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Old 04-02-2010, 09:03 AM   #1
Mark42
 
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Adding Zerc fittings to poly bushing....

Got the poly bushing from Summit Racing the other day, so now I can install the front sway bar. Ordered just the bushing, not the entire housing. While its apart, I want to add zerk fittings to each bushing assembly so they can be greased. Thinking of drilling a 1/8" hole through the poly bushing. Think its too big? Maybe 3/32?

I know it's not a big deal, just asking.
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Old 04-02-2010, 09:19 AM   #2
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I think 1/8 is probably fine.
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Old 04-02-2010, 09:46 AM   #3
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i have an end link for a late model ram 1500 sitting on the bench and the pre drilled but not tapped hole seems to take a 7/32" bit. hope that helps
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Old 04-02-2010, 01:00 PM   #4
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the small zerk fittings are 1/8 npt, so you need to drill the proper hole, which is not 1/8", for somereason i think its "R" but i have to check. Just make sure the threaded part of the zerk does not come in contact with the sway bar

Checked, it is an "R" bit size

Last edited by //<86TA>\\; 04-02-2010 at 01:02 PM.
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Old 04-02-2010, 08:11 PM   #5
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Quote:
Originally Posted by sweetbmxrider View Post
i have an end link for a late model ram 1500 sitting on the bench and the pre drilled but not tapped hole seems to take a 7/32" bit. hope that helps
Quote:
Originally Posted by //<86TA>\\ View Post
the small zerk fittings are 1/8 npt, so you need to drill the proper hole, which is not 1/8", for somereason i think its "R" but i have to check. Just make sure the threaded part of the zerk does not come in contact with the sway bar

Checked, it is an "R" bit size
Thanks for the specs, guys. It helps me a lot. I think the zerks I have are 1/8 npt, but will have to double check.
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Old 04-02-2010, 08:56 PM   #6
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It's a q bit. I just did a 1/8 barb fitting the other day. Use a q bit and npt tap
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Old 04-03-2010, 05:13 PM   #7
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It's a q bit. I just did a 1/8 barb fitting the other day. Use a q bit and npt tap
im sure Q will work, its only a tiny bit smaller, but its defiantly supposed to be R

http://www.korit.com/tapndrill.htm

and i have the R bit and 1/8npt tap, just used them the other day
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Old 04-04-2010, 09:32 PM   #8
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I don't have letter bits, just number. Had to look up the letter sizes to convert to number. But I do have the taps, so it worked out just fine.
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