Oooopppsss tranny cooler suggestions ?

njk53 · 01-01-2010, 11:29 AM

I agree with Pat also. Do you have a cooler intank to the radiator? If so, use it, that should be sufficient. If you don't have an intank cooler just take a piece of transmission line material and bend it in an "S" shape about a foot wide 3 passes high and mount it in front of the radiator to create a heat sink.

It takes an enormous amount of slip heat in the transmission to create enough heat to get you the danger zone.

A lot of guys will eliminate their lines from the intank cooler and go to a remote (air to oil) cooler which is a mistake. An intank cooler is approx.
2 degrees cooler than an external cooler.

Chris "drooze" Wertman · 01-01-2010, 12:00 PM

Yeah none on the rad....no option there,

I was thinking of a "rail cooler" previously....but wasnt sure about the rules on that being rear of the firewall.....

Todd Boyer · 01-01-2010, 01:23 PM

I believe an in-tank cooler also helps the trans reach operating temperature sooner, which would help in cooler air temperatures.

Just my .02

njk53 · 01-02-2010, 03:14 PM

If I am not mistaken there is no rule in the NHRA/IHRA rule book that specifically forbids a homemade rail cooler.

I did a lot of vehicle level testing on oil coolers and lines where we would artificially dial in 20% slip into the transmission (generating an huge amount of heat), towing a 25,000 lb. towing dyno, at 110 degrees ambient temperature. Even with all of that the truck we were testing took a while to make max. allowable temperature. Under no circumstances will your race car ever see those type of conditions. It will be trial and error but monitor your temperature gage.

I like to use the intank cooler because as someone else said the transmission will reach operating temp faster. Even in hot weather the intank cooler cools better than the external (air to oil) cooler.

Let us know how things work out.
NJK

greg fulk · 01-02-2010, 07:22 PM

Drooze i have a frame rail Jr. cooler it's right in front of me it's 2 1/5 " wide by 18" long & I bet it dosen't weigh 6oz. it was $41.30 from Summit wth discount. it's what I had on the silver car & worked great. The Cutlass dosen't have a cooler on it but the Z-28 is going to be driven a little bit on the street that's why I bought it.

'

njk53 · 01-03-2010, 12:32 PM

Greg, what stall speed converter are you going to use in the street car?

01-01-2010, 11:29 AM	#1
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Oooopppsss tranny cooler suggestions ? I agree with Pat also. Do you have a cooler intank to the radiator? If so, use it, that should be sufficient. If you don't have an intank cooler just take a piece of transmission line material and bend it in an "S" shape about a foot wide 3 passes high and mount it in front of the radiator to create a heat sink. It takes an enormous amount of slip heat in the transmission to create enough heat to get you the danger zone. A lot of guys will eliminate their lines from the intank cooler and go to a remote (air to oil) cooler which is a mistake. An intank cooler is approx. 2 degrees cooler than an external cooler. __________________ Nelson Kowal Stock 345

01-01-2010, 12:00 PM	#2
Chris "drooze" Wertman VIP Member Join Date: Sep 2009 Location: Barberton Ohio Posts: 1,114 Likes: 0 Liked 0 Times in 0 Posts	Re: Oooopppsss tranny cooler suggestions ? Yeah none on the rad....no option there, I was thinking of a "rail cooler" previously....but wasnt sure about the rules on that being rear of the firewall.....

01-01-2010, 01:23 PM	#3
Todd Boyer Senior Member Join Date: Feb 2004 Location: Saint John NB Canada Posts: 561 Likes: 30 Liked 6 Times in 5 Posts	Re: Oooopppsss tranny cooler suggestions ? I believe an in-tank cooler also helps the trans reach operating temperature sooner, which would help in cooler air temperatures. Just my .02

01-02-2010, 03:14 PM	#4
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Oooopppsss tranny cooler suggestions ? If I am not mistaken there is no rule in the NHRA/IHRA rule book that specifically forbids a homemade rail cooler. I did a lot of vehicle level testing on oil coolers and lines where we would artificially dial in 20% slip into the transmission (generating an huge amount of heat), towing a 25,000 lb. towing dyno, at 110 degrees ambient temperature. Even with all of that the truck we were testing took a while to make max. allowable temperature. Under no circumstances will your race car ever see those type of conditions. It will be trial and error but monitor your temperature gage. I like to use the intank cooler because as someone else said the transmission will reach operating temp faster. Even in hot weather the intank cooler cools better than the external (air to oil) cooler. Let us know how things work out. NJK __________________ Nelson Kowal Stock 345

01-02-2010, 07:22 PM	#5
greg fulk VIP Member Join Date: Jan 2003 Location: jackson Posts: 1,165 Likes: 0 Liked 5 Times in 3 Posts	Re: Oooopppsss tranny cooler suggestions ? Drooze i have a frame rail Jr. cooler it's right in front of me it's 2 1/5 " wide by 18" long & I bet it dosen't weigh 6oz. it was $41.30 from Summit wth discount. it's what I had on the silver car & worked great. The Cutlass dosen't have a cooler on it but the Z-28 is going to be driven a little bit on the street that's why I bought it. ' __________________ Greg Fulk 308 308X P/SA "ALL AMERICAN"

01-03-2010, 12:32 PM	#6
njk53 Senior Member Join Date: Jul 2007 Location: East China, MI Posts: 504 Likes: 0 Liked 0 Times in 0 Posts	Re: Oooopppsss tranny cooler suggestions ? Greg, what stall speed converter are you going to use in the street car? __________________ Nelson Kowal Stock 345

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