22 replies to this topic

[MiniLuke]

Oh, just stick your drill in there and have done...... (joke)

[Scott MPI]

I did it with a hand reamer,no way would I do it with a machine reamer on a machine. I clocked the hole(up and down)before pressing the guide in and it's no exactly square to the face.all it will try to do is cut a new hole true to the machine setup,I however would use a machine reamer if I drilled the original hole at the same time,I just did what I know, I was a toolmaker for 10 years

Thanks

Scott

[Wil_h]

Were they honed in the factory?

[Ethel]

Probably not, but the factory has the advantage of being able to specify enough material for finishing to size, and can grind their cutter by the actual size of the guides they're producing by the bucket full.

[Wil_h]

The real argument seems to be that reaming is perfectly acceptable if done correctly; and useless if done badly. rather than it being an unsuitable process per say, that every one has been using for over 50 years on the a-series engine alone.

I suspect that honening can also be done badly and when done badly is not a suitable method.

[l_jonez]

The real argument seems to be that reaming is perfectly acceptable if done correctly; and useless if done badly. rather than it being an unsuitable process per say, that every one has been using for over 50 years on the a-series engine alone.

I suspect that honening can also be done badly and when done badly is not a suitable method.

Thank you! Thats what ice been saying all along

[MRA]

Using any tool incorrectly will always yeild poor results.

Except for one small point....

Reaming will neither be successful or adequate in this situation, I agree if enough material was left in the guides then it would be, however there is simply not enough material to get a decent cut....

Take a look in your tool boes... how many of you have screwdrivers that have been used as chisels or levers ??? wrong tool for the job just the same as using a reamer is the wrong tool for classic Mini valve guides

[Wil_h]

Using any tool incorrectly will always yeild poor results.

Except for one small point....

Reaming will neither be successful or adequate in this situation, I agree if enough material was left in the guides then it would be, however there is simply not enough material to get a decent cut....

Take a look in your tool boes... how many of you have screwdrivers that have been used as chisels or levers ??? wrong tool for the job just the same as using a reamer is the wrong tool for classic Mini valve guides

I understand the argument, but the reality is that reaming guides has been done since the dawn of the engine. Now it may be true that it is not the best way but history tells us that it is in fact sucessful and adequate.

Not sure what your point is about the screwdriver. As far as I can see it makes your argument look stupid. If you use a screwdriver as a lever and you get something levered successfully and adequately, then it was the right tool. In most cases a screwdriver is a perfect lever.

To add to this, how may people on here have a set of leavers in their tool box?