Tap and Die
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TECH Regular
Joined: Jun 2004
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From: Houston, Tx
Tap and Die One of the 10mm bolts that holds the AIR pipe to the exhaust manifold is slightly damaged. I'm sure the internal threads in the exhaust manifold have issues too. Anyway, I picked up a Craftsman metric 19 piece tap die set. I was playing around with the bolt, and it appears it fits snug into the 9mm X 1.25 die, and is too loose in the 10mm dies.
1) how do I know if I'm using the right tap/die for this bolt?
2) should a 10mm bolt fit in a 9mm X 1.25 die?
I want to clean up the threads on the bolt and the exhaust manifold, but wanted to check here first before I mess something up. I've not done this before, so any advice is greatly appreciated.
Thanks,
MrEddie
1) how do I know if I'm using the right tap/die for this bolt?
2) should a 10mm bolt fit in a 9mm X 1.25 die?
I want to clean up the threads on the bolt and the exhaust manifold, but wanted to check here first before I mess something up. I've not done this before, so any advice is greatly appreciated.
Thanks,
MrEddie
Thread Starter
TECH Regular
Joined: Jun 2004
Posts: 418
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From: Houston, Tx
The kit does have a 8mm X 1.25. I tried to thread the bolt into the die just using my finger, and it met cosiderable resistance. Is this normal? I know I need to put it in a vice and use some lubricant (turn 3/4, back off 1/4, repeat) when I actually get on it. Thanks for the quick reply!
Thread Starter
TECH Regular
Joined: Jun 2004
Posts: 418
Likes: 0
From: Houston, Tx
I went to Home Depot and the bolt threads perfectly into the 8M X 1.25, as stated above. However, the 8M X 1.25 die does not screw on easily. Should I pick up a rethreader (repair existing threads) instead of using a tap/die (cuts new threads)? Thanks!
Last edited by MrEddie; Jun 5, 2005 at 10:10 AM.
