[CRToney]

I put a set of Tim's tubz on my ole ranch truck as she does a fair bit of towing and a few more mpg can't hurt. I am very pleased with the results. The truck has more power now and with a half turn of the fuel screw a lot more. It only smokes a little on initial spool up and sure makes the drivetrain growl if I get into it too much below 1500 rpm. I have to get a fan clutch back in my truck as the fan is always on and really sucks the hp. My recommendation is to get a set of tubz if you don't have one already. Now I have some TORQUE. Not quite as much as my '03 but enough for the NV4500 and Dana 70 I am sure.

 

[Philip]

I'll be dynoing in a couple of weeks. I am thinking about throwing my set of tubes on between pulls to see what the difference is between a 24 valve air horn and Tim's tubes.

I was talking to him about that yesterday at the Indy diesel nat's and he is wanting to see the results also.

I tried to dyno yesterday. The dyno they had there I couldn't run dualls on. I also didn't have enough factory lugs nuts with me to take off my outer tires. The one I'll be at in a couple of weeks I can run duals on.

 

[gary j westrope]

they are a very nice product! im very happy with my set

 

[Dustin]

more info please... I'm intrigued

 

[lwfire]

I'm happy with mine great throttle response and an increase in fuel mileage almost 1 mpg

 

[Philip]

Dustin the cooltubz are a 3" stainless tube assy made to replace the stock air horn. If you have a 1st gen that is a 2.5" air horn and intake tube.

The stock air horns on all three generations of Dodges are restrictive to some extent. The late 2nd gen 24 valve is the best air horn in reguards to air flow. The 1st gen and the 3rd gens have the most restrictive air horns.

This first pic shows the difference between a 1st gen air horn and a 2nd gen 24 valve air horn. Your seeing the business end where it goes into the engine. The left side is the 1st gen air horn.

The second pic is a cooltubz. There is one other section to connect to the IC that isn't shown. You can also get them polished. I will paint mine.

You don't say what year you have. So here is a link that shows all the ones he makes.


1stGen.org :: View topic - Hey guys new intake In R &d on the Cummins forum

 

[Dustin]

mine's a '93... where does one find these?

 

[lwfire]

call Tim at 419-594-2542 i got mine for 160.00 but he said due to metal costs he was going to have a price increase, but it is still great bang for the bucks

 

[gotacummins]

is this the same guy that sells them on ebay?

eBay Motors: Dodge Cummins Diesel 3" Stainless CoolerTubz 91.5-93 (item 150256580954 end time Jun-12-08 18:34:04 PDT)

 

[lwfire]

It probably is he said he was out of Ohio but I don't know for sure you could call The # and ask I just bought an intake not the whole tube kit listed but it looks great everyone says great things about them when I was checking on them

 

[gary j westrope]

yea thats the same guy

 

[Philip]

Ok guy's I thought I would throw an update on the cool tubz.

I dyno'd last weekend. I made two pulls with the 24 valve air horn on the truck. Then I changed to a set of cooltubz's and made two more pulls. The truck was on the dyno during the swap so time down was about 15 minutes.

The cooltubz and the 24 valve air horn both made the same HP and torque. Or as much as my stock converter would let by it. The peak torque came in a little sooner with the cooltubz compared to the 24 valve air horn. The peak HP came in a little later than the 24 valve air horn. On the dyno it gained 1 PSI of boost with the cooltubz. But on the road I see no difference on the boost.

Thats about all the testing I can do till I get a better trans in the truck. My converter hates those 6X.018 injectors.:CRY:

 

[cumminspride]

So what did you pull on the rollers Philip?

 

[gary j westrope]

yea whats up philip lets see the numbers!

 

[Philip]

So what did you pull on the rollers Philip?

It wasn't much. It was blowing threw the converter bad.

163/509

Peak torque came in at 1650 RPM, HP came in at 2000 RPM

We dyno'd in 3rd also. He did one pull in OD and decided he didn't want to spin the rollers at 135 MPH for a pull. :lol3:

 

[deerslayer1979]

Would you say the 24v horn is worth the time to put on? Or would you wait, and spend it on the coolertubz? I can get the air horn a whole lot cheaper then the tubes so...
DS79

 

[Philip]

On the roller the Hp was the same. I have driven with the cooltubz on for 500 miles or so. The 24 valve intake I have 1k or so. I see no performance difference between the two.

The EGT's at WOT are the same. I do see a little difference in the cruise speed EGt's. The 24 valve intake is a little lower temp than the cooltubz. Midrange perfromance is real close between the to. By the seat of the pants meter the cooltubs seen to feel better.

I guess it comes down to. Do you want the look of the cooltubz's or something a little more stealth like the 24 valve air horn. Unless someone knows what the orginal air horn looks like they would be hard to tell it has been changed if everything is painted up.

 

[deerslayer1979]

So you selling yours?
DS79

 

[ChaseTruck754]

The stock air horns on all three generations of Dodges are restrictive to some extent. The late 2nd gen 24 valve is the best air horn in reguards to air flow. The 1st gen and the 3rd gens have the most restrictive air horns.

eBay Motors: 01 Dodge Ram Cummins Turbo Diesel INTAKE MANIFOLD (item 140121110151 end time Jul-15-08 14:50:19 PDT)
Phillip - does your 24 valve intake look like this one?

This one is a 3rd gen by description (says it's off an '01), but I don't see how these differ from the 2nd gen intakes. Do the 2nd gen have a larger opening where they bolt to the motor, or just a more restrictive air path?

 

[Philip]

That is a late 2nd gen. The 3rd gens came out in 2003. That is the same air horn I had installed. I plan on putting it back on.

I'll be switching to a hydro boost setup later on this summer. I hope. I don't think the setup will clear the 24 valve air horn. If it doesn't then the cooltubz go back on. They were modded to clear a hydro boost setup.