[Land-speed] Bearing clearance

[drmayf]

OOps! Forgot something... 10 psig for every hundred hp?   So a 1300 hp 
motor should have 130 psig? a 2500 hp one have 250 psig?  I though the 
rule was 10 psig for every 1000 rpm.

mayf

Skip Higginbotham wrote:

> More important than clearances is oil volume. If you run a dry sump 
> system, you're fine. But if you run a wet sump, be sure to have at 
> least 12 quarts of oil or one of the newer blocks that have priority 
> oiling. I have not so good experience...........
> On the subject of clearance, with lower viscosity oil, reduce bearing 
> clearances. And piston skirt clearances. Depending on how light the 
> oil is, 2 to 3 thou on the rods and 3 to 4 thou on the mains. At least 
> 50 psi oil pressure and even better, 10 psi for each hundred HP. Doug 
> Odom is a good source of info on engine lower ends.
>
> It matters little the brand of engine....bearings are bearings.
>
> Good luck,
> Skip
>
>
>
>
>
>
>
> At 07:40 PM 5/10/2010, John Burk wrote:
>
>> BBC
>>
>>> John, 427 what? Chevy? Ford?  If tiz chevy and a stroked small block 
>>> then excuse the ring, lol.... I know nothing about them ch*vy 
>>> critters...
>>>
>>> mayf
>>> John Burk wrote:
>>>
>>>> For a 427 stroke , 7500 rpm and the lighter oil everybody uses what 
>>>> sort of
>>>> bearing clearance works at Bonneville .
>>>>
>>>> John Burk
>>>
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