• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

for you hot rodders

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

ocwanabee

Registered
Joined
Jun 17, 2001
anyone remember the velocity stack it was like a big funnel to put on top of your 4bbl carb.I made one for my hsf fan it lowered my temp by 2 degrees.hope this helps some one,maybe now I need headers? patent applied for & pending
 

CalCoolage

Registered
Joined
Jun 30, 2001
I don't know anything about hot rodding. You mean you put a funnel going to the fan? How wide is it? How tall is it?

It could be it is pulling in air that is a little cooler because it is a little distant from the hot outlet of the HSF, and forcing the hot air to go further before it re-enters the inlet, so diluting the heat.
 

cjtune

Member
Joined
Dec 18, 2000
I think some fellas have done this with old vacuum cleaner hoses for ducting. Basically done by drawing in the air directly from the outside of the casing. It's somewhat effective if you have anemic case ventilation.
 
OP
O

ocwanabee

Registered
Joined
Jun 17, 2001
actually used the bottom of a plastic cup same diameter of fan and about 1.5 inches high it is a little wider at the top, i believe it pulls in cooler air instead of recirculating air by the hsf. I think i need to change one of my fans near cpu and make it exhaust instead of pulling air in.I have 3intake &1exhaust +the psu fan blowing out.
 
OP
O

ocwanabee

Registered
Joined
Jun 17, 2001
just some 2 inch tape for now not duct tape I am planning on upgrading my hsf & fan combo
 

proze

Senior Member
Joined
Dec 22, 2000
Location
Pretoria, RSA
i have a 2m piece of dryer-hose running from my case to the window... a 120mm high-output sunon fan pulls cold air in right over the hsf!! makes a big difference in winter!
 

coldmop

Registered
Joined
Mar 4, 2001
velocity stacks are neat, there is some complicated aerodynamics going on there, dryer hose?
 

CalCoolage

Registered
Joined
Jun 30, 2001
coldmop (Jul 01, 2001 06:31 a.m.):
velocity stacks are neat, there is some complicated aerodynamics going on there, dryer hose?

Some guy had a site showing how he ran a hose to a window air conditioner near the computer.
 
OP
O

ocwanabee

Registered
Joined
Jun 17, 2001
I made another modification . I Put on a wider velocity stack, with an 80mm fan in it, my hsf fan rpm went up from 4500 to 5500rpm.Temp went down 2 more degrees