Visit The Dirt Forum for More Information

Author Topic:   pistons
Dirt Forum Racer

Total posts: 77
posted December 15, 2002 09:13 AM
I am building a streetstock motor for next
year. Some people are telling me to use
ultra lite pistons or I won't be running
up front, but others are telling me it
doesn't matter as long as everything is

what is your input on this?

Dirt Maniac

Total posts: 180
posted December 15, 2002 09:45 AM
every ounce counts. But you need to make sure your assembly is balanced. Heavier pistons are harder on the rods as they are shoved up and at an abrupt stop and then back down. long story short lighter is better but do what your (in my case my wife) pocket book will let you.

Dirt Full Roller

Total posts: 62
posted December 15, 2002 11:41 PM
running liteweight pistons has its advantages, and also disadvantages along with everything else in racing. the lighter piston is alot easier on the rods (i.e. the rods should last longer in a perfet world...but...) I personally think that they are more fragile than the regular weight forged pistons. Reason being we had a motor that the timing backed off to around 23* it went 1/2 a lap sounding like a popcorn maker, we got back to the shop, pulled the motor down and 6 of the pistons had cracks on the underside of the piston. We ran a modifed motor with the regular weight flat tops and ran top 5 to top 10 11 of the 14 races of the season. just my opinion

Back to the Archives