Re: Megabusa cooling issues

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> I have built a Megabusa and have covered approx 300 miles in now and seem
> to be having cooling issues.
>
> I have used the SBD/Nova Racing dry sump which means I have to run a
> electric water pump as the scavenge pump is driven from the original water
> pump take off.
>
> Initially I was using the Westfield supplied VDO sensors with the Race
> Technology Digidash but had really odd readings for oil pressure,water temp
> and fuel level.This turned out to be the calibration file supplied by
> Westfield(they admitted it was mainly guesswork!!)
>
> I have now swapped over to the Race Technology recommended Bosch sensors
> and it seems a lot better.
> I used the car on Saturday and went round the M25 to Cobham Proving Ground
> (a 30 mile trip) and whilst I was on the motorway the temps crept up to 113
> degs.This was just cruising at 70 mph and pulling 6000 rpm.
> I have swopped the cooling fan switch for one that comes on at a lower
> temperature and have been all round the car witha infrared temp gun trying
> to check to see if I really am seeing such high temps but obviously I am
> only measuring the temp of the component not the actual coolant level.
>
> In all this checking/testing the car has not boiled over ever,the highest
> oil temp has never exceeded 100 degs.
>
> I am at a loss what to do next other than spend even more money and get the
> RadTec radiator they make which is a direct replacement for ther existing
> Polo rad.
>
> Just to add some more info I was using the Davies Craig Digital water pump
> controller but have bypassed this now and the pump is running constantly.
>
> Any suggestions please as I have a driving day booked at North Weald on
> July 10th.
>
> Thanks
>
> Steve
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