Racing engines...what breaks most often?
#1
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Racing engines...what breaks most often?
Just curious for those with racing engines or who race...is there a component of the engine that breaks more often than others? From what I have seen and read, it seems the bottom end of these engines is usually pretty robust, rarely failing? If so, then would that mean valves/springs/cams would be the leader?
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Baja 252 Islander
Baja 252 Islander
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#5
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The parts that break are the ones which you don’t have several spares sitting around for.
#7
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iTrader: (1)
Racing breaks:
Balls
Hulls
Outdrives
Valvetrain
Pistons
Rigged components
and everything others mentioned
Balls
Hulls
Outdrives
Valvetrain
Pistons
Rigged components
and everything others mentioned
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#9
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You guys are too funny…but you are all correct… bajaman having raced supercat for a few years and being
directly involved in engine development, the valvetrain / camshaft are the biggest hurdles in racing that class. Things we’ve done included 55 mm roller cam bearings , truing up lifter bores. Bigger diameter lifters, various ramp designs on camshafts, using tool steel
camshafts, valvespring pressures , made own in-house rockers, used various retainers/ locks . The biggest helpful change was when we lowered the RPM to 7000 it helped stabilized it Speeds went down aiding in the safety of it. At the time I felt canopy construction was still lacking. Still loved the sound of the big block screaming at 7600 rpm kinda missed that.
directly involved in engine development, the valvetrain / camshaft are the biggest hurdles in racing that class. Things we’ve done included 55 mm roller cam bearings , truing up lifter bores. Bigger diameter lifters, various ramp designs on camshafts, using tool steel
camshafts, valvespring pressures , made own in-house rockers, used various retainers/ locks . The biggest helpful change was when we lowered the RPM to 7000 it helped stabilized it Speeds went down aiding in the safety of it. At the time I felt canopy construction was still lacking. Still loved the sound of the big block screaming at 7600 rpm kinda missed that.
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