Dan H.

I have the felpro one pc oil pan gasket. I also got the felpro timing cover gasket set. When I started my car for the 20 minute break in, I had a substantial oil leak at the front of the oil pan. Probably about 1/2 a quart over 20 minutes.

My question is do I use both the black gasket that came with the timing cover gasket kit AND the one pc oil pan gasket? Seems like the one pc gasket should seal this up alone, but I'm not sure if I'm overlooking something here? I'd like the second attempt here to cure the leak.

Roco71

I know that I did not. What year is your car? 75 and newer use a different oil pan and the front seal is a different size.

7T1vette

It appears that you allowed the black RTV to completely set-up before installing the pan. That could cause you a problem, if there is a bit too much RTV in those corners.

Best way to do that is to just let the RTV get a bit tacky, then put the pan in place and put bolts in and just snug them down a bit. THEN you let the RTV set up and, finally, torque the bolts.

If you have excess RTV in those joints, it could cause the pan to warp.

Dan H.

My car is a 71

The pic actually shows my second attempt. In the middle of the job I had to leave for the emergency room. Have a new gasket delivering this week to take another crack at it.

In my first attempt, I did not RTV the corners thoroughly. I think this also helped the oil leak.

Roco71

Make sure that the corners are clean and there are no traces of the old gasket.

7T1vette

The "emergency room" doesn't sound good...

Good luck on the second attempt. I don't think you needed to buy another one-piece gasket....just clean off the RTV and use it again. Unless it was damaged, it should last for many removals.

Dan H.

How do I remove the old dried up RTV?

Roco71

I would think that it would just peel off.

7T1vette

TimAT

Wipe the areas you're going to put the RTV down really well with alcohol. RTV won't stick if there's any trace of oil.

George Ries

Did you use felpro 1880

George Ries

Do not use the black rubber that came with your timing cover set

Dan H.

Thank you!
Kinda what I thought, but there have been several times where my instincts have been wrong

Dan H.

I used 1885, it claims gen 1 small block 350 1955-1974. Also says "Thin Front Seal"


1880 states "Thick Front Seal" covering years 1975-1979 gen 1 small blocks.


My car is a 71 LT-1
Am I using the wrong one and don't realize it?

77C34SPD

That depends, are you using the original oilpan?

George Ries

it shouldnt have leaked at all i have used the 1880 on 68 oil pans its a little tight but will go on

George Ries

you may have to use longer bolts to get it started and then once its on replace with the old bolts one at a time

Dan H.

George,

Thank you for your response. I stopped at auto zone on my way home tonight and picked up an 1880. It lays on the pan nicely and I think it'll fit better. Some night this week I'll get it on there.

I knew the pan wasn't original, it's a 6 qt gm pan though. I just didn't think about it being different.