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Bearing oil clearance, ef using 7m2158hx 

 

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 Post subject: Re: Bearing oil clearance, ef using 7m2158hx
Posted: Wed Nov 03, 2010 7:29 pm 
Getting Side Ways
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typo lol i was ment to write i swapped the lower bearing shels around, lol

not stupid enough to swap main caps around lol

 

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Crank Assembly balanced, HV oil pump, ACL Trimetal bearings, "1 extra oil clearance taking to around 0.0650-0.0700 on mains and big ends, Moly rings,, Xr6 Cam, POD ( Possibly oversize injectors), Block, Head, Timing cover, belt idler, Alternator,painted in ford light blue

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 Post subject: Re: Bearing oil clearance, ef using 7m2158hx
Posted: Wed Nov 03, 2010 7:47 pm 
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Shifteh wrote:
typo lol i was ment to write i swapped the lower bearing shels around, lol

not stupid enough to swap main caps around lol

can only read whats written,how much end float on the crank,oil it up, fit the crank,torque the caps down,and turn it by hand about 12-20 times,two bolts in the back flange,will spin easy if ok.no oil in caps or on back of bearing shells.if your happy keep going.

 

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 Post subject: Re: Bearing oil clearance, ef using 7m2158hx
Posted: Thu Nov 04, 2010 5:05 pm 
Getting Side Ways
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Ride: Ford EF - Garret TO4Z

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what you mean 2 bolts in back flange,

cranks bolted down atm and i can turn it with minimal effort

also i understand that it is common practice to moly lube the thrust, but what about the other bearings

i was thinking some moly lube??

any ideas

 

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Crank Assembly balanced, HV oil pump, ACL Trimetal bearings, "1 extra oil clearance taking to around 0.0650-0.0700 on mains and big ends, Moly rings,, Xr6 Cam, POD ( Possibly oversize injectors), Block, Head, Timing cover, belt idler, Alternator,painted in ford light blue

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 Post subject: Re: Bearing oil clearance, ef using 7m2158hx
Posted: Thu Nov 04, 2010 6:26 pm 
Getting Side Ways
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Shifteh wrote:
ok so ive swapped lower caps around, checked and checked again 7 hours of checking and heres what ive got

Main 7 = 0.050
main 6 = 0.050
main T= 0.055
main 4=0.050
main 3= 0.052
main 2=0.050
main 1=0.055

+-=5-8,

im probally going to stick with thease,, as i cant really be stuffed sending the crank for machining,,

i can pull the engine back out if i need to in the future so ill experiment with this oil clearance

should the big ends be smaller, same size, larger clearance for oil so not to incur a restriction???



Thats a bit tight. A linish would get you pretty close and won't cost much,
your rod bearing should measure at 0.050mm to 0.055mm

the mains really should be closer to 0.060 to 0.065.

Like i said 0.001 per inch of journal. OR 0.0254mm per 25.4mm of journal.


We have already been over this earlier in the thread. please read it and think for your self.
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