Has anyone ever seen an estimate of the CFM numbers for a stock cooling fan at say 4000 rpm?
Brian
Cooling fan output
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Bill_Bonow
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DanRemmers
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Re: Cooling fan output
Surely, you must me joking.
Yes, and please don't call me Shirley.
Yes, and please don't call me Shirley.
Re: Cooling fan output
http://www.offroadvw.net/tech/wes/fan.htmlhardingfv32-1 wrote:Has anyone ever seen an estimate of the CFM numbers for a stock cooling fan at say 4000 rpm?
Brian
This might help. I haven't read it over, so take it for what it's worth. But if it's on the Internet, it must be fact.
Re: Cooling fan output
Great article Jim, thanks for pointing us to it. Now I know why a bigger fan on the dyno didn''t make that much difference on the head temps.
The above post is for reference only and your results may vary. This post is not intended to reflect the views or opinions of SCCA and should not be considered an analysis or opinion of the rules written in the GCR.
Re: Cooling fan output
Brian,
The CFM numbers @ engines speeds are in the older VW "Without Guesswork" books that were issued to VW tech in the service shops, 1958-forward in my case.
I still have most of mine and if you need the exact numbers I'll dig them out and get the numbers to you.
Might take a while to unearth them but if you need the numbers let me know.
Fred Clark
The CFM numbers @ engines speeds are in the older VW "Without Guesswork" books that were issued to VW tech in the service shops, 1958-forward in my case.
I still have most of mine and if you need the exact numbers I'll dig them out and get the numbers to you.
Might take a while to unearth them but if you need the numbers let me know.
Fred Clark
Re: Cooling fan output
Brian:
According to a Haynes manual, the fan has an output of 19 cu. ft per SECOND at 3800rpm
Hope that helps.
Dietmar
According to a Haynes manual, the fan has an output of 19 cu. ft per SECOND at 3800rpm
Hope that helps.
Dietmar