Quote:
Originally Posted by Schurkey
1. I would not want a lump of RTV to come loose inside the intake port, and make it's way into the cylinder. The RTV will be exposed to manifold vacuum, significant air velocity pulses, and gasoline (liquid droplets, and vapor.)
2. Most RTV Silicone is not compatible with gasoline. Gets soft, degrades, loses integrity.
https://www.permatex.com/products/ga...-maker-7-5-oz/
Under the "Instructions" tab:
" NOTE: Not for use as a head gasket or on parts in contact with gasoline."
The sooner you remove the RTV Silicone, the better. |
Ah, crap.
It's a good point you make.. My original plan involved a rubber piece of plug (actually a rubber grommit for sealing holes in sheet metal). It filled the hole nicely and had enough height to seal off the "side" of the hole. But I reallised that under suction it could move down a bit on the "port" side and act as a sort of one-way valve (but in the "wrong" direction). Then I thought of sealing it in place with the RTV. And that's when I thought it would be easier to just make the plug *out of* RTV. It would be much easier to plug if the hole broke through straight down. It's the "side cut" shape of it that makes it so hard to make a stable plug. I was also wondering about epoxy but I was chicken to try that. RTV so much easier to work with.
I can just try sealing the threads again. I felt a lot better, though, having something to physically block off that big "suction hole" pulling on the studs..
Quote:
Originally Posted by Schurkey
How deep is the rocker stud hole below the actual rocker stud? Can you thread the hole the full length, and then screw-in a brass or aluminum set screw into the hole from the bottom, sealed with Loctite thread locker AND LOCTITE "ACTIVATOR"?
If this were me, I'd go back to using Loctite 592 thread sealer on the rocker studs, and the aforementioned activator. You tried the sealer before, but not with activator.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 |
I think it’s about 5.5mm from the bottom of the stud to the bottom of the hole. The hole comes up the side, though, maybe 4mm. So there’s not a lot of space where it is clear “straight across” even though there’s a kinda large space under the stud..
Sam