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Old 04-12-2009, 06:33 AM   #1 (permalink)
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I have a somewhat unusual problem to solve. I have oil leaking from the right side valve cover on my 81 1100i. I know that in itself the is not all that unusual since I just replaced the covers after doing the timing belts.



The problem is that the PO evidently had stripped one of the valve cover bolts, dr5illed and re-tapped the hole and used a standard bolt in place of the regular vale cover bolt.



At first the leak was a rather slow drip. I was told that without the stop built on the regular bolt I was probably over torquing the bolt and causing the leak by warping the cover. I ahve used Indian Head gasket seal and Form-a Gasket along with the new neopreme gasket I installed but it still leaks. And it has gotten much worse.



I would appreciate any suggestions.
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Old 04-12-2009, 07:17 AM   #2 (permalink)
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had same thing with my 82.i done it twice second time i cleaned it with brake clean. put indiam head on it and let it set all day.cleaned head real good.put indian head on it let it set for about 30 minutes then put it together now no leaks.

hopes this helps alan
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Old 04-12-2009, 10:11 AM   #3 (permalink)
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Are you absolutely certain it is the valve cover and not the fuel pump/tach drive? Those can easily look like a Valve cover gasket leak.
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Old 04-12-2009, 10:28 AM   #4 (permalink)
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I agree with Wiskerfish. Check that seal.

The valve cover gaskets hardly ever leak.
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Old 04-12-2009, 02:50 PM   #5 (permalink)
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Pretty sure it is the valve cover.

As I mentioned, the previous owner stripped out the lower right hand bolt.



I have actually seen many people mention problems with aftermarket gaskets leaking. I never really saw a cure listed though.




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Old 04-12-2009, 04:25 PM   #6 (permalink)
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Well then, the first thing I'd do is have the stripped hole heli-coiled so the stock set up can be used. That special bolt& washer are designed to put just the right pressure against the gasket.

Then I'd buy new Honda gaskets and re-assemble using a thin coat of blue RTV just as an extra measure.

That's me...I believe stock parts work better.




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Old 04-13-2009, 07:13 PM   #7 (permalink)
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Well,

The PO of my 1100 had stripped out one of the valve cover bolts (right side) and re-tapped the hole. He inserted a 5/16 bolt but did a shitty job of re-tapping the hole. The larger bolt has now stripped out also. I want to insert a Heli coil to restore the threads but am not sure what size will work.

The original bolt is a 10mm head by 3"but I am thinking that the Heli Coil I need is the either the 8mm or the 6mm.

Does anyone know for sure. I don't want to order the wrong one as they are fairly expensive for the whole kit.
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Old 04-13-2009, 09:47 PM   #8 (permalink)
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Hi again RB,

Go tohttp://www.hdlparts.com/fiche_sectio...&fveh=3439 It calls for a 6X63.2 bolt.

Aren't there any bike shops in your area? They should be able to do that heli-coil for a reasonable price.If you take the engine guard and any other obstructions off yourself, before you go, it should save youexcess labor charges. Just put the valve cover on as best you can and drive the bike in.


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Old 04-19-2009, 02:47 PM   #9 (permalink)
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Hi cured my leak with a new set of washers. good luck with yours
Bo
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Old 08-05-2010, 11:35 PM   #10 (permalink)
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I HAVE THE SAME PROBLEM WITH MY 1100 ON THE LEFT SIDE VALVE COVER NEED HELP HAVE TRIED NEW GASKETS SWITCHING COVERS
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