tranny pan disk golf

[mouse]

my f250 with a c6, I can't keep the pan bolts torqued so it will start leaking after running for a wile, I have to check to see if they are tight before I drive and I can tell when they are lose because it will form droplets on the pan, if it dry there still tight. I have had my pan almost fall off on me and dumped all my fluid when I was driving, it is starting to irritate me because it keeps trying to chuck it, I did a tranny flush, new gasket, and filter the last time it almost chucked, the pan is straight but it has hard shifts but at about 2000rpm, shifts good if I peg it to shift point, release and peg it again

[fordman]

locktite maybe? if the bolt holes are level with the mounting surface. or maybe a rubber gasket instead of cork. if they make one for that.

[mouse]

it is a rubber gasket, and I am not going to put locktight on them because of experiance with it, I am thinking to much presuer

[fordman]

you could check your vent to see if its plugged up. if its not i would think too much pressure would push fluid out the vent. since you say the rubber is on there maybe thats the problem. have you used a cork one? they can weep fluid through the cork. but it might solve the loosening of the bolts.

[1971ford]

interesting about the pressure question.

because i cant keep either my engine or my tranny pan torqued down. after only a couple drives in the 71 from dropping the 429 in, 4 pan bolts were gone, 2 backed out, and a few loose. and all the tranny's bolts were loose. scary
total noob question-could too much tranny pressure have anything to do with it slipping? we just rebuilt the tranny so i dont know whats making it slip. also what problem makes too much pressure?

sorry for a bit of a thread hijack

[fordman]

the front pump makes the pressure for the transmission. it pressurizes the fluid coming out of the toruque converter. maybe a bad torque converter could cause a higher pressure. or some dirt in it. or maybe some dirt in the pump. it can happen even with a new one. or a badly placed gasket on the front pump when its installed. or the wrong gasket with just one wrong hole or no hole in the right place. i'm just throwing out ideas. someone who has more experience would be better helping than i can past here.

[mouse]

loss bands can also cause it to slip, on my I think it ether the type F I had to use or I have to adjust the vacuum modulator or replace the modulator because mine dose not slip its just hard and constant. I would hate that mine would be the valve body

[71PA_Highboy]

I know it sounds odd, but I use contact cement on the pan bolts ... Oil and tranny. clean it all up, apply the cement and put them in.

It doesn't have enough hold to cause issues, but works great for absorbing the vibrations that cause these bolts to loosen on their own.

A trick I learned from a REAL old-timer...

Been doing it for 22+ years and haven't had any come back with leaks from the bolts loosening up... gaskets leaking - now that is a different story.... .


hth,

eric

[1971ford]

loss bands can also cause it to slip, on my I think it ether the type F I had to use or I have to adjust the vacuum modulator or replace the modulator because mine dose not slip its just hard and constant. I would hate that mine would be the valve body

my freshly rebuilt tranny with new TCI manual/auto valve body will slip when shifting, and when your at highway speeds and you floor it it will slip (says my tach and the way it feels). we turned the modulator one turn after we noticed it was slipping but it still slips. do you think tightening the bands would help? how much should i tighten them to test it out?

[averagef250]

What was done during the rebuild? Were all the drum seals, sealing rings and bushings replaced?

With a rebuilt C6 you're supposed to use Dex3, not type F.

Just my experience, but if it says TCI on it throw it in the scrap pile. That companies products are a joke and thier customer service and warranty is worse.

A crappy old C6 with new drum seals, bushings and a shift kit ($30 worth of parts) will handle anything a mild big block can dish out.

[1971ford]

What was done during the rebuild? Were all the drum seals, sealing rings and bushings replaced?

With a rebuilt C6 you're supposed to use Dex3, not type F.

Just my experience, but if it says TCI on it throw it in the scrap pile. That companies products are a joke and thier customer service and warranty is worse.

A crappy old C6 with new drum seals, bushings and a shift kit ($30 worth of parts) will handle anything a mild big block can dish out.

dex3? never heard of it. why do you you use that instead of type F? can you change the fluids and possibly cure slipping or is it permanently scarred from the type F?

all bushings/gaskets replaced.

[fordman]

dextron 3 for use in newer fords.

[papabug71]

What was done during the rebuild? Were all the drum seals, sealing rings and bushings replaced?

With a rebuilt C6 you're supposed to use Dex3, not type F.

Just my experience, but if it says TCI on it throw it in the scrap pile. That companies products are a joke and thier customer service and warranty is worse.

A crappy old C6 with new drum seals, bushings and a shift kit ($30 worth of parts) will handle anything a mild big block can dish out.

Agreed. Total Crap Inc. They are all about profit now, unlike 15 years ago when they were a good company that wanted to help people like you & me out.

[averagef250]

Dexron/mercon3 (called dex3 or just ATF by most everyone these days) is your basic ATF and most everything runs on it nowadays. The newest stuff has dex4, 5, 6 and so on, but all those are is dex3 with additional additives mixed in. You can turn dex3 into any newer ATF by mixing in the appropriate additive. Type F is for old ford autos that have not been rebuilt in the past 20 years. The rebuild materials used since then are intended for dex3. Type F may not have bad effects, but I'd surely run dex3 if it were mine.

Do you have the old non-TCI valve body? You might have success by removing the TCI cursed unit you have and putting in the original with a shift kit.

A C6 is a real simple, rugged tranny. It's not easy to rebuild one correctly and have problems with poor shift quality. That's why I asked what was done in the rebuild. slow/erratic/weak shifts are a pretty good indication that something was overlooked in the overhaul.

[mouse]

when I bought my truck and was driving home my tranny started slip so I pulled over at my nearest friend house, did a repair job to make $30 and go start my truck, put it in drive and went no where I look under it I had a puddle and a trail of fluid. it is one of few tranny that can stand abuse and still run like nothing happened (that would damage most)