Pipe of Agony O-Ring and Securing Ring Prep?

[rundmc]

Hey all,

When I disassembled my intake manifold, the pipe of agony already seemed kinda loose in the mixture unit and came out with a rattle. I later found the brass securing ring and the o-ring in the valley absolutely slathered with Permatex gasket sealer.

The pipe itself was caked in it as well - I guess by the P.O. ?

Anyway, I cleaned everything up, careful with plastic scrapers so as not to score the pipe itself, and removed all of the Permatex.

When reassembling, I was told to prep the o-ring with grease. Any particular kind? Or should I use Permatex again? (Frankly it looked like a hack job mess when I removed it.)

Thanks,
RUNDMC

[sean]

When reassembling, I was told to prep the o-ring with grease. Any particular kind?

Most any kind will do. You just want to lube it to help ease the pipe in and also add to the seal.

[rundmc]

Thanks

[DMCMW Dave]

The brass ring is supposed to be "staked" in place, i.e. a tight fit. This is about impossible to correct with the air metering assembly in place on the engine. So - someones workaround was gasket glue.

[sdg3205]

Despite my best efforts, my brass ring never stays in place. The rubber washer does, which prevents the vacuum leak, but I was wondering if a little gasket sealer on the washer then the ring would be permissible.

[opethmike]

Most any kind will do. You just want to lube it to help ease the pipe in and also add to the seal.

Yes, one should always use lube to ease it in.

[sdg3205]

Yes, one should always use lube to ease it in.

Especially if it's their first time.

[sean]

Yes, one should always use lube to ease it in.

Especially if it's their first time.

Dirty, dirty, dirty......

[WelmoedJ]

If the brass cup does fit tightly any longer there's one way to make it larger.
Carefully tap the material to make it get a larger diameter.
You do that from the inside out all along the "ring" that should keep it tight.

My car was missing the brass cup and I was told it's no longer available.
I therefore used a large copper washer and tapped it until it was a bit larger than the opening it has to fit and stay in.
After that I put the O-ring in and used a pipe (approx 17mm diameter) to press the copper washer in until it locked the O-ring tightly.

It's a tedious and time consuming job, but it works.
Don't use any sealant also because you need to be able to replace the O-ring at some point in time.
You grease the tip of the pipe all around before pushing it in.
Any thick grease will do.

[Bitsyncmaster]

I used a thick loctite to lock the brass ring in with great success. Of course the mixture unit has to be out of the car and clean the areas to get a good bond. Also keep the loctite off the O-ring.