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Recent content by Hasbro

  1. Hasbro

    Straight six crank harmonics

    IN the 1970's there was a Ford engineer that Drag Raced a 300 Ford '6' using a three piece sectioned 'Boss 302' cylinder head furnaced brazed into one piece. He had worked through the crankshaft brakage/power robbing vibration issues I heard, by dissconnecting the flywheel from the crankshaft...
  2. Hasbro

    4-VALVE HEAD - OPTIMUM PORT VELOCITY??

    Here is some additional input you may investigate. Although not relating to the cylinder head, the 4 cylinder oval migit engines have found for some time now, that the single most rpm extending area of attention is, the increased taper in the injector manifold to the butterfly. The port stays...
  3. Hasbro

    Cam gear broach accuracy

    The issue was in the hobbing process. John Haskell Aire Research Engr.
  4. Hasbro

    Cam gear broach accuracy

    Some time ago I ran into information on the problem issues of correct cam gear broaching. Seems to be a major problem that is not realized in the engine field. Apparently the broach pitch & depth is all over the map, so much so that a grade had been attached to the shafts & the good are few...
  5. Hasbro

    inlet swirl again?!?

    I have a relation that ownes/operates a hi volume trailer sales in Wa. State. He has these spacers and sells the heck out of them. I was told about them and laughed. I spoke with one of the employees about them while visiting one afternnon and he said he laughted the same. He said " Let...
  6. Hasbro

    RESIN SEALANT FOR CYLINDER HEAD

    I use a product used for plugging the holes in bowling balls. Absolutly the best sealer I have ever found for race type cylinder heads that have problems beyond normal repair principals. This stuff is tough. Flows well and pours eaisily. You will have roughly twenty minutes to flow the product...
  7. Hasbro

    Short Piston Skirt Design

    Stroker, One thing about my own thinking. I can know a lot about one thing, but not a lot about everything. That gets us in a lot of trouble in our evaluating, etc. What I have noted in limited involvement concerning the piston acting as a spring, was notable in thin wall engines. In that...
  8. Hasbro

    Piston ring end gap (your thoughts)

    I have noted, over years of waching this cause and effect of sealing, a somwhat differant slant. The ring gap does not appear to be the 'Holy Grail' concerning 'sealing'. Notice I did not say 'ring sealing'. Everone knows the basics here although, concider the heat spread across the top of a...
  9. Hasbro

    Short Piston Skirt Design

    Years ago I remember while researching this question, I ran into information from WW2 aircraft issues. During the time of piston engines and dog fights, I understand the allied forces lost an enormous amount of our fighter pilots from pison sezure in the act of w/o throttle dives. High altitude...

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