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Old 05-03-2022, 02:58 AM   #1
mcpotus
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Default Too much RTV for oil pan?

I'm installing the oil pan on my new block and I'm not sure if I've used too much RTV. I used Permatex Ultra Black fwiw. I don't want to end up with RTV on the inside and have that clog up the oil pick-up, that's my only real concern at the moment.











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Old 05-03-2022, 06:16 AM   #2
KillerBMotorsport
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That is a lot. The safe assumption is that it looks the same on the inside as well. Is this enough to cause alarm.... tough to say, but I'd change it since the engine is new, out, and you have easy access. If this were a 200K mile beater car/engine I might feel differently.
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Old 05-03-2022, 06:50 AM   #3
rtv900
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that's a lot
people always over do it with sealants
a super thin film will easily fill that space when two surfaces completely touch
putting it on like toothpaste just means 98% of it has to be displaced somewhere
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Old 05-03-2022, 10:45 AM   #4
a5m
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Quote:
Originally Posted by rtv900 View Post
that's a lot
people always over do it with sealants
a super thin film will easily fill that space when two surfaces completely touch
putting it on like toothpaste just means 98% of it has to be displaced somewhere
I'd listen to this guy. I mean, look at their username.
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Old 05-03-2022, 12:04 PM   #5
mcpotus
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Default

Thanks for the help everyone - I'm going to redo it today. Not looking forward to doing it again for the 3rd time, but it is what it is.

Quote:
Originally Posted by KillerBMotorsport View Post
That is a lot. The safe assumption is that it looks the same on the inside as well. Is this enough to cause alarm.... tough to say, but I'd change it since the engine is new, out, and you have easy access. If this were a 200K mile beater car/engine I might feel differently.
Oh hey KBM - installed your oil pickup and windage tray in there too
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Old 05-03-2022, 01:10 PM   #6
Markuli
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Quote:
Originally Posted by a5m View Post
I'd listen to this guy. I mean, look at their username.
Lol

OP, you could always put on a glove and smear a 1mm layer evenly on the pan surface. That's what I did, I even think I was a little light in some areas and no leaks so far. I got about a 1/8" bead that squished out around my pan when I torqued up the bolts. Just add a tiny bit more in the grooves so it stays even across the top.
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Old 05-03-2022, 03:32 PM   #7
KillerBMotorsport
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Quote:
Originally Posted by mcpotus View Post
Oh hey KBM - installed your oil pickup and windage tray in there too
Awesome. Thank you for your support and enjoy
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Old 05-03-2022, 03:45 PM   #8
mcpotus
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Default

Related question: since I'm redoing the RTV, should I be using Ultra Black or Ultra Grey? I've seen people use both so I'm not sure what is ideal.

Initially I used the Black since Permatex's website showed that it was recommended for oil pans but the Grey didn't mention that it was suitable for oil pan gaskets.

EDIT: I removed the oil pan and there was definitely a decent bead of RTV on the inside. Interestingly, it hadn't crossed past the block's mating surface so I think technically it would've been safe, but there was definitely a risk. Glad I removed it.
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Old 05-03-2022, 11:32 PM   #9
mcpotus
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Redid the RTV and spread it using a gloved finger:







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