MAC Deep Transmission Pan Install....

J

OCCUPY LoD :)
Its been 40K miles since I purchased my car and rebuilt the trans. At the time of the install I switched to Mercon 5 and got the 3200 stall T/C. That was 2 years ago and roughly about 30k was put on the trans/fluid since the rebuild.

I installed aftermarket gauges, a cooler and a tow hitch. Lately when towing I noticed the temp would climb to 180ish and my fluid was starting to get dark. Also, as you've probably noticed, my trans pan gasket was leaking so I decided to get a deep alluminum pan and perform a trans flush and filter change.

I purchased my pan off eJay from "Brenspeed" and it was $127 shipped. Its a MAC brand, alluminum and added an extra 3.5-4 qts of fluid and includes a handy drain plug. It also came with the necessary bolts(a tad longer would have been nice) and a good gasket, NOT made of qork. Got some M5 from the dealer(shop cost/$45 for 18 qts) and took my car up to my old work to borrow the rack and have some fun.

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After working at a trans shop for years I learned how to drain the fluids without getting all messy everytime. I leave the back two bolts tight and remove all the others, this will slowly drain the fluid. Than I remove one of the back two slowly with my air gun and this drains more. Finally I remove the last one slowly while holding the pan with my hand stopping before the bolt is completely out. After the last of the fluid drains from the hanging pan, I push it up tight against the trans and remove the last bolt completely and use the hose attached to the air gun to lower the gun to the ground. I than grab the pan with both hands carefull not to dump the rest of the fluid out.

I usually leave a tiny bit of fluid in the pan to look for debris and to keep any heavy loose particles in there and attached to the magnet so I can inspect. We call this a "pan drop" in the business.

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Next I installed a 4X4 filter which has the extra long pick-up tube, which isn't necessary, just helps incase I run low on fluid or if I'm drifting or something, lol.

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Next I tried to clean the area as best as possible(the shop NEVER has brake cleaner damn it!) and installed the Mac pan and supplied gasket.

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This shows the ground clearance issue that I was desperately worried about!
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Next step was to perform a complete flush of the system. I installed the BG flush machine in-line on the trans cooler lines. Its pretty sweet....just install the hoses in ANY order, fill it up and let the car run to swap the dirty fluid for clean fluid WITHOUT mixing them. 99% fluid exchange without damaging the trans by "flushing" the system because is uses the transmission line pressure.

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After I hooked up the machine, I lowered my car and added 6 qts of "grade B" ATF(lol, used fluid), started it and re-checked the system. Nothing on the stick, as I figured. Added another quart, nothing, added another...still nothing, haha. Added 1/2 a quart and it filled it to the bottom of the cold line. The standard trans service will change exactly 5 qts on these so I got an extra 3.5 qts into the system...sweet :)

Once I got the "dirty" system full I switch the machine to Process and let the car run. Here is a picture of my dirty fluid and the line pressure of the trans at idle...not too shabby.

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The flush took about 7 minutes to perform...look at my fluid now! :eek-large:
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Soooo perty, lol. Anyways....my trans doesn't hit 130* when I'm driving around town and its been close to 90* a couple days. Haven't towed yet but I imagine it will be back to normal plus some......


On a side note...remember that motor mount I changed when I installed my headers? Check this BS out.....

:mad-tilt::mad-tilt:
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:mad-tilt::mad-tilt:
 
Pretty pan J. :)

Those BG machines are pretty cool.

BTW, the solid rubber mounts SCP sells aren't bad comfort wise.
 
Whoa Jesse I knew you really like that machine... but you never told me that you really really like it

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Curious stain wouldn't you say?! muahahahah

Wow is that pan is almost as low as your already SCRAPED new exhaust?! Watch out dude. But that thing is so solid it will probably take a chunk out of a speedbump anyways :).
 
Lmao Max....you NEED to go get some, but NOT from "her". :tongue-pink:

Pretty pan J. :)

Those BG machines are pretty cool.

BTW, the solid rubber mounts SCP sells aren't bad comfort wise.

That BG machine is freaking awesome! 3500 bucks, but AWESOME, haha.

Thanks JP, it was the best looking one and the lowest price, lol.

Solid rubber probably wouldn't be too bad, I was thinking SOLID solid, like just metal to metal, haha.
 
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Once again J, you are proving yourself an asset to all Mark VIII owners on this site!. Got a question for you, how hard were the headers to install?.
 
Wait are you saying that you changed that "leaking" motormount only about 1 month ago and it is broken again?!

I heard all kinds of stories about the motormounts (fluid filled) lasting 30k miles but 1 month?!
 
Thanks :)!

Max...NOOOO...that leaking motor mount is my NEW one!!!! :mad-tilt: The old one was causing that "clunk" when I'd romp on it and let off. Oh well...I got some BA headers to equal it out...let it leak, I'll warranty it for free in 5 years when I replace it, lmao.
 
J, I must say you have the most modified NA Gen 1 I have ever seen..


I'd still say JP has him beat, both mod-wise, AND on track! ;-)

Jesse...nice write up...you should do what I did, make a cardomain page, and let people have the link. That way all your write ups are "shared" instead of having to browse through the entire thread for the pics.

BTW, I swapped my pan the day I did my JMOD. I then installed a drain plug when I replaced my stock JMOD tranny with my highly modified 98+ trans.

I didnt go with the larger pan due to ground-clearance issues. Remember my thread on markviii.org about when I hit "something" in the roadway? It hit the pan so hard, it cracked my TCC solenoid, and since my converter was already locked, it wouldnt/couldnt unlock. If I had the aluminum larger pan, I'd have been stranded, because it would have cracked.

larger pans on street-driven cars is a risk, IMHO. Especially on a car as low as yours. BUT...nice pan, and nice write up.
 
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ya i installed those solid rubber mounts and they lasted me about 2 months of hard track use. so i have a new one in there now and im thinking of doing the old school chain mount. running a chain from my motor down to my driver side "frame" but leaving a little slack in it so the mounts do there job untill i get on it.
 
Anyone know the part number for the pan filter for the aftermarket deep pan like the Mac which holds 3 quarts extra fluid?
 
JP, are you sure that's not the PN for the 96-98 stock pan with the dimple in it? Or is that the same filter you would use for the Mac pan?
 
The only difference should be the extension nipple on the bottom side of the filter. I am not aware of any other filter.
 
Get the ford bronco/truck 4x4 filter. 4R70W DEEP pan filter, sorry it took so long to reply, I though you were talking about the gasket. :) Just get the 4R70W 4X4 filter, it will have the extended pick up tube which will prevent the trans from sucking air when you turn.

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