Does anyone know by chance the proper places of these clamps by part number? Took em off my ‘02 and ran em through the parts washer today. Replaced with new clamps from RiffRaff- honestly just curious. also- 4 of these had springs and 4 didn’t. Any reason why some have springs and some don’t?

I have the following clamps.

1x 1c34-6k786-AA
2x 1c34-6k786-BA
3x 1c34-6k786-CA
1x 1c34-6k786-DA
1x 1c34-6k786-EA

 

The four (4) clamps that DO have springs go on the "hot" side (driver's side) Charge Air Cooler (CAC) couplings.

The four (4) clamps that do NOT have springs go on the "cold" side (passenger side) CAC couplings.

The hot side is the charge air straight out of the compressor, that has not been intercooled yet. Being hotter, it is more expansive, and the springs help the clamps maintain constant tension throughout the thermal cycle, which is has a higher expansion ratio than the cold side that has the benefit of the intercooler removing as much as 130 degrees from the charge air.

I've run OEM spring loaded clamps on all 8 of my coupler connections since 2001.

Below, I've copied your list of part numbers for clamps, and will attempt to interpret where they might go:


1c34-6k786-AA : At the 3.5" inlet on the charge air cooler, driver's side. Clamping range from 3.38" to 3.69". QTY 1 required. (You reported having 1)

1c34-6k786-BA : At the 3" ports of the intake Y (aka "spider") QTY is as needed. (You reported having 2)

1c34-6k786-CA : At / on the charge air cooler, passenger's side. QTY 1 required. (You reported having 3)

1c34-6k786-DA : At the 3" ends of the CAC tubes. QTY is as needed. (You reported having 1)

1c34-6k786-EA : I think this was a revised clamp with a longer T Bolt and spring, for the hot side CAC tube at the spider, to resolve complaints of boot pop off. I have a vague memory of this revision and change of spring length and clamping bolt length... but given this all happened well over 20 years ago, my memory cannot be trusted.

When I put all Ford spring clamps in all positions, I already had Banks CAC pipes, a Banks Technicooler with all aluminum radiused flow end tanks, and Banks boots. The diameters between all of these Banks components are all the same, unlike the OEM Ford charge air cooler set up with different diameters between the intercooler and the CAC tubes, where the lower boots resolve the difference between diameters. Therefore, my telling you which clamp I used where in my installation will not be of much help to you.

 

thank you for all this detail!

 

Y2K has the receipts.

Before you put it back together get plenum reinforcers from Riff Raff so you can use T bolt clamps on the plenum instead of wimpy worm drives.

If you ever mod your truck for higher boost pressure you'll need them.

 

yep- this is my next job. I had meant to order the plenum boots and inserts. Right now I only have done the CAC boots. Saw an immediate gain in boost and mpg.

I replaced my clamps with new ones from RiffRaff. Do you guys think I should put the OEM back on the hot side? Or move the springs over to the riff raff clamps?

 

A constant tension (spring loaded) clamp is always better where there is an expectation of a large delta between temperatures.

The spring allows materials to expand, without edges of the clamp cutting into the boot.

The spring also maintains the clamps tension when the materials contract again, as temperatures cool.

One thing that one can always trust about OEM production parts from Ford: Ford is always looking for ways to increase profit by reducing the cost of production.

So when Ford specifies and "springs" the money for a more expensive clamp, one can trust that Ford deemed the part necessary... otherwise a cheaper, less complex clamp would have been specified, as Ford in fact did specify for the cold side.