Joehwee

iTrader: (3)

Fisher: the carb is also different, the 3 port carb have only low and higg end adjustment, the 5 port carb have low, mid and high. The 3 port ahve a silver carb and the 5 port have a black carb.

Fisher890

Ty again Joe the O.S site doesn't seem to make that Clear or I missed something.Doesn't sound like this is the motor I thought it was.So Back to the the other based motors for me.

fastharry™

iTrader: (4)

the carb is different on the 5 port..

Lil Pinto

I have two O.S. Motor and these engine are reliable and last quite long (if tune right). My .12 CZ-Z (9 years old) motor have about 11 gallons of fuel through and still have good compression. My TR Turbo have 1 gallon of fuel and it’s pretty fast, it not as fast as the Nova Rossi based motors but more reliable. Just make sure that you always see a steady stream of smoke on the straight and do the five second idle to adjust the bottom end as stated in the manual (page 15).

Omar

iTrader: (15)

OS engines are very reliable, they start right up and stay running. i laugh when i see people running back to the pits to get their car started.