Trans temp. - Competition Diesel.Com

blackcloudCTD95 · 07-24-2017, 10:57 AM

What do your trucks run at? I use to run around 177 and it would go up to 180-185 on a hot day beating it
Since I removed my heat exchanger when I did my twins it now will go up to 180-186 driving normal in traffic on a hot day. I notice I have to lock the converter more to help cool it.

Is there a way to relocate the heat exchanger ?

12vCumminsFTW · 07-24-2017, 11:38 AM

Thats normal for it to run hotter with no heat exchanger. You can relocate it or alot of people just plumb in a remote cooler under the bed or something. Personally, I have the whole stock system and a remote derale cooler with a fan mounted behind my front bumper. it runs 150-160 down the road and I've never seen higher than about 185 towing in town in the summer.

jlbayes · 07-24-2017, 11:39 AM

I measure pan temp in both of my trucks. The 12v hovers around 150*-180* pan temp in town. 120* highway. Plenty of ways to relocate the heat exchanger. Just get creative.

thisguy65 · 07-24-2017, 12:35 PM

What heat exchangers are you guys running?

12vCumminsFTW · 07-24-2017, 12:39 PM

Stock

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jlbayes · 07-24-2017, 01:08 PM

Factory.

thisguy65 · 07-24-2017, 03:58 PM

I should of stated I don't have a dodge truck but building one using a 47rh. I would run something like a big B&M cooler but might keep the fluid to cool which is not good.

CorneliusRox · 07-25-2017, 09:53 AM

Go to a junk yard and get a stock one. They're expensive brand new, but they work a lot better than most aftermarket ones. I believe the same one was used from 95-07 (someone correct me if I'm wrong).

Burningtire · 07-25-2017, 10:47 AM

Third gen Tranny coolers are different. I think 94-02 are the same.

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Kryp2nitE · 07-26-2017, 10:42 PM

I have 2 derale DER-15960's mounted to the cab with both stock coolers deleted and a shield blocking the top 60% for snow/ice.

My pan temps are 105-120 while cruising with the fans on and get up to 155 in heavy traffic.

01silver bullet · 07-27-2017, 03:47 AM

I'm not a fan of running a heat exchanger at all as I've seen them rupture inside and mix fluids..I would recommend a details double stack cooler part number 15900 and your stock cooler and that should keep temps down! Then you don't have to worry about your trans filling with coolant!

BigPapa · 07-27-2017, 06:38 AM

Quote:

Originally Posted by 01silver bullet

I've seen them rupture inside and mix fluids..

I've never SEEN a 2nd Gen exchanger rupture and I can count on one hand the ones I've HEARD about. Now, 3rd Gen is a different story. I wouldn't be worried about it, and as the OP's found, removal is detrimental.

jlbayes · 07-27-2017, 08:07 AM

Quote:

Originally Posted by BigPapa

I've never SEEN a 2nd Gen exchanger rupture and I can count on one hand the ones I've HEARD about. Now, 3rd Gen is a different story. I wouldn't be worried about it, and as the OP's found, removal is detrimental.

Same boat. Lots of stories. Never actually seen one.

blackcloudCTD95 · 07-27-2017, 09:23 PM

Quote:

Originally Posted by BigPapa

I've never SEEN a 2nd Gen exchanger rupture and I can count on one hand the ones I've HEARD about. Now, 3rd Gen is a different story. I wouldn't be worried about it, and as the OP's found, removal is detrimental.

3rd gen coolers go like hot cakes and they are a pain to do.

I did some looking at the front coolers and the fins are all mushed I'm going to get a new one this week.

12vCumminsFTW · 07-27-2017, 11:10 PM

Quote:

Originally Posted by BigPapa

I've never SEEN a 2nd Gen exchanger rupture and I can count on one hand the ones I've HEARD about. Now, 3rd Gen is a different story. I wouldn't be worried about it, and as the OP's found, removal is detrimental.

yeah, I'm still running my stock one with 305k miles on it. Not worried about it at all.

Burningtire · 07-27-2017, 11:17 PM

I once installed a aftermarket derale on my 06 and didn't see one ounce of cooling difference. That was with factory cooler and heat exchanger. I was gonna delete mine but heard it's good for warming the Tranny up and keeping temperature incheck.

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blackcloudCTD95 · 07-29-2017, 07:44 PM

Where's everyone putting either a a2a or heat exchanger? On the frame on the passenger side? Could you squeeze one in the front?

07-24-2017, 10:57 AM	#1
blackcloudCTD95 Name: blackcloudCTD95 Title: Too Much Time Status: Not Here Join Date: Oct 2007 Location: south Fl Member`s Gallery Posts: 754	Trans temp. What do your trucks run at? I use to run around 177 and it would go up to 180-185 on a hot day beating it Since I removed my heat exchanger when I did my twins it now will go up to 180-186 driving normal in traffic on a hot day. I notice I have to lock the converter more to help cool it. Is there a way to relocate the heat exchanger ? __________________ 98 qclb 5x14, 191's , benched pump to 425cc , 4k , 23* head studs , valve springs , hx35/sxe366 compound kit. built trans

07-24-2017, 11:38 AM	#2
12vCumminsFTW Name: 12vCumminsFTW Title: Too Much Time Status: Not Here Join Date: Dec 2010 Location: Willcox, AZ Member`s Gallery Posts: 1,377	Thats normal for it to run hotter with no heat exchanger. You can relocate it or alot of people just plumb in a remote cooler under the bed or something. Personally, I have the whole stock system and a remote derale cooler with a fan mounted behind my front bumper. it runs 150-160 down the road and I've never seen higher than about 185 towing in town in the summer. __________________ -Aaron H. 97 12v 4x4 Last edited by 12vCumminsFTW; 07-24-2017 at 11:39 AM.

07-24-2017, 11:39 AM	#3
jlbayes Name: jlbayes Title: Too Much Time Status: Not Here Join Date: Mar 2011 Location: michigan Member`s Gallery Posts: 2,399	I measure pan temp in both of my trucks. The 12v hovers around 150-180 pan temp in town. 120* highway. Plenty of ways to relocate the heat exchanger. Just get creative. __________________ Jacob, 97 rclb

07-24-2017, 12:39 PM	#5
12vCumminsFTW Name: 12vCumminsFTW Title: Too Much Time Status: Not Here Join Date: Dec 2010 Location: Willcox, AZ Member`s Gallery Posts: 1,377	Stock Sent from my iPhone using Tapatalk __________________ -Aaron H. 97 12v 4x4

07-24-2017, 01:08 PM	#6
jlbayes Name: jlbayes Title: Too Much Time Status: Not Here Join Date: Mar 2011 Location: michigan Member`s Gallery Posts: 2,399	Factory. __________________ Jacob, 97 rclb

07-24-2017, 12:35 PM	#4
thisguy65 Name: thisguy65 Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Member`s Gallery Posts: 119	What heat exchangers are you guys running?

07-24-2017, 03:58 PM	#7
thisguy65 Name: thisguy65 Title: Diesel Enthusiast Status: Not Here Join Date: Apr 2017 Member`s Gallery Posts: 119	I should of stated I don't have a dodge truck but building one using a 47rh. I would run something like a big B&M cooler but might keep the fluid to cool which is not good.

07-25-2017, 09:53 AM	#8
CorneliusRox Name: CorneliusRox Title: Seasoned Rookie Status: Not Here Join Date: Dec 2012 Location: Detroit, MI Member`s Gallery Posts: 4,154	Go to a junk yard and get a stock one. They're expensive brand new, but they work a lot better than most aftermarket ones. I believe the same one was used from 95-07 (someone correct me if I'm wrong). __________________ Corey - BSME '21 Tesla Model 3 Perf '22 DMax AT4 2500

07-25-2017, 10:47 AM	#9
Burningtire Name: Burningtire Title: Too Much Time Status: Not Here Join Date: Apr 2012 Location: Rhode Island Member`s Gallery Posts: 598	Third gen Tranny coolers are different. I think 94-02 are the same. Sent from my SM-G930V using Tapatalk __________________ Gots a two point five pullin truck!

07-26-2017, 10:42 PM	#10
Kryp2nitE Name: Kryp2nitE Title: Green Behind the Ears Status: Not Here Join Date: Oct 2012 Location: San Diego, CA Member`s Gallery Posts: 64	I have 2 derale DER-15960's mounted to the cab with both stock coolers deleted and a shield blocking the top 60% for snow/ice. My pan temps are 105-120 while cruising with the fans on and get up to 155 in heavy traffic. __________________ 95 2WD HE351/BHT3B twins, OFV060HP, Built 47RH, Airdog 150, 18* Timing, AFC Live Stage 2

07-27-2017, 03:47 AM	#11
01silver bullet Name: 01silver bullet Title: Washed up Status: Not Here Join Date: Aug 2009 Member`s Gallery Posts: 853	I'm not a fan of running a heat exchanger at all as I've seen them rupture inside and mix fluids..I would recommend a details double stack cooler part number 15900 and your stock cooler and that should keep temps down! Then you don't have to worry about your trans filling with coolant! __________________ Siskiyou Diesel Performance

07-27-2017, 11:17 PM	#16
Burningtire Name: Burningtire Title: Too Much Time Status: Not Here Join Date: Apr 2012 Location: Rhode Island Member`s Gallery Posts: 598	I once installed a aftermarket derale on my 06 and didn't see one ounce of cooling difference. That was with factory cooler and heat exchanger. I was gonna delete mine but heard it's good for warming the Tranny up and keeping temperature incheck. Sent from my SM-G930V using Tapatalk __________________ Gots a two point five pullin truck!

07-29-2017, 07:44 PM	#17
blackcloudCTD95 Name: blackcloudCTD95 Title: Too Much Time Status: Not Here Join Date: Oct 2007 Location: south Fl Member`s Gallery Posts: 754	Where's everyone putting either a a2a or heat exchanger? On the frame on the passenger side? Could you squeeze one in the front? __________________ 98 qclb 5x14, 191's , benched pump to 425cc , 4k , 23* head studs , valve springs , hx35/sxe366 compound kit. built trans