Bad Mating Surface? - Honda Motorcycles - FireBlades.org
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post #1 of 14 Old 08-29-2005, 12:03 AM Thread Starter
 
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Bad Mating Surface?

So I had to have the lower crank case welded because it chipped off when I dropped the bike on the left side and the area near the weld appears to be leaking ever so slightly.

Honda uses a paper gasket and since I'll be replacing the stator cover AGAIN (it cracked again on a REALLY light drop) is there any way I can use a different gasket material that may help seal this area better? What about a liquid gasket?

Also, Whats the best way to clean off the old gasket? I don't want to dammage the surface.... I have seen 2" discs for die grinders made with little rubber knobbies for cleaning gaskets but is there any easier way? I don't have access to a die grinder.

Adam
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post #2 of 14 Old 08-29-2005, 12:07 AM
 
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Re: Bad Mating Surface?

Razor blade is what I normally use. Just be careful.

You could try a non-hardening gasket maker/sealer. Yamabond is the old standby but now Permatex has some similar stuff available at your local parts store, "Motoseal".

http://www.permatex.com/motorcycle/P...&item_no=29132



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post #3 of 14 Old 08-29-2005, 12:22 AM
 
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Re: Bad Mating Surface?

I think 40-60 grit sandpaper would be a bad "mating" surface.
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post #4 of 14 Old 08-29-2005, 12:32 AM Thread Starter
 
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Re: Bad Mating Surface?

lol I though rug burn was bad!

We sell that motoseal stuff at my shop, I'll have to grab some. Can you goop it on?

Adam
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post #5 of 14 Old 08-29-2005, 12:47 AM
 
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Re: Bad Mating Surface?

Don't get too crazy with it, but it's pretty inert stuff.



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post #6 of 14 Old 08-29-2005, 12:47 AM
 
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Re: Bad Mating Surface?

First off, get the mating surfaces as level as you can. Sure a slow drop can crack it, but its even more likely if the repair is high, and the cover is deflected and put under tension whenyou tighten down the bolts. I would rather the mating surfaces be .020" low that .010" high. Like LTL said, use whats called a semi-drying sealer. Yamabond is good, as is Three Bond 1104. It is all that is used for sealing cases on 2 strokes and the like. Clean all surfaces with laquor thinner before sealing.
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post #7 of 14 Old 08-29-2005, 11:13 AM
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Re: Bad Mating Surface?

I've heard that the gasket for the stator is not only there for a seal, but also spacing. If you decide to use a gasket maker of some sort, I'd definately use the gasket as well to maintain spacing. Maybe goup it with the gasket maker?
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post #8 of 14 Old 08-30-2005, 1:21 AM
 
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Re: Bad Mating Surface?

Honda used a small dab of sealent when the put the cover on at the factory, but only at the two spots where the cases meet. Put as little as you can on it and still have it squeeze a tiny bit out. Any more than that, and the excess is squeezing inside as well. I would run a small bead, the size of a string of spegettii, on both sides and bolt it up with the gasket.
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post #9 of 14 Old 08-30-2005, 7:58 AM
 
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Re: Bad Mating Surface?

honda makes a great product called hondabond. You can get it at any honda auto/motorcycle or acura dealer. Stuff works like a champ
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post #10 of 14 Old 08-31-2005, 3:15 PM
 
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Re: Bad Mating Surface?

I am going through the same repair, I had a very light leak at the bottom of the cover, I pulled it and applied HondaBond to the gasket with a putty knife (which I also used to scrape off the old gasket, followed by a light scrubbing with steel wool)

Fixed the leak, but I was lazy and just tightened up the bolts around the cover by feel, I'll be doing the repair again, this time replacing the cover, as I cracked it when tightening the bolts. Must've been slightly over the 12Nm - 9ft/lb torque spec So, be careful.

Live and learn..
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post #11 of 14 Old 08-31-2005, 3:21 PM Thread Starter
 
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Re: Bad Mating Surface?

Rodan, if you're spending the money on a new cover BUY AFTERMARKET! They're WAY more durable and the last thing you need is to crack the engine case like I've done. Turns a nightmare of a minor drop into a HELL or a engine swap (worse case scenerio).

www.circuit1.com OR Factory Pro OR Billet Tech


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post #12 of 14 Old 08-31-2005, 6:30 PM
 
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Re: Bad Mating Surface?

Atr911:

Thanks for the link. I am gonna take your advice and order, I think, the Circuit 1 cover.
I have to call them tomorrow (web guy gone today and their page isn't accepting my CCard) So, in the meantime, anyone have one of these and can vouch for it?

It's gotta beat the hell out of the flimsy Honda Cover (although at over three times the price) and looks like you'd be able to ride away after a low speed crash on that side, which is near impossible with the stocker (hope I never have to test it)

Thanks again.
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post #13 of 14 Old 08-31-2005, 6:31 PM
 
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Re: Bad Mating Surface?

I tried on a trampoline once but it was really hard to get a proper rhythm going.

And then there's this asshole...
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post #14 of 14 Old 09-02-2005, 3:56 PM
 
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Circuit 1 : 954 Alternator Cover

Received the cover today and installed it.

Posted some pics of the cover and install - Here:

https://www.fireblades.org/gallery/br...00&userid=5880
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