how best to plug the Air injection tubes

[joe buckle]

i've got a set of 2L heads for my 914 and need to know the best way to plug the air injection hole on the heads

Thanks

Joe

[RustyWa]

Try these...

'75 2.0L heads

-and-

http://www.914club.com/bbs2/index.php?act=ST&f=2&t=474&

[skline]

The one for the Pelican site didnt work but the other one did. I went to the local hardware store and bought 4 small I think they are brass or copper pipes about 2 inches long and 4 matching caps to go with them and put those in the holes. However, I hear a very strange noise when I accelerate now and I am thinking I should have filled those little pipes with something to make them solid. Will it make any difference having the air space in the tubes? Could this be the noise I am hearing? Any help would be great. I am not driving it because of this as the engine is all fresh.

[mike95125]

I used 10mm valve adjusting screws. These make a more uniform surface on the inside of the exhaust chamber. If you just plugged it then you likely left a long pit that acts like a sort of beer bottle when you blow over the top of it. Just an idea.

[jc9]

i used pipe plugs (male) with allen head. they are tapered so they will bottom out. they are the same size as the pipes you bought. only a few bucks for 4. jc

[Kenny Powell]

Originally posted by jc9
i used pipe plugs (male) with allen head. they are tapered so they will bottom out. they are the same size as the pipes you bought. only a few bucks for 4. jc

JC, I agree with your method that's the way mine were done!
best method I've seen yet!

[SteveStromberg]

914 caliper plugs are the way to go
Caliper Plug, 914-4 All Inner Cap, Each
PEL-BRC-02 $5.00 you will need 4

[Kenny Powell]

anymore examples? Bump

[skline]

I had a guy come over the other night and he is going to make me some plugs from solid stock and thread them so they will bottom out and not extend into the valve area. Thanks for all the tips and advice.