Rear Main Seal

03REDFIRE

New Member

Apr 3, 2004

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Nov 10, 2005

#1

• Nov 10, 2005

• #1

OK I was told that I needed to fix this as this is where my leak is at...

My question is since my car has 136K on it is there anything i should upgrade at the same time to save on in labor since they will be replacing the rear main seal? sort of kill two birds with one stone or is this a only thing there fix

 

bjl95mustang

Founding Member

Jan 18, 2000

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Austin,TX

Nov 10, 2005

#2

• Nov 10, 2005

• #2

Not really, They will spend monst of the time on removing and installing the tranny.

 

Methodical

15 Year Member

Dec 1, 2003

1,192

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Clinton, MD

Nov 10, 2005

#3

• Nov 10, 2005

• #3

Yeah. Pilot bearing, throwout bearing. Hell why not the clutch and PP - only if they are bad. Peace

 

03REDFIRE

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Apr 3, 2004

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#4

• Nov 10, 2005

• #4

MMM centerforce

 

95COBRA241

New Member

Sep 3, 2005

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Delray Beach, FL

Nov 10, 2005

#5

• Nov 10, 2005

• #5

Most places charge around $200 just to drop the tranny. A new seal is $10-$20. So most wait until its time for a clutch change unless you can do it yourself.

 

94MustangGT5.0

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Apr 30, 2003

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Champaign, Illinois

Nov 10, 2005

#6

• Nov 10, 2005

• #6

Mine is leaking right now also, but I am not going to get in a huge hurry to fix it right away. A LOT of Mustangs get leaky rear mains, so its not uncommon, and as long as its addressed sometime in the future, you'll be fine. My car is put away for winter right now, and I have plans of fixing it next year when I will hopefully have a PI or Edge stall to install and most likely do a tranny build up while I have it out. It looks like you have a aftermarket clutch already installed, but if it has a lot of miles and/or is starting to slip, there is no better time to replace it since you will have the tranny down and all.

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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129

Nov 10, 2005

#7

• Nov 10, 2005

• #7

One thing, if not mentioned. Often a clogged or inadqueate PCV system will create a RMS leak. Folks have replaced the seal only to find that the leak returns. When the PCV system is clogged, pressure finds the next source of least resistance, which is often the crank seals. I would ENSURE you dont have a PCV bottleneck first.

Also valve covers gaskets have a thing for leaking in the back and dripping in such a way to make the leak appear to be a RMS.

You probably considered all this, but just in case.......

Good luck.

 

mo_dingo

20+ Year Stangneter

Aug 26, 2003

3,031

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Tucson, AZ

Nov 10, 2005

#8

• Nov 10, 2005

• #8

HISSIN50 said:

One thing, if not mentioned. Often a clogged or inadqueate PCV system will create a RMS leak. Folks have replaced the seal only to find that the leak returns. When the PCV system is clogged, pressure finds the next source of least resistance, which is often the crank seals. I would ENSURE you dont have a PCV bottleneck first.

Also valve covers gaskets have a thing for leaking in the back and dripping in such a way to make the leak appear to be a RMS.

You probably considered all this, but just in case.......

Good luck.

Click to expand...

Good point JT.

Personally, if you do find that your RMS is the cause, I would replace the pp/clutch/TOB, plus the pilot bearing, change out your ATF in the trans, and even the gear oil + friction modifier while you have it jacked up, if you haven't done it.

An inspection mirror is a really great way to get a better look at the back of the engine......Make sure you have a really at least a 4" mirror, that's very clean. If you find oil sludge, you should clean it up really well, and run the motor some more and see if you can isolate the leak 100%
Scott