Bottoming Tap

Reply Subscribe

Thread Tools

Search this Thread

Feb 23, 2011 | 03:09 PM

mhuppertz

Thread Starter

Registered User

Joined: Sep 2004

Posts: 4,053

Likes: 135

From: Tijeras, New Mexico, 7,000ft up

Bottoming Tap

Anyone have a part number of the bottoming tap I need to put my head studs in? I have the std size 12mm studs.
My head gasket is now leaking anti-freeze all the time. I can't wait.
Thanks,
Mark

Feb 23, 2011 | 03:49 PM

cougar

Registered User

Joined: Apr 2009

Posts: 3,317

Likes: 485

From: alaska

I have always ground my own out of a regular tap. Never had a problem with them.

Feb 23, 2011 | 03:52 PM

mhuppertz

Thread Starter

Registered User

Joined: Sep 2004

Posts: 4,053

Likes: 135

From: Tijeras, New Mexico, 7,000ft up

Quote:

Originally Posted by cougar

I have always ground my own out of a regular tap. Never had a problem with them.

Do you just grind off the end?

Feb 23, 2011 | 03:58 PM

bgilbert

Registered User

Joined: Apr 2005

Posts: 3,253

Likes: 0

From: Terre Haute,IN

I don't have a part number but you will need a 12mm x 1.75 metric bottom tap. NAPA had one in stock when I did it years ago.

Feb 23, 2011 | 04:11 PM

jtamulonis

Registered User

Joined: Apr 2009

Posts: 184

Likes: 29

From: Banning, ca same house 73yrs

Quote:

Originally Posted by mhuppertz

Do you just grind off the end?

Yup, just grind off the first 3 or 4 threads. grind slow to not take the temper out of the tap, and keep the end square with the threads. piece of cake, been doin` it for darn near 60 years.

Feb 23, 2011 | 07:12 PM

cougar

Registered User

Joined: Apr 2009

Posts: 3,317

Likes: 485

From: alaska

Quote:

Originally Posted by jtamulonis

Yup, just grind off the first 3 or 4 threads. grind slow to not take the temper out of the tap, and keep the end square with the threads. piece of cake, been doin` it for darn near 60 years.

That's the way. If you have a tap that's fubared on the end, free bottoming tap.