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Shop Labor Time For Oil Pain Gasket

  • Thread starter Thread starter stang8384
  • Start date Start date Apr 1, 2017
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stang8384

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Jan 18, 2017
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Apr 1, 2017
#1
  • Apr 1, 2017
  • #1
Hello

Any idea what the shop labor time is to the replace oil pan gasket on an 89 mustang gt?

What about the rear main seal?

I don't have the time do it myself.

Thanks
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
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#2
  • Apr 1, 2017
  • #2
Trans drop, and engine lift. I'd venture not cheap if paying a shop to install $20 worth of gaskets.

$500ish Just a guess though
 

Dan02gt

mazing how much gas smell came from that tiny hole
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#3
  • Apr 1, 2017
  • #3
I would say anything under $500 is a good deal. Make sure they use the Felpro Teflon rear main seal and make sure it's installed dry. If not you will probably be replacing it again.
 
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stang8384

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Jan 18, 2017
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Apr 1, 2017
#4
  • Apr 1, 2017
  • #4
You guys are saying $500ish. Is that for both the rear main seal and gasket? ? I'm just trying to get a ball park so I know what I'm looking at before I start calling around.

Thanks

Scott
 
Last edited: Apr 1, 2017

mikestang63

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Apr 1, 2017
#5
  • Apr 1, 2017
  • #5
6 to 8 hours book time is about right
they need to drop the exhaust, trans, clutch, bellhousing or flexplate
undo the motor mounts, remove the starter jack up and support the the engine possibly remove trans lines, cables, possibly sway bar, steering rack. headers
$20 in parts but very labor intensive.It's almost easier to yank the entier motor out and do it with the engine removed.
make sure they get the proper pan one piece gasket and put RTV in the corners, and use the FelPro Rear main seal with the SS bushing sleeve
 
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stang8384

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#6
  • Apr 1, 2017
  • #6
Ok great. Thanks guys
 

jrichker

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#7
  • Apr 2, 2017
  • #7
mikestang63 said:
6 to 8 hours book time is about right
they need to drop the exhaust, trans, clutch, bellhousing or flexplate
undo the motor mounts, remove the starter jack up and support the the engine possibly remove trans lines, cables, possibly sway bar, steering rack. headers
$20 in parts but very labor intensive.It's almost easier to yank the entier motor out and do it with the engine removed.
make sure they get the proper pan one piece gasket and put RTV in the corners, and use the FelPro Rear main seal with the SS bushing sleeve
Click to expand...
That's the most realistic answer you have gotten so far; 6-8 hours labor at $80 = $480-$640.

Why?

Here's why....

Been there, done that - You can do it in the car, but it is hard to do. The best way is to pull the engine.

Disconnect the battery at the battery ground terminal, remove the fan and fan shroud. Both motor mounts will need to have the large nuts that secure them to the frame removed. The trans mount will also have to be loosened, and it is a good idea to remove the drive shaft.

I also had to disconnect the cat pipes at the headers to get the engine high enough to remove the oil pan. Be prepared to have to drop the steering rack and disconnect the steering shaft. The flex coupling for the steering shaft needs to be disconnected before you can get the rack out. You should disassemble the coupling by removing the 2 bolts that hold it together Jack up the engine with a wood block under the oil pan and watch for things that bind or hoses/electrical wiring that may need to be disconnected. I put a couple of wood blocks between the headers and the frame to support the engine. You will likely need to jack up the rear of the transmission as well to get the required clearance.

Scrape the pan mating surfaces clean as possible - old gasket stuck to the surfaces are a source of leaks.
There is a one piece oil pan gasket which will help re-assembly if you can find it. If you can't get this gasket, use weather strip adhesive to secure the cork gasket to the pan rails and the rubber strips to the bearing caps. Use lots of Acetone or MEK to clean the gasket surfaces so the weather strip adhesive will stick good. Read the instructions on the adhesive carefully to make sure the gaskets are permanently stuck in place and won't move when you slide the pan in place. Use lots of blue silicone sealer on top of the front and rear rubber seals where they mate with the pan.

Fill with oil, replace the filter. Reconnect the battery, switch the ignition on to enable the gages, but DON'T crank the car. Remove the distributor and use a 1/4" hex socket to turn the pump counter clock wise (same direction as distributor rotation) until you see oil pressure (an external gage is a great help long about now). And keep turning for about 30 sec after you see the pressure come up. A reversible drill is the best tool to use to turn the 1/4" socket. The pressure should come up to about 50-80psi with cold oil. Once you see good pressure, check for obvious leaks, and then and only then, lower everything back into place and bolt down the mounts and anything else you had to take loose.

Re-install the distributor and set the timing with the engine running using timing light (don't forget to disconnect the SPOUT plug and reconnect it when finished) 12-14 degrees BDC is good. Start up and check for leaks, let it warm up and look again for leaks. It took me 2 days plus, but I am old and slow, maybe your granny is faster.
 

90sickfox

Wasn't a pretty sight...and I've got big hands
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#8
  • Apr 3, 2017
  • #8
Its not that hard with an engine support bar from Harbor Freight.

Support the engine with the support, disconnect the steering shaft, the pressure line at the PS pump, the return line at the rack, the 2 sway bar end links, the 2 motor mount nuts, unplug the o2 sensor harness ( passenger side frame rail ), put a jack under the kmember, remove the 8 bolts for the k member, ....drop the k member. Now, there's nothing under the pan....easy peasy.

If doing the rear main seal its better to pull the engine to service the gasket and the seal if it's automatic. If its a 5 speed I'd do it the way mentioned above only with pulling driveshaft, exhaust h pipe, starter, fan, fan shroud, place plywood infront of radiator, shifter handle ( just the handle), clutch cable, speedo cable, place jack under trans, trans mount, cross member, bell housing bolts, remove trans, clutch pressure plate, flywheel bolts, and rear seal.

An AOD trans is a heavy mofo...but not the little t5.

See how that rear main seal complicates things. Smh

You gotta think like a flat rate mechanic.
 
Last edited: Apr 3, 2017
S

stang8384

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Jan 18, 2017
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Apr 4, 2017
#9
  • Apr 4, 2017
  • #9
Hey man that's some good info for the oil pan gasket. Is it really as easy it sounds?

I'm still trying to track down if the rear main seal is leaking. There is definitely seepage from the front and sides of the oil pan but not a noticeable drip. But there is a drip when the car is not running which is coming from near the top of rear of the oil pan where it meets the transmission? Then it drips down the cover. Attached photo is one I found in another thread but I have the same kind of leak.

Can both the oil pan gasket and rear main seal be changed at the same time or they totally 2 different jobs. If my rear main seal is leaking, I was hoping to put that off until it's time to change out the clutch.

Thanks again for all your input.
 

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90sickfox

Wasn't a pretty sight...and I've got big hands
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#10
  • Apr 4, 2017
  • #10
Its common for these engines to leak at the back of the pan. Because of the added severity of the seal repair I'd replace the oil pan gasket first. Also, check the rear of the lower intake where it meets the block....if it leaks back there it'll find its way down to that same area. That area back there is really hard to see...may need a mirror and a flashlight. A scope would be even better but expensive.
 
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