Keystone turbo kit for my 1950 M

Hi all, it appears my turbo kit has finally arrived. A week late, but better late than never.
My motor is still a 248ci. This ought to pep her up a little. I've prep'd the block for a oil return line, right where it looks like a fuel lift pump would go.
More to come when I get this stuff installed.
 
Be aware that a three main bearing engine with a turbo is like a variable speed fuse on dynamite. The higher the boost, the more rapidly the fuse burns toward unplanned self disassembly. The power found in a 560 was enough to tear out the first (M style) bearings. It was only 20% or so more power.
"Waking it up" can be fatal.
Of course, if the toy is already sucking excess funds, then the rate of fuse burning is measured in minutes, and the trophies will fill your den. Best of luck, toys are cool.
 
Jim, I always enjoy your comments. My MH44 also has 3 main bearings, always wondered why not 5.
 
How do the guys who bore and stroke theirs make them hold together? And the big 6 bangers only have 4 mains.
I wasn't planning on running 12+ psi of boost, maybe 6 or 8 at the most.
 
The bore spacing and (thus) length of crankshaft must be longer to accomodate the added bearings. Long stroke (under square) engines can (in the 1920s) when these were born) could be operated at less than 2000 and had enough crank stiffness to make it work. When we put 50% more air in the engine (and fuel) the engine makes lots more power. Compression (effective) can reach 200psi and real racing fuel is needed. Timing cannot be advanced much more than 15 degrees from TDC unless the engine speed reaches 3000 to 4000 RPM. which now again doubles the HP if the intake and exhaust valve timing allows for it (cam not stock).
Rods and mains and journals designed to be robust at 55HP look like pot metal at 125. Holding together is one thing, running for hours is another. Tearing down a M is trivial, but after 5 times real expensive, and real boring. One must realize also that the trophies are 20$ items. I understand toys and have my share of non stock stuff. (most of it is non stock) but it is reliable and stronger, not a design for detonation (in the big sense) No offense to all who put big money and time into racing or Pulling, one just has to be able to afford it. Jim
 

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