Oh, so that's why the P400 is stronger.....

[btfarm]

why does it have to be cast why not billet?

Billet would be outrageously expensive...
That's a mighty handsome piece!

 

[ak diesel driver]

Billet would be outrageously expensive...
That's a mighty handsome piece!

more expensive then a custom casting?

 

[bison]

I think so,

Casting it is about $500 one off, if i provide a workable patern.
Making the patern is gonna be the expensive part if they have to build it too.prob looking at a couple thou for that one.

Ofcourse final machining comes on top,some of that i can do myself.

 

[spdgofast]

Anyone know what compression ratio pistons come on these none marine P400? I've heard 20.2:1 and 21:1 , I guess not much difference unless your putting over 20lbs of boost to them.

 

[robzombie4551]

You would for best performance want it made out of the same exact material to have as close as possible thermal expansion and mechanical properties as the block so it wouldn't change the any bending stress on the block being that big - long and that much material bolted that tightly to the block. Its ok for shorter smaller pieces to be of appreciably different but that big might cause problems.

Thank you. I've been preaching that and it has fallen on deaf ears.

I don't want people to experiment and then toast thier motors needlessly.