Permanent oil cooler vs thermostat

[Lt86]

(03-19-2015 06:37 AM)allencr Wrote:  " idle around 2500 rpm and keep doing so for quite a long time because the oil stays cold"

This is not true.

Good to know! Unfortunately it's true for me at the moment...

(03-19-2015 07:53 AM)Bean Bandit Wrote:  Hi Lt86,

a good resource to read you can find here http://www.billzilla.org/4agstock.htm he covers many things related to our engines. It's been written a long time ago but most of it still applies today.
Regarding the coldstart he only covers the fuel side so I won't go into that. The air needed for the coldstart is controlled by a small part underneath the throttle body and controlled by water rather than oil. There's a wax element in there which allows more air into the system when 'hard' as soon as it heats up it will close a passage way and idle will decrease to normal (750-850rpm if set right). The issue in cold weather winter is more down to the fact the plenum and throttlebody is 'cold soaked' and will take a while to warm up. Not much you can do about it, apart from waiting for summer.
Depending how cold it is it should take around 5min to warm up.

The oil cooler isn't very big and airflow through it is also not excellent so it doesn't do much harm even in Winter. you can tape a piece of cardboard over it (fully or partialy) and check the difference in oil pressure.

Hope that helps

D3nso, Bean Bandit. Thanks for the helpful replies. There must be something wrong with the wax pellet then because I drove about 35 km to work yesterday morning and idle was still at 1500 rpm when I arrived. Later on the day, when I drove home or on longer trips the engine idles beautifully at 800 rpm.

(03-19-2015 01:22 PM)Dave W Wrote:  Remove the waxstat from the bottom of the TB. Verify that the water lines to the waxstat are actually functional. Spray or soak the waxstat in carb cleaner and re-assemble using a gasket sealer.
For the oil cooler, to reduce warm up time I place a thin sheet of fiberglass between the oil cooler frame and the fins. I added a hinge on the fiberglass sheet that allows me to uncover about half the area of the cooler. In spring and fall, I run half the area of the cooler, in winter it's completely closed off and in summer I remove the sheet. Dave W

Is that Waxstat the red and green plastic cilinder?


So I should disconnect it from the rubber hoses and clean it the best I can?

Thanks everyone. Learning a lot