Heat Sinks for a cylinder head

[davidblythe]

Thinking aloud so ready to be shot down in flames

did anyone see the new air cooled moto guzzi in MCN a few weeks ago that is using heat sinks connected to the cylinder heads acting as cooling radiators in the air flow

BY using all 4 cylinder head nuts extended and then all fastened to a non painted head cowling, would there be enough head conduction from the cylinderhead to the cowling which could be cooled by the passing air esp if you didnt run with the stand plate to make a difference

any thoughts

[sean brady scooters]

its well worth trying dave as its quite easy to do...,i really dont know how much difference it would actually make but at least its a step in the right direction...i think that anything that helps cooling matters is well worth trying.

if used with many other mods to ensure max cooling it will make some difference.

[drunkmunkey6969]

I like that Dave..........good idea!

[sean brady scooters]

just a guess....but is maybe dave suggesting extra long and wider cyl head nuts made from brass....
if so ,then thats good.

[davidblythe]

just a guess....but is maybe dave suggesting extra long and wider cyl head nuts made from brass....
if so ,then thats good.

strangely i wasnt thinking that way :biggrin: but good idea

anyone remember the push in exhaust headers early brit bikes had with a heat sink star shaped collar on the header connected to the cylinder, will try that as well on a stub exhaust

[sean brady scooters]

there is a very good reason as to why brass nuts were used on exhaust studs.....even though steel nuts would have been far cheaper to use....

[davidblythe]

just looked at the conduction tables, appreciated how good copper was but hadn't appreciated how good brass was over mild steel

[davidblythe]

just had a brainwave or am completely crackers

different to the above but should be a no brainer if i can get the material

[J1MS]

just had a brainwave or am completely crackers

different to the above but should be a no brainer if i can get the material

Alloy??

[Special X]

Lambretta fitted brass exhaust nuts to prevent them seizing onto the steel studs. This was the era of real engineering and most cars were fitted with brass exhaust manifold nuts as well. Removing a Mini exhaust manifold with seized nuts just doesn't bear thinking about