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
>>>
> _______________________________________________
> Land-speed@autox.team.net
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/land-speed/drmayf@mayfco.com
_______________________________________________
Land-speed@autox.team.net
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
|