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Message started by burrpenick on 01/13/19 at 17:06:18

Title: Looking at a 2006 650cc
Post by burrpenick on 01/13/19 at 17:06:18

6700 miles, saw some very light oil seepage under the head on the shifter side, should or can one re-torque those head bolts or is best to leave them alone?

Title: Re: Looking at a 2006 650cc
Post by justin_o_guy2 on 01/13/19 at 18:00:28

IT'S not the head gasket.
It's misdiagnosed As a head gasket, often, even by dealerships.
The upside is, it's most likely the 5,000 mile valve adjustment was actually done.
Sadly, by someone who couldn't button it up right.
It's not a big deal.

Title: Re: Looking at a 2006 650cc
Post by burrpenick on 01/13/19 at 18:16:40

Thanks, glad to hear that. Are these valve screw adj or shim?

Title: Re: Looking at a 2006 650cc
Post by justin_o_guy2 on 01/13/19 at 21:15:29

Screw,
Bit of a P.I.T.A. getting a leaf from the feeler gauge out and shaped to get in there, but it's not technically difficult at all.

Title: Re: Looking at a 2006 650cc
Post by batman on 01/13/19 at 21:54:41

There are two other places oil might leak nearby, the rubber head plug, or the front and rear head bolts( They are studs,  centered in the head ,near the exhaust header and the carb)and face downward and sometimes weep. All three leaks are easy to fix . we have never seen a blown head gasket on one of these bikes.  

Title: Re: Looking at a 2006 650cc
Post by justin_o_guy2 on 01/13/19 at 21:58:36

Yeah but I figured it's pretty low mileage to start those.
Probably be good to post pictures of the leak.

Title: Re: Looking at a 2006 650cc
Post by kojones on 01/13/19 at 22:21:28


4F4C59404C4319152D0 wrote:
we have never seen a blown head gasket on one of these bikes.  


I have and even posted a photo of it here. Burnt through between the cylinder and oil return galley and consumed a lot of oil. I don’t think a head gasket would fail in a way it’d leak oil to the outside of the cylinder

Title: Re: Looking at a 2006 650cc
Post by batman on 01/13/19 at 22:54:37

I stand corrected!  One blown head gasket ( out of over 8000 owner/ members), but this bike that he's looking at is stock ,6800 miles , If it has a blown head gasket I'll eat it.(I'll mail him a new one -free)

Title: Re: Looking at a 2006 650cc
Post by verslagen1 on 01/14/19 at 07:41:49


2622272223283E4D0 wrote:
[quote author=4F4C59404C4319152D0 link=1547427978/0#4 date=1547445281]we have never seen a blown head gasket on one of these bikes.  


I have and even posted a photo of it here. Burnt through between the cylinder and oil return galley and consumed a lot of oil. I don’t think a head gasket would fail in a way it’d leak oil to the outside of the cylinder[/quote]
could you post it again?  dropbox is forbidden at work.

Title: Re: Looking at a 2006 650cc
Post by kojones on 01/14/19 at 07:55:58


495A4D4C535E585A510E3F0 wrote:
[quote author=2622272223283E4D0 link=1547427978/0#6 date=1547446888][quote author=4F4C59404C4319152D0 link=1547427978/0#4 date=1547445281]we have never seen a blown head gasket on one of these bikes.  


I have and even posted a photo of it here. Burnt through between the cylinder and oil return galley and consumed a lot of oil. I don’t think a head gasket would fail in a way it’d leak oil to the outside of the cylinder[/quote]
could you post it again?  dropbox is forbidden at work.[/quote]

Sorry, seems like I've deleted it and can't find it anywhere. But it's possible, altough mine had a Wiseco piston and a DR650 camshaft, so slightly higher compression ratio.

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