bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 15, 2007 23:21:50 GMT
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Long story but my younger brother has always like his cars but has resorted to dealer servicing and repair when it comes to the rotating bits Year before last his clutch went on his daily MGB GT and he was quoted £600 to replace He rang me up to ask if this was reasonable and I said hell yeah it's an engine out job - couple of hours to haul it out 35 mins to replace the clutch couple of hours to drop it back in and plumb it all up allow an hour for problems 6 hrs labour and £100 for parts - seems fair Big mistake So we could do it then he says  curse word any way I dragged me engine crane over to his in the monza plus all the tools I could think we would need We hauled it out between midday and 4pm one saturday We had the new clutch fitted and the block cleaned and painted plus fixed a few leaking gaskets by 6pm We went down the pub Had a few beers Came home and crashed out Started early Sundayand had it back in and running by midday job done Anyway it's gone again!!!! Oooops Having seen it all done I'm a bit proud of the younger sibling cos between the last time we did it and now he's bought an engine crane and a few more tools and these are the pictures he's just sent me Engine coming out  Clutch pressure plate  Clutch release bearing  Oh dash -that was a great big meaty carbon insert in that last time I saw it........ Anyone any clues as to why a carbon release bearing should dissappear in such a short space of time Anyway still proud of my younger bro's bravery in tackling the job and then sending me the photos to ask advice  |
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,542
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Jan 15, 2007 23:27:05 GMT
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Top marks to your Bro.  Could there have been residual pressure in the clutch hydraulics meaning it was constantly dragging? Where was it biting when you first got it alll back together? Maybe just dodgy parts?  |
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Follow your dreams or you might as well be a vegetable. |
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 15, 2007 23:41:18 GMT
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Top marks to your Bro. I know - I'm mega impressed that he's even tackled it before calling me Could there have been residual pressure in the clutch hydraulics meaning it was constantly dragging? Where was it biting when you first got it alll back together? It's a while back now but it all seemed fine needed a fair bit of pedal travel to be able to select a gear but no slippage when in gear and compared to how it was before it had a nice clutch action with a sweet change Maybe just dodgy parts? I'm in the doggy parts view but I have absolutely no experience of carbon release bearings!!! I would have expected it to last a fair few years but to me from the pictures it looks like it's broken up and gone west!!! |
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 15, 2007 23:42:06 GMT
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I am however laughing about the engine angle as it was removed FWD MG FTW
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Jan 15, 2007 23:42:19 GMT
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I think I would go with either of Seth`s suggestions either constant pressure of the bearing on the pressure plate or faulty parts.
don't know much about MG`s though, as you can probably tell from my next question.
Why engine out and not gearbox out? Is there something about the gearbox/prop/ etc. that makes it impossible/difficult to do it that way
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 15, 2007 23:45:08 GMT
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I think I would go with either of Seth`s suggestions either constant pressure of the bearing on the pressure plate or faulty parts. Hmmm - hard to tell on constant pressure as it's not my car and I never drive it (except for a brie test after we put it back together last time and then it seemed fine) don't know much about MG`s though, as you can probably tell from my next question. Why engine out and not gearbox out? Is there something about the gearbox/prop/ etc. that makes it impossible/difficult to do it that way Something to do with the way the bodyshell is constructed to get the gearbox out its an engine out with the box!!! |
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Jan 15, 2007 23:45:42 GMT
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Isn't there some kind of bearing conversion for those. I remember my A35's and A40's having those solid carbon release bearings and even at the time I though it was a sh!te idea!
If there's no off the shelf conversion then it might be time for someone to get down the bearing specialist and find something to do the job!
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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Jan 15, 2007 23:47:21 GMT
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I was sat here thinking exactly the same why not take the box out!
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Last Edit: Jan 15, 2007 23:47:54 GMT by avtovaz
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Jan 15, 2007 23:58:10 GMT
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On MGB's the gearbox sits in an enclosed tunnel like a Midget I think.
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1962 Datsun Bluebird Estate - 1971 Datsun 510 SSS - 1976 Datsun 710 SSS - 1981 Dodge van - 1985 Nissan Cherry Europe GTi - 1988 Nissan Prairie - 1990 Hyundai Pony Pickup - 1992 Mazda MX5
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madmart
Part of things
love is: valvebounce in top gear
Posts: 559
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IMO its probbly a faulty bearing ive seen a conversion some where just cant remember at the mo, the only other thing that kills release bearings is bad habits like holding the clutch down for long periods
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Nathan
Club Retro Rides Member
Posts: 5,650
Club RR Member Number: 1
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Any MGB related XpertsNathan
@bgtmidget7476
Club Retro Rides Member 1
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Jan 16, 2007 11:52:22 GMT
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Not an enclosed tunnel as such its the cross member that holds the box up. I took my engine out without the box, but is a complete  to get it lined up again. So the next time I did the same job I took both out at the same time. Its a poor quality release bearing, I have had the same happen, from what I know a massive amount were shipped out and not recalled. Bascially it was air in the ring makes it degrade rapidly, so I was told. |
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Jan 16, 2007 12:19:09 GMT
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Well done Bro! Has he brought any axle stands yet?
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ImpManiac
Part of things
Imps... Imps... Imps...
Posts: 868
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Jan 16, 2007 13:23:27 GMT
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Isn't there some kind of bearing conversion for those. I remember my A35's and A40's having those solid carbon release bearings and even at the time I though it was a sh!te idea! If there's no off the shelf conversion then it might be time for someone to get down the bearing specialist and find something to do the job! My Chamois has a roller release bearing for the clutch - a conversion from a carbon bush. Impspeed supplied it. Google for them. Works fine, even though it is not an axial system like modern cars have. Maybe the clutch supplied for your brother's MG had the wrong pressure plate. It sounds like the pressure plate sat just a tad too high from the flywheel and was therefore in constant contact with the carbon bush in the release bearing. Or maybe the carbon bush fell out somewhere...? "I'm" |
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Last Edit: Jan 16, 2007 14:05:17 GMT by ImpManiac
1966 Singer Chamois sprint/hillclimb car in white over blue two tone
1975 Triumph Stag long term project (over 20 years so far) in colour TBA
2003 Vauxhall Vectra GSi 3.2 in black sapphire
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 16, 2007 15:56:50 GMT
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Right chaps I fed back your suggestions and comments his reply "Thanks bro, Hate to admit it but I did (don't now) tend to sit with my foot resting on the clutch pedal due to lack of space in the footwell" Ahhhhh well best we find him a roller bearing conversion just in case ;D He also asked if there were any downsides to roller V carbon inserts as he found this little snippet on t'web See below from www.mgb-stuff.org.uk/clutchframe.htm"I fitted a roller release bearing when I changed my roadster clutch several years and several thousand miles ago as it seemed a good idea at the time. Then I started reading about premature failure because the bearing is constantly spinning, unless a pull-off spring kit is fitted at the same time. Spoke to my supplier who said they had never heard of such a problem (well, they would say that, wouldn't they?). In fact the slave cylinder contains a spring that is continually pushing on the clutch arm to take up any mechanical play that may develop between clutch operations and so is pressing the release bearing against the cover plate. Presumably the pull-off spring is designed to be stronger than this, which will introduce a little play, and so also has a stop to control just how much play there is. As time went by I realised how foolish I had been. Did I seriously think that I would leave an old bearing, roller or not, in the clutch the next time I changed it? Of course not. Do carbon throw-out bearings regularly and repeatedly fail before the clutch needs changing anyway? Not if you don't ride the clutch, they don't. Fast forward a couple of years, and I now have a wittering that sounds just like a dry bearing as the clutch pedal takes up the free play. Doesn't do it when the clutch is fully up or in the process of dis-engaging. Would I fit another one? Would I 'eckerslike (i.e. NO!)." My reply was "I've got one in the Monza that is 22 years old - It does witter occasionally but who gives a rats when it's still the original - can't hear it unless you are in neutral with the engine running and your foot off the clutch - and when it is like that the layshaft bearings are much louder ;D " |
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Nathan
Club Retro Rides Member
Posts: 5,650
Club RR Member Number: 1
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Any MGB related XpertsNathan
@bgtmidget7476
Club Retro Rides Member 1
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Jan 16, 2007 16:31:38 GMT
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Huum Sounds a worth it if the box is out, but how long has this bearing been in.
MG engine has been in for 3 years now on the same bearing, I always thrash the knackers off the car whenever I can and I do have the issue of riding the clutch, Yet this one shows no real sign of bad wear.
The only thing that I do notice is the Overdrive slipping due to oil but noting else.
If mine was to go now I would go down the Roller bearing route though.
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filmidget
East Midlands
Mostly Lurking
Posts: 1,652
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Jan 16, 2007 16:44:09 GMT
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As an aside... that's a monster overkill crane he has bought (good lad) - 1 ton at 3/4 extension Me and a mate bought the same one, in case we had to remove his Healey 3000 engine - I use it instead of a trolley jack to lift the whole car up |
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'79 MG Midget 1500 - Still patiently awaiting attention
'02 Vauxhall Astra 1.8 Elegance(!) - Better than you might think
'03 Mazda MX5 - All new and shiny looking (thanks to Antony at Rust Republic)
'09 Renault Clio - Needs to go.
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 16, 2007 18:17:03 GMT
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As an aside... that's a monster overkill crane he has bought (good lad) - 1 ton at 3/4 extension He did ask me and I think I said buy the biggest collapsable crane with the longest reach possible I think he did ;D |
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bstardchild
Club Retro Rides Member
Posts: 14,962
Club RR Member Number: 71
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Any MGB related Xpertsbstardchild
@bstardchild
Club Retro Rides Member 71
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Jan 16, 2007 18:17:55 GMT
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Huum Sounds a worth it if the box is out, but how long has this bearing been in. 18 mths!!!! If mine was to go now I would go down the Roller bearing route though. I think it would be wise  |
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