Showing my ignorance...


Is it different because you have a diesel though?

 

It's possible, since a diesel operates at a lower rpm. With the OD locked out I seldom get above 2200 rpm and that's 60 mph. My engine only has 180 hp and 1800 rpm's is where it runs the best.

 

Could be the OCD The cat runs significantly hotter than the downtubes and the tube wrap just makes the cat run hotter still.

If the exhaust truly is dumping excessive heat into the transmission, ducted air might be the cheap/easy fix. All the pieces and parts come off the shelf if you go looking into brake cooling parts and the only tricky part is finding the right place for the intake.

 

Won't that help cat efficiency? Or will it get too hot?


And I have a back-up plan... My stock heat shields off of my Harley. They hose clamp-on and are spaced-off about 1/4", and curved. Kind of like ducting.

 

It'll help, but it'll dump more heat right there next to the transmission, too. The shield reduces radiant energy by about half, but it doesn't do anything about conduction or convection so if you've got insufficient air flow for some reason you'll slow the energy transfer but not prevent it.

Have you got a heat problem that others don't or is this just great good re-engineering fun?

That might work. You may find that you still need some cooling air, but here's to hoping you don't.

 

Just pondering imponderables, trying to re-align tectonic forces and hoping to pull a fast one on the gods of physics.

But...


I figure if I can reduce some heat in and around that weak link that we call a 46RE with a little bit of time and a little bit of money, why not?

 

My favorite pastime! Thanks for the clue.

I've got in mind to some day get around to yarn testing to see how the air flows around the transmission because if it's not already wonderful I want to add scoops and ducts, particularly to vent air between the catalytic converter and transmission case and between the top of the case and the body. The real reason is just because I can but the excuse is that Mega Vipers are expensive.

 

Ah ha! Gotcha!

 

So...


My transmission is getting hot. I have the Perma-cool external filter, all plumbed correctly. I had the original Perma-cool filter on it but I did not yet have the temp gauge. I have since had to drop the pan, so for grins, I replaced the filter too. Cheap insurance, right? I had on there a Fram PH8A, as recommended by Perma-cool. Now that I have a gauge on it, I notice the temps like to creep up. I took it to a trans shop to do a flow test. They did, it failed, saying it was the external filter. They bypassed the filter and called it good. Now I do not know the temps as the sending unit is in the filter head, but I believe the trans shop, they have a good reputation. My questions are:
1 Did I get a bad Fram filter?
2 Was it maybe doing this too with the Perma-cool?
3 Maybe it flows low because of the trans and cannot push it all through the filter?
4 Should I try a Wix?
5 Is there a higher-flowing filter out there?
6 Ideas?
7 Anyone else have this issue?


Understand that I do not want to keep throwing filters on it to see what happens with the temps. I could but would rather not keep goosing the trans with excessive heat.

 

Relocate the temp sensor, and see what your temps are doing now. I think that should happen first....