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Engine 87 rear main leak

  • Thread starter Thread starter 87 black gt
  • Start date Start date May 18, 2018
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87 black gt

Member
Jan 24, 2016
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May 18, 2018
#1
  • May 18, 2018
  • #1
Looking for ideas on rear main seal leak 87 302 fuel injection stock rebuilt i used seal sleeves new seals put them on dry put them on with oil did everything except weld the opening shut I am out of ideas and patience any ideas on this
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,872
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polk county florida
May 18, 2018
#2
  • May 18, 2018
  • #2
Is your pcv working properly?
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
May 18, 2018
#3
  • May 18, 2018
  • #3
I used this seal with good luck after the stock replacement leaked worse than the original:

https://www.summitracing.com/parts/fel-2941
 

BlakeusMaximus

Still got to try a little lube on my speedo head
5 Year Member
Jul 12, 2017
2,474
1,348
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May 18, 2018
#4
  • May 18, 2018
  • #4
I’m surprised karthief didn’t give you the punctuation scpheal. Mine leaks a little too. But, a little punctuation goes as long way.
 
Last edited: May 18, 2018

87 black gt

Member
Jan 24, 2016
70
12
18
May 19, 2018
#5
  • May 19, 2018
  • #5
Dan02gt said:
I used this seal with good luck after the stock replacement leaked worse than the original:

https://www.summitracing.com/parts/fel-2941
Click to expand...
How is Woking out for you ?
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,872
10,543
203
polk county florida
May 19, 2018
#6
  • May 19, 2018
  • #6
BlakeusMaximus said:
I’m surprised karthief didn’t give you the punctuation scpheal. Mine leaks a little too. But, a little punctuation goes as long way.
Click to expand...
if his pcv was malfunctioning he punctuation would be better.
actually I only complain when it makes total nonsense.
 
Reactions: jrichker

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
May 19, 2018
#7
  • May 19, 2018
  • #7
87 black gt said:
How is Woking out for you ?
Click to expand...

So far so good. It's been in about a year and a half and isn't leaking. It's not in the instructions but it must be installed dry.
 

87 black gt

Member
Jan 24, 2016
70
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May 19, 2018
#8
  • May 19, 2018
  • #8
Dan02gt said:
So far so good. It's been in about a year and a half and isn't leaking. It's not in the instructions but it must be installed dry.
Click to expand...
I am going to summit today and get the seal .
 

87 black gt

Member
Jan 24, 2016
70
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May 19, 2018
#9
  • May 19, 2018
  • #9
87 black gt said:
I am going to summit today and get the seal .
Click to expand...
Dan02gt said:
I used this seal with good luck after the stock replacement leaked worse than the original:

https://www.summitracing.com/parts/fel-2941
Click to expand...
Do you put the plastic guide on the crankshaft, and slide the seal on ,or use a seal driver ,or do both?

Dan02gt said:
So far so good. It's been in about a year and a half and isn't leaking. It's not in the instructions but it must be installed dry.
Click to expand...
 

Dan02gt

mazing how much gas smell came from that tiny hole
20+ Year Stangneter
Mar 2, 2003
909
415
113
Greenville, NC
May 20, 2018
#10
  • May 20, 2018
  • #10
Definitely use the plastic guide that comes with it to slide it over the crank shaft, and your probably going to have to use a seal driver to get it to seat all the way.
 

Sparky714

5 Year Member
Oct 16, 2015
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208
73
North Dakota
May 20, 2018
#11
  • May 20, 2018
  • #11
87 black gt said:
Do you put the plastic guide on the crankshaft, and slide the seal on ,or use a seal driver ,or do both?
Click to expand...
Use the plastic guide and the seal driver if you have access to one. I did mine without the driver and it doesn't leak, bet would get it if I had to do it again.
 

87 black gt

Member
Jan 24, 2016
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May 20, 2018
#12
  • May 20, 2018
  • #12
Dan02gt said:
Definitely use the plastic guide that comes with it to slide it over the crank shaft, and your probably going to have to use a seal driver to get it to seat all the way.
Click to expand...
Ok , thank you
 

87 black gt

Member
Jan 24, 2016
70
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May 20, 2018
#13
  • May 20, 2018
  • #13
Sparky714 said:
Use the plastic guide and the seal driver if you have access to one. I did mine without the driver and it doesn't leak, bet would get it if I had to do it again.
Click to expand...
Ok, thank you
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,222
17,906
224
Massachusetts
May 23, 2018
#14
  • May 23, 2018
  • #14
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2

 

87 black gt

Member
Jan 24, 2016
70
12
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May 23, 2018
#15
  • May 23, 2018
  • #15
Mustang5L5 said:
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2
Mustang5L5 said:
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2

Click to expand...
Mustang5L5 said:
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2

Click to expand...
That is what I used,and worked like a champ, thanks. Now I hope it will not leak.
Mustang5L5 said:
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2

Click to expand...
Mustang5L5 said:
I used a 4" PVC plumbing cleanout fitting to drive in my seal. Worked out well for $2

Click to expand...
That is the a me thing

Click to expand...
Thats, exca
 

87 black gt

Member
Jan 24, 2016
70
12
18
Jun 3, 2018
#16
  • Jun 3, 2018
  • #16
Rear main seal still leaks, I even put the Teflon seal in ,my question is, do I have a bad crankshaft or is there something else causing this.pcv working good I am at my wits end about this.
 

General karthief

wonder how much it would cost to ship you a pair
5 Year Member
Aug 25, 2016
27,872
10,543
203
polk county florida
Jun 3, 2018
#17
  • Jun 3, 2018
  • #17
Did you use a repair sleeve?
do you have any pressure/blow by at the filler tube?
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
8,859
214
In the garage
Jun 3, 2018
#18
  • Jun 3, 2018
  • #18
87 black gt said:
Rear main seal still leaks, I even put the Teflon seal in ,my question is, do I have a bad crankshaft or is there something else causing this.pcv working good I am at my wits end about this.
Click to expand...

Did you put it on dry or oil the perimeter of the seal first.
You sure it's the RMS and not the intake, valve cover gaskets, oil pan or even the flywheel bolts?
 
Reactions: Sparky714

87 black gt

Member
Jan 24, 2016
70
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18
Jun 3, 2018
#19
  • Jun 3, 2018
  • #19
General karthief said:
Did you use a repair sleeve?
do you have any pressure/blow by at the filler tube?
Click to expand...
I used two repair sleeves, and both leaked no pressure at all
 

87 black gt

Member
Jan 24, 2016
70
12
18
Jun 3, 2018
#20
  • Jun 3, 2018
  • #20
mikestang63 said:
Did you put it on dry or oil the perimeter of the seal first.
You sure it's the RMS and not the intake, valve cover gaskets, oil pan or even the flywheel bolts? Directions said dry I am 100 % rear main seal ran the car for a half hour yesterday dump 4 quarts in garage
Click to expand...
 
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