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Question About Oil Pan Gasket

 
Old 04-15-2019, 10:23 AM
  #1  
Wayne88
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Default Question About Oil Pan Gasket

Iím going to change my oil pan gasket, and will order the Fel-Pro one piece pictured below.

Question is: Will I run into any problems with this? It says 1 piece then it says 2 piece seal, not sure what that means.

Also, the small block gasket pictured below had 2 different types, will I run into a fitment problem with the BB gasket? [My car is a 427].

I appreciate any help. Wayne

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Old 04-15-2019, 10:29 AM
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If your car has the original pan, order the gasket with the smaller radius. Many pans changed this dimension in the 1970's, so if your car has a later replacement pan, then order the one with the larger radius. I only remember this for small blocks, but big blocks may also be the same way.

It is best to check pan first if any question. My friend bought the wrong one from local NAPA, and they exchanged it for him when he brought it back. Something to consider..........buying locally if in doubt.

Larry
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Old 04-15-2019, 11:14 AM
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If what I remember, that front radius difference, thick/thin gasket only applies to small blocks.
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Old 04-15-2019, 11:35 AM
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When you get the pan off, make sure the bolt holes are not dimpled from over tightening. If they are, pein them flat and true. Make sure all the bolts are correct length so you don't have any oversize and bottom out. This will create a leak for sure. Torque for the pan bolts is 12 ft lbs. Dennis

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Old 04-15-2019, 11:56 AM
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Originally Posted by Desert Nomad View Post
If what I remember, that front radius difference, thick/thin gasket only applies to small blocks.
That's true
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Old 04-15-2019, 11:57 AM
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Originally Posted by Desert Nomad View Post
If what I remember, that front radius difference, thick/thin gasket only applies to small blocks.
That's what I'm wasn't sure about.
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Old 04-15-2019, 12:33 PM
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Default Oil Pan Gasket

Just a comment, I like Fel Pro items, but the bright blue shows up, and paint doesn't really stick well to these rubber/silicone gaskets. Mr Gasket has the equivalent, in a black/dark gray color, with compression stops in the gasket and all.
Not trying to sway your choice, but just to let you know there are options. I just bought the BBC Mr Gasket from Summit, part number MRG-6663G, and the price was $38.41

Last edited by playzwithcars; 04-15-2019 at 12:35 PM. Reason: adds
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Old 04-15-2019, 01:33 PM
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Originally Posted by Bluestripe67 View Post
When you get the pan off, make sure the bolt holes are not dimpled from over tightening. If they are, pein them flat and true. Make sure all the bolts are correct length so you don't have any oversize and bottom out. This will create a leak for sure. Torque for the pan bolts is 12 ft lbs. Dennis
Actually the spec from Felpro is 8 ft lbs for the small bolts, and 18 ft lbs for the large (corner) bolts.
As you'll see in this thread, mine held oil for 4 years...then developed a small leak.
Re-torquing the bolts stopped the leak.

https://www.corvetteforum.com/forums...rque-spec.html

Their oil pan gasket is 1-piece.. Likely discussing their rear main seal, which is 2-piece (has to wrap around the crank).

Last edited by SDVette; 04-15-2019 at 01:53 PM.
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Old 04-16-2019, 12:17 AM
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Since we're discussing oil pan gaskets, I've got a dumb question to ask the experts. I'm in the process of changing my oil pan out from a 4qt. to 5qt. I have the Fel-Pro one pc. gasket. The instructions say to put the gasket on the block using those plastic studs to hold it up. Seems to me it would be easier to lay the gasket down in the pan and raise it up and bolt it in. Otherwise I could see part of the gasket hanging down while your trying to line up the pan. The service manual tells you to lay the gasket on the block first also. Is there a reason to do it that way. I'm thinking that they assume that you have the engine in a stand up side down, which in that case makes sense to do it that way. Mabey I'm missing something here.
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Old 04-16-2019, 10:57 AM
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Originally Posted by Desert Nomad View Post
Since we're discussing oil pan gaskets, I've got a dumb question to ask the experts. I'm in the process of changing my oil pan out from a 4qt. to 5qt. I have the Fel-Pro one pc. gasket. The instructions say to put the gasket on the block using those plastic studs to hold it up. Seems to me it would be easier to lay the gasket down in the pan and raise it up and bolt it in. Otherwise I could see part of the gasket hanging down while your trying to line up the pan. The service manual tells you to lay the gasket on the block first also. Is there a reason to do it that way. I'm thinking that they assume that you have the engine in a stand up side down, which in that case makes sense to do it that way. Mabey I'm missing something here.
I believe they say to seal around the front and rear curved areas of the block with some silicone. That may be one reason. And the pins they supply seem to hold this area secure. I remember helping my friend do this job and we also made up about 6 metal studs that we also screwed into the block temporarily to better help alignment during assembly. Used nuts on these when first pan installed until we got the regular pans bolts in on the remaining holes (finger tight). Then removed these temporary studs one by one and replaced with the correct bolts. Then tightened everything up to spec.

Larry
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Old 04-16-2019, 11:22 AM
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Originally Posted by Powershift View Post
I believe they say to seal around the front and rear curved areas of the block with some silicone. That may be one reason. And the pins they supply seem to hold this area secure. I remember helping my friend do this job and we also made up about 6 metal studs that we also screwed into the block temporarily to better help alignment during assembly. Used nuts on these when first pan installed until we got the regular pans bolts in on the remaining holes (finger tight). Then removed these temporary studs one by one and replaced with the correct bolts. Then tightened everything up to spec.

Larry
Thanks Powershift. I was thinking about making some extra studs out of some cut-off bolts for this that reason. Just want to do this job once so I'll try to do it right.
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Old 04-16-2019, 11:55 AM
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Originally Posted by Desert Nomad View Post
Since we're discussing oil pan gaskets, I've got a dumb question to ask the experts. I'm in the process of changing my oil pan out from a 4qt. to 5qt. I have the Fel-Pro one pc. gasket. The instructions say to put the gasket on the block using those plastic studs to hold it up. Seems to me it would be easier to lay the gasket down in the pan and raise it up and bolt it in. Otherwise I could see part of the gasket hanging down while your trying to line up the pan. The service manual tells you to lay the gasket on the block first also. Is there a reason to do it that way. I'm thinking that they assume that you have the engine in a stand up side down, which in that case makes sense to do it that way. Mabey I'm missing something here.
The gasket is stiff enough to allow the plastic studs to hold it up. This is a SBC but a BBC should be the same. Here is a pic of the studs and the gasket. The studs will also support the pan, just push it over the studs, and then you can install the screws.


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Old 04-16-2019, 12:27 PM
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Thanks "Mike67nv", nice picture. Will do the same.
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