Originally posted by todras:
Originally posted by Jason43:
being that it could be ported or even extrude honed.




Plastic UIM is already smooth as glass, less weight, disperses heat better. Only benefit would be porting.




Yeah, and WAY too SMALL. Porting doesn't make the runners larger in diameter all the way through like extrude hone can.


Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black