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Author Topic: Help with 421 rings  (Read 176 times)

Offline Stickman

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Help with 421 rings
« on: September 01, 2019, 12:08:49 pm »
My Ď75 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)
Donít 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 canít make any headway.
Ta.
James

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Offline moose

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Re: Help with 421 rings
« Reply #1 on: September 09, 2019, 07:41:58 am »
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. Iíve fitted a 616 into a 421 before thatís a good conversion. Still got the 605 engine 😂
Moose

Offline Stickman

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Re: Help with 421 rings
« Reply #2 on: September 11, 2019, 04:21:39 pm »
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.

Offline moose

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Re: Help with 421 rings
« Reply #3 on: September 11, 2019, 08:58:45 pm »
Iíve got a 616and 615 the flywheel and clutch fit fine. I do like the 421s
Moose

Offline Stickman

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Re: Help with 421 rings
« Reply #4 on: September 12, 2019, 02:47:37 pm »
good to know. will keep it as a back up plan. Ta

Offline Villager

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Re: Help with 421 rings
« Reply #5 on: January 10, 2020, 10:24:15 pm »
Maybe the rings are the same as a 617?
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Offline Stickman

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Re: Help with 421 rings
« Reply #6 on: January 14, 2020, 11:43:45 pm »
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.

 

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