Trans pan gasket fail?

[Blk04MM]

Met a dude with a marauder this past weekend. Said he doesn't drive it because its leaking trans fluid possibly from the pan.

Showed me pics and the seal between the motor/trans was dry as ever. But the whole connection point of trans to pan was wet.

Said he was running it hard a few nights racing his buddies. I told him I'd ask here to see if there is a response and while its apart he might as well JMod it. I don't recall his mods but he had high mileage and a massive tire on the rear height wise.

Is it possible that heat played a factor in this?
Do they generally fail after "x" amount of miles?

[fastblackmerc]

Met a dude with a marauder this past weekend. Said he doesn't drive it because its leaking trans fluid possibly from the pan.

Showed me pics and the seal between the motor/trans was dry as ever. But the whole connection point of trans to pan was wet.

Said he was running it hard a few nights racing his buddies. I told him I'd ask here to see if there is a response and while its apart he might as well JMod it. I don't recall his mods but he had high mileage and a massive tire on the rear height wise.

Is it possible that heat played a factor in this?
Do they generally fail after "x" amount of miles?

Heat could be a factor but I doubt it.

Could be the tailshaft bearing / seal is on its way out.

Never heard of a pan gasket failing.

What work has been done recently?

[Blk04MM]

Heat could be a factor but I doubt it.

Could be the tailshaft bearing / seal is on its way out.

Never heard of a pan gasket failing.

What work has been done recently?

Not sure. Didn't ask. Don't quote me on him having 4.10s.

I know I seen the pan and the member having fluid on them. I could be wrong but Isn't the tail shaft bearing further to the rear so that would eliminate that? And by driving it would cause fluid to be further to the rear and have fluid on the driveshaft? The pics showed the DS to be dry

[RF Overlord]

The OEM transmission pan gasket is designed to be re-usable and is very robust unless damaged by improper handling.

Most aftermarket gaskets are crap, so that could be his problem. They get damaged by over-tightening, then the problem is made worse by trying to tighten even more to stop the leak. By that time the pan rails are deformed and will never seal properly unless straightened.

[Krytin]

The OEM transmission pan gasket is designed to be re-usable and is very robust unless damaged by improper handling.

Most aftermarket gaskets are crap, so that could be his problem. They get damaged by over-tightening, then the problem is made worse by trying to tighten even more to stop the leak. By that time the pan rails are deformed and will never seal properly unless straightened.


+1 on that^^^

[JOEMERC]

When I dropped the trans pan I reused the same one and had no issues.Don't use the one that comes with the filter kit ,will most likely leak.

[Blk04MM]

The OEM transmission pan gasket is designed to be re-usable and is very robust unless damaged by improper handling.

Most aftermarket gaskets are crap, so that could be his problem. They get damaged by over-tightening, then the problem is made worse by trying to tighten even more to stop the leak. By that time the pan rails are deformed and will never seal properly unless straightened.


When I dropped the trans pan I reused the same one and had no issues.Don't use the one that comes with the filter kit ,will most likely leak.

He was clueless about a JMod. Said he never touched the trans never even had it flushed etc and never had leaks before

That's what made it weird to me. I ruled out the bearing due to the pan and member having all the oil on it.
I know the gasket is reusable that's why I asked if they fail due to heat being that he said he was out running the car hard and possibly melted it or something I don't know

[tbone]

If it was the tailshaft seal, the wind would blow the oil away from the pan. I bet it's the front seal. Mine blew out 2+ gallons in about 60 seconds.

[Blk04MM]

If it was the tailshaft seal, the wind would blow the oil away from the pan. I bet it's the front seal. Mine blew out 2+ gallons in about 60 seconds.

Exactly why i ruled out the TS

do you mean front seal as in trans to motor?

[tbone]

My mechanic said it was the one on the torque converter. I got whiffs of trans fluid all the time and complained to him about it before the seal blew out.

[Blk04MM]

My mechanic said it was the one on the torque converter. I got whiffs of trans fluid all the time and complained to him about it before the seal blew out.

Hmmm that's new to me. On his pics the front side of the trans where it bolts to the motor was as dry as it wants to be. I'll try to take a look at it myself when he gets it on jackstands to get a better look at it

[Blk04MM]

Got the car up on jack stands.

Looks like its coming from the front end of the tail shaft (where it bolts to the rest of the trans) ...those bolts are wet as well.

Being that the particular area sits midway between the trans member and trans pan I can see why it would leak on both areas.

So now My question is... Is there a paper or gasket that goes between the two or a liquid?

[MOTOWN]

Got the car up on jack stands.

Looks like its coming from the front end of the tail shaft (where it bolts to the rest of the trans) ...those bolts are wet as well.

Being that the particular area sits midway between the trans member and trans pan I can see why it would leak on both areas.

So now My question is... Is there a paper or gasket that goes between the two or a liquid?

Theres a paper gasket, but i look over the tailshaft housing for cracks.

[Blk04MM]

Theres a paper gasket, but i look over the tailshaft housing for cracks.

Will do. The fluid is coming out enough to keep under there wet even after not being driven for a day and sitting outside so either the gasket is a major fail or there is a nice size crack somewhere

What's the replacement on one of these run? Is there an upgrade I can recommend him or is junkyard fine?

[MOTOWN]

Will do. The fluid is coming out enough to keep under there wet even after not being driven for a day and sitting outside so either the gasket is a major fail or there is a nice size crack somewhere

What's the replacement on one of these run? Is there an upgrade I can recommend him or is junkyard fine?

I did the forced tail shaft lube mod from Blue ovalchips, but its a major pain to install as the crossmember has to be removed on one side so that the tail shaft can be removed.

No idea what that gasket runs, cant be much, i would pick one up from a trans shop if in fact thats the problem which i doubt it is.

[Blk04MM]

I did the forced tail shaft lube mod from Blue ovalchips, but its a major pain to install as the crossmember has to be removed on one side so that the tail shaft can be removed.

No idea what that gasket runs, cant be much, i would pick one up from a trans shop if in fact thats the problem which i doubt it is.

Either way the tail shaft has to be removed to replace gasket or as a whole so it will be checked for damage while its off.

My question is what's the replacement for the tail shaft?
I doubt the FTS lube mod be done. I've seen TS fail with that as well.

Does the crossmember have to be unbolted to remove the TS?

[MOTOWN]

Either way the tail shaft has to be removed to replace gasket or as a whole so it will be checked for damage while its off.

My question is what's the replacement for the tail shaft?
I doubt the FTS lube mod be done. I've seen TS fail with that as well.

Does the crossmember have to be unbolted to remove the TS?

You only have to unbolt one side of the crossmember and pry it out and down enuff to get the TS out, i dont know what a replacement TS housing would run.

[Chi Stallion]

I did the forced tail shaft lube mod from Blue ovalchips, but its a major pain to install as the crossmember has to be removed on one side so that the tail shaft can be removed.

No idea what that gasket runs, cant be much, i would pick one up from a trans shop if in fact thats the problem which i doubt it is.

+1 Great mod to do for piece of mind if you like goin 130mph


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[Blk04MM]

You only have to unbolt one side of the crossmember and pry it out and down enuff to get the TS out, i dont know what a replacement TS housing would run.

Oh ok. Thanks for the input.
:beer:


Anyone can answer what TS replacement is good?

[Blk04MM]

Ttt

............

[fastblackmerc]

Oh ok. Thanks for the input.
:beer:


Anyone can answer what TS replacement is good?

No need for it if your not going to travel at high speeds (100+) for extended periods.

[Blk04MM]

No need for it if your not going to travel at high speeds (100+) for extended periods.

No need to replace the TS? Lol

....Were about to "attempt" to get the DS out then unbolt the crossmember to unbolt the TS housing off.

What's the best way to drain the trans fluid

[Blk04MM]

Got a good look at the TS housing after spraying it down with break cleaner and its definitely hairline cracks right around the bolts where it bolts to the trans.

It's done for.

He's ordering a new TS housing and it'll be back on the road in no time.

Thanks all!

[MOTOWN]

Got a good look at the TS housing after spraying it down with break cleaner and its definitely hairline cracks right around the bolts where it bolts to the trans.

It's done for.

He's ordering a new TS housing and it'll be back on the road in no time.

Thanks all!

Glad to hear you found the crack causing the issue, but I would check the drive shaft u joints as vibration is what caused the TS to crack, or the drive shaft could be out of balance.

[Blk04MM]

Glad to hear you found the crack causing the issue, but I would check the drive shaft u joints as vibration is what caused the TS to crack, or the drive shaft could be out of balance.

When we drop the DS it'll be checked ... U joints as well