Which Radiator to put in truck?? options - Detroit Radiator Corp

Green461 · Mar 7, 2023

My KW T800 radiator has rotted quite a bit, leaking and I would like to replace. I've found the most reasonable place with decent prices and decent shipping prices... Detroit Radiator Corp... They have all these different options and yet nothing to describe the application and purpose... and the lady im emailing back and fourth there is very vague... All these different styles of tubes and fins... Detroit Radiator Corporation Heavy Duty Truck Radiators, Radiator Cores, Charge Air Coolers
Yet nothing explains the difference and application..
4 row standard
4 row low flow with dimpled tubes
4 row FF - im guessing fast flow?
Then there is this... Detroit Radiator Corporation Heavy Duty Truck Radiators, Radiator Cores, Charge Air Coolers
fin placement and what not...

Im all over, mountains, deserts, 100% highway... .... standard would probably suit me just fine... but if one style is better for not much more i'd upgrade... but is slow flow and dimpled an upgrade or is that for off road slow moving truck? or vice versa?? Fast flow? Absolutely zero info on this...
Anyone have any advice?
Thanks.

The Railsplitter · Mar 7, 2023

Interesting question... my KLR 650 (see avatar) is "water-cooled" and has a small radiator, but I've noticed that while riding in continuously low gears in the dirt, negotiating a lengthy & tricky trail section or tackling a long dirt upgrade, the system gets hot to the point where the bike will eventually shut down... some sort of design feature to prevent drastic overheating and damage to the system.

I'd ask the truck maker AND the radiator manufacturer, see what kind of responses they give, and whether the responses match. Send an email with the info you already put in your post, that's what I'd do if I were in your shoes.

Star Rider · Mar 7, 2023

On the Detroit Radiator website , up near the top click catalog , application, and you can search by vin.

JB7 · Mar 7, 2023

Green461 said: ↑

My KW T800 radiator has rotted quite a bit, leaking and I would like to replace. I've found the most reasonable place with decent prices and decent shipping prices... Detroit Radiator Corp... They have all these different options and yet nothing to describe the application and purpose... and the lady im emailing back and fourth there is very vague... All these different styles of tubes and fins... Detroit Radiator Corporation Heavy Duty Truck Radiators, Radiator Cores, Charge Air Coolers
Yet nothing explains the difference and application..
4 row standard
4 row low flow with dimpled tubes
4 row FF - im guessing fast flow?
Then there is this... Detroit Radiator Corporation Heavy Duty Truck Radiators, Radiator Cores, Charge Air Coolers
fin placement and what not...

Im all over, mountains, deserts, 100% highway... .... standard would probably suit me just fine... but if one style is better for not much more i'd upgrade... but is slow flow and dimpled an upgrade or is that for off road slow moving truck? or vice versa?? Fast flow? Absolutely zero info on this...
Anyone have any advice?
Thanks.
Click to expand...

On the DRC website there is a find by VIN, Make and Model. Did you submit that? Fast flow has a hose at the top and bottom of the radiator. I would ask for standard stock replacement, matches what came from the factory. What year is your truck, does it have the EGR, DPF...? They have been in business 87 years which is good. I'm skeptical of their Better cooling = Better mpg because the fan runs less. It may overcool at times. Cooling system, emissions, horsepower, ECM.... all programmed to work together. I'm not one for messing with the original design/specs. If the lady is vague that is a warning sign. They should be able to tell you what they have for a stock replacement. And their website should explain low flow, high flow etc.

"The Big Cam IV engines are great to work with, especially the later 88 NTs. The only issue these engines have is their low-flow cooling system. They can easily overheat in demanding situations, particularly in the heat of summer. Peter Sharp, Vice President of Pittsburgh Power, has been working with the Big Cam Cummins for over 30 years and he highly recommends that you revert the low-flow system back to the high-flow system used on all Small Cam and Big Cam I, II and III engines. "

Green461 · Mar 7, 2023

JB7 said: ↑

On the DRC website there is a find by VIN, Make and Model. Did you submit that? Fast flow has a hose at the top and bottom of the radiator. I would ask for standard stock replacement, matches what came from the factory. What year is your truck, does it have the EGR, DPF...? They have been in business 87 years which is good. I'm skeptical of their Better cooling = Better mpg because the fan runs less. It may overcool at times. Cooling system, emissions, horsepower, ECM.... all programmed to work together. I'm not one for messing with the original design/specs. If the lady is vague that is a warning sign. They should be able to tell you what they have for a stock replacement. And their website should explain low flow, high flow etc.

"The Big Cam IV engines are great to work with, especially the later 88 NTs. The only issue these engines have is their low-flow cooling system. They can easily overheat in demanding situations, particularly in the heat of summer. Peter Sharp, Vice President of Pittsburgh Power, has been working with the Big Cam Cummins for over 30 years and he highly recommends that you revert the low-flow system back to the high-flow system used on all Small Cam and Big Cam I, II and III engines. "
Click to expand...

2001 Detroit 12.7L turned up to about 550hp. I am just looking for the core, I can reuse my top and bottom tanks. Yes I submitted the vin, then someone replies, got a quote for 2 different cores. but there are several in between and curious the difference. She replied saying it depends on your usage on/off and HP... etc.. obviously... but never explained what is for what and hasnt replied since.

Green461 · Mar 7, 2023

Finally spoke with her on phone, I guess the 3 row is stock/standard so the 4 row normal one is what I ordered... 860.00 she told me that for my application on road a 4 core with the "4 Row Low Flow High Efficiency Core" would be better and handles more HP, up to 1000hp... kinda overkill and that core only was 1260.00 Dont really need that seeing the stock one with rotted out fins only warmed up a bit going up mountains.. She still never answered my question of the differences, fast flow, slow flow, larger tubes, fins, profiles... gave up and just ordered the upgraded standard 4 core. Headache trying to order all that is over.

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