Webers on 3.0 - leave distributor vacuum hoses disconnected?

[Christien]

Never seen these before - they look like a lawn sprinkler . Should I just pull them off? Bung them up or leave them open?

To clarify, it's an 82 sc engine I bought to transplant into my 72.

[Flat6pac]

Well, you need the high rpm advance the distributor offers.
Bruce

[Christien]

So which one is that, and what do I plug it into?

[snbush67]

Unless you drill holes in the manifolds to get vacuum you will get no vacuum advance.

It doesn't mater if you plug the canister or leave it open, I plugged mine just because it looked like it needed a cap.

Set your distributor so that you get total advance at 3000 rpms and see how it runs. You may have to adjust your idle and perhaps the timing a bit to get it to run smooth for the street.

[Eagledriver]

You can't use the vacuum system with your carbs. Your dizzy has a very limited amount of centrifugal advance. You can try setting about 10 degrees BTDC at idle and see what you get. I'll bet you only get to about 25 degrees total at 5k and up. Driveable but missing alot of power. You'll need to recurve yours or get a 78-79 dizzy. You can do it yourself, there are threads on what the guts look like. You'd basically need to bend the stops to allow the weights to move more. You'd like to get at about 30-33 degrees of advance at 5k and less than 10 at idle.

-Andy

[Christien]

Good stuff, guys - thanks! I'll look into recurving it myself.

[Christien]

I did some reading on this - does it make a difference that I have MSD ignition and coil? If not, I'll probably just see if I can trade it for an earlier SC dizzy.

[PFM]

Lock it out and grab an MSD 6AL-2 you can make your own advance curve. On EBay new for reasonable money and have a rev limiter built-in.

[Christien]

What do you mean by "lock it out"?

[snbush67]

I think PFM is referring to disabling the weighted advance by locking the advance plate. Then you program the advance curve using the MSD.

I think the last time I read anything about this was that you could only get limited degrees of advance from the MSD programmable when using a stock dizz, I am not sure.

Do some research first before diving in, if the spark isn't advanced correctly you can cause some serious damage. Rotor Phasing...

[snbush67]

MSD 6AL-2 Programmable Ignition?

MSD Success

[Christien]

Would the dizzy from my 2.4 work ok, or is completely different?

[Christien]

Never mind - of course it won't work, it turns CW. duh...

[BURN-BROS]

Hi Christien,

If you indeed have a 82 SC distributor then you can run it @ 8 deg btdc @ idle. You can try 10 deg which will get you 30deg @ 3000 rpm which is about all you can take at that rpm. It's not ideal but can get you by for a while.

I can recurve/rebuild your dizzy to any spec you require as well as remove the vac advance.

[Christien]

So what's the best option, recurve, get the 6AL2 (I only have the 6AL), or just get a 78/79 dizzy?

[BURN-BROS]

I have never messed with the 6al2 so I cannot comment. You could spend money on another dizzy and find that it requires a rebuild so be careful what if you go that route. rebuilding or recurving yours gives you the knowledge that it ready for years of trouble free service.
If you do decide to find a different distributor 78,79, and even an 80 will work.

[Schmierung]

Should you decide... I have a 1980 distributor ready to go. PM me for details.

[lupin..the..3rd]

Originally Posted by Christien

Never mind - of course it won't work, it turns CW. duh...

why would it matter which way it turns?

[snbush67]

Originally Posted by lupin..the..3rd

why would it matter which way it turns?

It doesn't matter which way it turns, unless you want the spark to be sent to the right cylinder.

In an SC the distributor turns CCW, so I think that the distributor gear will not match the crank gears.

Even if you could jam it in there you would still have issues because it would fire out of sequence, I suppose you could just rearrange the wires but it would probably only be a matter of seconds before the distributor gear was shredded.

[PFM]

The gear will not mesh period, replacements are pricy, the centrifugal advance will not work. You could change the gear on the crank to spin the distributor the opposite direction.