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MG TD TF 1500 - Help - rattle update

I have checked through the earlier suggestions, for which many thanks. I quickly eliminated the water pump and removed the radiator and water pump on route to the timing chain case.

Trying to remove the dog nut, with the car in gear and hand brake on, was disconcerting.

The dog nut turns freely in both directions with an ominous rattle from within the timing chain case. So, I presume something is broken!

Two questions:

1) what do you think is broken (unless I am mistaken) and will need replacing?

2) how do I remove the dog nut?

Many thanks for your input.
Ian Bowers

SORRY to be the bearer of BAD NEWS, but it's engine removal time as it is a broken crankshaft.
Sandy
ss sanders

Yep, agree with Sandy...only thing that will allow the dog nut to turn in both directions (without tightening or loosening) is a broken crankshaft.

Gene Gillam

Hate to say it, but I agree with the guys. How to remove the nut: with the block out and upside down, remove the front main cap, put the broken piece of crank in the vice and remove. Seriously, you can pull the pan first and look at the crank to make sure. George
George Butz

I have had the dreaded broken crankshaft. If the engine did not turn over again after you heard the noise, then the crank is most likely broken just behind the first journal. I drove mine a mile with a broken crank, turned it off and then engine was frozen, broken crank. It aint cheap to fix but I went modern after that. new billet crank, modern steel rods and special pistons, would also recommend the new cam and lifters that Len puts out. Let us know what you find...
Tom Maine

I think all the evidence, and your comments suggest that a break at or near the front web is the failure. It will be interesting to see just how the engine continued to run with the crank and cam shaft staying in synch. And also what caused the heavy rattle without the chain drive slipping.

Reach for the bank book, I fear.
Ian Bowers

I broke my crank at the front web on my TD in 1963 and was able to drive some 5 miles home albeit with close to zero oil pressure. The break is normally oblique to the crankshaft centreline so that drive is maintained (but very rattly!!).
Peter Malkin

Ian,

Bad news about your crankshaft, some better news Moss Europe have a sale that present and are advertisinf a new crank for about 1500 less 17%

John
J Scragg

This thread was discussed between 14/04/2014 and 15/04/2014

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