PI 3500 stall with questions

[ctrlraven]

Dennis thanks for the great deal on the TC. Now for the questions would I need a re-tune after I install my 3500 stall converter, would it be wise to install a transmission cooler - if so what kinds and what brand transmission fluid would be good to use? My Marauder is daily driven and taken to the track ever so often. I'll be having a very good transmission shop doing the work, they do regular cars to NHRA drag cars.

[KillJoy]

:popcorn:

KillJoy

[sabtaj1]

when I put my 3000 in I didnt really like it at first until I got a new tune with the trans changes. Now I have upgraded to a 3500 and havent changed anything yet, as of right now I personally dont like driving my car alot becouse I havent made any changes yet. I would suggest a trans cooler also. and use Mercon V fluid. I am sure I will be more than happy with it once I get an updated tune. Just my 2 cents.

[merc]

How hot is too hot? The ideal operating temperature for automatic transmission fluid is between 175 and 225° F. At approximately 240° F, important additives in the ATF begin to cook. The result is the formation of varnish inside the transmission. At approximately 260° F, internal transmission seals (which are typically manufactured from a polyacrylate material) begin to harden. The end results are leaks, both internal and external, simply because the seals lose their elasticity. At approximately 295° F, transmission clutch plates begin to slip because the oil is breaking down further. At approximately 315° F, seals and clutches effectively burn out. Carbon forms in the oil and for all intents and purposes, the transmission is junk. Just for your information, a typical transmission will die within 2000 miles if subjected to 300° F+ heat.

http://www.tciauto.com/Products/TechInfo/trans_life_expectancy.jpg

[larryo340]

like that chart, like I said in the trans cooler thread "the cooler the better":D

[Zack]

I have found that unless it is over 90 outside and you are really beating the snot out of the car, the temps wont climb above 180 with the stock cooler.

[Raudermaster]

People say you don't necessarily need a re-tune once you get it installed, Only need a retune if you want to take full advantage of the T/C.

[Marauder.45]

The car will drive without a retune, and it'll be faster at the track. But you want to tune it when you can. The shifts are all out of whack until you do.

I've got over a year and 10,000 miles on a 3500 with no changes to the cooler.

For every one who says no, you'll find a yes. I plan on putting one on, just haven't gotten around to it yet. No exessive temps on my daily driver, and I do put on some miles. It gets over 90 here in the summer easy, and no problems.

[Marauder.45]

This mod should have you at 13.50s or so. I lost .7 secs off my 1/4 without tune.

[Dennis Reinhart]

Dennis thanks for the great deal on the TC. Now for the questions would I need a re-tune after I install my 3500 stall converter, would it be wise to install a transmission cooler - if so what kinds and what brand transmission fluid would be good to use? My Marauder is daily driven and taken to the track ever so often. I'll be having a very good transmission shop doing the work, they do regular cars to NHRA drag cars.



You should be fine, try it at the track and lets see

[sabtaj1]

deleted ___

[Blackened300a]

I had the 3000 stall installed and drove it for a few hundred miles without modifing my tune and it performed just fine, but it definitly improved when the lock-up schedule was adjusted in a new tune.

[ctrlraven]

<!-- / message --><!-- sig -->Yeah that is my main concern because I daily drive this car 1500-2000 miles a month so I'm sure I would be happier with getting a re-tune to adjust the lock-up schedule.

Dennis, is their a file you can send me or is something I need to have done in person? I have your Xcal2 unit with engine code MAV4, 3.55 gears and run 255/55-18s in the rear.

[Dennis Reinhart]

call me when you have a few

[ctrlraven]

Thanks Dennis for explaining things to me. Is their any break-in time I should allow for after having it installed before I take it to the track?

[Blackened300a]

Thanks Dennis for explaining things to me. Is their any break-in time I should allow for after having it installed before I take it to the track?

I backed out of my tranny shop and punched the throttle leaving a 20ft skid mark.
No break in required, There is nothing internal that needs to create a wear pattern.

[Glenn]

I have the 3000 PI TC and a large B&W trans cooler. The cooler is worth maybe 10-15 degrees cooling the trans and not much more. Simple highway driving at a constant 80 MPH it will run 180 degrees at 80 degrees outside. Any type of spirited driving and shifting puts it over 190-200 quickly. Drag racing will put it over 210 after a few runs. My advise is to get the largest cooler you can possibly put in front of the radiator - minimum 24" wide and 12" H. I have yet to find one that in my mind is big enough to handle any type of racing in our car with the 3000 PI. I ran at Road Atlanta Saturday and had to pit after 3 laps when the trans temp hit 250 degrees and the fluid started to smell -fried! But, it was fun while it lasted keeping up to a 427R Roush SC Mustang.

Glenn