Author Topic: meteor thread/tap size (Read 174 times)

chuck172 · « **on:** January 13, 2021, 04:51:48 AM »

Anyone know the thread tap size for the carburator flange on a meteor 272xp cylinder? The threads are just too tight and I'm afraid of cracking the casting.
The screws are Husky OEM 503 49 69-01.

Al_Smith · « **Reply #1 on:** January 13, 2021, 08:45:59 AM »

Most likely M5 .8

Tacotodd · « **Reply #2 on:** January 13, 2021, 09:17:12 AM »

Take one of the carb mount screws to one of the “old school” auto parts stores and they most likely can give you a definite answer to the thread pitch question. Keep in mind, ideally you’d want to use a thread chaser and NOT a regular tap, difference being a tap is for new holes and chaser is to clean up threads. Chaser is just a tiny bit smaller all around.

This is from somebody’s experience in the automotive industry for about 30yrs.

Tacotodd · « **Reply #3 on:** January 13, 2021, 09:21:47 AM »

Also, if you’ve got a spare bolt from one of the carb mounts, you can carefully grind it so as to make your own chaser. Beware, very hard to do on such a small bolt.

Take your time, back & forth, pull out, clean (or rinse), repeat.

Al_Smith · « **Reply #4 on:** January 13, 2021, 12:08:45 PM »

if you are going to chase a hole you'll do better with a spiral point tap especially on aluminum .

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