LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

OK to use pennies to plug AIR holes in manifolds?

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Old Jul 3, 2003 | 12:36 PM
  #16  
Hyperspeed97z28's Avatar
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NAPA defiently has them man.....
Old Jul 4, 2003 | 11:16 PM
  #17  
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Re: OK to use pennies to plug AIR holes in manifolds?

Originally posted by PatriotTA
I can't find ANYTHING to plug the holes left in the exhaust manifolds when I removed the air pump. I heard someone dropped pennies in the holes and screwed the original fittings back into the manifolds. That makes a lot of sense to me, has anyone had any problems with that (or see anything wrong with that, besides being ghetto)?
Hmmm, interesting idea. I gotta admit, it makes more sense than putting a metric plug in an english thread. It's amazing how inaccurate internet info can be accepted without question.
Old Jul 4, 2003 | 11:43 PM
  #18  
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I used the M-22's and they screwed in better than the stock fittings... not too tight, not too loose. Included a thin copper gasket, for a good seal. $2 each plus 50-cents for the gaskets.
Old Jul 5, 2003 | 12:34 AM
  #19  
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Re: Re: OK to use pennies to plug AIR holes in manifolds?

Originally posted by arnie
Hmmm, interesting idea. I gotta admit, it makes more sense than putting a metric plug in an english thread. It's amazing how inaccurate internet info can be accepted without question.
Inaccurate? Yes. Functional? Yes

But you are right, the M22 plugs aren't exactly the correct size but its darn close. I managed to get mine in 5-6 full turns which was plenty to seal off the hole.

Granted a plug the correct size would be preferable but I doubt you could come up with anything for <$5ea.
Old Jul 5, 2003 | 07:44 AM
  #20  
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Re: Re: Re: OK to use pennies to plug AIR holes in manifolds?

Originally posted by Soma07
Inaccurate? Yes. Functional? Yes

But you are right, the M22 plugs aren't exactly the correct size but its darn close. I managed to get mine in 5-6 full turns which was plenty to seal off the hole.

Granted a plug the correct size would be preferable but I doubt you could come up with anything for <$5ea.
Agreed!

But for even less, (pennies) you can use the oem, correct fit tubing fitting/nut with a short section of the oem tube, along with the 'small change' and seal on the bottom of the fitting as originally designed. I like the idea.
Old Jul 5, 2003 | 09:29 AM
  #21  
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M22 Drain Plug, Looks GREAT, not ghetto.... I got mine turned down lock tight, put rtv along the threads, tighten down. BOOM, no problems 3 months now.
Old Jul 5, 2003 | 09:51 AM
  #22  
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I used a nickle ( i was feeling rich ) to close the hole on the intake duct to the air system Expoyed it right on and still had enough to fix the ding in my surfboard
Old Jul 5, 2003 | 10:08 AM
  #23  
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Originally posted by Hyperspeed97z28
M22 Drain Plug, Looks GREAT, not ghetto.... I got mine turned down lock tight, put rtv along the threads, tighten down. BOOM, no problems 3 months now.
Happy that your method worked for you. Not ghetto? 'Spose it depends on your backround. These are the kinds of things/mods that cause engineers to cringe and shake their heads. Locked down tight..., why did you need the rtv? The oem relies on sound engineering and correct application of (in this case) fittings to do the job of sealing. They find no need to use additional sealers as may be necessary when using cross threaded plugs. But, as I stated at the top, happy you are satisifed with the method you implemented. 'Spose that is what counts, being happy with the results. I admit, the plugs ARE inexpensive, unlike the custom correct pitch plugs available.
Old Jul 5, 2003 | 10:41 AM
  #24  
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A good friend of mine recently did this 'Penny' fix on his AIR openings (Edelbrock LT1 Headers). The single penny melted when he went and made some passes at the local 1/8th mile. The multiple/stack of pennies sounds like a more durable version.
Old Jul 5, 2003 | 11:27 AM
  #25  
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I used a penny (actually a stack of pennies, cuz my headers had the wrong thread). Kinda glued em in there with some red sealant. Then I cut the flares off the ends of the original AIR tubes so I could get the nuts off em. Screwed those down into the bungs and the pennies ain't goin nowhere.
And it is craftsmanship like that that give us all the "grease monkey" and "gearhead" name.

IMHO do it the right way or don't even bother. I would find the M22 plugs and use those.
Old Jul 5, 2003 | 02:42 PM
  #26  
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Originally posted by dave1w41
And it is craftsmanship like that that give us all the "grease monkey" and "gearhead" name.

IMHO do it the right way or don't even bother. I would find the M22 plugs and use those.
The M22 plug is really NOT THAT HARD to find. What is the big issue here?
Old Jul 5, 2003 | 05:01 PM
  #27  
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PatriotTA, do you still want that 93-94 Y-Pipe from me? If you do come and get it, you can have the plugs out of my stock manifolds.
Old Jul 5, 2003 | 05:48 PM
  #28  
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It's not that hard. The reason Napa is saying they don't have it because they are not about to go through like 100,000 auto parts to find you an M22 plug. They need a part number to find this stuff. So... this is the car I used to get the right plug:

Nappy!

Vehicle: 1995 >> BMW >> 530i >> 3.0 L 2997 CC V8 DOHC


Don't forget to use a thread locker. I was driving down the highway one day only to hear a crazy *** sounding exhaust leak. The drivers side plug actually came out, luckily it didn't fall to the ground, it got wedged between the manifold and the head. But anyway, you get the idea, use thread locker! The heat will losen them.
Old Jul 7, 2003 | 07:12 AM
  #29  
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Talking

Originally posted by dave1w41
And it is craftsmanship like that that give us all the "grease monkey" and "gearhead" name.

IMHO do it the right way or don't even bother. I would find the M22 plugs and use those.
But technically a M22 plug isn't the "right" way either
Old Jul 7, 2003 | 08:38 AM
  #30  
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Half the stuff we do to emissions equipment is not done the right way. Cap this, plug that, but if you get no SES and it works who cares.



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