I hear lots of good things about the htt. was it hard to install? the only thing ive heard was the bumper bolts had to be ground on or something like that?
does it use your stock tubes? thanks for any answers

 

Very easy to install. It does use the stock tubes. The bumper bolts do have to be ground down to the top of the nut.

Interesting on the HTT guys comments. My observation is that it is almost identical to the Spearco. It is as if they used the Spearco, copied it, but modified just enough to make it a lot easier to install than the spearco. I don't know this for sure, but is just simple side by side comparison.

 

I didn't have to ground down the bumper bolts, it's tight but nothing was trimmed. If you have 3 arms or a buddy, it is easy to install. Maybe I'm reading the specs wrong, but I can't see where the inlet/outlet tubes are any smaller in ID or OD???

 

The biggest thing to look at when choosing an intercooler is the method of construction of the core itself. There are three main types of construction. There is tube and fin, which is what the stock intercooler cores is made of. Bar and plate which is what the spearco, banks are made of. Then there is extruded tube which is by far the most efficient at transfering heat, without any significant pressure drop. At 70psi we had less than 1psi loss from inlet to outlet.

 

so is the bd made of extruded tube and is it the only one that is?
ive got a stock intercooler just trying to see what is the best one for the money not really the cheapest. ive seen the banks in person and I really like the bigger tubes from the intercooler. does bd offer that also?

 

Yeah Tom, those are specs I mic'd off the OEM & HTT CACs sitting in the shop.

 

Pat may not be in a position to confirm or deny, but extruded tubes open the possibility of interior surface details which greatly increase surface turbulence (and thus thermal transfer efficiency, or K value) without the use of flow-restricting turbulators (or louvres) inside the tubes.
Definitely a well-engineered item if so...

Considering their cost, I wouldn't dream of cutting one up to check.

This tech has been around for several years in copper-based heat exchanger tubing.

p.s. this post, should you choose to accept it, will self-destruct in 10 seconds...

 

my htt droped my egts by 150 so far cruxing down the highway first day of driving it down the the road so far so good

 

Mike, So are you happy w/ what you see on the HTT? I respect your unbiased opinion more than I trust some of what I hear from these manufacturers/builders. What is your opinion of the "not only volume but velocity" tactic HTT uses in their design parameters?

 

Turbulent boundary layers can do wonderful things for K value. The extruded tubes give you the double benefit of a turbulent boundary layer AND the greater surface area to contact-- both helping transfer efficiency a bunch.

There are materials available that could do wonders in a heat exchanger. Unfortunately, billet diamond is pretty expensive these days, as is the MIG wire that welds it

 

When you make one, Justin, let me know...

 

so you would choose BD if you bought one?

 

Blockage? To my knowledge, no. All the trucks were compareable. Unless, they (cooling group) later made changes for production to reduce the pressure drop. I have a hard time believing more than one truck would have bad instruments for data collection.

 

I haven't been keeping up much on what is the latest.

But based on what I've read recently, the BD is top of the list.

I still have an irrational soft spot in my heart for Spearco just because...

I'd like to see the HTT in person, more out of curiousity.


I'm not a particular fan of BD-- but to me BD seems to have about the best total engineering talent of any of the major performance diesel players. More than II, ATS, DTT, etc. Sure, there may be some other players making a slightly cooler trans, or doing interesting turbo experiments, and so forth. But BD has about the most complete range of interesting HP upgrades.

The BD twins were one of, if not *the* first commercially available twins kit that didn't look like it was fabbed in a garage-- it looked *manufactured*-- a real production piece.

They've done plenty of badge engineering (plug n power, etc), but they seem to me to really have their engineering act together.

Hats off to Brian, Christian, and all those rascally Roths.


jmo

 

I am perty sure that BD has the engineering of the Turbo and intercooler up to snuff. With a guy having 40 years of experience doing all the work, that perty much sums it up. He knows what works, well.