7 Machine
Home / Kawasaki

retapping a sparkplug hole

blue beast2010-08-11 09:23:14 +0000 #1
I know to do this right u should get a reverse one but..... dont have the money for it. when u retap the plug hole does it just cut a grove into the original thread pattern ? mine is only going about 1/4 inch deep then it gets real hard to turn . i can put the plug in by hand for the 1/4 inch then i have to get a wrench . any suggestions? never had to retap a plug hole before or anything really! someone tell me how to do it

I already knoe the size is 10mm x 1.0 pitch
Stogi2010-08-11 09:38:39 +0000 #2
If you put the tap in straight it will "chase" or clean up the threads. It's best to do the with the head off...... but, I have done it with the head still installed without any issues. You can use grease on the tap to help trap most of the shavings.
nmkawierider2010-08-11 09:37:29 +0000 #3
Quote:

Originally Posted by Stogi

If you put the tap in straight it will "chase" or clean up the threads. It's best to do the with the head off...... but, I have done it with the head still installed without any issues. You can use grease on the tap to help trap most of the shavings.

Yeah...most of the shavings...what about the ones that fall into the cylinder?
Bootlegger2010-08-11 10:35:29 +0000 #4
I have done this...you WILL have to pull the head.
N2Otorious2010-08-11 10:13:45 +0000 #5
Quote:

Originally Posted by nmkawierider

Yeah...most of the shavings...what about the ones that fall into the cylinder?

Pray they go out the exhaust port. Really should take the head off.
Bootlegger2010-08-11 09:54:17 +0000 #6
Its a LOT better to just pull the head and do it right...if not. I almost gurantee you will rebuild it...lol. Better to be safe than sorry.
nmkawierider2010-08-11 11:13:58 +0000 #7
And I think if you go to all the trouble of pulling the head, why would you put it back on with bad thresds? Better to replace it.
Injected2010-08-11 12:49:17 +0000 #8
If the threads are ok for the first 1/4 inch, I doubt the remainder of the threads are crossed.

If the threads are crossed at the combustion chamber, they are crossed all the way out I would think.

Reply

Name:
Content:


Other posts in this category