Blyton Track Day??

[turbonutter]

What is the flow rate of your coolant pump? Maybe it's a brain fart on my part but your figures show a 7 times over pressure drop on a 10 litre/min flow change?

No idea what the flow rate of the system is, I have the Alfa mechanical pump, plus a Stewart components booster pump. The electric pump is rated at upto 55GPM, but I assume that is free flow & they dont publish a graph...
Below is the flow graph from the Laminova site - considering there is a pretty big hole in the middle of the cooler, there is quite a pressure drop with no restricter....

I will be doing some measuring and calculating before i decide to install a plug or not....

[LM mic]

Neil
if you install aplug or watever restrictor you will have on the same time a drop of pressure or say flow efficiency that will not help in making a nice flow return oil .
When we had those type of issues on twin turbo Venturi Le Mans cars we managed to increase the number of oil coolers as water cooled ones are not helping much
on turbo engines ( specially Laminova ones !!!)

[turbonutter]

Neil
if you install aplug or watever restrictor you will have on the same time a drop of pressure or say flow efficiency that will not help in making a nice flow return oil .
When we had those type of issues on twin turbo Venturi Le Mans cars we managed to increase the number of oil coolers as water cooled ones are not helping much
on turbo engines ( specially Laminova ones !!!)

the restrictor would be in the water side to close partly the central bypass hole and force more flow through the cooling channels......

[strat24v]

I don't think the pump would generate more pressure to force extra water through, I'd think you'd see just a reduction in flow.
Looking at a Laminova I have here, the annular outer ring has a cross sectional area of approx 190mm sq, the Centre bore 530mm sq mm.

[Sando]

I've seen those restrictors tried before Neil, be very cautious, as all it did was cause water overheating by restricting the flow too much.
You can get different size restriction holes in them though. I'd look at making something up to make a small change to the standard size and see the difference it makes, before going to the full pinhole turbulator or whatever it is they call them.
thats the one I saw just cause overheating.
Cheers
Rob

[strat24v]

Rather than look at an attempt to get the water to cool the oil more, would it not be better to have more oil side area? Maybe add another small laminova cooler?

[LM mic]

[ Maybe add another small laminova cooler?[/QUOTE]

Yes that could be the best idea to test ....