Evap/charcoal canister relocation (1 Viewer)

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

alia176

SILVER Star
Joined
Aug 21, 2003
Threads
836
Messages
16,377
Location
Tijeras, NM
This is a must do if you want some premium space freed up on the driver side wheel well after deleting the ABS. All credit belongs @TYM4FUN who led the way of sticking a GM evap canister under his rig. I did a modified version of his project.

Go to the junkyard and pull off one of these evap canisters that are under lots of Tahoes, trucks, etc. Try to grab one with the pre-formed plastic tubings from GM so that you can use their plastic barbed fittings after you chuck their tubing.

I installed mine under the driver floorboard, right to the slider outrigger. I have a sub tank which prevented the installation of the evap on the rear cross member like Paul did. The unit came with its own bracket so there's nothing to it really. I welded up a simple angle bracket to the slider outrigger and bolted the evap canister bracket right to it.

Our charcoal canister (CC) has a "tank" line from the fuel tank, and a "purge" line that goes to the intake manifold. In the picture you'll see how I disrupted the "tank" line from the fuel tank on its way to the engine bay CC tank port. The part from the tank now goes into the "tank" line of the evap canister. You'll need to do an adapter from Toyota dinky hose to GM gigantic hose. GM uses a small nipple on their purge line and this needs to 5/16" ID. I believe the same 5/16" ID hose will slip over the OEM hard piping.

The second part of the "tank" line is now connected to the "purge" line on the evap canister. This tank line goes straight to the area under the ABS and points upward. As Paul showed on his build thread, just use a small tubing bender to bend the "tank" rigid line in the engine bay so that it points to the intake. I used the same rubber hose from my original CC to connect this hard piping to the intake.

The third outlet out of the evap canister is going to the atmosphere, and in the picture you'll see GM has a solenoid valve in that circuit before the expelled air goes into a round filter. Some day I might install this round filter but probably not. The expelled air out of my evap canister goes into a hose then into atmosphere, same thing as Paul did. The solenoid valve is normally open but I don't need it.

Well, that's about it. I waited to put some miles and dirt on the evap canister before taking the shots, otherwise, it just blends in too well.

1756231589866.webp

1756231650042.webp


1756231660177.webp


Now I have room for a dual pump ww reservoir plus two catch cans in this space.
1756231676779.webp
 
Last edited:
Under the 80, the tank line is this line with an outer hose type of protection. I simply separated the two, then cut it and bent it using a 9mm deep socket. It was already bent out from the other two from the factory, so I didn't have to bend it too much.

1756231787470.webp


1756231916089.webp

1756231798050.webp


I'm now pointing to the newly bent line that used to be the "tank" line but now it's the "purge" line from the evap.

1756231810831.webp
 
Nice!
 

Users who are viewing this thread

Back
Top Bottom