. They last forever.
I see, I guess it did look pretty good when I took it off, but since it had small leak I thought a new one would be better. I'm also biased, since I used to be an airplane mechanic, always get new packings! Oh well, looks like I get to pull the cover again. Probably not soon. Also the bike runs waaaay better with the re-shim!
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post #4 of 8 Old 04-01-2018, 06:40 PM Thread Starter
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Thought i'd follow up. I ordered and installed an OEM gasket. Oil leak is gone, it was leaking really bad. And, call me crazy, I think I even gained back some engine compression.

steer clear of tusk valve cover gaskets!
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post #5 of 8 Old 04-01-2018, 07:55 PM
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I used many Tusk Gaskets including the Valve Cover Gasket/Seal. No issues at all. The Tusk Gaskets aren't as pretty as the Kawasaki OEM Gaskets are; but there is a huge price difference.

FWIW, on Gaskets, I use a product called Hylomar Sealant. A product I came to know and respect from my auto racing days. Fantastic stuff actually. Used by Rolls-Royce. Gaskets essentially become good for the lifetime of the component; even when reused several (as in many, many) times.
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post #6 of 8 Old 04-01-2018, 08:29 PM Thread Starter
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I used many Tusk Gaskets including the Valve Cover Gasket/Seal. No issues at all. The Tusk Gaskets aren't as pretty as the Kawasaki OEM Gaskets are; but there is a huge price difference.

FWIW, on Gaskets, I use a product called Hylomar Sealant. A product I came to know and respect from my auto racing days. Fantastic stuff actually. Used by Rolls-Royce. Gaskets essentially become good for the lifetime of the component; even when reused several (as in many, many) times.
I agree there is a huge price difference, that's why I tried the Tusk. I mostly made this post to see if my experience was typical. I was on the fence about using a sealant; it didn't appear to be necessary from what I read about the valve cover, so I did not. I guess however, maybe the Tusk gasket would have held if I did apply some sealer. Ultimately, I tried them out and feel like I've wasted time and money on them.
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post #7 of 8 Old 04-02-2018, 01:56 AM
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Originally Posted by dopfreerain View Post
Ultimately, I tried them out and feel like I've wasted time and money on them.
If I'd had the experience that you did, I'm certain that my decision would have mirrored yours.
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post #8 of 8 Old 04-02-2018, 12:09 PM
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The whole point of the OEM's use of a thick rubber valve cover gasket was to make it re-useable.
The only points which might have required use of a sealant should/could have been at the 'eye-balls' on the cam chain tunnel on the LH side. FWIW, I quit using sealant on that Genuine Kawasaki gasket in that area in about 1990!

But the Suzuki DRZ400/Kawasaki KLX400 or RMZ250F/KX250F valve cover gasket will leak everytime at the 'eyeballs' if sealant is not used in the area.

As to almost any of the paper based engine cover gaskets, proper preparation of both surfaces is usually the most important. CLEAN, Smooth, Degreased & Dry will usually allow the resin which is usually impregnated into the paper base materials to adhere to the surfaces.
The use of oils or greases to allow re-use of these gaskets May allow the gasket to slip out of joint surfaces & leak. Especially near pressurized areas like the oil passage to the external oil pipe & the oil filter itself, which can have up to 85 psi of cold oil pressure. (How many ever use a steel straight edge or surface plate to confirm an engine cover is Not Warped?)

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