Paul Winey

What seems to be the best set up for re-routing the heat exchanger for a 98 12V planning on twins. I'm looking at an S400 primary and an HTB2 for the upper. What problems has anyone encountered when moving the exchanger as far as extremes of outside temps. Here in Wisconsin we can see 20 below and 100 degree days in the summer. Any thoughts welcomed. Does anyone sell a kit for the heat exchanger by any chance?

Paul

ratsun

Last time I was over at PDR Piers told me they were working on a relocation kit but you will have to contact them to see if they have it done yet?

B KIRK

I relocated mine just under the rad support, on the crossmember.
I modified the stock mount for the relocation.
Had to reroute the tranny and coolant lines.
Did this a couple years ago, no problems.
You can just see the tranny lines in the top of the pic.



Brad

Paul Winey

B Kirk:

That's got to be one of the cleanest undercarriages I've seen in a long time. Just drove to work through all kinds of slop and slush with salt so it's almost impossible to keep it clean. Thanks for the post too!

Paul

gunracer1

i left mine in the stock location, and i run a 40 on top and a bht3e on the bottom with a 27cm exhaust housing. it was a tight fit and i had a hard time doing the exhaust but i really wanted to leave all the stock tranny lines.

John Faughn

How much work does the exchanger do , what about removing ?
I was thinking about putting the cooler in a under bed with fan & removing exchanger , just a thought for now this is my research to find out if the idea is possible.

paulb

I removed mine when I put the twins on, and added a cooler like you described. So far the tranny runs cooler now then it did before. The heat exchanger warms the fluid as well as cools it. If the tranny temp is lower then the water temp, then the heat exchanger will warm it up. The heat exchanger is mainly in use when the TC is not lockup up, so during lockup you will see very little change in temp. For racing I like to be able to cool the trans temp below the 180-190 of the water temp, when idleing. With the external trans cooler I can do that. When I had the heat exchanger installed, as soon as I started the pickup, in the staging lanes, the tranny temp would start climbing to the 180-190. Now it stays cool until I start putting the power to it.

It has only gotten down to the low teens here, so I can't comment about temps lower then that, but I haven't had any problems with the cold weather yet.

Paul

Stamey

It depends on whose twin design you go with. My heat exhanger still exists in the stock location, with no bind, and the setup is so good I can pull them out and install them in one piece (both turbos, hot pipe and WG). One of the support brackets was ground a little though. See pic. The hardest part about installing them is lifting them into the engine bay, seriously. Once they are down by the engine they practically fall into place.
My twins are by TRE Diesel (Tim Barber).




Chris

CJ

HOLLY COW My truck wasn't that clean the day I drove it off the lot. That is awesome!
CJ

ratsun

_________________________

Dude Your tires arent even dirty
Nice work on keeping it clean
Opps Hi-jack alert
Oh yeah the heat exchanger re-mount looks great too I,m goona have to look closer at that spot.

Paul Winey

Has anyone had trouble with the under-the-bed mount with a fan due to road debris, slush, rocks, etc. I like the thought of leaving it where it is if possible and cutting/grinding the bracket if necessary - thanks Stamey. I'm still trying to figure out how B Kirk keeps his so clean?

ratsun

I have used mine for about 20 months now and no problems yet
Its a area that stays pretty clean on my truck (not B KIRK clean but regular clean )

B KIRK

Thanks guys.
Those pics are from when I first completed the front end rebuild.
Everything had been just painted back then.
I am lucky enough to have a detached heated garage.
I always hose everything off when I pull it in from the slop.
And yes, sometimes have to use soap and a brush to clean it.
Like mentioned, I have had no problems with it in that location.


Brad