1982 GTC project gumtree

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ard126k
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1982 GTC project gumtree

Post by ard126k » Tue Jun 05, 2018 7:46 pm

Thanks for all your congratulations, however keep the champagne in the fridge because as I set out on the maiden voyage the diff seized up! Yes it did! Recovered home and the investigations will begin once I've figured out how to drag the hulk from the side of the road back into the garage. Going to the pub now......


1971 SE5 1977 SE6 1982 GTC

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Will Anderson
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1982 GTC project gumtree

Post by Will Anderson » Tue Jun 05, 2018 7:48 pm

Ouch! :(


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1982 GTC project gumtree

Post by MikeyBikey » Tue Jun 05, 2018 7:50 pm

Bugger. Car looks lovely though. Please get it sorted ASAP and still enjoy the summer and bask in your achievement.

I have changed complete axles in a se5 and whilst a bit tedious, it’s not hard to do. So might be an option. Also is it the diff or say a rear drum brake , or both drums, etc


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Post by ard126k » Tue Jun 05, 2018 11:38 pm

Pretty sure it's the diff, we lifted the back end and found wheels turning (opposite directions) but pinion not - with the propshaft disconnected. So it must be the pinion or crown wheel that's gone wrong. I think!


1971 SE5 1977 SE6 1982 GTC

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Post by ard126k » Tue Jun 12, 2018 6:34 pm

I got the pinion nut off, which was VERY tight, and removed the flange, which was also unwilling to come off, and the diff now turns although feels very rough. pinion bearings fritzed I think. So I'm going to blame whoever put it together for overtightening things!
Anyone got a surplus axle?


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1982 GTC project gumtree

Post by Corky » Tue Jun 12, 2018 7:00 pm

The diff ratio on the Cologne engined cars is different to the Essex.

A few owners have fitted 6/6A axles over the years though.


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Post by Dennis Nicholas » Wed Jun 13, 2018 1:29 pm

ard126k.....if your crown and pinion are intact and not toothless would it perhaps be better to rebuild with new bearings?
Any unknown replacement axle may have suffered at previous owners hands. Aparent overtightening may actually be due to an application of Locktite to threads and shaft/flange. Another highly likley ruination of the CP would be half shaft end float where someone has divided the total end float and put equal shim sizes on each side instead of working out shims required individually on each side (see explanation on a previous thread i.e. each tube of the axle were not exactly the same length but may be a good few thou different in length).


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Post by ard126k » Thu Jun 14, 2018 11:12 am

:oops: Red face time! I decided to have a look at the innards, drain plug out followed by 2 DROPS of oil. Why I didn't ever check the level I shall never know. Although to be fair some of my mechanically-minded mates have said that even without oil an axle should run (noisily) for a bit more than a mile!
Back to the problem - If the marks on the nut are to be believed it was either quarter or half a turn too tight
IMG_0892.JPG
IMG_0892.JPG (110.55 KiB) Viewed 143 times
but all the gears inside look to be serviceable
IMG_0889.JPG
IMG_0889.JPG (134.18 KiB) Viewed 143 times
IMG_0887.JPG
IMG_0887.JPG (162.29 KiB) Viewed 143 times
I've neither the expertise or the tools to strip and rebuild an axle so I think replacement is the only way to go. As Corky points out the GTE axles are different, so I hope one of those will give quieter/cheaper motoring. I've been spoilt by the overdrive in the SE5!!


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1982 GTC project gumtree

Post by philhoward » Thu Jun 14, 2018 11:20 am

The marks won't apply if the crush spacer has been replaced at some point - it won't have had marks on it from new. Putting marks on the nut and shaft is a way of doing seal replacement DIY-style.

Somewhat irrelevant though - the lack of oil is probably the cause of bearing failure :( although it doesn't looks like a disaster area in there?


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1982 GTC project gumtree

Post by scimjim » Thu Jun 14, 2018 12:19 pm

The gears are probably fine - I’d consider getting someone to replace all of the bearings and keep the axle you know?


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Post by ard126k » Thu Jun 14, 2018 5:41 pm

Any recommendations, ideally East Scotland?
Thanks


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Post by Dennis Nicholas » Thu Jun 14, 2018 8:44 pm

Talk to Mark Wilson in N Yorkshire. If he can do it it would mean courier probably but Mark has all the info for that sort of thing.

Dennis


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1982 GTC project gumtree

Post by gtcse8 » Thu Jun 14, 2018 9:24 pm

My ears are really burning tonight.

Just supplied my last set of 3thou bearing shims to Martin in Accrington, and have the half shafts to sort for Dave Greanhalsh for is sprint car.


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