The Stovebolt Site Forums The Shop Area Engine Shop Split the exhaust?

OK. I'm new to this...been coming here about a month, and have seen numerous references to splitting the exhaust manifold for dual exhaust. I just can't picture the split exhaust manifold. Does someone have a picture out there, or can you describe it for me? Thanks!

JaNeily, I've seen them and have them done 2 different ways. The old method and in my opinion the best, was actually cutting the manifold in half. Welding the ends closed, and putting an additional outlet on the half that didn't have one before. This method is similar to making a set of headers out of the stock manifold.

The second method is to put an outlet on the opposite side of the original outlet (towards the firewall) and weld a plate inside of the middle of the exhaust manifold. (My 46 has this type.) There is a small diameter hole in the plate (inside of the exhaust manifold) to equalize the pressure, between the two separate (but still together) halves.

Hope that helps answer at least part of your question.

I have one like I described in the second version that I can take pictures and send to you if you would like.

As for the other, I'm sure if you look hard enough, you can probably find a picture of the actual split manifold. If not, I know there are pictures of fentons (headers) around the site, and they would be close to how this type of split looks.

Here is a split manifold I got from Kansas Kustoms.
[img]http://image46.webshots.com/47/7/85/51/378178551rCoijO_ph.jpg[/img]

well try the link instead.
Manifold

Thanks! Looks good. I'll have to play. I'll have to have someone do the welding for me, as I'm not too good with cast iron...

I also have the manifold from Kansas Kustoms. Its great!!

JaNeily, if you are just looking for the dual exhaust look, I kept my single pipe manifold and went to Tuffy where they took the first exhaust pipe and brought it into a muffler with two pipes out. They then custom bent two pipes that come out of the back. Didn't cost more than $200 for all and they did the labor. (By the way, if you have an under bed spare tire mount, you will probably want to relocate it to a side mount spare if you are going with dual pipes.)

Have fun!

Mama wants a little exhaust noise, so it'll be dual all the way. I've seen V8's split after the catalytic converter, and then dual straight pipes that sounded pretty cool...and yes, I'm having fun!