metro6r4
|
| posted on 5/8/12 at 08:09 PM |
|
|
presure relief thermostat
Hi I have just ordered a remote mounted oil filter kit with complete oil cooler, I’m going to try and fit that at the weekend and start on the pipe
work at the front of the engine and I am reconsidering my current stance on thermostats as I’m concerned at overcooling the engine so I’m considering
fitting a pressure relief thermostat is there any advice on fitting one of these to a rover k series in a locost. I am aiming to keep my engine
temperature at 70 degrees the optimum for performance
|
|
|
|
|
MikeRJ
|
| posted on 6/8/12 at 12:46 AM |
|
|
Can you even get a PRT that will regulate at such a low engine temperature?
|
|
|
cliftyhanger
|
| posted on 6/8/12 at 05:20 AM |
|
|
I doubt the oil will want to be kept that cool. The thermostats are available from mocal and are a doddle to fit, or you can usually have them
integrated into the sandwich plate (when you order, so too late for you)
Temps are usually 80 odd degrees, and a 90 something can be had too I believe,
|
|
|
britishtrident
|
| posted on 6/8/12 at 11:28 AM |
|
|
A Rover K needs to run at about 80 to 91c
Rover K series external thermostats come 3 types identified by colour. Black, Grey or Cream
Black is non-prrt
Grey PRRT low temperture for hot climates
Cream PRRT 91c running temperature for temperate climates.
The price of these has increased but a search on eBay for "Freelander thermostat" should turn up a few at a reasonable price.
A PRRT with give very stable running temperature, the only problem with fitting a PRRT is the plumbing gets ugly you need a Tee to fit into
the top hose to provide the by-pass. On the Rover 75 1.8 a 32mm equal Tee works fine suitable black plastic tees can be found from sellers of
equipment for Koi carp ponds -- do an ebay on "32mm Koi T "
32mm however may no fit in with your top hose size so you may have to find another solution.
The standard thermostat should be retained but the working bits gutted out so the flow is not obstructed.
A simpler much neater alternative to a PRRT is simply to drill 3 off 2.5mm holes in thermostat valve plate.
If using the original conventional thermostat make 100% sure it is fitted the correct way round ie wax capsule towards the water pump. also
make sure you have a by-pass hose connected from the head outlet to the water pump if you don't the engine temperature will over heat.
Important points
Most cooling problems and gasket failures on Rover engines are caused by external water leaks, usually from either the inlet manifold
gasket or from the junction of thermostat housing and the steel water pipe that runs along the back of the cylinder block.
Any time the head or manifold is removed fit a new inlet manifold gasket, to avoid the nuts becoming coil bound on the threads fit extra thick
washer and spring washers below the manifold retaining nuts. The thickest 8mm washer I have found are zinc plated washer for exterior use sold
Wickes stores.
[Edited on 6/8/12 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
britishtrident
|
| posted on 6/8/12 at 11:55 AM |
|
|
Note extra washer under inlet manifold nuts.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
|
|
|
