Hi all, just got off the phone with an engine rebuild place, was asking some questions.
First ? I have a 251 which has been rebuilt once in 1956, stamp says Using the "Chrysler Method". My ? was, can this engine be rebuilt again, or would the cylinders need to be sleeved.
His answer was that it shouldn't be a problem.
2nd ?, what can my current engine handle, as far as rpm is concerned, the engine is a 218 long block, not rebuilt, oil pressure is 40 lbs idle, 55 lbs at 50 mph, compression is 100 average, engine does not smoke.
His answer, the Chrysler Flathead 6s had an inherent flaw in there oiling system, running over 2500 rpm sustained will kill the engine.
I am not sure if I buy into the last statement, not sure he knows these engines all too well, he knew the 251 ci engines, but when I mentioned the 218s and the 228s, he didn't think you could get parts for them, but I know for a fact you still can.
I would like to pull this 251 out of the car it's in, and strip it down, have the block cleaned, and possibly get the machining done ,and then put here back together myself,
I have the head off the engine now, it's currently seized, there is no sludge in the valve chamber, so that may be a good sign.
I seem to be afraid to drive my 47 with the 218 over 50 mph, I don't find the engine that noisy at this speed, I am afraid of blowing her up, being that she has miles, and is not rebuilt.
You guys with unrebuilt engines, what spEeds/rpm do you guys cruise at....................Fred