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Run In Period? Drive Hard Or Soft?

Nosure

By Nosure,
in Engines & Forced Induction

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Nosure Proficient

Nosure

Posted
Posted

I did a search, I found most people like run first 3000kms with no boost and limit rpm. but i told to a few tuner. they told me no matter how hard you drive it. only thing need careful is the engine oil, just don't use full syn oil in 1500kms. and a said if the engine builder is good enough the engine may only need a run in time on dyno.

I have no idea how to run in it prepely. some suggestion??

last owner done 2500kms after engine rebuild. I didn't know how did he drive, but i think he must done some hard driving on mountain. I also push very hard as well about 200kms. maybe change full syn oil after another 300kms?

but my gtr is run really good. good power, every thing is good.anyway I will get it on dyno next week check every thing.

if the engine push hard(not very hard, just normal drive,a few mountain and some 8000rpm gear change) in run in period will it get any damage??? or just take a bit long to finish run in?

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SECURITY Grand Master

SECURITY

Posted
Posted

2500km is around 1500km too much if you're doing the usual street driven run-in. the idea is to bed the rings in pretty much around the first 300km of driving.

what i do is not to do ANY highway driving, just do normal driving while accelerating from each set of lights going from a 30-40% higher than usual take-off speed then driving as per usual thereafter till you come to a stop again.

its also important that your AFR's arent rich during run-in as not to get bore wash which also causes your rings not to bed in properly.

personally i only do the full 1000km run-in because my mechanic says so - i dont want to give them any reason to void my warranty. any good tuner that actually gives a crap about your car can run your car in on the dyno. its always good to get a few k's (around 500km) of street driving just to sort things out before the final tune but 2500-3000km is over doing it. if the motor is going to fail because of wrong bearing clearances then it will fail well within the first 200km of driving, or on the dyno when its being run in.

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