[Land-speed] Bearing clearance

[Neil Albaugh]

I think you're right Dave. I'd check with the bearing manufacturer for his 
recommendations.

Regards, Neil  Tucson, AZ

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From: "Dave Dahlgren" <ddahlgren at snet.net>
Sent: Monday, May 31, 2010 10:26 AM
To: "Bryan Savage" <b.a.savage at wildblue.net>; "Skip Higginbotham" 
<saltrat at pahrump.com>
Cc: "LandSpeed List" <Land-speed at autox.team.net>
Subject: Re: [Land-speed] Bearing clearance

> With all due respect I think bearing width diameter and surface speed all 
> matter to clearance and oil..
> Dave
> ----- Original Message ----- 
> From: "Bryan Savage" <b.a.savage at wildblue.net>
> To: "Skip Higginbotham" <saltrat at pahrump.com>
> Cc: "LandSpeed List" <Land-speed at autox.team.net>
> Sent: Monday, May 31, 2010 1:04 PM
> Subject: Re: [Land-speed] Bearing clearance
>
>
>> The closer you can get to 100% oil, the better your results will be.
>> Excessive oil pressure just soaks up HP and heats the oil.
>>
>> Bryan
>>
>>
>>
>> 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