OK to use pennies to plug AIR holes in manifolds?
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)?
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)?
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.
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.
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.

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.
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.
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.
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.
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.
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.
I admit, the plugs ARE inexpensive, unlike the custom correct pitch plugs available.
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.
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.
IMHO do it the right way or don't even bother. I would find the M22 plugs and use those.
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.
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.
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.
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.
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.
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.



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