Just wanted to touch base with you guys on the manifolds I've done. Figured a cutaway would be a good place to start. These are actual manifolds my helper David cut in half.

The top one is the stock one, and the bottom one is mine.

Of course I picked on the drivers side because it looks the worst on the outside, but I was still shocked at what I found. I've numbered the "problem" areas to explain my thoughts on them.

#1. Notice how the runner is actually smaller than the port opening itself

#2. This little "crook" in the casting was a feeble attempt to direct the exhaust rearward I guess

#3. No "crook" here. If you look at it you can even see where some of the exhaust might actually be diverted the wrong direction because of the dimple for the steering column

#4. This is what I call the old right angle "dump and run". #3 suffers from this also. :(

#5. This one and #6 really get me. Notice how large the main runner is here with only 2 cylinders in the manifold so far

#6. Now notice how small the main runner is here after 3 cylinders

Now spend a little time looking at mine. I can find a couple of flaws in the design, but I hope you can clearly see why mine will flow better. :)

Can stock up-pipes be used with your manfolds/headers?

Sorry but no and trust me you wouldn't want to, but that's next weeks thread. ):h
In order to get the flow I wanted and the bellows location I moved the up pipe flange away from the head.

Man just when I decided I didn't need any more stuff for my truck you go and do this, now I'm going to have to spend some more $$$. Those manifolds look good!

definitely looks better.

Do you have a set of these ready for shipping, I am waiting for the twins and wouldn't want to wait any longer than nesessary. PM me total $ plus shipping to bc canada thanks.

Rick you should make a set to work a bit better on the twin setups. Just thinking out loud

Very nice looking manifold!!!:ro) I can't believe how much better it looks internally!!

Did you use any finite element analysis in your design? Just wondering as it looks like you spent some time thinking about this baby.

Thanks everyone!

Do you have a set of these ready for shipping, I am waiting for the twins and wouldn't want to wait any longer than nesessary. PM me total $ plus shipping to bc canada thanks.
Yes, I have them in stock. PM sent.

Rick you should make a set to work a bit better on the twin setups. Just thinking out loud
I'm thinking these will fit better. Looking for a guinea pig now. :)

Very nice looking manifold!!!:ro) I can't believe how much better it looks internally!!

Did you use any finite element analysis in your design? Just wondering as it looks like you spent some time thinking about this baby.
I had help from a ton of people smarter than me, but in the end we all pretty much agreed based on what I had already seen with the log headers.

Whats better about the twin turbo headers than the regular set?

Whats better about the twin turbo headers than the regular set?
There is a space issue

There is a space issue

Did you have a space issue? If so, How did you fix this issue?

Did you have a space issue? If so, How did you fix this issue?
The normal headers fit but its close , 1/8 "- 1/4 " between down pipe and the up-pipe flange ( atleast on my kit ) .

Thanks for the information trent. Just making sure I don't need to do any more additional modifications. :D

Rick's headers sure look sweet!

price?

Wish I would've bought these too. I'm sure they're awesome if they're anything like the up pipes.

Wish I had one of these instead of the bd manifold

Did you have a space issue? If so, How did you fix this issue?
A hammer to the down pipe:duh:

Here's a couple more pics.

Excellent job Rick, those are some very nice looking pieces!!!!