Left Side Dual Battery Tray and EVAP Canister Placement

[1-ton]

My 1991 Chevy V3500 did not come with a dual battery option, but a donor parts truck I have did. I took the Left side battery tray out of it to install in my 91 V3500. The problem I am having is that the EVAP canister is mounted in the same holes as the Left side battery tray mounts to.

I know there has to be a truck that came with a dual battery Left side / Right side tray option and an EVAP system. Does anybody have a description or picture of where an EVAP canister bracket mounts, and also the length and diameter of the EVAP canister, a dual battery option truck came with?

 

[dyeager535]

I'm going to watch this. I added dual battery trays at one point, but didn't install an evap canister. Instead, I used the battery tray to hold my air filter assembly.

Had not thought about how this is going to affect EVAP placement.

Did not read the thread, but I believe this is a pic of an '89:

here is the thread that it was linked in http://www.chevyk5blazer.com/forums/archive/index.php/t-10355.html

Perhaps the change to the core support helped facilitate that setup? I believe all or a majority of the "new" front end trucks had the canister mounted like that, I recall them being in that location.

 

[1-ton]

Thanks for the reply as always. You are definitely one of the sharper people on this web site. The picture you posted was what I was thinking I remember how an EVAP canister could be mounted on a GM product. I found an EVAP canister bracket I think would probably do the trick. These can still be had brand new a Chevy dealerships for about $45.00 to $50.00. I should be able to figure out a way to mount it to my radiator support.

 

[dyeager535]

Thanks for that much better pic. Didn't realize how the bracket bolted to the core support, I remembered the clamp, just didn't realize there was that much more holding it in place.

Should be a ton of these available even on here, so many people yank those things off. Only issue I foresee is that GM used about a million evap canister designs, and I have no idea what got what. I'd have to go look at my '87 K5, but they probably had a relatively simple setup, I recall only a line in and line out, where some of the canisters had multiple fittings, valves on the canister, etc.

 

[1-ton]

I ordered an EVAP canister bracket with the same part number as the one pictured above, but it was brand new. I ordered it from Chevy Parts Central for $16, which included shipping. The part number is 15567662, and fits all GM C/K series trucks from 1988 to 1996. These year of trucks also use the same EVAP canister as my old 1991 V3500, so I know it will fit my EVAP canister.

 

[skunked]

I had the the dual battery setup with the evap canister on my 84 C20 Diesel cab. Not sure if have any pics but I have the canister in my scrap pile.

 

[1-ton]

The place I ordered the EVAP bracket from cancelled the order because the item is discontinued, but I am glad they did cancel the order because upon closer inspection I found out that my trucks EVAP bracket is the same bracket as the one I ordered. My trucks EVAP bracket is a 2-piece bracket, and if I remove the EVAP strap part of the bracket from the mounting hole bracket, then my bracket is the same one as I ordered, which is also pictured above.

 

[rjfguitar]

I had the same problem when I put dual batteries in my K5. I thought about it long and hard, and then threw the evap in the garbage. (I know, no help )

 

[1-ton]

I had the same problem when I put dual batteries in my K5. I thought about it long and hard, and then threw the evap in the garbage. (I know, no help )

If the EVAP system had no real purpose at all, I would do the same, but the EVAP system is how my fuel tanks safely vent gasoline fumes away to a safe spot so my truck does not catch on fire.

 

[dhcomp]

I mounted my Canister to the side of the battery tray. My build may have a poc

 

[nutt7]

My 89 has the bracket you pictured. I put it lower and right next to the radiator, but I'm not sure if that would be enough for your tray. It's easy to relocate though.

Edit: if you need a pic, I can take one but it looks to be in a very similar place like that pic dyeager posted

 

[Keitha]

on my 1991 Suburban: I bolted the EVAP to the auxiliary battery tray - the bolt holes lined up perfectly - almost like it was designed that way.

 

[1-ton]

I will look into the mounting spots mentioned. I am almost ready to mount the battery tray in now, and the radiator support a little later.

 

[BEAR VALLEY]

Thanks for the reply as always. You are definitely one of the sharper people on this web site. The picture you posted was what I was thinking I remember how an EVAP canister could be mounted on a GM product. I found an EVAP canister bracket I think would probably do the trick. These can still be had brand new a Chevy dealerships for about $45.00 to $50.00. I should be able to figure out a way to mount it to my radiator support.

I keep a supply of flat stock aluminum around if in case I need to make a strong light weight bracket. It also comes in strips almost any size and thicknesses . Easy to shape cut and drill. Plus it also looks good.