Thread: bbc thrust problem

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Originally Posted by bbc nova1

my front accessory is a simple march under driven 2 pulley set up, im wondering if the harmonic balancer would cause this, because the threads in the crank snout are on there last legs, too short of a bolt will not bite, if this were to wobble slighty could it take out the thrust

no... it would not you can drill and tap it to 9/16 bolt and drill the washer. the thrust only controls the back and forth of the crank and under a load and keeps the crank riding on the brearings and stops the counter weights from hittting the bulk heads of the block .damper is press on so it bettter not wobble and is on the front of the crank if bad it could in time beat the brearing out . not the thrust. .your fly wheel or trans is more at fault of a bad thrust or all things i listed to much load on thrust . to loose to start with? bad machine work? beating the thrust out? and every thing on other post not the crank damper bolt