There is enough material to drill a hole crossways and bolt the clamp to the rail. I usually weld the clamps to the fuel rail when I've got it set where I want it.

(edit)Picture-> http://www.rossmachineracing.com/imag ... injassmwithinjectors4.jpg

The square (exhaust) ports just show the detail better than the oval (intake) ports, that's why I posted that particular picture. All 16 ports are lofted like that.

I'm going to do a more formal write-up when I get closer to being finished. I'll have dimensions and CAD drawings and I might even make a few sets to sell if there is enough interest. I don't want to give a lot of detail since I change my mind a lot.

Attach file:

---

  CAT PEEKING FROM BAG.jpg (187.07 KB)

PM me your email address if you want those drawings. I can send them in pretty much any format.

Damm those look good :-O !
PM sent.

Thanks for the info, looks like my first guess will work with those clamps then.

My reasons for not sharing yet are pretty much the same, I'm still fiddling with it. Are your intake flanges going to accept 1.5" tubing as well or just the exhaust? I'm currently thinking mild steel because that's what I can weld with my equipment, the alternative is to go aluminium and pay someone to weld it all up for me.

Im keen for a set is the price is reasonable

It's all set up for 1.5 x 0.065 tubing. I actually made a set of the intake flanges in both steel and aluminum.

Here's what I have mocked up to check for clearances. This is not how it'll end up as the runners would be WAY too short. I'll probably throw a 90` elbow in there and put the rounded part facing up; closer to the hood.

Attach file:

---

  100mm Runners Mock-up.jpg (184.21 KB)


  Plenty of Room.jpg (166.48 KB)

Damm thats look good :O :D

You have a a round of thought right up my alley!

Very close to what I've designed! I may be interested in a set, how thick are they? I designed them to be machined from a 25mm thick bar. I'm after lowest profile possible because I want my manifold to wrap up over the rocker cover and leave all the space that side for a turbo exhaust manifold.

Quote:How does one determine how long the runners should be? Aftermarket manifolds appear to make them as short as possible for best packaging solution (like how can dual DCOEs fit into the car with air cleaners installed). But longer runners should boost torque? Unequal length runners smooth out the torque curve while equal length runners boost peak power (hence the term "peaky"). Where to start?