Oil in the blind hole. Once you tighten it up the hydraulic pressure cracks the material. My best guess on the cause...
Any Old Iron!
- MiNiKiN
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Re: Any Old Iron!
Yes I am a nerd: I am researching the Austrian Mini-racing scene of the 60s and 70s 

- timmy201
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Re: Any Old Iron!
I'd think because both stud holes are cracked the same direction it would more likely be due to a drop/impact while the cap/studs were installed.
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Re: Any Old Iron!
That was my guess too.
I was not criticising the seller, he was perfectly honest about the damage. I do wonder about the bidders though.
- Costafortune
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Re: Any Old Iron!
As soon as you can buy all this stuff new again at a reasonable price, particularly cranks (most of which were scrap 30 years ago) then the price of all this stuff will drop to what it should be, i.e 50 quid and a Twix.
All these blocks, cracked, milled, bodged, bored and sleeved to buggery, cranks ground to 50 thou and probably full of cracks - just door stops depriving a foundry of a decent feed.
All these blocks, cracked, milled, bodged, bored and sleeved to buggery, cranks ground to 50 thou and probably full of cracks - just door stops depriving a foundry of a decent feed.
- Hipwell
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Re: Any Old Iron!
FWIW, Those on Instagram, (probably not many lol), KAD repaired this (or what looks much the same failure) on another S block this week.
Theres numerous pics/videos, midway screengrab.
Theres numerous pics/videos, midway screengrab.
You do not have the required permissions to view the files attached to this post.
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- 1275 Cooper S
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Re: Any Old Iron!
Sometimes it is worth paying the $$ when you get such incredibly professional work. You can drive home with a smile on your face knowing that you got what you paid for.
Hats off to British engineering once again. Compare that to the sort of crap work that I have seen here in Western Canada.....to rub salt in the wound is the cavalier attitude and the ridiculous prices that we are subjected to.
That is a beautiful piece of workmanship......would love to have that option here.
Hats off to British engineering once again. Compare that to the sort of crap work that I have seen here in Western Canada.....to rub salt in the wound is the cavalier attitude and the ridiculous prices that we are subjected to.
That is a beautiful piece of workmanship......would love to have that option here.
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- 1275 Cooper S
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Re: Any Old Iron!
Could be Mark, but the point is....maybe the owner wanted to retain that block...maybe the date etc. was important....
As I said.....sometimes it is worth paying for top workmanship.
I would trade our crap for that any day. Just my opinion.
- Exminiman
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Re: Any Old Iron!
Sort of raises the question, about the MS block and what date code would it have.
Probably not practical, but would be good if you could choose date code you wanted
Closer to the original block the better in my view
I can understand someone wanting to keep original block that came with car, but other than that, a replacement block is just another block with a date code that's close.....from another car.
Probably not practical, but would be good if you could choose date code you wanted

Closer to the original block the better in my view
I can understand someone wanting to keep original block that came with car, but other than that, a replacement block is just another block with a date code that's close.....from another car.
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Re: Any Old Iron!
Sort of raises the question, about the MS block and what date code would it have.
Probably not practical, but would be good if you could choose date code you wanted
That ain't going to happen, is it. How could you order a date coded block when the numbers are cast into it, it would mean them being cast to order. .
- Exminiman
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Re: Any Old Iron!
Guessed as much, Just thought would be icing on the cake.....cant be beyond the wit of man....mk1 wrote: ↑Fri Feb 03, 2023 8:08 amSort of raises the question, about the MS block and what date code would it have.
Probably not practical, but would be good if you could choose date code you wanted
That ain't going to happen, is it. How could you order a date coded block when the numbers are cast into it, it would mean them being cast to order. As with all stuff like this 90+ % will be going to Racers who don't give a stuff about things like this.
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Re: Any Old Iron!
The only way that anyone can get costs down on a project like this is by casting a large number of blocks in one go & machining them in the same way. Invariably there is as much cost in setting up as there is in machining time. Doing a large number together amortises the set up cost over a large number of items. Doing them individually would push the price up exponentially. I doubt that anyone would want to swallow the cost of a date coded block, even if someone was prepared to do them.
- Costafortune
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Re: Any Old Iron!
IndeedCostafortune wrote: ↑Fri Feb 03, 2023 3:54 pm Imagine talking about date coded blocks 40 or 50 years ago.![]()


- mk1coopers
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Re: Any Old Iron!
Historic race cars haven't had to use cooper s blocks for years .
I think they would be very limited demand for new blocks for appendix K 1293 race engines
Formula Juniors have to use blocks with tappet chest covers but technically they should be AEG 151 thin flange ones
I think they would be very limited demand for new blocks for appendix K 1293 race engines
Formula Juniors have to use blocks with tappet chest covers but technically they should be AEG 151 thin flange ones
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Re: Any Old Iron!
What are Minispares up to with their recast a-series blocks?
I haven't seen or heard anything about them since IMM60?
- Exminiman
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Re: Any Old Iron!
Phoned them up last week to ask the question, transferred to someone “ who would know”.was told maybe by end of this year, more likely early next….still some testing to do though. If anyone knows any more please do chime in
- Exminiman
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Re: Any Old Iron!
Thats all I could think of, maybe in aluminium……..possible factory option or kit, for those who need it or want it….mk1coopers wrote: ↑Fri Feb 03, 2023 5:37 pm Just 3D print a date code, stick it to the block, paint over it ?
Had my tongue firmly in my cheek when I suggested it though ……