[Ross Nicol]

Hi Pat and Burns
I don't know if you guys saw a recent post of mine where I mentioned having improvements made to my DC&O throttle bodies. I had quite bad stiction when first applying the throttle after being off it and this caused quite a bang when the butterflies finally opened. It turns out that there are a few problems with the manifolds as they come from DC&O and RF were buying raw manifolds and having throttlebodies fitted of a much higher standard by a Ford engine guru here in Melbourne. He explained the problems to me
1/ Throttle body machining not accurate
2/ Shafts (which float in the bearings) allow jamming of the butterfly edge.
3/ Shafts not straight and coupler between pairs not helping trueness.
4/ grub screws on shaft couplers not allowing accurate adjustment

All these things are sorted on mine now and I have sprung loaded screws that adjust each individual trumpet accurately. A couple of things I learned along the way, you should adjust the trumpets with the throttle totally relaxed and also as the throttle bodies begin to open.Also I found it necessary to use green loctite on the adjusting screws to lock them after adjustment. I'll take a photo of the new layout if you would like to see it.

Ross