Finger ports, how to find where to put them

[Fast Fred]

be talkin about finger ports, how to find where they go, port on the piston, and any other important measurement that you would need to know to install them with a good outcome.

[Fast Fred]

ok see how this looks

[Fast Fred]

ok, the intake side, no matter who's looper you are runnin, this is more or less the intake ports you are runnin

[Fast Fred]

so boost in the center and two side tranfurs, on a used cyl wall some times you can see where the ring gaps run, if not or fresh, you will need to mark the pins to the crown and reinstall ( you don't need the rings on) makin shots of said marks .............

[Fast Fred]

mark the piston pin with pencil up the side then to the crown

[Fast Fred]

then install, no rings, with bearin, snug is good, at TDC transfer the marks from the crown to the deck of the block.....

[Frank73]

Hi Fast Fred,

What is the different between build up port on the piston compare the original one. Thanks