The Water pump debacle thread

[Blknight.aus]

Except that the OD is wrong.

1/4 " is 6.35 mm. Therefore a 6mm thread is .013" smaller in diameter.

Agree re the pitch, but that's not the issue.

so its interference thread locking when you put an imperial bolt into a metric hole...

[numpty]

so its interference thread locking when you put an imperial bolt into a metric hole...

But that wasn't the issue. Your statement referred to a metric 6mm bolt into an imperial 1/4" thread.........an entirely different animal.

[chazza]

so its interference thread locking when you put an imperial bolt into a metric hole...

No - it is stuff up both threads permanently time!

Why the devil wouldn't anybody re-bore the holes on the pump flange with a tapping drill of the correct size and re-tap with 1/4" BSF and do the job properly?

Cheers Charlie

[numpty]

No - it is stuff up both threads permanently time!

Why the devil wouldn't anybody re-bore the holes on the pump flange with a tapping drill of the correct size and re-tap with 1/4" BSF and do the job properly?

Cheers Charlie

x2

[Blknight.aus]

thats easy...

if its already tapped at 1/4 BSF and the threads are corroded/worn away how do you then redrill whats not there to retap it to the original thread size.



And I STILL maintain we need a sarcasm font.

[chazza]

if its already tapped at 1/4 BSF and the threads are corroded/worn away how do you then redrill whats not there to retap it to the original thread size.

Measure the PCD; weld the holes; file or machine flat; mark the new holes and drill them.

I don't understand what your point is. Didn't you advocate screwing an M6 fastener into a 1/4" imperial thread in an earlier post?

[groucho]

Welding the water pump holes on a cast iron block in situ would be a non event in my books. Drilling to next UNF size or helicoil is the way to go.

[groucho]

The rolls Royce repair is a Time Cert used them in Caterpillar blocks / head studs strong as new. Instead of going round in circles why not do it properly





++ TIME-SERT Threaded inserts for stripped threads, threaded inserts, thread repair stripped sparkplug's, Ford sparkplug blowouts, threaded inserts threaded, repair stripped threads, stripped threads, inserts threaded inserts, Ford spark plug repair,

[Scallops]

The rolls Royce repair is a Time Cert used them in Caterpillar blocks / head studs strong as new. Instead of going round in circles why not do it properly





++ TIME-SERT Threaded inserts for stripped threads, threaded inserts, thread repair stripped sparkplug's, Ford sparkplug blowouts, threaded inserts threaded, repair stripped threads, stripped threads, inserts threaded inserts, Ford spark plug repair,

Yes - I want this done properly. I think we do nothing until I understand what to do - this vehicle is precious to me.

[hodgo]

Welding the water pump holes on a cast iron block in situ would be a non event in my books. Drilling to next UNF size or helicoil is the way to go.

__________________________________________________ _____________

I have got to agree with you a helicoil is the way to go cheap, easy to do, quick and as strong as new

Hodgo