Need 2 things: Thread chaser and Torque angle gauge

[bmwpower]

Anybody have a good source? Looking to clean out the threads on my metric block/head.

Found an angle gauge at Snap-on:
http://buy1.snapon.com/catalog/item...0&group_ID=980&store=snapon-store&dir=catalog

Not sure if I want to spend this much, but...

Still trying to find a reasonable internal metric thread chaser.

 

[Runum]

Not trying to be a smarta_ _, but aren't internal thread chasers called taps? I have always used a tap to clean up internal threads. I have bought several metric taps, mostly at tool supply shops.

 

[bmwpower]

Not trying to be a smarta_ _, but aren't internal thread chasers called taps? I have always used a tap to clean up internal threads. I have bought several metric taps, mostly at tool supply shops.

From what I've read, they're different. For one, a tap is pointed at the end. A thread chaser is flat (so as to clean the threads all the way to the end of a blind threaded hole). Also, a chaser is designed not to remove any additional metal, which would be a bad thing for obvious reasons.

 

[bmwpower]

More here:

http://www.mondello.com/Pages/Articles/1/1.htm

 

[Runum]

OK I see where you are coming from now. I do agree that chasing a tapped hole with a tap can remove some metal. I have never experienced failure due to this though. I am not sure where you are going to find metric thread chasers. Good luck with your search.

 

[kartracer55]

BMW, I think you have some things confused.

there are three kindsa taps; taper, plug, and bottoming.
A taper tap tapers aabout 6 threads,

A plug tap tapers about 3 threads. The taps you see with points on the end are ususaly made by vermont american and designed for through holes. VA taps are sold under snap on, C-man, and under the VA name.

bottom taps have 1-2 tapered threads at the end. You will want a bottoming tap.


These are all cutting taps, but there are also Thread Forming taps for aluminum and other soft metals. Thread forming taps requiqure different procedures, need a larger hole size, and in general, are a PITA to use

All you need is a bottoming tap. HD and lowes usually dont sell these, so order one from MSC or Enco. They are very handy to have when cleaning or tapping blind holes.

Jim

 

[Runum]

I agree that a bottoming tap would do the trick. Yes, they can remove metal but if used carefully can be used to chase threads successfully. If the blind hole never had a bottoming tap run to the bottom you will definitely remove metal with a bottoming tap. Also be careful about using compressed air when blowing out those blind holes. It's an easy way to get metal in the eye.

 

[plapczynski]

Sears has these...

Sears Rethreader


Almost identical to is the Snap-on one:

Snap-On Rethreader

 

[jstbecauz]

That is the exact torque angle gauge that I have. I think that it cost me about $68.