Breaking in new gears
Here is what I was told by person who built my rearend.
standard, plain, regular 'ol parts store 80/90 gear lube... definetly no synthetics though.
do 3 heat cycles with regular street cruising driving... no sustained highway speed or launches. after minimum 3 heat cycles, then do whatever you like. heat cycle is from cool to full operating temp, then back to cool. usually 1-2 hours cool time.
after minimum 500 miles change out the gear oil. use whatever you like and what viscosity fits your needs.
This may differ for you slightly as I am running a Tru trac in my Fab9"
standard, plain, regular 'ol parts store 80/90 gear lube... definetly no synthetics though.
do 3 heat cycles with regular street cruising driving... no sustained highway speed or launches. after minimum 3 heat cycles, then do whatever you like. heat cycle is from cool to full operating temp, then back to cool. usually 1-2 hours cool time.
after minimum 500 miles change out the gear oil. use whatever you like and what viscosity fits your needs.
This may differ for you slightly as I am running a Tru trac in my Fab9"
Last edited by SS1875; Feb 13, 2009 at 05:12 PM.
the gear manufacturer laps the teeth before they ship them to you. The majority of the heat generated is from the bearings breaking in, not the gears. A good quality lube will not break down under high heat to the point that it will damage the teeth. Just drive it.
Jason at TDP told me when he did my gears to do about 15 heat cycles. Drive for about 15 minutes and then let it sit about 2 hours. You should have about 500 miles before you beat on them.
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floor it every chance you get, brake torque @ 5k rpm at every red light and go on the highway and stay in first gear!
lmao, just joking
i have also heard 15 cycles as a few posts above me said
lmao, just joking
i have also heard 15 cycles as a few posts above me said
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