Bearing clearances
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Bearing clearances
Henryslx June 6th 2012, 12:47 pm
Whats the norm for rod and main clearances on a BBf nitrous motor...4340 crank and steel rods... Gonna see a 300 hit... Thanks in advance guys..
Henryslx- Posts : 89
Join date : 2011-11-23
Re: Bearing clearances
studly June 6th 2012, 6:45 pm
with a 20/50 I like to see 3 to 3.5 on mains and 2.8 to 3.2 on mains
studly- Posts : 512
Join date : 2009-08-12
Age : 49
Location : smack talk VA
Re: Bearing clearances
richter69 June 6th 2012, 7:11 pm
studly wrote:with a 20/50 I like to see 3 to 3.5 on mains and 2.8 to 3.2 on mains
this is where I'm at, it aint no spray the house down deal though.............
richter69- Posts : 13649
Join date : 2008-12-02
Age : 53
Location : In the winners circle
Re: Bearing clearances
Lem Evans June 6th 2012, 7:13 pm
.0028"-.003" rods & .0035" mains seems to work at that power level. Make sure the thrust has .0035" and .006"ish end play.
Lem Evans- Posts : 7445
Join date : 2008-12-03
Location : Livermore , Ky -
Henryslx- Posts : 89
Join date : 2011-11-23
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