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  1. Al Smith

    POP-UP PISTON

    That's me ,Mr. Tidy alright .:|:
  2. Al Smith

    POP-UP PISTON

    Well you gotta have the machines to do it with and the know how .It doesn't come over night although to me machining is not a big deal . My old man said I came out of the womb with a set of micrometers in one hand and a wrench in the other .My mother disagrees ;)
  3. Al Smith

    POP-UP PISTON

    Yep Squish ,that's pretty much it . I've had these pics on a zillion times ,one more won't hurt . The pop up which is on the Rocky special and the hemi domed stocker on an 038 Av . I just did portwork on the AV but will go back in and shave the jug when I get the chance . I won't carve the...
  4. Al Smith

    POP-UP PISTON

    Again simply pulling one out of my arse that works ,a pop up can be good .Is it better than a flat top or hemi domed piston ,good question . A pop up does several things .By its' design it more evenly spreads the flame front .It provides better sweeping of the residual exhaust gasses on the...
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