Block off plates
Thread Starter
Drifting
Joined: Feb 2005
Posts: 1,298
Likes: 21
From: east taunton ma
Block off plates
Why do some people say not to use block off plates for A.I.R flange on headers? Is it easy to cut and weld up the flange hole while the headers are mounted on the car?
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
Curious about those comments. Why don't you contact the maker of your headers or proposed headers. If your headers have an AIR connection and you don't plan to use the AIR system obviously you have to do something. This would have been better posted in Technical not General. Obviously if there is an AIR connection using a block off plate would provide a little turbulence in that location but not sure how much that would affect exhaust flow. Doubt if it is much.
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
On my car I have LG street headers. In the course of modding my engine I have had the air pump system deleted from functioning on my engine due to the fact I had problems with the pump. Unfortunately I've been advised to keep the parts connected to the airpump connections on the headers. The reason is supposedly if the fittings are just left free standing with nothing connected to them, they can vibrate enough to crack and leak. I really would like to remove all the garbage in my engine compartment too, but I don't know if I should take a chance and disconnect everything and see what happens. I don't want to have to remove the headers to weld up the holes left by cracked air pump fittings. Anyone have suggestions?
Le Mans Master
Joined: Mar 2011
Posts: 6,835
Likes: 302
From: Columbia SC
On my car I have LG street headers. In the course of modding my engine I have had the air pump system deleted from functioning on my engine due to the fact I had problems with the pump. Unfortunately I've been advised to keep the parts connected to the airpump connections on the headers. The reason is supposedly if the fittings are just left free standing with nothing connected to them, they can vibrate enough to crack and leak. I really would like to remove all the garbage in my engine compartment too, but I don't know if I should take a chance and disconnect everything and see what happens. I don't want to have to remove the headers to weld up the holes left by cracked air pump fittings. Anyone have suggestions?
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