Any difference from the 85 to 86 Z cylinder?

[slippy4]

Is there any difference between the 85 and the 86 Tri-z cylinder? as far as porting and whatnot? the 86 is a silver color is it not? thanks

[slippy4]

also anyone know about just polishing your own ports? does it add anything? i wouldnt think it hurt it just to try it anyway....

[TRI-Zbrian]

it should help a bit in power if you smooth out the defects in the ports the guy i bought my tri z off did this to mine thow so i dont realy no if it gave any more power at all

[slippy4]

yeah, i figure it cant hurt anything, after all it just makes the ports smoother.