trevor Posted October 28, 2013 Report Share Posted October 28, 2013 As the Gearbox is comming out (again) this week , I am considering putting in a new spring clutch, I have tried a new clutch in a fellow group members TR3a ( a winner at Malvern ) and it was so much lighter than mine which would be very good for my comfort . There are some old Borg and Beck cover plates and release bearings on eBay , would this be a better route ? Your thoughts most welcome !!! Cheers Trevor Quote Link to post Share on other sites
BlueTR3A-5EKT Posted October 28, 2013 Report Share Posted October 28, 2013 What clutch did the car you drove have? You will probably be looking for Borg and Beck part number HK9788 which is the part number for the 3 piece clutch kit. Peter W Quote Link to post Share on other sites
ianc Posted October 28, 2013 Report Share Posted October 28, 2013 When I bought 4VC in 1969, it had a competition clutch. This was a killer on the left leg if I had to hold the clutch disengaged for any length of time. When the car was re-built in the early 1990s, Neil recommended and fitted a TR6 diaphragm clutch, which is a vast improvement in that it takes the power (about 135-140 BHP) yet is so much lighter to operate. Of course, it requires a different release bearing, but I don't know what else (if anything) changes. Ian Cornish Quote Link to post Share on other sites
RogerH Posted October 28, 2013 Report Share Posted October 28, 2013 ....or the laycock cover to make it easier still. Roger Quote Link to post Share on other sites
ChrisR-4A Posted October 28, 2013 Report Share Posted October 28, 2013 If I remember rightly don't you need the tr4a flywheel as well to take the diaphram cover. Still well worth doing. Quote Link to post Share on other sites
peejay4A Posted October 28, 2013 Report Share Posted October 28, 2013 Also aren't there different gearbox front covers to contend with or perhaps that's not a consideration with just a change of clutch cover. Quote Link to post Share on other sites
John Morrison Posted October 28, 2013 Report Share Posted October 28, 2013 If you are looking for a lighter clutch pedal then you are looking to go down the TR4A to Tr6 route with the diaphram rather than a spring clutch as TR4. Gearbox is unchanged, you need the three peices of the 4A onwards clutch, plus either a 4A flywheel, OR your flywheel redrillled to take the 4A cover, - simple machine shop job. As you are on a gearbox out mission, and looking for a lighter pedal, then this is really a no brainer. If you were not removing the gearbox, then I think you can sort servo assistance for the original clutch. John. Quote Link to post Share on other sites
trevor Posted October 28, 2013 Author Report Share Posted October 28, 2013 Thanks for all your replies, I think I will investigate the TR4a route , I 'me always afraid of opening a can of worms though !! I remember reading that the quality of these clutches was suspect, any suggestions as to where is the best place to source it from. Quote Link to post Share on other sites
John Morrison Posted October 28, 2013 Report Share Posted October 28, 2013 Trevor, there was a batch of three fingered plates on the diaphram clutch, don't think there are any left about now, also on a TR4 you don't need the expensive Laycock assembly Borg and Beck are fine, If you want clarification on this ring me, details back of the mag - Cumbria Group. John. Quote Link to post Share on other sites
Fireman049 Posted October 28, 2013 Report Share Posted October 28, 2013 (edited) Hi Trevor ~ I was lucky enough to buy a Laycock pressure plate from TR Bitz. It replaced the heavy spring clutch on my 3A. The first diaphragm clutch I fitted wouldn't work at all. I had to remove the gearbox three times! The clutch didn't have a makers name and John Sykes came to my rescue. Tom. Edited October 28, 2013 by Fireman049 Quote Link to post Share on other sites
RAHTR4 Posted October 28, 2013 Report Share Posted October 28, 2013 Hi Trevor, If you do swop to the later type clutch, you will need to shorten the main shaft front cover extension. The TR4 item is 2.3/8" in overall length. The TR4A part is 2" in overall length. See Moss catalogue, page 28, item 57. Regards, Richard Quote Link to post Share on other sites
trevor Posted October 28, 2013 Author Report Share Posted October 28, 2013 Hi all, had a long chat with the people from Somerset who were most patient with a novice like me, they thought a well operating spring clutch should not be too heavy and they only do exchange TR4a one's and so I still need to source a good diaphram clutch. The thought that it might not work like yours Tom scares me a lot. Point noted Richard. I will give you a ring later in the week John, I'm off for a jolly to Calais tomorrow to stock up for xmas !!! Cheers, Trevor Quote Link to post Share on other sites
Fireman049 Posted October 28, 2013 Report Share Posted October 28, 2013 Trevor ~ If you get a reputable clutch cover you'll have nothing to worry about. John Sykes thought I'd got a rogue clutch. Beware some companies offering cut price 'bargains!'. It's best to pay top rate here. Try TR Bitz. Regards ~ Tom. Quote Link to post Share on other sites
Prefect Posted October 28, 2013 Report Share Posted October 28, 2013 If you go for a 6 clutch check out http://www.performanceclutch.co.uk/p0/tr6-1969-1975/233130.htm Helix fast road. I love the one I have in my CR. Also need a release bearing from RTR. Quote Link to post Share on other sites
Guest ntc Posted October 28, 2013 Report Share Posted October 28, 2013 You also need to change the nose cone on the gearbox to 3 spec Quote Link to post Share on other sites
Rodbr Posted October 29, 2013 Report Share Posted October 29, 2013 Or perhaps ???? http://www.ebay.co.uk/itm/Triumph-TR2-6-Hydraulic-Clutch-Release-Kit-/181161712861?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3ATriumph|Model%3ATR+3A&hash=item2a2e145cdd Quote Link to post Share on other sites
Ade-TR4 Posted October 29, 2013 Report Share Posted October 29, 2013 You should have no problems with a decent spring clutch. My car is in 135-140bhp bracket and is fine on the normal (good quality) clutch. Will the gearbox is out, maybe look at getting the flywheel lightened and balanced etc? Ade Quote Link to post Share on other sites
trevor Posted November 1, 2013 Author Report Share Posted November 1, 2013 Hopefully all the prep work is done and the gearbox will be out with a little help on Monday. I have gone down the Borg and Beck route after chatting to TR Bitz , who reckon the Laycock , is only really needed when going into a 6. If anyone knows a good machine shop in Kent I will certainly look at a little lightening and balancing. Richard thanks for the pointer on the main shaft extension cover, I have been told it only applies to very early TR4's but I will check . Cheers, Trevor Quote Link to post Share on other sites
trevor Posted November 13, 2013 Author Report Share Posted November 13, 2013 Gearbox now back from the gearbox guru , all set up for the Borg & Beck clutch. Flywheel balanced and drilled , let battle commence !!! Quote Link to post Share on other sites
fezzsarecool Posted November 17, 2013 Report Share Posted November 17, 2013 have to be careful with the clutch plate, i brought a bargain new one at the triumph spares day, my fault for not giving it a good look over as it was one of 3 fingered plates,only noticed when placing it on my spares rack ,needless to say it went straight into the bin , Quote Link to post Share on other sites
trevor Posted November 17, 2013 Author Report Share Posted November 17, 2013 The I've got is from TR Bitz , so should be Ok!!! Quote Link to post Share on other sites
trevor Posted November 18, 2013 Author Report Share Posted November 18, 2013 Well it took a fair while today but Gearbox is back in just all the extras to do , and testing of course !!! Quote Link to post Share on other sites
trevor Posted November 27, 2013 Author Report Share Posted November 27, 2013 (edited) The car is all back together now. I drove it 25 miles home from my brothers garage where we carried out the work as it's a double and he has power !!! The gear changes are very good and the overdrive goes in very smoothly no 'Donk' anymore , Thank-you Mr Cox. Pleased also with the clutch operation too. Thanks for all your helpful replies and phone calls. Just a couple more jobs to do then out on some 12 car rallies soon.. Merry Christmas everyone , Trevor Edited November 27, 2013 by trevor Quote Link to post Share on other sites
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