rear main seal

03_gt

New Member

Nov 17, 2002

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Jun 28, 2004

#1

• Jun 28, 2004

• #1

im thinking of buying a 86gt and it needs a new rear main seal. how big of a deal is it to replace it?

 

ECU5.0

Banned

Jan 10, 2004

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raleigh, nc

Jun 28, 2004

#2

• Jun 28, 2004

• #2

well it depends on if you think pulling the tranny, clutch and flywheel a big deal. also, if its been leaking for awhile and its a 5spd, there is a good chance the flywheel needs resurfaced or replaced and needs a new clutch

 

03_gt

New Member

Nov 17, 2002

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Jun 28, 2004

#3

• Jun 28, 2004

• #3

how much does it cost for a new seal

 

cjman15

Banned

Apr 15, 2004

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Fairfield, PA

Jun 28, 2004

#4

• Jun 28, 2004

• #4

20 bucks

 

03_gt

New Member

Nov 17, 2002

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Jun 28, 2004

#5

• Jun 28, 2004

• #5

would there be much damage done if it has been driven alot with the seal needing to be replaced? thanks for all the help

 

1991vert

10 Year Member

Feb 27, 2004

1,103

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Ludlow, MA

Jun 28, 2004

#6

• Jun 28, 2004

• #6

it'll just leak oil. but in this case it will drip on your flywheel and clutch like stated above.

 

03_gt

New Member

Nov 17, 2002

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Jun 28, 2004

#7

• Jun 28, 2004

• #7

what would the oil on the flywheel do?

 

ECU5.0

Banned

Jan 10, 2004

1,803

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raleigh, nc

Jun 28, 2004

#8

• Jun 28, 2004

• #8

the clutch will slip and it will pit the flywheel. ive seen some pictures of flywheels that had oil on them and it aint a pretty site

 

1991vert

10 Year Member

Feb 27, 2004

1,103

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Ludlow, MA

Jun 28, 2004

#9

• Jun 28, 2004

• #9

mine wasnt pitted, just looked like someone had a BBQ on my flywheel

 

ECU5.0

Banned

Jan 10, 2004

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raleigh, nc

Jun 28, 2004

#10

• Jun 28, 2004

• #10

1991vert said:

mine wasnt pitted, just looked like someone had a BBQ on my flywheel

Click to expand...

mmm...what kind of bbq? carolina bbq or texas bbq?

 

HISSIN50

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

15 Year Member

Nov 29, 1999

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Jun 28, 2004

#11

• Jun 28, 2004

• #11

ECU5.0 said:

mmm...what kind of bbq? carolina bbq or texas bbq?

Click to expand...

texas-crude [oil] BBQ

PS, what is a Carolina BBQ?

 

B

blk92stangg

New Member

Jan 30, 2004

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Hawaii

Jun 28, 2004

#12

• Jun 28, 2004

• #12

If that's the only thing holding you back from getting an otherwise straight 86, I would say that the leaky seal is no biggie. It would give you an excuse to resurface the flywheel and throw in a new clutch, maybe even change cables, quadrant etc.

 

03_gt

New Member

Nov 17, 2002

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Jun 28, 2004

#13

• Jun 28, 2004

• #13

this is the ad for it and its canadian

86 gt
16" centerline stars
flowmaster mufflers
off-road H-pipe
fuel-injected 5.0L motor
sunroof
primer on red-interior
210,000kms
Aircared till next year
runs good
sony cd player

Needs some work
1400$obo

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

6

79

Charlotte, NC

Jun 28, 2004

#14

• Jun 28, 2004

• #14

The other thing to be aware of is that when engine's produce too much crankcase pressure, or the pressure isn't vented properly (pcv system is malfunctioning) it will force oil out of seals and gaskets. Many a rear main seal has been replaced only to find that the new leaks also. Crankcase pressure will force oil out of a brand new seal.

I'm not saying there's nothing wrong with the seal. Just understand that a leaking seal doesn't necessarily mean that the seal is bad. High mileage engines with deteriorating ring seal and excessive blow by create excessive crankcase pressure. Clogged oil traps and pcv valves also can cause excessive crankcase pressure.

hissin - what's Carolina BBQ? you gotta come over this way; I'll treat you to some BBQ.

 

ECU5.0

Banned

Jan 10, 2004

1,803

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raleigh, nc

Jun 28, 2004

#15

• Jun 28, 2004

• #15

HISSIN50 said:

texas-crude [oil] BBQ

PS, what is a Carolina BBQ?

Click to expand...

vinegar based sauce.....its the best

 

_jb_

New Member

Mar 4, 2004

808

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Michigan, Berrien County

Jun 28, 2004

#16

• Jun 28, 2004

• #16

Yeah I have a leaking rear main seal. I've been driving it since the spring, and I haven't noticed any difference in performance when I drove it up and down the driveway last fall. But this fall/winter I will pull the engine out and fix that, and there is a good chance of putting in a 331 Stroker. If not the stroker, maybe turn it into a 306, or at the least rebuild the 302. Be a great time to clean the engine bay, paint the engine, and all that good stuff!

 

HISSIN50

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

15 Year Member

Nov 29, 1999

31,179

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Jun 29, 2004

#17

• Jun 29, 2004

• #17

Michael, im there!

 

GT Trooper

Member

Feb 16, 2004

87

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7

Redford

Jul 6, 2004

#18

• Jul 6, 2004

• #18

Michael Yount said:

The other thing to be aware of is that when engine's produce too much crankcase pressure, or the pressure isn't vented properly (pcv system is malfunctioning) it will force oil out of seals and gaskets. Many a rear main seal has been replaced only to find that the new leaks also. Crankcase pressure will force oil out of a brand new seal.

I'm not saying there's nothing wrong with the seal. Just understand that a leaking seal doesn't necessarily mean that the seal is bad. High mileage engines with deteriorating ring seal and excessive blow by create excessive crankcase pressure. Clogged oil traps and pcv valves also can cause excessive crankcase pressure.

hissin - what's Carolina BBQ? you gotta come over this way; I'll treat you to some BBQ.

Click to expand...

Where is the PCV valves located?

 

ECU5.0

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Jan 10, 2004

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raleigh, nc

Jul 6, 2004

#19

• Jul 6, 2004

• #19

GT Trooper said:

Where is the PCV valves located?

Click to expand...

back of the motor right behind the intake. just stick your hand back there and youll feel it

 

ECU5.0

Banned

Jan 10, 2004

1,803

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raleigh, nc

Jul 6, 2004

#20

• Jul 6, 2004

• #20

Michael Yount said:

hissin - what's Carolina BBQ? you gotta come over this way; I'll treat you to some BBQ.

Click to expand...

eh, is it memphis bbq or carolina bbq? there is a difference, but i love both. mmm..delicious