Aflac

Decided to finish up as much as the car as I could today. The weather was gorgeous for it. I got the dist installed (learned from you guys that the oil shaft is the root of it not going in 99.9% of the time), the drivers exhaust manifold and started working on the passenger side. I put the new studs in the manifold and put the exhaust flipper on and slid it into position. After it was all torqued, I crawled underneath it to attach it to the pipes. When I slid the flange up, I had no threads sticking out. After going back to NAPA to see if they had a different thinner donut, I finally went to a longer stud set than the stock. The only explanation I can think of why it didn't bolt up with the stock ones is due to the powder coat. The thickness of the coating must have taken up the slack. Any of you guys care to take a shot at the reason why? BTW, yes the flapper was tight against the manifold.

Paul L

The passenger side studs are longer for the heat riser valve. There is no gasket/donut needed.

Aflac

yes they are.. due to the heat riser flapper thingy...

Paul L

I don't have any further advice. Good luck.

Aflac

Wow... i just reread what ya said, Paul... why doesnt it need a donut on that side? I know it has a flat gasket with a fire ring between the riser and manifold, but the riser is beveled on the manifold mating area...

Paul L

Yes, it's a metal-to-metal contact with the heat riser. No donut needed.

*Edit*-I may be misunderstanding this. When I did the job on my 1979 there was no gasket between heat riser and manifold. But I did use a donut between the exhaust pipe and the bottom of the riser. Sorry if I was misleading you.

Aflac

paul, you are a god! THANKS!!!!

Paul L

See my edit before you think I am God. All this stems from a mis-guided attempt about six years ago to put 1969-style side-pipes on my 1979 (about $1,800). Yes, those noisy things most of you love. Snapped off three thread exhaust manifold studs getting the old off. Six hours labour in July heat with acetylene, drills, tap, etc. Put the sidepipes on with difficulty. Lousy fit. Cheezy fiberglass covers didn't fit. Looked like H**l. Flapped in the breeze in the centre owing to inadequate support. Tried to fabricate some bracket supports but it really was a tacky/Bubba exercise.The car was a candidate for NASCAR noise levels but without the necessary cam and other mods. Police loved to test their decibel meters. Those pipes lasted one week. Went back to stock with 2-1-2 and high-flow cat con. Total experiment about $3,000. Even with my 1967 I would not go through that again.

I recouped a few dollars by selling to a fellow in Michagon but those side-pipes were a waste of time and money. So flame away you side-pipe fans. Do you have ear protectors?

Ak. Mal

I see our vocabulary has extended into highly technical jargon.

Once you get yours back together, why don't you come fix my cooling problem...

Aflac

I should be able to get all of it done tomorrow.. as for your cooling issues Mal, dump the flex fan and go back to an original configuration.

barkingowl

Any pics?

Aflac

gettin ready to go out and start working on it...i'll post at the 1st break

Aflac

ok, here's the pics...pic 1 shows the gasket that it has between the flapper and the manifold.



#2 shows the flapper on the manifold. Note that flapper has a bevel similar to the donut would have.



#3 shows with the donut installed. I put the flapper with the flat side to the manifold. My assembly manual shows it that way.

Aflac

Well, I just got done bolting it on just as it looks in the 3rd pic without the donut.. it all fits like it should! Whooda thunk???

redwingvette

With that style "flapper" I wouldn't think you would have the need or the space for a donut. my "flapper" has the taper going the other way so a donut is needed.
Glad it worked out for you.

Aflac

Man that thing was drivin me nuts! I had that manifold off about 10 times making sure stuff was right!

SLine78

My 78 Assembly Manaul, does not show any donut gasket under the valve (section 8C) The end in picture 2 is designed to bolt directly against the flare in your pipe. The bottom of the valve is shaped just like the donut, so another is not needed. The 78 assembly manual shows the only side with a donut is the driver's side, between the manifold and and a small pipe extension. Picture 3 does not look right.

Mike

Aflac

Exactly. The gasket i was referring to was in pic #1. The correct mounting was pic #2. I looked at the pile of old pieces and mine did have the gasket between the flapper and the manifold.

Ak. Mal

I would in a heartbeat if I had been the person that installed it. That thing makes so much damn noise. It's louder than my truck from the front.

On another note, you gonna be at the KCCA Wally World cruise in on the 9th?

Aflac

It's really pretty cheap to go back.. I know I bought my old clutch for about 40$ and I'm sure you can pick up a factory fan pretty cheap to boot...Not sure If I will make it or not.. depends on if the carb shows up this week.