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02-23-2010, 07:42 PM
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CC Member
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Join Date: Sep 2009
Location: Hideaway, Texas,
TX
Cobra Make, Engine: Backdraft #318, 418 CI, 532 RWHP, Mass Flow Injected, TKO600-Road Race, BMW M3 Suspension, Race Springs (Wouldn't do it again, rough on the street).
Posts: 240
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Not Ranked
418w rear seal, what do I have here? See Photo
On my way to putting in a clutch kit on a new to me Backdraft, I want to seal up a very tiny oil leak at the rear pan or main seal, one drop a day, but it's aggravating. I still don't know which one is at fault, pan or seal. It only has 2,000 miles on it, but it looks like someone tried to seal it up before me, or it was assembled that way.
But, it looks like my 418w is a two piece seal. I'm new to Fords, but not to race motors, so I can probably handle it if I know what's in front of me.
Is there any quicksand I'm about to get into here replacing the seal and oil pan gasket? The block number is D9AE-6015-ED17.
What a great source this board is! I guess everyone knows that by now.
Thanks,
Wayne in Gilroy, CA (where it's raining once again and forever) |
02-23-2010, 07:51 PM
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Senior Club Cobra Member
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Join Date: Jul 2000
Location: Chilliwack,BC,
BC
Cobra Make, Engine: F5 Roadster
Posts: 1,422
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Not Ranked
leak
Hi,
Looks like 2 piece seal, that's hard to do. Unless you have alot of oil a main seal probably is not the problem.
I would look at the rear of the intake manifold and valve covers.
You could put a new gasket on the oil pan but use a little bit of gasket sealer on all the surfaces, even the rubber end seals.
Perry. |
02-23-2010, 08:01 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,452
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Not Ranked
Any leak on a SBF shows up on the front of the block plate. Doesn't matter where it's leaking, that's where you'll see it. Take a close look at the front cover and fuel pump boss.
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02-23-2010, 08:02 PM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,407
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Not Ranked
I just went thru this too. Depending on the year of your block, you could have a 2 piece or a 1 piece seal on a Windsor block. The two piece seal is located under the last rear main on the crank. A one piece is is accessable from the rear of the engine. Many engine shops machine the older 2 piece seal blocks to accept the 1 piece seal. All that silicone I see in your photos is there to seal the back of the pan I think. a very common place for leaks. Looks like you have the 2 piece to me...
__________________
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Last edited by Blas; 02-23-2010 at 08:15 PM..
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02-23-2010, 08:24 PM
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CC Member
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Join Date: Jul 2005
Location: Bartlett,
Ill
Cobra Make, Engine: Everett-Morrison LS1
Posts: 2,448
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Not Ranked
The place yours could be leaking is between the mating surfaces of the cap and block--there is about a 1/2 inch area that is steal to steel--another area is sometimes the bolt holes for the flywheel will go thru and also it appears that yours has some extra holes drilled possibly for balance that could go thru also
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02-23-2010, 09:34 PM
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CC Member
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Join Date: Nov 2000
Location: Flower Mound, TX,
tx
Cobra Make, Engine: Lonestar LS 427, Keith Craft 501,Toploader
Posts: 883
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Not Ranked
That's just your oil pan gasket. Somebody just didn't put in in too well and smeared a bunch of silicone on the outside to hopefully stop the oil leak, (it never works). You'll just need to install a new pan gasket and don't forget to put sealer in the corners.
__________________
" It ain't no big deal" 
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02-23-2010, 09:44 PM
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CC Member
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Join Date: Feb 2001
Location: BRADENTON,
FL
Cobra Make, Engine: KIRKHAM 427 S/C, SHELBY 427 ALUM. STROKER
Posts: 1,396
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Not Ranked
Check the intake at the rear valley. Notorious for leaking and will end up dripping off the pan & block plate.
__________________
"When Injustice becomes Law,
Rebellion becomes Duty." T. Jefferson
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02-24-2010, 12:01 AM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
Use a 1 piece gasket from Fel Pro.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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02-24-2010, 09:37 AM
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CC Member
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Join Date: Jul 2001
Location: randleman, NC,
Posts: 407
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Not Ranked
Had the same problem a while back. Turned out to be the oil pan gasket on the after market oil pan. Pulled the pan, put on a new gasket with lots of silicon sealer (problem was the pan didn't really fit around the back very well) and reinstalled everything. This time it sealed up just fine and hasn't leaked since. Removing the rear seal from underneath the car without a lift is an invitation to an oil leak. |
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