exhaust

[prkaye]

I have the Vetterman exhaust that came from Vans. There are sections labelled 2 and 3 (for cylinders 2 and 3) that fit together with slip joints and locking pins. These are welded to straight sections for cylinders 1 and 4. The ends of these sections are wider to accept a slip fit to sections 1A and 4A (that have to be trimmed by 1 inch for the O-320) that attach to the cylinders. But there is no mechanism for locking these slip fits (i.e. section 1A just slips into section 1, with no locking pin. Similarly for 4 and 4A). Am I missing something? How do these sections get secured together?

[Radomir]

Once you bolt the whole thing to the cylinders, they're not going anywhere.... Nothing to worry about

[gasman]

They are a slip joint.............. and don't get pinned for that very reason. Look at others photos you will see how the jount is used.............

[prkaye]

Except that in 2 other places the "slip joints" ARE secured with pins. The Vetterman documentation even refers to these as "slip joints secured with locking pins".

I guess the answer is that because of the configuration of them mounted on the engine, the two joints I'm asking about do not require the locking pins.

Next question - one of these slip joints isn't as snug as the others. Should I worry about exhaust gas leakage through it? Should I attempt to tighten it with a hose clamp? Should any compound or sealer be used in the slip joint?

Final question - what about the gaskets where they meet the cylinders... should I use any sealer or compound on these? Both sides?

[cjensen]

Originally Posted by prkaye

Next question - one of these slip joints isn't as snug as the others. Should I worry about exhaust gas leakage through it? Should I attempt to tighten it with a hose clamp? Should any compound or sealer be used in the slip joint?

Just some anti-seize is all you need there. The exhaust gases are moving away from those joints at a high speed, and will exit thru the path of least resistance, which is the end of the tube.

Originally Posted by prkaye

Final question - what about the gaskets where they meet the cylinders... should I use any sealer or compound on these? Both sides?

Nope...don't put anything on those gaskets. They are compression sealed.

[Special Delivery]

Originally Posted by prkaye

Should any compound or sealer be used in the slip joint?

If I'm not mistaken, I think Vetterman recommends the use 'mouse milk' (and nothing else) to lubricate slip joints... a little squirt every time you're under the hood.