Emissions delete
Thread Starter
Heel & Toe
Joined: Apr 2005
Posts: 19
Likes: 0
Emissions delete
I just purchased an 81 that has not been driven since 1996. The previous owner half removed the emissions system and the vacuum lines. Is there an emissions delete walkthrough? I tried searching but couldn’t find much. I’ve gotten the car running but the pipes on the top of the manifold just pumped exhaust into the garage and I want to get this thing going.
Race Director
Joined: Mar 2017
Posts: 11,907
Likes: 4,480
From: Virginia
You'll need to plug the A.I.R. tubes, or replace the 81's shorty headers.
After that, all you really need for vacuum hoses are:
Power brakes
Distributor advance
PCV
Evap canister
Headlights and HVAC
EDIT: Also, a vacuum line to the automatic transmission
Much of the rest of the mess is for cold starts and bandaids for emissions.
Last edited by Bikespace; Jan 31, 2019 at 07:47 PM.
Thread Starter
Heel & Toe
Joined: Apr 2005
Posts: 19
Likes: 0
You'll need to plug the A.I.R. tubes, or replace the 81's shorty headers.
After that, all you really need for vacuum hoses are:
Power brakes
Distributor advance
PCV
Evap canister
Headlights and HVAC
Much of the rest of the mess is for cold starts and bandaids for emissions.
Thanks i I guess I really just need to delete the air since the smog pump is missing. What do most people plug the AIR with?
Race Director
Joined: Mar 2017
Posts: 11,907
Likes: 4,480
From: Virginia
https://www.rickscamaros.com/camaro-...1967-1981.html
More explanation here:
https://www.corvetteforum.com/forums...old-plugs.html
This was in my 80, which featured the last year of the cast iron exhaust manifolds. Your 81 has shorty headers. I don't know that the holes are the same, but I bet they are. I'd check, though. You can also weld the holes closed.
Le Mans Master
Joined: Sep 2002
Posts: 5,235
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From: Myrtle Beach SC
I’m only wanting to delete since half is missing and I’d like to see if I can keep it running without breathing exhaust
Le Mans Master
Joined: Aug 2017
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From: Cool Northern Michigan
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