Unimog Club UK
General Topics Forums => General Banter! => Topic started by: Stickman on September 01, 2019, 12:08:49 pm
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My ‘75 421 engine is ready to be put back together and finally have some chance of starting. Maybe even using it some day :)
The rings needed are 92mm 3mm2mm and 4mm oil seal). The largest oversized available is 91.5. (616.915-10-002714)
Don’t seem to be available at all. Any thoughts where to source or why the big bore? I was hoping these rings are used in another merc engine or other vehicle but can’t make any headway.
Ta.
James
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Hi the 615 engine was used in some cars trouble is it was a short run so parts could be hard to find worth trying Manfred prince at Westfield 4x4 he does a lot with the 636 and maybe able to source some rings. I’ve fitted a 616 into a 421 before that’s a good conversion. Still got the 605 engine 😂
Moose
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Cheers Moose. Looks like it is the 616 engine as the engine number starts with 616.
I trie Manfred P already plus plenty of others. This I have finally found a set. Almost 400 euro though!Hopefully this will be the last piece of jigsaw for motoring. I can get another 616 engine from a car for the same price. The clutch may be a problem joining up and also wouldn't know its history. Thanks for responding.
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I’ve got a 616and 615 the flywheel and clutch fit fine. I do like the 421s
Moose
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good to know. will keep it as a back up plan. Ta
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Maybe the rings are the same as a 617?
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They were Mahle (4th rebore) set, rare and had to shell out the big bucks in the end. It was a size bigger than Merc recommended boring to apparently.