heating

My Commer that has a modified engine , I have found that if in 28c plus heat , I cruise at 2500 r p m plus rpm for an hour or so the temps go to 200 , if I drop down to 2000 rpm the temps drop to around 180 .If when driveing at 2500 r p m, I turn on the heater the temps drop to around 180.The heater gets its air from half way up the car. If I drop down a gear and still do 2500 rpm for .5 of an hour, but at lower speed the temps stay low around 180 . From this I think that the air is stalling in front of the Radiator at higher speeds . I have a larger radaitor fitted , a larger flex fan , and metal plates that direct air up to the Radiator.???
 
Try plumbing a bike rad or heater matrix into the cab heater circuit and position it well into the air stream. Or fit a lower air scoop, you can turn the original one upside down to get this effect.

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Summer's Coming
 
Sounds like it,s an airflow problem. We had similar issues with Fontaine, and never did solve it [xx(]. Either not enough air is getting in or the heat is not getting out. May be worth trying an electric fan rather than the flexy ;)

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"You,re only supposed to blow the bloody SLIDING doors off"
 
I am considering making a small run of overcored alloy rads which will help alleviate problems such as these. Would anyone be interested? Just trying to gauge demand?

Cheers
Jules

RatSport www.ratsport.co.uk
 
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