Put a dependable mechanical gauge on the engine and try it. If it is still
giving you low pressure as described, I would suspect a loose clearance
somewhere.
Regards-Chris
On Fri, 14 Mar 97, jpeterson@CCGATE.HAC.COM wrote:
> Yikes!!! Based on all the novels going around about alpine and tiger
> conversions, it appears everybody else's Tiger is running better than
> mine as they are not out working on them. But I would like to
> interrupt the barrage for a technical question if I might.
> I am having an problem with low oil pressure on my Mark 1. When I
> start up the car after it has cooled off, I have a healthy pressure of
> 65 at idle. This remains fairly constant for the first 10 minutes of
> driving and then the oil pressure drops rapidly until I have about 25
> psi at idle and 45 at 3000 rpm. This phenomenon seems to occur whether
> the engine temp gets up to 205 degrees or on cool nights when it stays
> down around 170. It seems to be more time dependent rather than temp
> dependent. The engine is relatively new (2500 miles) and tight, the
> oil pressure line is new and doesn't leak, new high volume melling oil
> pump, and I am running 20w-50 Castrol. My next step is to try a
> different pressure gauge and also get an oil temp reading, but was
> wondering if there is anything Tiger unique that might be going on
> here.(ie early signs of gauge failure, gauge susceptibility to hot oil
> temp. or???)
> Any help would be appreciated.
> As always, all is meant in fun and jest as there are too many serious
> issues to deal with in life, without making cars one of them.
>
> Jay Peterson
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