Air pump delete Questions
Thread Starter
Racer
Joined: Aug 2007
Posts: 260
Likes: 2
From: Pensacola Florida
Air pump delete Questions
Was looking to delete the air pump system in my 86E with cast iron heads and wanted to know specificaly how the injection tubes going into the ports on the exhuast manifold are eliminated ir pinched shut. Also looking for a good eliminator bracket w/pulley.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Mid-America has the eliminator kit.
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
If the check valves (black things on the end) are working properly, you should not have to do anything because they are set up to allow air into the exhaust, not out. But if they don't work or leak, just soak the threads with PB blaster and remove with a wrench. Add a metal threaded cap with pipe sealant from the hardware store and that's the end of that.
The rest of the tubes have to stay though (the ones on the manifolds that is), because they are welded on. Unless you cut them off and weld the openings closed again.
Unlike my brother's Cutlass Supereme with the 307 Olds engine, where the air tubes are simply threaded into the manifolds not welded, allowing for a clean removal and capping with some stainless steel hex head pipe plugs.
The rest of the tubes have to stay though (the ones on the manifolds that is), because they are welded on. Unless you cut them off and weld the openings closed again.
Unlike my brother's Cutlass Supereme with the 307 Olds engine, where the air tubes are simply threaded into the manifolds not welded, allowing for a clean removal and capping with some stainless steel hex head pipe plugs.
Last edited by 86PACER; Nov 27, 2008 at 06:18 PM.
Thread Starter
Racer
Joined: Aug 2007
Posts: 260
Likes: 2
From: Pensacola Florida
If the check valves (black things on the end) are working properly, you should not have to do anything because they are set up to allow air into the exhaust, not out. But if they don't work or leak, just soak the threads with PB blaster and remove with a wrench. Add a metal threaded cap with pipe sealant from the hardware store and that's the end of that.
The rest of the tubes have to stay though (the ones on the manifolds that is), because they are welded on. Unless you cut them off and weld the openings closed again.
Unlike my brother's Cutlass Supereme with the 307 Olds engine, where the air tubes are simply threaded into the manifolds not welded, allowing for a clean removal and capping with some stainless steel hex head pipe plugs.
The rest of the tubes have to stay though (the ones on the manifolds that is), because they are welded on. Unless you cut them off and weld the openings closed again.
Unlike my brother's Cutlass Supereme with the 307 Olds engine, where the air tubes are simply threaded into the manifolds not welded, allowing for a clean removal and capping with some stainless steel hex head pipe plugs.
I am guessing that the exhuast tubes are steel but the parts surrounding the tubes with the bolt holes is cast iron? If this is the case, I will just take off the manifolds, cut the tubes and weld the holes shut. I wont have to worry about inspections here in Florida. I would like to find a newer model RH exhuast manifold with the bolt-on egr tube
so I dont have to bother with that stupid clamp! Thanks guys
