(LSJ) Cooling mods - Option B + Dual Pass, HE, etc...

[rallyracer]

For those of you building an LSJ and or a Supercharged kit, having an extra bracket welded onto your frame to run an extra coolant tank would be a good idea.


This is a common LSJ cooling mod that uses an extra coolant tank plus a Dual Pass Endplate.

Option B for Dual Pass IC
http://zzperformance.com/ecotec/intercooling/option-b-for-dual-pass-ic.html

ZZP LSJ Dual Pass Intercooler Plate Kit
http://zzperformance.com/ecotec/intercooling/zzp-lsj-dual-pass-intercooler-plate-kit.html

 

[smithvmi]

i looked into this; not sure how much it's worth it. Some manifold drilling and a dual pass end plate are needed. At this point I'm trying to simplify and add lightness. Maybe down the road if I can tell that intake temps are an issue.

Does anyone have experience with Option B on a Cobalt?

 

[AleX1/9]

Seems like the benefits are ease of bleeding, and extra cooling capacity. Downside is more spaghetti/cluster I guess. Could the same thing be accomplished with a larger redesigned primary reservoir?

 

[Adam]

Seems like the benefits are ease of bleeding, and extra cooling capacity. Downside is more spaghetti/cluster I guess. Could the same thing be accomplished with a larger redesigned primary reservoir?

The additional reservoir would only be plumbed to the intercooler, not to the engine or primary reservoir.

For anyone interested in mounting an extra reservoir, I think it would make more sense to go with a universal tank rather than forcing yourself to deal with the awkwardly shaped Cobalt tank. Just get a universal tank and use clamps around the tube frame to mount it.

 

[rallyracer]

It's a pretty simple idea. Install isn't hard. Only 2 new hoses added. Just need an extra bracket to attach the new tank.

This kit has been around for LSJ owners for like 10yrs+.

 

[smithvmi]

Yeah you're right, it's not overly complicated. I guess when I read about taking the cores out and drilling a new bleed nipple hole it just seemed like a hassle. Is that actually necessary?

 

[rallyracer]

Yeah you're right, it's not overly complicated. I guess when I read about taking the cores out and drilling a new bleed nipple hole it just seemed like a hassle. Is that actually necessary?

Buy this and those issues are taken care of already!

http://zzperformance.com/ecotec/intercooling/zzp-lsj-dual-pass-intercooler-plate-kit.html

 

[smithvmi]

I have a dual pass end plate myself, but I don't think that precludes the need to drill a new bleeder line nipple hole into the manifold. (This is the green nipple from which the light blue hose goes to the red coolant reservoir in the diagram you posted.)

 

[rallyracer]

I have a dual pass end plate myself, but I don't think that precludes the need to drill a new bleeder line nipple hole into the manifold. (This is the green nipple from which the light blue hose goes to the red coolant reservoir in the diagram you posted.)

How-to install!

http://www.cobaltss.net/forums/how-...endplate-w-o-removing-your-alternator-274630/

 

[smithvmi]

What I'm talking about is in this step, from ZZPs instructions:

Step 4 : High Pressure bleed line - Modifying the Manifold
There are 2 ways to perform the next step. GM recommends removing the bleeder in the top of the Stock Heat Exchange (shown on the last page of this document). ZZP has proven the best way to completely remove the trapped air is to Drill / Tap / Install a bleeder port into the side of the manifold.

My bad if I was unclear earlier.

 

[rallyracer]

What I'm talking about is in this step, from ZZPs instructions:



My bad if I was unclear earlier.

GM Performance Divison developed the kit for the Race Cobalts in 2004. Powell and his team then installed them and played around with the kits on the race cars and found what worked best.
He tells me you should not be drilling / putting a tap into the manifold. I'll see if I can get a full how to install from him.

Also, if just having a larger tank worked just as well, you'd thought GMPP would have just went that route. Hard to say.

 

[smithvmi]

OK that's an interesting deviation from the ZZP kit instructions. I would be way more interested if I don't need to drill because then like Adam said, I just find a conveniently-shaped secondary reservoir.

Thanks for digging into that.

 

[BAR-AIR]

Just add a simple reservoir I haven't made up my brackets. I'm going to mount two in parallel (they will take up the same space as the donor reservoir) one for the engine cooling system the second for the super charger cooling system.

 

[Lonny]

Be sure to keep add much space as possible between the two reservoirs.

The two systems run at different temperatures. The engine cooling system is around 194 degrees. The intercooler system needs to be as cool as possible, hopefully just a few degrees above outside air temperature.

If they are too close together you will be conducting heat from your engine coolant into your intercooler coolant.

 

[rallyracer]

OK that's an interesting deviation from the ZZP kit instructions. I would be way more interested if I don't need to drill because then like Adam said, I just find a conveniently-shaped secondary reservoir.

Thanks for digging into that.

Powell said "you make ZERO holes in manifold".

He sent me the install link from CED. Powell and Tom at CED have worked together for years. I've met both these guys many times.

http://www.crateenginedepot.com/pdfs/sidekit.pdf

 

[smithvmi]

Ok I'll take his word for it as he's the expert and won't make any holes in the manifold. All I know is that my manifold does not have the nipple I've circled in red in the pictures below from the CED install link. My nipple is where the green circle indicates. That's the only reason I brought up the possible need for drilling into anything.

Are some manifolds different than others?

 

[rallyracer]

Ok I'll take his word for it as he's the expert and won't make any holes in the manifold. All I know is that my manifold does not have the nipple I've circled in red in the pictures below from the CED install link. My nipple is where the green circle indicates. That's the only reason I brought up the possible need for drilling into anything.

Are some manifolds different than others?

I just realized your donor is a Cobalt LS, which could be the issue. The kit was originally designed for the LSJ and the intall guild flows for that engine.

I'll see what John comes back with.

 

[smithvmi]

Yeah, the manifold is something I purchased off eBay. Not sure why the nipple would be in another spot, but it is.

I was starting to think either one or both of us was going crazy haha.

 

[BAR-AIR]

Good Evening,
I guess maybe I am missing something with regards to the secondary nipple for the reservoir. I have the ZZPerformance super charger kit also. It doesn't have the nipple in the red circle above. It does have the nipple in the green circle but my understanding is to put a piece of 3/16" vacuum hose and connect to the MAP sensor?
Actually with my ZZPerformance Kit nothing is even mentioned about adding a secondary reservoir they just ran a "T" in the line for a fill tube with a cap. With my instructions here is my mock up for my air to water intercooler I just ran a remote fill tube with a 13 psi relief cap. (Adam's ZZPerformance Goblin has the same capped "T" line with out a secondary reservoir.
THX, BAR

 

[smithvmi]

This is the zzp h/e? and i'm did you put some rubber hose around U bolts for the mount to that crossmember?

This looks very clean, well done!