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GS1150 ES Makeover Project

Do NOT change just the cams!!! You will need to replace all the rocker arms also.
Ray.

my point was to simply replace cams with like for like opposed to replacing with far more expensive aftermarket cams... of course relevant bits need replacing also
 
More pictures now the cams are out:



P1110265a.jpg
Ouch. Ah, the tender ministrations of some PO and his cheap-ass maintenance regime.
 
Journal Bearings and Cam Followers

Journal Bearings and Cam Followers

Here are some pics of the journal bearings and cam followers

This journal:

P1110270.jpg


came from these bearing holders which look OK:

P1110278.jpg


P1110293.jpg


And this journal:

P1110269.jpg


came from here:

P1110274.jpg


P1110286.jpg


And these are the cam followers:

P1110279.jpg


P1110289.jpg


P1110280.jpg


How do you fix goosed journal bearings and cam followers?

Greetings
 
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Unless you are a machinist you don't... Do you have a good machine shop around you? If I were you I would take the head to the shop for them to evaluate.

You could look around on ebay... but being in the UK not sure how available those kind of parts are...
 
Well it looks like the cam journal bearing holders on the far left and right (middle pairs look OK) of the head are pretty scored up. Not sure what you can do about that as they are integral to the head. I'm thinking of taking the head off now (I also snapped a cam journal bearing top cover bolt) to see if anything can be done with it.

I don't want to spend money on this bike. I need all the funds to go into the GS1100G Resto.

So - what to do?

Greetings
 
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Before you took it apart did you do a compression test?

You don't want to put money into an engine that has bigger issues...
 
Some of the Hondas that had cam oil feed issues were reclaimed but it was only because they were still fairly new bikes and worth a few quid still. The work involved building up the cam journals and grinding to size again, and machining a recess in the head and caps to take a shell bearing. Costly work and is it worth it to pay a machine shop? If you had your own kit to do it cheaply, and if it were a rare engine, it's not a scrap head.
 
Can't view youtube where I'm at right now but if it ran that is good.

The bad thing is it isn't always a good indicator if an engine is worth investing in a major repair....a worn out Japanese 4 motorcycle engine will run seemingly well even with low compression. It isn't until you get on the road and give it the beans when you discover an anemic, tired engine.

64k miles isn't a gigantic amount unless it was mostly slow city miles. But the wear on the cam makes me wonder what the condition of the bottom end is.
 
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Depends - the GTR 1000 was notorious at one time for blocked oil feeds to the cams. A friend had one go that way, and after he turned his considerable expertise to it, the repaired engine did another 100K. That was a known fault though, and I've heard nothing similar about these GS1150 lumps, so if the wear pictured is due to razzing it in hot conditions with cheap oil, the whole thing might be knackered.
 
BiomedDR - that's my worry. I think I need to pass this project onto someone with deeper pockets and more engineering skills.

Greetings
 
Grimly - this bike came from the hot part of the US and the PO stuck this massive oil cooler on it:

P1100061.jpg


which is twice as big as standard. You might be forgiven for thinking there were temperature problems and indeed I do wonder what the bottom end might be like. There were some rumbles which can be heard here at around 2:24 - it doesn't sound too good:

https://www.youtube.com/watch?v=1SRL4Hvd2Ig
 
I had a set of brand new Webcams that developed similar damage after extended stator testing. I was doing the Series v.s. Shunt R/R comparison. Beyond the lobe dame there was cam bearing damage to the saddles. I used some 800 grit emery cloth and carefully worked the saddles. Was the paper so you don't get abrasive everywhere and wipe it out good after. The low spots will help oiling and not a concern.

Buying old cams is a crap shoot. But having old followers and a fresh cam is not good either. You need good to excellent condition followers and a new cam. Get adjustable sprockets and degree the cam in.

You will be happy when done.
 
You could give a company called Cylinder Head Engineering in Fareham a ring. They do / did this sort of stuff but I haven't been down there for a few years now so don't know if they're still going. They used to have a website but that's now gone (which makes me think they may not still be there) but if you google the name the company details still pop up.
 
that oil cooler is about as useful as pockets in underwear
coolers reply on air flowing through them, the fins on that one have been flatted most likely by a high preasure washer


ozman
 
You've got LCP right across the road from you, right next to the merc garage, take it in there and see what they say.
 
That clanking at 2:24 sounds more like normal clankshaft clanking when the carbs aren't dialled in right. Honestly, a bag of spanners sounds more melodious than any roller-bearing crank if it's out of tune.
From what I see, it's been a long time since the centre stand was on that (did it ever have one?) and it's quite possible that's a contributory factor - revving it up on the sidestand, at drunken off-base parties out in the boonies. Who knows what's been done to it...
 
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that oil cooler is about as useful as pockets in underwear
coolers reply on air flowing through them, the fins on that one have been flatted most likely by a high preasure washer


ozman

Sound like a good excuse to sit with a couple of bottles of beer and a flat head screwdriver; straighten them out. Or Not, but the beer is still good idea.
 
Sound like a good excuse to sit with a couple of bottles of beer and a flat head screwdriver; straighten them out. Or Not, but the beer is still good idea.


Looks like there is some white glue or caulking in there as well. Beer is good but in this case, a whiskey might be called for.:rolleyes:

cg
 
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