Build your own crossover headers

[Steve Briscoe]

Originally Posted by Mark Worthington

Steve, let us know if you'd ever consider renting them out.

You bet. I need to call them next week and get a few questions answered.

Steve

[Big-Foot]

I've used flexible exhaust tubing on couple of occasions to model a particularly tough tube.. Getting the tubes to be equal length adds in a great deal of complexity in the design but it's one of those details that pays great dividends...

How much is that modular system?

[Kalun D]

Well if you're using stainless in 1-5/8"DIA (the most common small block size), then the only CLR available is 2.5" and 4" so you're hosed because these blocks are only available in 2", 3", and 4", CLR's.

Also note that it's not that hard to build one side at a time so you could buy a 4 cylinder set for $350 less than the V8. .

2D Cardboard patterns work although they are a bit tedious. These plastic blocks would probably speed things up.

The only other problem I see is the lengths while adjustable are fixed to the increments of the segment length. This might cause issues in real tight clearance spots (all GT40's) where you need to measure down to the 1/8" or even 1/16".

Your still going to end up cutting a little long and grinding down to fit, and that's where it takes time.

[Kalun D]

Originally Posted by patbarry

Speaking of headers, here is what was supplied by RF. Having no experience with individual pipes, is this amount of seperation normal? In order to get them into the collector they really need some force to pull them in. I am concerned this may not be best for either the aluminum heads or the exhaust assembly. Thoughts?

This is probably not too bad. Especially if you already tightened the bolts at the head flanges.

It might be easier to assemble one primary at a time and leave all the bolts really loose until all the primaries and collectors are in place and then tighten everything.

I know on my setup you couldn't even get it together like this with all primaries on before the collectors, too much friction. I have a written assembly order on mine.