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Transmission cooling

lowell

Proven Member
321
19
Apr 6, 2006
vancouver, BC_Canada
Still going. The filter picks up a few little particles here and there, as do the magnetic drain and fill plugs. Other than that it's holding 600hp nicely for daily driving.
 

drivemusicnow

Proven Member
1,444
30
Nov 15, 2004
Germany, Europe
3rd gear is about 0.24m circumference, so 9000rpm = 2160m/minute = 36m/s. Any ME's here?

Pitch diameter is a diameter ~halfway in between the OD and ID of the gear. (called circular pitch in this article: Gear - Wikipedia, the free encyclopedia)

Basically, your math is close enough that it shouldn't be an issue.

Heat kills oil's ability to do it's job. even going over 200* has a negative effect on oil and shortens gear life. Anything you can do to keep temps down is critical.
 

Xray2k4

Proven Member
38
0
Dec 2, 2010
Montreal, QC_Canada
I'm about to install trans cooler setup and had 1 question.
Does anyone see an issue with getting feed from the transmission drain plug and spray it on the top where the 3 gear is?

Regards!
 

1G Eclipse94928

Proven Member
657
7
Apr 3, 2013
Rohnert Park, California
I'm about to install trans cooler setup and had 1 question.
Does anyone see an issue with getting feed from the transmission drain plug and spray it on the top where the 3 gear is?

Regards!

Sounds to me like it would cause lower levels in fluid if you dont go external cooler, but i'm a transmission newb so hopefully someone with more experience will know for sure.
 

Xray2k4

Proven Member
38
0
Dec 2, 2010
Montreal, QC_Canada
Sounds to me like it would cause lower levels in fluid if you dont go external cooler, but i'm a transmission newb so hopefully someone with more experience will know for sure.
I will be running an external cooler and filter, just wondering if I can use the existing drain plug as my feed?
 

lowell

Proven Member
321
19
Apr 6, 2006
vancouver, BC_Canada
The only way I'd use the stock drain for a pickup is with a low profile steel fitting or banjo.
 

Xray2k4

Proven Member
38
0
Dec 2, 2010
Montreal, QC_Canada
The only way I'd use the stock drain for a pickup is with a low profile steel fitting or banjo.
Thanks for the answer, I will be running a low profile banjo and perhaps a skid plate on top of that
 

Scott McIntyre

DSM Wiseman
309
43
Mar 15, 2002
Halifax, NS_Canada
If you use the drain plug, you'll want to make sure that the fitting does not drop below the lowest point of the transmission case. Otherwise you risk bottoming out and ripping it off, which would mean bye-bye to your transmission.

Here's where I have mine:

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pksystems

Proven Member
677
135
Nov 9, 2003
Calgary, AB_Canada
Old bump. Any updates on this?

I'm assuming this is overkill for street use?

I'm getting ready to open up my transmission to add the LSD's. While it's apart I could easily add some fittings. :)
 

Scott McIntyre

DSM Wiseman
309
43
Mar 15, 2002
Halifax, NS_Canada
Yes, definitely overkill for street use. Unless you're in the habit of doing countless back-to-back highway pulls.

Since I installed my transmission temperature gauge, I don't recall seeing more than 180°F trans fluid temps on the street / highway (with my pump turned off).
 

decathect

Proven Member
198
7
Mar 5, 2009
Denver, Colorado
Wow, just discovered this thread, great info here. After having some transmission issues running 3 endurance races this year on a brand new rebuild (not sure if heat related or not), I'm seriously considering adding some cooling for extra protection.
 

getto822000

Probationary Member
9
9
Mar 6, 2009
Palo Alto, California
Quick question - did you remove the factory oil guide that sits in there? The larger one. I guess it isn't needed anymore right?

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lowell

Proven Member
321
19
Apr 6, 2006
vancouver, BC_Canada
I left the oil guide in so the trans can still function like stock in the event of a pump failure.
 

gsxitement

Proven Member
1,652
1,006
Dec 9, 2002
DOBBS FERRY, New_York
All up in your face with the resurrection…..how has this setup held up? I plan on doing something similar this off-season. Lime Rock always breaks my 4th gear, presumably from all the high speed/high G right handers. I’m also going to use the boostin’ bearing plate to keep shaft deflection down. Just curious how this held up, and any refinements you’d make to it. Thanks!
 
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