 Additional Cooling, Running a 3"- 4" Hose directly onto the fan |
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| GBallantine |
 Feb 8 2007, 11:13 AM
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Member  Group: Members Posts: 74 Joined: 12-October 04 From: Toronto,Ont.Canada Member No.: 2,930  |
Any race guys ever run a 3 or 4 inch hose mounted off the front air dam or attached near the outside mirror thru the rear fire wall and directed onto the fan? Does it add any cooling effect? Any pics of setups?
GB |
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| john rogers |
Feb 8 2007, 09:30 PM
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
As Kevin noted the 3 inch ducts are way too small, with 2 of them only providing 14.13 square inches of cross section area for the air to move down. A SINGLE 6 inch duct provides 28.26 square inches of area so there is way less resistance to the flow into the engine. My racing mentor who used to race 914s back in the early 70's showed me picts of the large single 6 inch duct running right through the firewall into the front of the engine. It was the smooth heating duct type of metal tube. The front mounted fan had only FOUR blades so as long as the car was going fast it was cool. Yellow flag laps were very bad and could actually cook the engine, but then again it only had to last a single race weekend! I think the past post showed the ducts on Frank Beck's car and also the old Wayne Baker #22 IMSA car if I remember right?
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Posts in this topic
GBallantine Additional Cooling Feb 8 2007, 11:13 AM
groot I have... one of my many attempts to cool my engin... Feb 8 2007, 11:45 AM Demick Some quick calculations:
Fan is rated for 1700cfm ... Feb 8 2007, 04:50 PM
Randal
Some quick calculations:
Fan is rated for 1700cfm... Feb 8 2007, 06:27 PM davep
So Demick, for a race car situation, why not just... Feb 18 2007, 06:00 PM brant AJRS once told me that he finally solved heating p... Feb 8 2007, 05:12 PM Demick You could, but those axial type fans do not move e... Feb 8 2007, 08:00 PM Randal
You could, but those axial type fans do not move ... Feb 8 2007, 09:15 PM Demick
OK.. and the impeller fan probably moves a lot mo... Feb 8 2007, 09:44 PM gregrobbins The pictures John referrs to at in my Blog.
http:... Feb 9 2007, 10:12 PM grantsfo Pull the fan off and mount one of these pointed in... Feb 9 2007, 01:36 AM Jake Raby Gord, look at my post in the garage forum that sho... Feb 10 2007, 06:17 PM race914 Here is a partial view of Frank Beck's setup
... Feb 11 2007, 03:44 PM john rogers Probably the most efficient method, with all of th... Feb 18 2007, 09:33 PM gregrobbins
Probably the most efficient method, with all of t... Feb 25 2007, 02:00 AM |
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