A couple of 8BA engine questions

[Kilohertz]

I pulled the original 2 bbl manifold in preparation for the 4 bll intake for the fuel injection I am installing, and noticed one intake runner was rusty. I also noticed some of intake bolt holes had water in them.

My question, do the intake bolt holes extend into the water jacket? If so, I imagine there should be thread sealant used when installing the manifold. I rubbed the rusty intake runner and it appears to just be surface rust, the back of the valve looks clean as does the stem. Hopefully not a cracked block and it's just sucking water from the bolt hole and under a faulty gasket.

Last thing, should I use Permatex Form-a-gasket on both surfaces to help seal the intake?

Your thoughts?

Pics of the rusty port and the port next to it.

Cheers

[marko39]

I like the idea of just using grease. If you use sealer on both sides it will be very difficult to remove in future. You can check both surfaces with a straightedge .

[flatjack9]

Intake bolts do not go to any water.

[Kilohertz]

Okay, just heading back to the shop to investigate further. I'll blow out the holes and poke a wire down to see if they all bottom...hopefully the water was just leftover from the rain we had a few weeks ago...but why the water damage on intake port cylinder 5? More investigation required.

Thanks!

Cheers

[Ol' Ron]

You might want to pressure test this block!!!!
G

[Bored&Stroked]

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My guess is that the engine managed to get some water in it . . . either through the carb, or via water that was sucked in under the intake gasket.

[Kilohertz]

Originally Posted by Bored&Stroked

My guess is that the engine managed to get some water in it . . . via water that was sucked in under the intake gasket.

I think that is my conclusion as well as investigating the gasket and intake manifold, there was very little material being compressed on that one port. I blew out all the holes and they all bottom out, no leaks.

I'm cleaning it all up and getting ready to mount the Fenton today.

Thanks all.

Cheers