Grp Rods

Discussion in 'PSI Superchargers Tech Questions' started by fuelaltered1, Apr 29, 2010.

  1. fuelaltered1

    fuelaltered1 New Member

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    How many passes roughly in a Blown BBC at 7500 hundred rpm max should a guy get before putting in new.

    Thanks Ron
     
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    fuelaltered1, Apr 29, 2010
  2. Nitro Madness

    Nitro Madness Super Comp

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    That's a tough question.....how about 1 run before the break? Seriously....I change them every season which is 25-30 runs for us....some teams that we race with use 'em for 50 runs....and you are probably gonna get a wide variety of answers on this one....
     
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    Nitro Madness, Apr 29, 2010
  3. Mike Canter

    Mike Canter Top Dragster
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    Call Brian Scallon at GRP and talk to him. He monitors a lot of different type of motors and probably can give you a pretty darn good idea. You can also send them back to GRP and have them checked after so many runs. A lot of things go into computing the life of a rod. On a 2000 HP nitrous motor going up to 8500 RPM with quarter mile runs we went 50 runs. On a blown ProMod going up to 9000 to 9500 most change at 20 runs and some get away with 25 runs. To be truthful I have had brand new rods in a car and had one break on launch then have had them last forever. Talk to Brian.
     
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    Mike Canter, Apr 29, 2010

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