Quote:
Originally Posted by rbattelle
Good points. The high heat is good for the turbine, but I'm not sure about the effects of soakback with all that heat concentrated in the lifter valley. I guess it can't be too bad or they wouldn't have put it in service like this.
As for compactness, you still need a manifold on the outside of the vee. I thought those heads looked very wide with the intake manifold cast in.
Ryan
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The Oct. edition of Diesel Power has an artical on this new engine, including pictures at several different angles.
If you get the opportunity to check this out, there is a good shot of the full rear of the engine, showing the bulge in the heads for the cast in, intake manifolds. You can also see where the top half of the intake manifolds are integrated into the the rocker arm covers.
IMO, this configuration is quite a bit narrower than any of their previous P.S. engines with the conventional exh. manifolds/exh.pipes/to turbo platforms.
Also, you can almost see where there might be room in the valley for some air from the front to blow through, helping with the heat soakback problem.
Ray