Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 urban cooling kit - bug or feature?

I had over 7 skip fires & they are no fun.(worrying & powerloss)

You can always have a manual switch in the extra 12v port

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Quote from RINGA re. the cooling pack:-

"I'm sure the factory did proper testing".

If so, this will be the only thing on the M3W that they did test properly.

Having said that, I still love the car and the "grin factor" is still there.

Only slightly tongue in cheek, as you will recall a number of graphs that the factory issued showing the engine temps on a drive through Malvern and around the more congested roads, both with and without Cooling Kit. Whilst they tried to argue that it gave an increase in power (which is clearly impossible), what it did do was help lessen the power reduction by the ECU when the engine got too hot, as it approached skipfire temperature levels.

Either way, my point was that a hoofing great fan that close to the engine will likely resist and overcome the air flow caused by low speed car movement forward.

Still gonna make my own though!

This is from a highly informed source:

"I am led to believe that the worst thing you can do is just to leave the engine idling, that is when it just running on its own power. That is when the most vibration is generated from the two pistons firing and time between is longer. At the higher revs when driving the vibrations are lessened."

The advice therefore, must be that if you are obliged to stop for more than a few seconds,even if you have the urban cooling kit, turn off the engine. This is especially important if you have an unmodified 2012 chassis.

There have been no reports, as far as I am aware, of cracks occurring in the 2013 chassis or the even stiffer 2014 chassis but it's advisable to avoid risks where one can.

RINGA, I agree with you and am also intending to make my own because I do not like the appearance of the factory's solution to overheating.

I have made a start on my own cooling pack and I am using a pair of 140mm dia SPAL fans which will suck air from the cylinders.

I have also installed a SPA Designs dual oil pressure and oil temperature gauge so that I can keep an eye on the oil temperature.

I intend to have the fans manually switched so that when the oil temperature reaches about 100°C I can turn the fans on as required.

I cannot believe the vibrations of the engine would crack a chassis! If that is the case, we need to organise a funding for a crash course in engineering for some people i will not point fingers at.

Vibration is a matter of frequency. At low RPM's vibration or frequency is less due to the lower firing cycles of the engine. But the pulses feel more severe due to the dead time between cycles allowing more energy to be transmitted before countered by the opposing cylinder firing.

At higher RPM's the frequency is higher but the pulses feel less powerful because there are more firing cycles opposing each other.

Either way, the rubber isolators the engine is mounted to the chassis with should be absorbing the brunt of it.

I've gone for a 6.5" blower fan which I intend to mount on the faux grille, which should keep it out of the line of obvious sight. Not sure how best to position it for best airflow on the 'intake' side of the fan, but I'm sure I'll work it out. I too will have it manually switched, so that I can decide when it's needed. Would be interested in seeing pics of your SPA gauge install and where you took the hook-ups, as monitoring things is important too of course.

From past experience with HVAC systems, a jet of air from the output of a fan or duct can be directed and will "penetrate" into nooks and crannies such as between fins. The input or vacuum side will however draw very much from the zones of least resistance and at a very short distance from the inlet the air velocity will be next to nothing. The factory cooling kit may well be very deliberately arranged to blow forward to get air flow in between the fins where there is otherwise very little when stationary.
Of course, my one is on over 13K miles and is yet to go into skip fire mode without the cooling kit.