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Re bore

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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2020 at 16:27
https://www.lcandm.co.uk/crankshaft-refurbishment/
As Richard said.
Hard chroming or plasma spraying could be the answer if replacement isn't straight forward.
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2020 at 17:44
I've been trying to get in contact with the guy selling the crank on e. bay from Germany. I've heard nothing back, I'm presuming lockdown.
Thanks for the suggestions of having mine built up, I've been in touch with SED at Kegworth and they will do it for me (phew).
Thanks for all the help and I'll keep you updated,
Paul.
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2020 at 17:52
That's good news. What is the condition of the main bearings, are they still good?
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Richard Hyatt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Richard Hyatt Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2020 at 18:31
At least retaining your own crank , building it up and bringing back to std shell brings a whole new lease of life to it and of course originality.
Glad you have a solution now
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2020 at 19:05
Mains are still good. I'm having it plasma sprayed, as mentioned, at least it keeps it original. Posted it off to SEP at Kegworth, quoted £150 which I thought was reasonable.
Cheers,
Paul.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Richard Hyatt Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2020 at 19:45
Glad sorted , start from new again
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2020 at 19:46
Great stuff!
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jul 2020 at 22:19


So, I got the crank back - it looks good, however, there was a bit of a communication issue and mains were done as well as the big end! More seals ordered and another three week wait!.... then realised the UJs are knackered too, £220!!. Found Propshaft parts on Ebay £64 the pair, result!

Anybody know where to get any tab washers for the conrods?

Thanks,
Paul.
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jul 2020 at 22:44
I think I got mine from Gutsibits along with B/E bolts and nuts.
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 15 Sep 2020 at 19:29
Got the bike finished at last, seems good at the moment, done about 300 miles with plenty of oil changes (again).
to try my patience today, its covered my rear wheel with oil I think its gearbox, but I cant figure where its come from.
all suggestions and guesses most welcome.
Thanks Paul.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 15 Sep 2020 at 22:09
Have you tried smelling the oil? Gearbox oil smells different to engine oil. Have you checked the gearbox breather and the actual oil level in the gearbox? Has it been over filled? Then of course there is the large seal on the bevel box. Lots of places to choose from.
Best of luck.

I presume you did fit a hose to the gearbox breather. I'm sure I read something about Guzzi not doing so at first then deciding that it would be a good idea.

Edited by Dave P. - 15 Sep 2020 at 22:33
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote c13pep Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 2020 at 10:35
The simple rule I follow is that if the oil on the tyre is like a `sunburst` then its at the backend ie. bevel box, brake caliper etc. if it`s covering the tyre then engine and gearbox are culprits. I can empathise with the phrase `trying my patience` but that sums up owning an older Guzzi as I to am trying to locate a very small weep on my MonzaOuch 

CHRIS
you can`t have any fun in a straight line

Monza

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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 16 Sep 2020 at 19:23
Thanks for the replies
Interesting about the sunburst oil fallout. That's what it looks like.
It seems to be leaking from the shaft to bevel joint, but its never leaked from there before, and that oil has been in there for about 1000 miles.
I'm going to have a proper look Friday.
Thanks again,
Paul.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PMVERN Quote  Post ReplyReply Direct Link To This Post Posted: 27 Sep 2020 at 18:54



Bag full of tools on the back
Just done another 500 miles, bevel has leaked a bit again, but not as much as before, no breather on these early ones, but I'm thinking of fitting one.
Now she's up and running, I'm going to change the very old rubber to some TT 100s, nice and classic looking. Also a change of fork oil.
I would like to have the original shocks rebuilt to keep the originality.
I've done a compression check, all good, but I find the engine braking poor, is this normal?
cheers,
Paul.
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Dave P. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dave P. Quote  Post ReplyReply Direct Link To This Post Posted: 27 Sep 2020 at 22:19
I've done a compression check, all good, but I find the engine braking poor, is this normal?   


I think that's probably down to one of motorcycling's heaviest flywheels.
TO LIVE OUTSIDE THE LAW YOU MUST BE HONEST.

1971 V7 Special. 1972 850GT.
1970 T120 Bonnie. 2009 500 Bullet.
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