First you need to get your dualpass endplate. You can either mod the one you have or buy one. I bought mine from Over The Top Performance.
It is required to remove the S/C and intake manifold to install the endplate.
You need to remove the seven(7) bolts that hold the endplate to the manifold and the endplate pops off.
The cores are orginally positioned like this:
You have to swap the top two cores because they are directional. The top and bottom cores become the inlets to the intake mani and the two center cores become the outlets from the intake mani.
The cores take some elbow grease, but they just pull out. I also gave mine a small slap to reseat them back into the manifold. Be sure to swap the o-rings from the old endplate onto the new endplate.
Then just put the new endplate on and retighten down the seven bolts.
Then sit back and enjoy cooler intake temps. My manifold wasnt on my car so it took me less time to install it that others, but i was all done in 10-15 minutes.
Here is a plumbing diagram that i grabbed of Cobaltss.net that shows the proper way to plumb it.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
are there 4 small o-rings on the endplate for the cores? i think one of mine may be leaking a little.. did you get the option B kit with the plate or are you even using a second reservoir?
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
Yea, there are o-ring seals at the end of each core. You can see them on the paper towel in the 1st pic.
I dont have a 2nd reservoir yet. I need to do alittle more research as to my options first.
Edited 1 time(s). Last edited Thursday, February 26, 2009 9:29 PM
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
Tinkles wrote:Yea, there are o-ring seals at the end of each core. You can see them on the paper towel in the 1st pic.
I dont have a 2nd reservoir yet. I need to do alittle more research as to my options first.
the option b kit kinda goes with the dual pass i guess you could say, comes with the hoses and extra reservoir, etc. check out crate engine depot or zz performance, it probably says more there.
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
The only thing i would need is the extra reservoir, but i have to figure out where to mount it and what will work. Im moving a few items around under the hood, so i'll have to see what space i have.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
What does the OTT kit come with?
Just the bare plate with the 3rd "neck" installed. Pic:
I reused the orginal o-rings and seals.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
looks like they just tapped a stock one and welded a nipple on..
this one is from GM, looks way better quality IMO, but is also $250+
how much did you pay for that one?
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
I relocated my battery to make room for the option b tank
evilmonkitar wrote:looks like they just tapped a stock one and welded a nipple on..
this one is from GM, looks way better quality IMO, but is also $250+
how much did you pay for that one?
Thats all the dualpass is. You drill a hole and weld on a fitting for another nipple. But the reason i didnt go with GM is that the OTT plate is only $105 and there is a $100 refundable core charge. So the over all cost is cheaper and after they receive the core, their's cost %50 less than GM's. The welds are very nice on mine and i am not dissapointed at all with the quality.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
lookin at it again. i think i have my cores the wrong way or my pump is the wrong way or both. good grief.
i need to get my hoses rerouted, etc. thanks for the thread.
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my carDomain updated 8/2/08 Forged B-day!
Tinkles wrote:evilmonkitar wrote:looks like they just tapped a stock one and welded a nipple on..
this one is from GM, looks way better quality IMO, but is also $250+
how much did you pay for that one?
Thats all the dualpass is. You drill a hole and weld on a fitting for another nipple. But the reason i didnt go with GM is that the OTT plate is only $105 and there is a $100 refundable core charge. So the over all cost is cheaper and after they receive the core, their's cost %50 less than GM's. The welds are very nice on mine and i am not dissapointed at all with the quality.
so its pretty much $5? nice. how much was shipping? i wasnt sure about the quality just from the picture but if you say its good then cool. maybe ill look into that soon then. an idea i had for the option b tank was having my intake go off the TB down under the battery and put the tank behind the battery since i dont want to relocate mine. im taking my cruise control module out and am going to attempt to fab some brackets to hold my weapon R catch can..
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
Here are pics of the welds.
The cost is $105 + $100 core charge + shipping = $220ish total for mine. So in the end its half the cost of the GM endplate.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
oh ok wasnt sure on the core thing, i thought it was 205 then you get 100 back for hte core but it sounded like it was 5 bucks lol. zz performance has that too, 99.99 after you send them the core, its a 100 core from them too.
so do you think this is a worthwhile upgrade or do you think its minor and can be passed over?
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
I got mine from zzp. The difference is the fitting that goes on the manifold. ZZP gives you a plastic fitting. I think i'm going to replace that with a SS fitting, it shouldn't be too expensive. ZZP also gives you 3 hose clamps, a T fitting and about 2 feet of clear hose.
Looks good. The only discrepancy I can see is that GM has the flow of coolant (i.e: core orientation) reversed from what you have described. (Stg.3 Cobalt setups).
I would be VERY INTERESTED to know what your IAT temperature drop is at a steady highway cruise with the coolant flowing this way.
At 70 mph mine will drop 27F on a 60 day.
if im reading that install manual from that link right, it looks like you did it backwards tinkles, says the middle is the inlet, the cores with the big opening go on the top and bottom, the ones with the 'orifice' openings in the middle. at least thats what i gathered from reading that manual.. how long did it take to do btw? big mess with coolant when you were taking the manifold out?
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
evilmonkitar wrote:if im reading that install manual from that link right, it looks like you did it backwards tinkles, says the middle is the inlet, the cores with the big opening go on the top and bottom, the ones with the 'orifice' openings in the middle. at least thats what i gathered from reading that manual.. how long did it take to do btw? big mess with coolant when you were taking the manifold out?
i was thinkin the big holes are the inlet and it forces it thru to the smaller holes (outlet). found this on
css
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my carDomain updated 8/2/08 Forged B-day!
s1lver_N1p wrote:
i was thinkin the big holes are the inlet and it forces it thru to the smaller holes (outlet). found this on css
That's the directions that i followed.
evilmonkitar wrote:if im reading that install manual from that link right, it looks like you did it backwards tinkles, says the middle is the inlet, the cores with the big opening go on the top and bottom, the ones with the 'orifice' openings in the middle. at least thats what i gathered from reading that manual.. how long did it take to do btw? big mess with coolant when you were taking the manifold out?
Tinkles wrote:My manifold wasnt on my car so it took me less time to install it that others, but i was all done in 10-15 minutes.
Trevor Mullins wrote:
kind of like a screwed up kids sing along
pete the anal monkey lived in my bum..............
best epiosode of barney ever lol
I setup mine differently than the diagrams they posted however I read that thread when I was doing the dual pass mod. I felt it was more important to get the hot fluid out then to get new stuff in.
Mine has the two center intercoolers cores set to be IN then the two outer cores are are the OUT. I also set it up so the reservoir has a separate line going to it for each hose. I know it works because both lines have a constant flow that I can see.
I don't really know which was is better but either is certainly better than the stock setup.
12.770 @ 111.99 Intercooled Eaton M62
^What resivoir did you use? I have trouble with the Cobalt one being too small to make up for expansion and contraction of fluid during cold weather here as that creates the greatest variation in temp.
Anybody ever measure their temp drop/rise at cruise when switching the pump on/off?
no i havent tried that, you could probably just let your car idle for a while after its at operating temp and see how high they get with no air movement over the heat exchanger. i think if ive been letting it sit for a while or in traffic ive seen IATs as high as 135-140
12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]
I haven't, my pump is set to kick on with the ignition is in the on position.
The reservoir I used was a recovery tank for a volvo, I never had an issue with the coolant getting too high or expanding to where it leaked. This year I'll be doing something different. I want to fabricate a larger tank that I can fill with ice while I'm at the track.
12.770 @ 111.99 Intercooled Eaton M62
