Mocal vs Tilton oils cooler pumps, One better than the other? Options

[pcar916]

I'm adding a cooler and pump to my transmission. These two pumps are similar in specification and both companies have been around a long time.

Tilton: http://www.summitracing.com/parts/TIL-40-524/

Mocal: http://www.racerpartswholesale.com/product...ial_Cooler_Pump

I know several of you run Jabsco Water Puppy pumps, but I see no advantage to it over the Mocal or Tilton.

Anyone out there with experience as to whether one is more reliable than the other?

[john rogers]

If you hook up the plumbing system you might be surprised and how little the actual flow is with any of the pumps. On the transmissions I setup and all the ones I have seen the outlets were on top of both the gear stack and also the R&P and essentially the oil just ran down on everything. The idea is two fold, first to get the oil cooled off and second to get as much as possible onto the gears to they will then cool off.

The highest temps I ever saw were at a race in Tecate MX when it was 96 degrees during the race and the trans got to about 275 or so. The temps were high due to the constant shifting and the tight corners making the GT limited slip work really hard. At the CA speedway when temps were 104 the temp only got to 210 due to the long run time on the NASCAR portion of the track. Less shifts mean less heat build up I imagine.

[pcar916]

If you hook up the plumbing system you might be surprised and how little the actual flow is with any of the pumps. On the transmissions I setup and all the ones I have seen the outlets were on top of both the gear stack and also the R&P and essentially the oil just ran down on everything. The idea is two fold, first to get the oil cooled off and second to get as much as possible onto the gears to they will then cool off.

The highest temps I ever saw were at a race in Tecate MX when it was 96 degrees during the race and the trans got to about 275 or so. The temps were high due to the constant shifting and the tight corners making the GT limited slip work really hard. At the CA speedway when temps were 104 the temp only got to 210 due to the long run time on the NASCAR portion of the track. Less shifts mean less heat build up I imagine.

Excellent. I'll run the entire pump/manifold and squirters on a bench prototype first just to see what it will produce with the oil both cold, and at high temperatures. I have lots of -6 and -8 stuff around the shop so I'll just use what's here. As for flow, I'd rather have a lot of it at low pressure, but want the oil in the cooler long enough to maximize heat transfer. Wish we could add some PCB's (kidding a little bit).

I've been told that both Swepco dino oil, and the Lubrication Engineer's synthetic are good lubes to use with this GT LSD that I've just put into this box. I'm leaning toward the LE for the EP rating and the longevity but I have to buy 5 gal. at a time. Guess I'll be using it for a while.

I talked to some local guys who follows NASCAR obsessively and the ~210F seems to be normal operating temp for those cars as well.