Hi,
A question for the doc or others. I've had a 9FXey Mk2 engine sitting here for about 20 plus years. It had been dismantled and oiled up and wrapped in glad wrap. The other day I decided to open it up to refresh my memory as I thought I'd sell it as I don't need/want it any more. To my horror I found that it had been dropped at sometime in the last when ever and the
rear main bearing cap which was just sitting over the studs and not bolted down was bent and the 2 studs have broken a small piece away from the base of the 2 studs as deep as the step on the stud. Being the end cap and not a centre one is it still usable or is it an anchor?
Sorry I don't know how to post pics.

Tony

Have you got a picture of the damage?

Perhaps a larger stepped replacement locator could be machined into a similarly machined location?

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

Hi,
I managed how to put a pic up. this is the damage what do you think?

oOOOOHHH....

That doesn't look good at all...

I might defer to the welders on here...Doc?

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

I doubt it would be weldable, someone that specialises in welding may be able to help.
If it was mine, I'd fit new studs and use it. Probably not for a high HP motor but standard rebiuld would be ok. Most of the forces push on cap.

That has broken away right where the stress is created, when the stud nuts are tightened to 55+ ft/lb.
Sorry to be the bearer of bad news for a rare block, but I think it's toasted.

Sure, it could be gas welded with manganese bronze or nickel bronze (or maybe use TIG) but being cast iron, I'd not risk it. It's not just a chunk out of a block in an under-stressed area.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

thanks Doc, I kinda had a feeling that may have been the case.
Bummer
well the crank rods and main caps will still be handy.

Would you like to sell it?
I would like to use it for few things I am trying
Cheers

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The formula for the length of a piece of string is simple: Twice as long as from one end to the centre!

Hi,
I have the std crank which will need a regrind and the rods and pistons.
the block is 40 thou over. Pm with an offer. if you like.
thanks.

Take it to a cylinder head specialist and have it cast iron welded properly. It will need to be stripped bare and require a line bore and appropriate machining afterwards but its worth it, S blocks are not exactly easy to come by these days.

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Have a Nice Day.
If already having a nice day please disregard.

Their are a number of welding techniques that can be used to repair this type of material, agreed that a specialist welder would be required. I have repaired similar damage using a powdered system call Eutalloy, expensive but effective !.

Mal

If nothing else, you have a perfect excuse for a Mk2 S Block coffee table

Could the whole bearing web be machined away, a new web/saddle be machined up and welded in or bolted in?

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"Show me the Mini!"

Hi, I'm going to take it to a local old school engine shop
and see what they think. Failing that i've had a few offers
for it I'm considering.

Or the coffee table sounds good but I can't see the missus
going for it.

I can understand that. Being a mini engine, it would probably still leak oil