Which Clutch?

[IanC]

Iv got a 72 stag with a rover v8 in, however it still retains the stags four speed box, Ive been told it should be the rover clutch however just want to confirm. Think its the release bearing thats gone so just going to replace the lot

[stagstr]

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Ian,

If you look at Rimmers catalogues for both the Stag and the Rover SD1 it looks like both cars have the same friction plate but different pressure plates and release bearings.

If you have the Stag bellhousing Iwould imagineyou havethe Rover variety clutch pressure plate in order to match up with the drillings and dowels in the Rover flywheel. The release bearing and the whole throw-out mechanism is likely to be Stag.

If that is the case you will not be able to buy a 3 piece kit labelled as being for Rover, (or Stag) and often sold cheaper than buying the 3 pieces separately. Not a major issue though.

In the unlikely event that the Rover input shaft is identical to the Stag variety you may have the Rover bellhousing, in which case the whole lot will be Rover. If my memory serves me right the adaptor plate which allows the Rover engine to be mated to the Stag gearbox goes between the engine block and the Stag bellhousing so it is unlikely you have the Rover bellhousing. Perhaps someone else can confirm that.


cheers

Ray

[IanC]

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ok cheers for that, we'r going to get the box off back end of this week then get the parts ordered. Il let you know how I get on

[martin]

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I hope you've got a heated garage ! Martin.

[grahamb]

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Ive got a stag engine and a stag gearbox and I cant get the right clutch! - Good luck

[IanC]

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we got the gearbox off (well my mate did as im useless with mechanical work) and found the clutch was completely free which isnt what I expected...

The problem with the car was that when trying to pull away it would just rev freely and then suddenly lurch forward. Changing gear it felt like the drive wasnt being engaged. I thought that the problem must have been the clutchnot biting, perhaps sticking on the shaft or something.

What ive been told by the guy doing the work is that the pressure plate has hairline cracks in it but other than that it appears to be okay. None the less im going to replace everything while the box is off, havnt tried ordering the parts but hopefully all will go smoothly, im picking the old bits up tomorrow so that I can give rimmer bros or hart's all of the info off them, in the hope il order the right bits.

My concern is that the problem will persist once its all put back togeather. Another friend and fellow stag owner suggested tonight that it could be the gearbox, It used to whine a little bit which I thought was normal however he says it shouldnt, and now thinking back it used to be a bit of effort to get into second gear until it warmed up, and sometimes used to crunch into reverse.

This all might point to an obvious problem that I am missing, however the stag is the first classic car ive driven, my father had one for years but most of them off the road, and his was an auto so not much use to compare gearbox issues. If anyone can give any advice itl be greatly appreciated!

Cheers, Ian

[Ian F]

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Ian - If I remember correctly there was an article in the Stag mag about this particular sort of problem. Apparently dependant on the release bearing and pressure plates fitted, and the year of the Stag etc. (There were apparently a number of modifications over the years, similar parts in the 2000, 2500 range getting incorrectly fitted etc.), the lever operation releasing the clutch can stick?

May or may not be the issue - suspect it was in the Mag. some 4-5 months ago - may be worth a look?

Hope this is some help - otherwise try searching for clutch release bearing on the forum and see what links come up?

Ian F

[martin]

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I know I run an auto, but this is interesting. I've both heard and read, that Paddocks do a modified clutch assembly thatcan take care of this hanging up prob. Martin.

[IanC]

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Ian F - cheers for that info il have a look in them mags and see if i can find anything, Il know more tomorrow what pressure plate and so on has been used in the car as im getting all of it tomorrow morning.

I think my mate tried adjusting the lever you mention first? if this is the one that is visible beneith the car without removing the box. He altered it however after he had done it couldnt get any gears. Again I could be getting completely mixed up there, he only explained it to me I didnt see what he was talking about.

martin, cheers il check out paddacks, dont think ive looked on there site



edit: got the parts back, and presumingit was the correct parts in the first place,there are some numbers on the parts I need as follows.

Friction plate - stamped with Borg and Beck - 52509 - ap approved
Cover - ap stamps and the number LC03LR002A


tried AP racings website, (parts have loads their logo stamped all over) but cant find any mention of a stag clutch, however they do make one for the SD1, going to try to call them up see if i get any joy

[Ian F]

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Ian - knew I had seen it - look at November's issue of the Stag mag. Page 37.

Various issues with release bearing carrier, operating fork, the bearing itself etc.

The adjustment on the side of the gearbox is ( I think) that there are 3 holes on the operating lever. My own was in the nearest hole to the gearbox, resulting in a very, very heavy clutch that "bit" as soon as I lifted my foot of the floor. I changed it to the middle hole resulting in a much lighter clutch but initial difficulties with getting the gears to clear - gone away now the clutch plate has bedded in.

If you look at the article it may help - or add to the confusion.

Regards

Ian F

[IanC]

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Ah yes that is the same part I was refuring too, I beleive we did the opposite though, it was on the middle one and tried moving it up closer to the box however (probably due to my clutch being more worn, and the pressure plate broken almost in half!!!!) this meant that he couldnt get the car into gear. Cheers for the info though! Definately worth having articles in the stag mag like that to refur to!

Today I took the gearbox and clutch partsto Arthur smith who has been working on stags since before I was born. Ifound out it is an original stag clutchand after looking at the box he pointed out a few things which could be improved

The bushes which go either side of thecross shaftwhere worn, and the release bearing carrier had play in it which most likely helped kill the pressure plate so getting that replaced, along with the pins in the clutch fork and the bolt that holds it on. Im picking the box up again on friday along with the clutch kit so hopefully all will be sorted back end of next week.

Like to say cheers to everyone who offered advice, dont know what id of done without forum, magazine and club members advice