I made a few mistakes i was gonna run full emissions but then i thought ahhhh F Uck it. So i took off the compressor,and smog pump. I bought edelbrock TES headers w/ air tubes on it, So how could i plug up the air tubes, Anyone know the fitting size on the air tubes....... please help ASAP

 

hey what my brother did oh his headers (he didnt have the edelbrock ones but how cares)after he took off all his emmission crap he took a pair of pilers and crimped them shut and then took his acyetalen torch and brazed to tops of the tubes closed and he didnt have the tubes on the headers he made his own so like if u have one for each tube just cut it to like a inch or so above the header and do what my brother did. and he hasnt had any prolems with them tryin to leak or anything becuz the brazin rod makes a great seal. so i dunno if u want to try that. later

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mods to car
new ignition system, edelbrock intake,600 cfm q-jet,th-350 tranny, used black interior, grant stering wheel, accel plugs and wires, hookercat back, b&m shifter, emmission delete package, computer delet package and soon ac delete and in future-- hooker sump comp headers, posi rear, drag slicks and all new rims probably weld rims, line lock, 8 point roll cage, strut tower brace, drag shocks, sfc, new edelbroc 600 carb, nitrous and a weiand supercharger or a 350 or 400 block

 

well i dont want to torch the tubes cause maybe one day i might want to go back to full emmissions, thanx anyway anyone else

 

I just put the valves on the ends of the tubes like they should be with the emissions nothing leaks because they need vacum to open so just throw on the valves and your done.

 

I believe the fitting size is 1/2" NPT. You can use 1/2" pipe caps available from most any hardware store to block them off.

 

Go to Home Depot and buy a standard pipe endcap for each tube. It's either a 1/2" or 1", I can't remember (think it's 1/2). They're cheap and thread right on the tubes. That's what I did.

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray

 

Same here got mine at Ace Hardware

 

The size is 1/2". Go to the hardware store, bring your stock check valves for reference, and match them to pipe caps. I've had mine on for a year without any problems whatsoever. It seems like a waste to ruin a pair of headers by crimping and brazing. you can buy headers without AIR tubes if you really want to totally ditch the AIR...they're cheaper too. It's probably a good idea now to drop your cat because it clogs easier without the AIR system. What I did was weld flanges on my cat and a straight pipe so I can bolt on the cat when emissions time comes and have the pipe on the rest of the time. I hope all goes well, my check valves were a real bitch to get off.

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"Though I cruise through the valley of Rice I shall fear no turbo, for torque art with me."
--Cullan Hooley
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1985 IROC-Z w/T-tops, 305 out and 350 L98 TPI engine in, Hooker Super Comp Headers, 3" Hooker Super Comp Cat-Back, Dropped Cat, Rebuilt TH700R4 with Shift kit, 2,800RPM Torque Converter, 3.73 Richmond gears, Auburn posi differential, Accell SuperCoil, Accell 8mm racing wires, BBK AFPR, Homemade Ram-Air (thanks to askulte), MAF screens removed, Dropped A/C, Dropped A.I.R, TB coolant bypass, Hurst Dual-Gate Shifter, SLP Air Foil, K&N filters, Holley performance fuel pump, Spohn Subframe Connectors, Re-located Spohn Lower Control arms, LT1 cam, 150 shot of nitrous, and more to come.

 

I cut my AIR pipes off, ground the inside and outside of the tubes completely off (those things have to inhibit exhaust flow!! They stick down into the header tube like an inch!!), and welded the holes shut. I retouched the welds to make sure they wouldn't be inhibiting flow....... My car will never have to pass emissions again so I really don't give a $hite about them....

EDIT: They came with the car as well, so I wasn't hacking up a nice new set of headers I just paid good money for.....

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

[This message has been edited by Matt87GTA (edited October 19, 2001).]