Worn down camshaft, how to proceed?

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melville
Posts: 1814
Joined: Tue Aug 03, 2010 8:32 am

Re: Worn down camshaft, how to proceed?

Post by melville »

Poor Joper! He came here for help, not drama!
Call me Mel. Some years ago- never mind how long precisely- having little or no money in my purse, and nothing particular to interest me at home, I thought I would ride about a little and see the other parts of the world.
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Ken in Oklahoma
Posts: 3182
Joined: Tue Aug 03, 2010 5:10 pm

Re: Worn down camshaft, how to proceed?

Post by Ken in Oklahoma »

melville wrote:Poor Joper! He came here for help, not drama!
Melville, I've been thinking about your post for a while now. Certainly I am one of the chief "offenders". And worse than that I'm probably not going to sound very contrite. But I am sensitive to the feelings of you and others who are concerned about something that is actually pretty important in the scheme of things. That is, Boxerworks.

I suggest to you that nothing is being taken from Joper. Those who have ideas or suggestions to offer can and do so. There may be exceptions. You may be an exception. A key question arises. Are potential technical contributors turned off by the shenanigans going on here at Boxerworks. Undoubtably, some are. You yourself might be pretty well fed up and ready to leave. (Please don't.) But I believe, and think you might agree, that there some technically able people who are attracted to Boxerworks and the atmosphere that prevails. I think I may be one of them. I think that I, upon occasion, have offered some useful technical ideas.

Case in point: A handful of year ago I frequented a certain Luthier's forum. That forum was run very differently from Boxerworks. Mostly I lurked, soaking up information. I guess, spoiled by Boxerworks, I was unwilling to submit to the rules. And there were rules, hard and fast rules. For example, no off topic discussions. No links to commercial enterprises. Only real names are to be used. And, pointedly, no debate about the rules. The list went on.

That forum, from my perspective, was listless. No life to it. The constraints appeared arbitrary and unrealistic.

I gleaned a lot of information from that forum and I am grateful. But there came a time when I had gleaned most of what I could and, having no interest in the forum and having made no personal connections, I left. Presumably there were people, not like me, who were gratified by the experience--though I did see some of those contributors making remarks about how the forum was run on other lutherie forums.

Anyhow that's where I'm coming from. I have personal connections from Boxerworks and have made some real word friendships. Had Boxerworks been run like the lutherie forum I've been talking about, that wouldn't have happened.

As for Joper, I sure hope he gets resolution to his problem. I wish I had something to offer him advice wise.


Ken
____________________________________
There's no such thing as too many airheads
chasbmw
Posts: 765
Joined: Fri Aug 06, 2010 7:40 am
Location: Bath UK

Re: Worn down camshaft, how to proceed?

Post by chasbmw »

Ken in Oklahoma wrote:
melville wrote:Poor Joper! He came here for help, not drama!
Melville, I've been thinking about your post for a while now. Certainly I am one of the chief "offenders". And worse than that I'm probably not going to sound very contrite. But I am sensitive to the feelings of you and others who are concerned about something that is actually pretty important in the scheme of things. That is, Boxerworks.

I suggest to you that nothing is being taken from Joper. Those who have ideas or suggestions to offer can and do so. There may be exceptions. You may be an exception. A key question arises. Are potential technical contributors turned off by the shenanigans going on here at Boxerworks. Undoubtably, some are. You yourself might be pretty well fed up and ready to leave. (Please don't.) But I believe, and think you might agree, that there some technically able people who are attracted to Boxerworks and the atmosphere that prevails. I think I may be one of them. I think that I, upon occasion, have offered some useful technical ideas.

Case in point: A handful of year ago I frequented a certain Luthier's forum. That forum was run very differently from Boxerworks. Mostly I lurked, soaking up information. I guess, spoiled by Boxerworks, I was unwilling to submit to the rules. And there were rules, hard and fast rules. For example, no off topic discussions. No links to commercial enterprises. Only real names are to be used. And, pointedly, no debate about the rules. The list went on.

That forum, from my perspective, was listless. No life to it. The constraints appeared arbitrary and unrealistic.

I gleaned a lot of information from that forum and I am grateful. But there came a time when I had gleaned most of what I could and, having no interest in the forum and having made no personal connections, I left. Presumably there were people, not like me, who were gratified by the experience--though I did see some of those contributors making remarks about how the forum was run on other lutherie forums.

Anyhow that's where I'm coming from. I have personal connections from Boxerworks and have made some real word friendships. Had Boxerworks been run like the lutherie forum I've been talking about, that wouldn't have happened.

As for Joper, I sure hope he gets resolution to his problem. I wish I had something to offer him advice wise.


Ken
Ken, your Luthier forum sounds a bit like the UK BMW club forum. Accessnorton is a good one, though there are various spats at different times. Iv been on here for ages, survived the ZM V Fun wars, been really sad that some of the good guys left.
Charles
Image
Replica 1070 R90/S (based on 82 RT)
1975 R90/6
Joper
Posts: 22
Joined: Tue Jan 07, 2014 1:23 pm
Location: Sweden

Re: Worn down camshaft, how to proceed?

Post by Joper »

No worries about me! I can choose what to read and not ;) Good with some action here i guess!

I think im gonna change the big end bearings anyhow, they are cheap and im "there" so why not.. Ive cleaned out all oil canals for any old "camshaft bits". Im going to media blast the cylinders and heads and make everything looking like it should again! Im checking what parts i need and waiting to make the big order! Still dont have my manual... so i havent measured everything that needs to be checked but im slowly getting my head around what needs to be done! Still enjoying it ;)
ME 109
Posts: 7306
Joined: Tue Aug 03, 2010 3:00 am
Location: Albury, Australia

Re: Worn down camshaft, how to proceed?

Post by ME 109 »

I don't see how plastiguage can help here as suggested over on ADV.
One measure of the crank with a mic will tell whether the bearings are standard, or oversize to suit a ground crank.

Once results are obtained from plastigauge, one can decide whether to use standard size, or standard size.
There isn't much choice.
Lord of the Bings
Joper
Posts: 22
Joined: Tue Jan 07, 2014 1:23 pm
Location: Sweden

Re: Worn down camshaft, how to proceed?

Post by Joper »

Im still here!

Been busy with some studies, working and wrenching :)

Heres some pictures from the overhaul:

New chain, tensioner, crank sprocket etc.
Image

Glass blasted the cylinder/heads.
Image

Getting there!
Image

Good for your back..
Image

Up and running! Everything seems to be going good :)
Image

One question tho. It is not the fastest revving down, like between shifting gear. Is this normal on these old beemers? Its quite a big flywheel.. i dont seem to be having any leaks between the carbs and such, so nothing like that.

Thanks for all the help here! Helped me alot along the way :)
Last edited by Joper on Tue Mar 18, 2014 12:23 pm, edited 1 time in total.
chasbmw
Posts: 765
Joined: Fri Aug 06, 2010 7:40 am
Location: Bath UK

Re: Worn down camshaft, how to proceed?

Post by chasbmw »

It is a heavy old flywheel, and was fairly standard back in the day to lighten the flywheel. BMW did it from 81 onwards.

A lighter flywheel makes the gear change much quicker, when changing down from 2nd to 1st, give the throttle a little blip and it helps the change go much more smoothly.

Image
Charles
Image
Replica 1070 R90/S (based on 82 RT)
1975 R90/6
Joper
Posts: 22
Joined: Tue Jan 07, 2014 1:23 pm
Location: Sweden

Re: Worn down camshaft, how to proceed?

Post by Joper »

Looks nice! Maby something to do later on.

Image

All ready for a trip to Belgium this summer! :)
pat76r90
Posts: 38
Joined: Wed Jul 10, 2013 6:11 pm

Re: Worn down camshaft, how to proceed?

Post by pat76r90 »

Check the timing advance for sticking open, that gave me some intermittent high idle.
Joper
Posts: 22
Joined: Tue Jan 07, 2014 1:23 pm
Location: Sweden

Re: Worn down camshaft, how to proceed?

Post by Joper »

Im using a silent hektik ignition system so thats not the case! Maby im just unsed with japs bikes? :)
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