Clutch thrust bearing issue

Talk about the E-Type Series 1

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Bakergt40
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#1 Clutch thrust bearing issue

Post by Bakergt40 » Wed Jun 24, 2020 3:34 pm

Hi all, having just had my 3.8 engine upgraded to fast road spec.
After 500 miles there’s a bad rattle from the clutch area that disappears when the clutch is depressed.
E type U.K. have recently built the engine and replaced the clutch and much more and they have the car. We believe the thrust bearing is the issue and there looking at a quality replacement.
Surely there are heavy duty bearing out there, they said they have had this issue before.
I know they will fix it but what say you
Thanks Keith
Keith Baker
Series 1 fhc 1964
XK140 OTS 1956
Southern GT40 2012
Aston Martin Vantage 2019

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cactusman
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#2 Re: Clutch thrust bearing issue

Post by cactusman » Wed Jun 24, 2020 4:43 pm

The std bearing is a carbon release bearing....upgraded one's tend to be ball races....My local MG specialist who prepares MGC's for racing told me ages back to avoid the "uprated" roller bearings as, quite apart from the dubious quality of some updated bearings, the clutch release plate is designed for a carbon release bearing (unless you are using a fancy clutch of course). For road use with a std clutch his take was std bearing in MGB and C...and an E type clutch is very similar. So long as you don't ride the clutch or sit at the lights in first with the pedal depressed then the carbon release bearing will outlast the clutch anyway...your rattle may be the bearing tinkling against the clutch release plate or input shaft when the clutch is not depressed and the bearing is under no load....or it may be the death rattle of the bearing :cry:
Julian the E-type man
1962 FHC
1966 MGB....fab little car too

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mgcjag
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#3 Re: Clutch thrust bearing issue

Post by mgcjag » Wed Jun 24, 2020 4:56 pm

Hi Keith...the standard bearing should be more than suitable.....however there have been bad batches in the past and E type UK should be up to providing suitable replacement....any type of upgraded or "heavy duty bearing"could leave you in a similar position as not many are useing them so we have no real feel for their reliability.....Steve
Steve
1969 S2 2+2 & Building a C type replica

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Bakergt40
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#4 Re: Clutch thrust bearing issue

Post by Bakergt40 » Wed Jun 24, 2020 9:24 pm

Thanks for the replies so far.
Bad batches, does this mean cheap parts from somewhere like China ?
My original clutch was still good and it had run at least 12k
I’m hoping e type U.K. sort it quick while the suns still shining 🤪
Keith Baker
Series 1 fhc 1964
XK140 OTS 1956
Southern GT40 2012
Aston Martin Vantage 2019

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rfs1957
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#5 Re: Clutch thrust bearing issue

Post by rfs1957 » Sat Jun 27, 2020 1:25 pm

I heard that a spate of recent problems were with the clutch cover, or rather the centre thrust pad (that is carried on the end of the spring-fingers) that takes the effort from the carbon release bearing.

As I've not closed mine up yet I shall be very interested to hear what the conclusion was.

You might want to read these exchanges from when I discovered a whole lot of wear on the clutch release fork and the bearing "ears".

viewtopic.php?f=3&t=11948&p=106935&hilit=clutch#p106935

I still don't know what was at the origin of this, but the thrust surface on the clutch housing was not the issue.

There's absolutely nothing wrong with the standard carbon release principle, but doubtless it is possible to buy rubbish copies from the idiots in the trade that give them to their cents-to-the-pound suppliers and say "copy that".

With the gigantic margins that are available, any fool can give a guarantee and still be quids-in ; unfortunately, with a part like that, the price of the part is a drop in the ocean in comparison with the work required to replace it ............
Rory
3.8 OTS Cream 877393 Built May 28th 1962
1978 Mini Van
(plus bevel and belt single-cylinder Ducatis)

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madjack4
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#6 Re: Clutch thrust bearing issue

Post by madjack4 » Sat Jun 27, 2020 8:35 pm

Hi its possible they forgot to fill the gearbox with oil if they drained it of course when the clutch is pressed the box stops spinning if the box has no oil in they rattle as the baulk rings and hubs rattle like mad with no oil to cushion them just a thought

Regards

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Bakergt40
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#7 Re: Clutch thrust bearing issue

Post by Bakergt40 » Sat Jun 27, 2020 11:11 pm

Again thankyou for replies
It should be back completed by end of next week and I’ll update then
Hopefully they’ll find a definite fault or it will always be in your mind .
It has had the same clutch for 23 years since rebuild and at least 16k miles with no issues so I would like at least the same now
Thanks all
Keith Baker
Series 1 fhc 1964
XK140 OTS 1956
Southern GT40 2012
Aston Martin Vantage 2019

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Bakergt40
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#8 Re: Clutch thrust bearing issue

Post by Bakergt40 » Tue Jun 30, 2020 5:15 pm

Hi all,
Have today been told the thrust bearing was faulty and by all accounts the front moss gearbox bearing is faulty.
I find it unusual for the bearing to be faulty after the initial inspection said the box was in good order 300 miles earlier
However this apparently is chargeable at a large amount especially as the box is out.
They said front bearing but there is one at the rear as well.
On a rebuild what should be replaced assuming the gears are ok which they were.
I like the moss box and this is the cheapest option but what would be a 5 speed conversion cost ?
Keith Baker
Series 1 fhc 1964
XK140 OTS 1956
Southern GT40 2012
Aston Martin Vantage 2019

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mgcjag
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#9 Re: Clutch thrust bearing issue

Post by mgcjag » Tue Jun 30, 2020 5:33 pm

Hi ....search 5 speed gearbox lots on the forum.....think you are in region of £5-6k viewtopic.php?f=9&t=7226&hilit=5+speed+gearbox+cost
Steve
1969 S2 2+2 & Building a C type replica

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Bakergt40
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#10 Re: Clutch thrust bearing issue

Post by Bakergt40 » Tue Jun 30, 2020 6:00 pm

Thanks
What C type are you building ?
Keith Baker
Series 1 fhc 1964
XK140 OTS 1956
Southern GT40 2012
Aston Martin Vantage 2019

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mgcjag
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#11 Re: Clutch thrust bearing issue

Post by mgcjag » Tue Jun 30, 2020 6:04 pm

Hi..whats your name...please try to put it in the signature area....Im building a Realm.....Steve
Steve
1969 S2 2+2 & Building a C type replica

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cactusman
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#12 Re: Clutch thrust bearing issue

Post by cactusman » Sat Jul 04, 2020 4:36 pm

Hi Keith....probably won't help but I know a company that will rebuild the box properly....they currently do the boxes for all the Jaguar Landrover classic rebuilds and various racers too....if you want the details pm me....Julian
Julian the E-type man
1962 FHC
1966 MGB....fab little car too

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PeterCrespin
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#13 Re: Clutch thrust bearing issue

Post by PeterCrespin » Sun Jul 05, 2020 10:38 pm

Bakergt40 wrote:
Tue Jun 30, 2020 5:15 pm
Hi all,
Have today been told the thrust bearing was faulty and by all accounts the front moss gearbox bearing is faulty.
I find it unusual for the bearing to be faulty after the initial inspection said the box was in good order 300 miles earlier
However this apparently is chargeable at a large amount especially as the box is out.
They said front bearing but there is one at the rear as well.
On a rebuild what should be replaced...?”
0h dear. I am clearly getting cynical in my old age. The probability of two separate, fitted, functioning, and durable components failing simultaneously has how many zeros between the decimal point and the number? How many extra zeroes when the cheaper one is known to be only perhaps 15% into its expected lifecycle?

Which is not to decry the entire ‘whilst we’re in here’ philosophy, but...

It’s probably just me
1E75339 UberLynx D-Type; 1R27190 70 FHC; 1E78478; 2001 Vanden Plas

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rfs1957
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#14 Re: Clutch thrust bearing issue

Post by rfs1957 » Mon Jul 06, 2020 9:16 pm

It’s me too.

They are swinging the lead, covering up one problem with another.

Or should I say, Swing That Lamp.

Both nautical heirlooms from my Birkenhead family’s vernacular, and a sop to Peter.
Rory
3.8 OTS Cream 877393 Built May 28th 1962
1978 Mini Van
(plus bevel and belt single-cylinder Ducatis)

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madjack4
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#15 Re: Clutch thrust bearing issue

Post by madjack4 » Mon Jul 06, 2020 10:46 pm

As i said in my last post NO OIL in box that explains bearing failure easy done get broke off job and forget to fill it
Regards

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