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Author Topic: new motor break-in and jetting.  (Read 397 times)

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new motor break-in and jetting.
« on: January 08, 2013, 10:16:37 pm »
ok its been awhile since I had to do a break-in, can someone give me the steps again.

thanks in advance.

motor is a true 540HRD, this one does not have a long piston life, tons taken out of the intake and bridge.
carb 42mm mikuni, running the air box with a k&n and no lid. also has billet intake with v2 reeds.
110oct at 24.1 927oil
LRD low boy pipe

and any idea on where to start with the jetting, i am about 500 to 1200elv, and temps going to be lower 60's

i think thats everything
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Re: new motor break-in and jetting.
« Reply #1 on: January 08, 2013, 10:27:01 pm »
Heat cycles grk!!!
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Re: new motor break-in and jetting.
« Reply #2 on: January 08, 2013, 10:50:25 pm »
yeah yeah yeah, so what are the temps.
125
150
175
190
wait till it cools to 100 before i start again. ICRS
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Re: new motor break-in and jetting.
« Reply #3 on: January 08, 2013, 11:45:49 pm »
Increase throttle position each cycle. 1/4 1/2 3/4 full throttle. Each cycle 10 minutes or so. First
Cycle static with a fan on the motor.  Let the motor cool all they way down between cycles and retorque
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Re: new motor break-in and jetting.
« Reply #4 on: January 09, 2013, 07:34:55 am »
oh yeah i forgot about that, lol
its sorta coming back to me now.
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