Quote:
Originally Posted by Matt930
Hi Guys,
I'm a little lost on this one. Basically when the car is cold, it idles with oil pressure against the bypass spring (75 odd PSI), but as it comes right up to temperature it drops to basically 0.4 bar
Even if I've been belting the **** out of it and its quite 'warm', it still does meet the 10PSI / Thousand Minimum, but at idle there really is basically nothing when it gets this hot...
Engine doesn't knock, rattle or make any noises, its never let me down or other wise to make me think it is actually a block issue. I've changed the Oil Pressure Sender unit, its fine. Its also idling a little low at the moment, so maybe that's not helping.
I will try ripping out the pressure relief valves next weekend when I'm doing my new oil cooler and hopefully there is something wrong with the pistons there. But I wanted to ask does anyone think that it might be a oil pump?
Its basically like it works fine in operation, but at idle, the pump efficiency is just not there... Anyway, thoughts would be appreciated.
Matt
|
What year 930?
Pre-78 930's don't have the bigger oil pump the later cars got. So oil pressures more like 911's of the same era are normal. And that sounds like what you're seeing.
If my '78 showed pressures like you describe, I wouldn't be running it, let alone driving it.