Re: Ser III radiator
I still have to solve a very high oil pressure problem that I am convinced
is overheating the oil via the relief valve and causing a higher engine
I still have to check the relief valve spring at the oil cooler to see if
maybe too long or tight.
As I said before once, when I o-hauled the motor I found the relief valve
ball missing in the oil pump and I refitted a loose ball from a broken
bearing I found and this increased the oil pressure from a max of 3 Bar to
now 7 bar at revs and even when warm.
This leads me to think the oil is relieving too high at the oil cooler
relief (thanks Dougal).
JD <jjd@SPAMLESS.com.au> wrote in message news:firstname.lastname@example.org...
> jamsan wrote:
> > Hi all
> > I have had a year of trying to solve overheating problems on my 1973
> > Just had a look at a 1983 version with same engine but the radiator was
> > nearly twice as thick as mine!
> > Is it possible that the 2,25 of old had a thinner radiator or have I got
> > something wrong fitted to my machine?
> > James
> I seem to remember there were two thicknesses of radiator, probably
> optional. But the thinner one is quite adequate provided there is no other
> problem unless you live in a very hot climate and use the vehicle
> stationary with a PTO etc. If you live in a normal climate - temperatures
> rarely above 40C - and use the vehicle for normal purposes the thinner
> radiator is adequate. But it has less spare capacity to cope with loss of
> cooling such as partial blockage of air or water passages or excessive
> due to incorrect timing.
> Note that there are other problems that will cause overheating regardless
> the radiator - these include coolant leaks, eroded water pump impeller,
> loss of pressurisation, faulty hoses, faulty thermostat, leaking head
> gasket. But you will probably have looked at most of these.