Oil Pressure

[Graeme Naisbitt]

Ok, this is probably a really stupid question... but here goes anyway

When I start up when my mx has been stood for a while, I notice that the oil
pressure is very high - would this indicate its time to change the oil
filter? I notice when the car is warmed up (viscosity is reduced) the
pressure reduces... Would this be correct?

OK, second question, is it worth removing the cat and putting in a
resonator? Performance gains or not? Any other cheap ie virtually free,
mods I can do? (Already got 14 degree timing)

Thanks peeps...

Gram

[rossandmeg]

Hi Gram.
Normal thing to happen with the oil pressure.Once the engine reaches
operating temp you should have a reading of 2.0 to 3.0 kg cm2 at 1000 rpm
and 3.0 to 4.0 kg cm2 at 3000 rpm
These figures are from the Mazda Miata Enthusiast's Shop Manual.

Ross H

[Graeme Naisbitt]

Thanks,

Operating temperature figures seem ok, but its just under 6.0 kg cm2 at
start up until normal temp is reached, is this a problem?

Gram

[Louisa Currie]

Mine is almost at 6 on start up too. I was initially concerned when I first
got the car but my mechanic said it wasn't a problem.

Lou

[Graeme Naisbitt]

Thats great then, I was just a bit worried as I hadn't noticed it being
quite that high before.

Thanks
Gram