[DeTomaso] Anyone interested is having some sheet metal "tunnel ram" type intake manifolds made for high port heads?

[Ken Green]

Dave,
   
        I don't see how that helps a lot for a twin turbo motor, and it has the added cost of the 8 throttle bodies and syncing the butterflies, and I still would need to run the throttle bodies into some kind of plenum or plenums etc. fed from the turbos.  The tunnel ram approach just needs a couple holes on the sides to mount throttle bodies.  That seems a lot simpler to me unless you have a source for low cost throttle bodies?
   
        I think that 8 throttle bodies are the optimal solution, but the advantage may not be worth the cost for a weekend racer unless you can fabricate parts at home.  The sheet metal manifolds are not cheap either, but seem to be cheaper.
   
  Ken

Dave Williams <ronin at aristotle.net> wrote:
  Ken Green wrote:

> I'm exploring having a manifold made for EFI & turbos with Yates heads. 

If you make some wedge plates, you can bolt IR throttle bodies right 
to the cylinder heads. The ones I used were 1" thick at the manifold 
end, 1/8" at the valve cover end, and flared from 4V port size to 2-3/8" 
bore throttle bodies.

Making the wedge plates is a bit tedious, but it's a h*ll of a lot 
easier than making a sheet metal manifold...

http://www.bacomatic.org/~dw/Petrelli438/MP-438-intake-13.jpg

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