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Buell Motorcycle Forum » Old School Buell » Archive through June 24, 2009 » Head gasket « Previous Next »

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Dpg
Posted on Tuesday, June 23, 2009 - 07:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have to replace the front head gasket on my M2. Broken motor mount bolts (don't get me started LOL). I picked up a factory gasket at B. Dron's, but the holes which go over the dowel appear to be smaller than the stock gasket. I know Cometic gaskets do not use the o-ring, but does anyone know if the factory has superseded the old number/design with a new one that doesn't use the o-ring. I can't imagine that o-ring stretches out the tighter dowel hole. If there ws a change is there a different torque spec too?

Safe ride,

Gary in Oaktown
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Purpony
Posted on Tuesday, June 23, 2009 - 10:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

dont even get me started about this. I just went through the same thing on my X1. I got all the parts from harley including the factory head gasket and o-rings. People were telling me that the o-ring goes on the dowel and then the head gasket ontop of that. I was told the o-ring should fit inside the gasket hole... which mine did not. BUT... then i removed my old head gasket it was the same way. Head gasket over the o-ring. I then torqued to spec as the manual says and the new head gasket leaked like crazy! I gave up and ordered the Cometic MLS gaskets. Just finished installing and worked great! I will never go back to stock gaskets again. As suggested, i also did the base gasket at the same time and was pretty simple. Good Luck!
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Firemanjim
Posted on Tuesday, June 23, 2009 - 11:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I found out the hard way that the factory gaskets now need NO-O-Ring. They made a change sometime in the past and I found out because my dyslexia read the instructions as o-rings needed when in reality it read "NO o-rings needed". I saw what I expected to find and had to do job over. Will not make that mistake again!!
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Preybird1
Posted on Tuesday, June 23, 2009 - 11:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Jims the man. I won't use stock HD parts if i can help it. I did this the first time my front head dropped a valve and i re-built it. The re-do is not something to be doing twice, I was just happy it was the front and not the rear.
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Dpg
Posted on Wednesday, June 24, 2009 - 11:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks guys! Giving a counter guy a part number is no guarantee he knows about the part itself. When I did the 1250 kit on my Sportster I used the Cometic kit Nallin included. All should be good now. That is... I'm contemplating the NHRS mount now too. Hard to justify spending a lot of money on a problem that may turn up again!
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Preybird1
Posted on Wednesday, June 24, 2009 - 01:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I traded dan-NRHS a new xb head for a built xl head and he gave me a discount! The mount is very nice and noticeably stronger and is just about the same weight as the stocker
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Dpg
Posted on Wednesday, June 24, 2009 - 02:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Is the NRHS mount the same one sold at American Sport Bike? Any real difference or preference? Same price so I'd place an order with American Sport Bike that includes a couple of items I've been meaning to get from them.

I couldn't get both snapped bolts out of my original head and ended up with a pair of heads off eBay to expedite the repairs. Might have a shop laser out the remaining bolt and then sell the extra pair for use on a Sportster.

Safe ride,

Gary in Oaktown
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Preybird1
Posted on Wednesday, June 24, 2009 - 02:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Al @ American Sport Bike get them fron NRHS. buy them from AL.
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Dpg
Posted on Wednesday, June 24, 2009 - 03:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just placed the order after noticing the American Sport Bike picture was that of the NRHS unit :oP Damn, another piece of billet to polish LOL! CF parts are so much easier

Safe ride,

Gary in Oaktown
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