Rear Main Oil Seal Replacement ?
05-12-2017, 09:26 PM
#1
Rear Main Oil Seal Replacement ?
Car is a 1987 with the 350 TPI. I have access to a hoist and a Buddy with a transmission stand to help remove the transmission.
Both of us very mechanically inclined. Looking for any tips to make the job go smooth and no headaches ?
I want to replace all seals and fluids involved in the job. So next question is does Anyone Have the part numbers for the Rear main seal and oil
Pan gaskets etc for OEM replacements if they are available or I would think these should be available at Napa? Is there a transmission filter in these?
I work away so just like to order the all parts that are or may be needed while I am away and be able to get it done quick and not loose any driving time.
Thanks
Both of us very mechanically inclined. Looking for any tips to make the job go smooth and no headaches ?
I want to replace all seals and fluids involved in the job. So next question is does Anyone Have the part numbers for the Rear main seal and oil
Pan gaskets etc for OEM replacements if they are available or I would think these should be available at Napa? Is there a transmission filter in these?
I work away so just like to order the all parts that are or may be needed while I am away and be able to get it done quick and not loose any driving time.
Thanks
Last edited by Out-Cast; 05-12-2017 at 09:30 PM.
05-12-2017, 09:32 PM
#2
Re: Rear Main Oil Seal Replacement ?
You don't want OEM on the pan gasket at least. Fel Pro and others make one peice reusable gaskets out of silicone.
There are much better options than OEM in this particular category. Others will have more suggestions I'm sure.
GD
There are much better options than OEM in this particular category. Others will have more suggestions I'm sure.
GD
05-12-2017, 09:49 PM
#4
Re: Rear Main Oil Seal Replacement ?
No they are generally installed dry. They incorporate crush sleeves and come with longer bolts where necessary as well as some neat little plastic threaded studs that hold the pan in place so you can install the bolts, etc.
GD
GD
05-17-2017, 01:52 PM
#5
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You don't have to drop the pan to replace the rear main seal.
These aren't known to be leakers like the old 2-piece rear mains were. Are you sure that's where the leak is coming from? The distributor, intake, and oil pressure sender are more likely. As is the oil pan, for that matter.
These aren't known to be leakers like the old 2-piece rear mains were. Are you sure that's where the leak is coming from? The distributor, intake, and oil pressure sender are more likely. As is the oil pan, for that matter.
05-17-2017, 07:59 PM
#6
Re: Rear Main Oil Seal Replacement ?
I'll be checking everything over hopefully this weekend on the hoist but from being under the car in the garage it really looks like it's coming from the seal.
I replaced the oil pressure sensor last ward
I replaced the oil pressure sensor last ward
05-17-2017, 08:16 PM
#7
Supreme Member
Re: Rear Main Oil Seal Replacement ?
You might want to do yourself a favour and give the engine a thorough cleaning. If you can spray the engine (Gunk Engine Brite at Canadian Tire works well) while it's on the hoist, so much the better. Then let it run for an hour or so. You may save a lot of time and effort.
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