Quote:
Originally Posted by RascalMafia
With your experience, who manufactured the best OTR engine and why?
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Cat builds a good mechanically sound engine with the 3406 base structure, I would have liked to see them actually update the fuel system once in the life of the electronic version of the engine, bosch based HPCR would have been nice to see like was used on the Navistar version of the C15.
Other changes that date back to the inception of the 3406 that could have been carried over from the 1693 were things like the 2 3/8" exhasut manifold studs per cylinder when the 1693 use 3 1/2" studs per cylinder, and then going away from the dual overhead cam of that engine when it was way ahead of its time.
The B/C model fuel pump is ridiculously over built, but from a performance and repair standpoint it is awful unless you have deep pockets, a pump cam for example is more money than an engine cam and it isnt over a foot and a half long, a bosch setup like mack used would have been much easier to service and less money in the long run.