Andy
Aftermarket-wise Davies-Craig fans are very slim (but exxy)...
details (price/size/specs) at http://www.daviescraig.com.au/
there are also 5 blade 12 inch thermofans on datsun pulsars (i
think) which you could grab from pick-a-part which are about 65mm
blade to motor end. i have some at home which i could measure for
you if you like?? the "slimness" comes from the motor, which is
very flat and only about 20mm thick.
Aircon thermofans are also very thin, but their fan/blade design for
const operation when on means they are a restriction in
intermittent operation :(
Sorry I dunno anything about your other q's :)
Andrew
> Any help is greatly appreciated......
>
> One thing I need urgently for my car is a thin, big thermo fan. Or maybe
> two small, thin thermo fans. At the moment I'm running a huge engine fan
> which is stealing lots and lots of horsepower. And it's noisier than my
> turbo. :(
>
> What brand of Bleed off valve should I buy to wind up the boost???
>
> How much difference would a full 3" exhaust make. At the moment I'm running
> a huge dump pipe into a 3" mendrel bent exhaust which changes to 2.5" at
> about the middle of the gearbox.
>
> What is the highest gearing I can get in a R180 diff?? At the moment I'm
> running a 3.9 but I need about a 3.5 Do they exist??
>
> Thanks,
> Andy.
> _________________________________________________________________________
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