Recent content by Castor

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  1. Castor

    Petrol Conrod Differences?

    Thanks. Yes, I reckon, you're right.
  2. Castor

    Petrol Conrod Differences?

    Yup. Same forging stamp. Each rod has a (assume factory) single digit stamped large. I wondered if there was, perhaps, a different axial offset in the big end face machining or something.
  3. Castor

    Petrol Conrod Differences?

    Can anyone tell me what the differences are between the numbered conrods? I think my no.3 is bent...... see my previous thread for the carnage. 😆 And does anybody have one?
  4. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    It's a very low miles per year utility vehicle that we use for beekeeping - if it was being used for anything more onerous, I'd go for sleeving it back to standard.
  5. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    Thanks. I have 4 new piston +40 assemblies from Paddock at £15 each, which is hard to argue with!
  6. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    UPDATE: After a short hiatus, I got the remainder of the dead piston out..... Looks like the initial failure has been there some time and is between the two oil holes at the bottom of the oil control ring groove. I speculate that there may have been a "cold shut" in the casting, or a sharp...
  7. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    Indeed. Old ones look perfect. This engine hasn't done many miles.
  8. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    All bores +040. All look good, but subject to another inspection with better light. I can't feel anything..... I'm still dithering! 😂😂😂
  9. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    Thanks for that. I'm debating whether to replace all four...... dunno yet.
  10. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    Nope. None of those, so far as I can see. Weird!
  11. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    This looks just like that. It's an MoD recon, so I guess they used good parts? But yes, good question, was there a failure from the ring groove root?
  12. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    It's +40 on first quick measurement. No real wear, can't catch anything with a fingernail.... Its an MoD engine, so there won't have been any cost cutting with the bits. It's obvious that one quadrant had failed long before the rest though.....
  13. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    I shall do that I think. I'm assuming the big-end bolts are reusable..... ?
  14. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    It's been running quite rich judging by the plugs/crowns/valves.
  15. Castor

    S3 2.25 petrol BANG! Help/opinions/yada please?

    Looking at the piston, it seems like one quadrant has been fractured at the top ring groove for some time before the final failure. See the pics below.
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