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ed i would love to learn every inch of these bikes.. The next thing i know i will be a certified pro like you!!! LOL ARE YOU READY TO RUMBLEEEEEEEEE?????
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MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it. -
Ed, not a half bad idea.
Chuck might be coming by in the next few days to work on/upgrade his '750's charging system, then we can kill two things at the same time.Comment
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first day i am not working with Scot i will be there.. All my spare parts are up north in my storage unit.. Yes we can install the unit you have but what if the stator is junked??? and yup we will pull that head as well i am curious to learn all i can about the bike and the engine.. will be a cool experience.MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550
NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.
I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.Comment
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Originally posted by rustybronco View PostI finally got back to working on the '80 this evening after "quite a few" non M/C related projects.Originally posted by Nessism View Post
I haven't ripped it down any further than just taking the one exhaust valve out.
all I can say is... PLEASE check your valve clearances!!!!!!!!!!!!!!!!!!
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Holy cow!! That's one nasty valve...
well, at least now you know what the problem was.'85 GS550L - SOLD
'85 GS550E - SOLD
'82 GS650GL - SOLD
'81 GS750L - SOLD
'82 GS850GL - trusty steed
'80 GS1100L - son's project bike
'82 GS1100G - SOLD
'81 GS1100E - Big Red (daily rider)Comment
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Sucks!...
May be a dumb question but any thoughts on what coulda caused this?
Looks like a plain old burnt valve to me.sigpic
82 GS850
78 GS1000
04 HD Fatboy
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Usually from the clearance adjustment being neglected far too long as he said.
The clearance gets too small, the valves can't close, they can't transfer heat away through the seat, they get hotter and hotter, stem expands from the heat and gets longer, valve can't touch the seat at all, pretty soon flames are leaking through and then it looks like this.
Could be a carburetion thing but that's not really very likely.Comment
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A plain old valve held off it's seat because of little or no valve clearance. when it's held off the seat it can't transfer heat to the head. remember metal expands when you heat it and that's the reason you need clearance. if you start with no clearance and the valve is heated by burning exhaust gases, the heat transfers to the stem, the stem lengthens, the valve is lifted off its seat and you see the results.
<edit> sorry Tkent02 I was interrupted while composing this... carry on.Comment
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RRRRuffles have RRRidges
1983 GS 1100E w/ 1230 kit, .340 lift Web Cams, Ape heavy duty valve springs, 83 1100 head with 1.5mm oversized SS intake valves, 1150 crank, Vance and Hines 1150 SuperHub, Star Racing high volume oil pump gears, 36mm carebs Dynojet stage 3 jet kit, Posplayr's SSPB, Progressive rear shocks and fork springs, Dyna 2000, Dynatek green coils and Vance & Hines 4-1 exhaust.
1985 GS1150ES stock with 85 Red E bodywork.
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Well, at least its repairable!Comment
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Wow Dale,Originally posted by Matchless View Post
That bike wins (or looses) the prize for worst maintenance. People that refuse the adjust their valves are just plain idiots.
The next question is whether the seat is salvageable? Hope so. Let me know if you want to borrow my Neway cutters.Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-ResurrectionComment
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Ed, the bike had 34k miles on it and all the shims in it were 2.75 and 2.80's. it's no wonder why the valve burnt. I think the seat will survive but the stem on the valve is pretty dark. didn't notice any galling so hopefully the guide is ok. I'll tear it down and inspect it, then make the decision whether to find a valve or two and rebuild this head, or just go ahead and use the one that's on the spare engine I have. (with new seals and inspection of course)Originally posted by Nessism View PostWow Dale,
That bike wins (or looses) the prize for worst maintenance. People that refuse the adjust their valves are just plain idiots.
The next question is whether the seat is salvageable? Hope so. Let me know if you want to borrow my Neway cutters.
thanks for the offer to use the cutters. I "may" need to take you up on it.Comment
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Am I missing something here, I see the burnt valve and hense no compression on that cylinder, but how did that cause the motor to lock up, when trying to turn it???Comment
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You're missing nothing.
I bought the o-rings for it and ordered valve stem seals from Z1 yesterday. when I go to re-assemble it, I "may" find what could have been the cause of it not rotating fully. I suspect it's chain timing related.Comment
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Ok, gotcha.Comment
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