very odd

[Reginald JohnsonParticipant @reginaldjohnson52775]

making some 8mm pins i found some required stock faced off and found it was drilled through whole length 13 inches with a1.9mm hole any ideas please

[Reginald JohnsonParticipant @reginaldjohnson52775]

[Speedy Builder5Participant @speedybuilder5]

what material ?

[Reginald JohnsonParticipant @reginaldjohnson52775]

sorry to say looks like and machines like mild steel an other thought i may got it from retired enginner ex R,R

[bernard towersParticipant @bernardtowers37738]

High pressure fuel pipe, old direct injection feed pipes were like that.

[not done it yetParticipant @notdoneityet]

Posted by bernard towers on 20/05/2023 18:54:41:

High pressure fuel pipe, old direct injection feed pipes were like that.

Spot on, I expect. Such high pressure fuel lines would have started as straight tubes.

[Howard LewisParticipant @howardlewis46836]

All high npressure pipes that we are likely to encounter will have started as straight pipe, whether cold drawn or Bundy.

The standard sizes doe 6 mm OD [pipes were 1.5, 1.75 and 2 mm.

(Sometiomes a source of confusion when nthe same pipes shape, but different bores wwerr used on naturally asp;irated, turbocharged, and charge cooled engine! )

If the donor was ex R -R, he was probably ex Oil Enginme Division at Shrrewsbury.

Howard

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