911 Cooling Shrouds - Improving Internal Air Distribution

[Wally]

Originally Posted by Sandeep

I'm sure this shroud uses the 964 setup...

Sandeep

Thanks Sandeep
The 'new' curved fan blade houses and fans/generator combo's you can buy at bug stores 'everywhere' do NOT use the housing of the original 964!! So, AFAIK, you still get the old 4-vane style fan housing. That fan housing is a new mould, where a Valeo generator fits in nicely. Also, the original 12-blade fan is turned down to a 225 size if I am not mistaken. Anyway, a considerally amount of original fan blade is removed from the tips. I don't know how that effects cooling air.
Probably 'they' thought that the amount of air was more than enough, maybe even to much (as Jake also has said sometimes), so it would be no problem. I don't know...Most 'old-style' german tuners still prefer the old 11-blade I heard once...
So don't be put down by the 11-blade: its damn good; it just needs to learn to behave in the presence of our type 4's

Regards,
Walter