Lack of good pistons for the 292 is why I had Ross make them for me. Things to keep in mind when buying pistons for a 292.
1. Stock type pistons
a. Are heavy usually over 900 grams with rings/ pin
b. Use old design rings that don't seal well and are heavy
c. Have a low compression height and will sit way down in the bore giving a very poor quench
2. LP type pistons are expensive and do not come with rings and a,b,c above apply to them.
3. 12Bolt's Ross pistons
a. Have a higher compression height to help get a easy zero deck.
b. Use modern rings that are low tension (drag) and are lighter
c. Weight loss on a set is about 3 lbs in total over stock type pistons.
d. Hitting a compression of 9+ is easy with a 18CC dish instead of 30CC.
e. Made of the best piston material, these are premium pistons.
f. Come with rings/ pins/ keepers
On the topic of Ross making a single piston. They will not do it. Just went thru that. Has to be a set.
Last edited by tlowe #1716; 06/21/18 12:37 AM.
