Kelly,

Here are two approaches to using the motor plate.
The wide one will probably have to have diagonal braces
forward to the nose of the Ross PSRU.

The big problem is the hard points on the firewall are really too
close together to make a wide motor plate really practical.

I don't have a drawing on the exhaust manifold you are going to use
so I don't know where to put the turbo. From the looks of it
it needs to go back towards the firewall.

In that case I would make my own exhaust manifold  out of RB Wagner
1-1/2 inch 304 SS pipe bends with .140 wall. Cheaper too than any
off the shelf turbo manifold. 1-1/2 inch pipe is really 1.9 inches OD.


Paul Lamar

      Paul,

        I need to clarify your comments. You say the firewall hard points
 are too close together to make a wide mount practical. Is that horiz. or
 vert. or both? 

horiz.

I had envisioned all three members of the left and right
 mount coming together on the thrust line (which is also the left and right
 cowl line). The lateral tripod member directly follows the thrust line.

 Not too good on thrust line. More room for the turbo and manifold a bit lower
centered on the exhaust ports.

       Is the problem you see with a wide plate structural or a space
 problem? Also why would diagonal supports to the nose of the Ross PSRU be
 necessary?

If the plate is too wide it might flex fore and aft too much so you
might need to stiffen it up with diags to the nose of the PSRU.

       My Turbo manifold is a HKS like Ernesto and Chrissi have. 

The HKS makes it even more difficult to use a wide plate mount because
you lose a bit of positioning flexibility for the turbo.

Can you make a sketch of that HKS manifold for me?

I will
 probably fly intially without a Turbo. I will mock up a mount to make sure
 it will clear turbo and manifold before cutting any metal.

       Could you move the inlet for oil cooler and intercooler to below the
 spinner and fair into cowl for effect?

       Thanks
       Kelly

What size and shape of an opening do you want?

Paul Lamar
 
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