[Healeys] oil choices

[Oudesluys]

Chris,
It has nothing to do with the type of engine, modern or old, cast iron 
or alloy, more with resistance in the internal oil ways of the engine. 
Some engines have long and/or precious small diameter oil ways. These 
kind of engines are at risk. It is not all pressure you need. You also 
want flow.
Kees Oudesluijs
NL

Op 29-6-2012 14:14, Chris Dimmock schreef:
 > Kees, with all due respect, the theory is correct, if you are talking 
about a modern twin cam, aluminium, multivalve engine.
 > But It isn't if you are talking about 500 plus pounds of cast iron 
heatsink with a single flat tappet cam in the block. In a hot climate,
 > I've been running HPR40 or HPR50 - depending on the season, and the 
cars use - for 12 years, with no problems to date. Head hasn't been off, 
just plugs, points, timing, tappets. Usual maintenance stuff.
 > Oil pressure today was 55- 60 lbs at cold idle. 60 lbs at 4,500rpm. 
40 lbs at hot idle. That's today - I just drove to Wakefield Park from 
Sydney - with HPR40.
 > My engine was rebuilt in 1998. 
http://www.myaustinhealey.com/dyno_sheet.html
 >
 > Best
 > Chris

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