Bill :
IMO your problem is not the bypass valve, but instead you're low on oil ! I
have exactly the same thing happen on my daily driver, it always means I'm 2
qts low.
Basically, with cold, thick oil, the rocker cover fills enough with oil that
there is no longer oil in the sump covering the oil pump intake. The pump
sucks air, causing the oil pressure to drop to 0. Soon, enough oil runs
down that the pump sucks oil again and the cycle repeats. With warmer,
thinner oil, the problem is much less severe (but I'll bet it still happens
on corners).
The increase in oil pressure from adding the cooler very likely was because
of the lowered temperature of the oil. My objection to non-thermostatic
coolers (like the kit Moss sells) is that the oil may never reach the proper
operating temperature, which is required to boil off water and acids that
will otherwise accumulate.
IMO oil pressure is overrated. I've run engines for a long time that showed
_no_ oil pressure at hot idle. They all just kept running ...
Randall
> However, in the
> mornings when I start it, sometimes the oil pressure goes up to
> about 70 and
> then fluctuates up and down, sometimes to zero. As you can imagine, this
> instantly gets my attention. If I add another 1/2 quart of oil,
> the pressure
> stays at about 70.
/// triumphs@autox.team.net mailing list
/// To unsubscribe send a plain text message to majordomo@autox.team.net
/// with nothing in it but
///
/// unsubscribe triumphs
///
/// or try http://www.team.net/cgi-bin/majorcool
|