Quote:
Originally Posted by ryanss22
Why would you not run this?
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The head, IMO, would be OK with the addition of a complete iron (or something similar) insert to hold the valve seats. The large OD of the 2 valve configuration allows for too much growth in the aluminum and the valve seats would not stay seated. A four valve arrangement (smaller OD)has proven itself in the duramax engine.
The block, IMO, might be OK with a very low HP build. You would just have to physically see one and pick it up to realize the fragile construction of the block. Cylinder pressures could be contained in the steel sleeves but the tension forces delivered to the block by the downward force of the combustion event would, IMO, separate the block at or near the cam bearings and along the cylinder to crankcase line.
I honestly no longer have the time or money to prove myself on this theory. I'm sorta hoping someone else will.