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Changing Sump Gasket


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Hi

It is quite straight forward. You will have to make sure you use a torque wrench to tighten the bolts back up, especially the ones at the front of the engine, as there is an Aluminium bride piece there, that allows access to the front main bearing. I managed to strip the threads on one and had to put a Helicoil in.

If you check your crankshaft end float, it would be an ideal time to renew the thrust washers, if it is a little on the high side. These are not very expensive to buy.

 

Mike G

Edited by Mike G
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It is also worth going round the flange of the sump with a hammer and dolly or something similar to make sure the flange is flat and undistorted, a lot of them have been abused by overtightening over the years.

Ron

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I wonder if most people buy this gasket, as part of a bottom end gasket set? All you need is a sheet of gasket paper and a punch : it takes only 15 minutes.

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Hi

It is quite straight forward. You will have to make sure you use a torque wrench to tighten the bolts back up, especially the ones at the front of the engine, as there is an Aluminium bride piece there, that allows access to the front main bearing. I managed to strip the threads on one and had to put a Helicoil in.

If you check your crankshaft end float, it would be an ideal time to renew the thrust washers, if it is a little on the high side. These are not very expensive to buy.

 

Mike G

 

Cheers for all the advice. Not massively mechanically minded, but think I'll have a go at the thrust washers aswell. Have to have a look at the haynes manual, hopefully easy to follow!!

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Hi

Once the sump is off the thrust washers are easy, [apart from having to do it lying on your back with the odd oil drip!] take off the rear main bearing cap, turn the thrusts out one at a time, easiest way is using the new one to poke the old one out, important, fit the new ones with the oil grooves facing away from each other ie towards the crank journal, refit the bearing cap the correct way round and torque it.

The size or oversize of the thrusts is marked on them, try and get your end float near to the minimum, the easiest and most accurate method of checking the end float is with feeler gauges at the new thrusts before the cap is replaced.

Ron

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Has anyone done the sump gasket on thier Tr6, and if so how hard is it? Anything I need to watch out for?

 

Cheers

 

if you are interested or any one else? i could machine your rear bearing block to take a 3rd thrust washer.£15.00

i have done my own on 2 engines. and when done its one less thing worry about.

i would post a picture but i dont know how.contact me for a picture and more info.

richard rpurchon@ntlworld.com

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Hi Richard

Sorry to be a bit dim but could you explain how adding a third thrust washer helps. I 've never looked at mine in 30 years but hear plenty of horror stories about them so I guess I should pay them more attention. How does a third thrust washer aid longevity or stop the others turning/falling out?

Thanks for your help

Regards

Les

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Hi Richard

Sorry to be a bit dim but could you explain how adding a third thrust washer helps. I 've never looked at mine in 30 years but hear plenty of horror stories about them so I guess I should pay them more attention. How does a third thrust washer aid longevity or stop the others turning/falling out?

Thanks for your help

Regards

Les

 

ok , every time you press the clutch and if you have std cooling fan the crank is pushed forward.against the

the rear thrust washer. eventualy the thrust washer will wear enough to turn and drop into the bottom of the sump.

and the crank will wear against the rear bearing cap. yes it will take along time apx 30 years and 1 month ?

if you have 2 washers at the rear it will take twice as long.

cheers richard

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Hi Richard,

Thanks for the explanation. I was browsing the site at work on Friday and should have engaged my brain before posting. I came home and looked in my Roger Williams "How to improve " page 102 and noticed he recommends exactly the mod you described. I had forgotten we only have half thrust washers and they are only in the crankcase. Next time I have the sump off I will have a good look at them. Thanks again for your patience and the explanation.

Regards

Les

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if you are interested or any one else? i could machine your rear bearing block to take a 3rd thrust washer.£15.00

i have done my own on 2 engines. and when done its one less thing worry about.

i would post a picture but i dont know how.contact me for a picture and more info.

richard rpurchon@ntlworld.com

 

Hi Richard.

 

I want to have my rear bearing block machined to take a 3rd trust washer.

Can you mail me your adress and info to : oenord@hotmail.com

 

Regards

 

Oystein

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Gasket is done, and think it still leaks even though put lots of Hylomar on. :(

 

Looks to be coming from the front, sure the front wasn't flush which is why.

 

are you sure its not the front oilseal or timing cover leaking..is hymolar silicone?

if so all the stringy bits will block the early oil pump filter [ did it on mine ] or get into a oil way.

richard

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are you sure its not the front oilseal or timing cover leaking..is hymolar silicone?

if so all the stringy bits will block the early oil pump filter [ did it on mine ] or get into a oil way.

richard

 

Hylomar is just a paste to help seal gaskets not sure if its silicone as it doesn't set, hope is won't block anything! Could well be coming from some where else, will have to get it back up on the ramps and have a look.

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