Bonnet Vents / Louvres

[Alan G]

Looking for a pair of sierra cosworth bonnet louvres for a project bonnet!

Anybody know where I might find them?

[Copey]

breaker, ebay??

[Copey]

these any good??

 

http://cgi.ebay.co.uk/RS500-3-DOOR-COSW ... dZViewItem

[RETRO_AL]

Put a wanted post on Alcoholics Anonymous m8 or anotherfordforum

[Alan G]

[bomber1]

www.speedshack.co.uk

[4parajon]

Does anyone know where you can have the vents/louvres pressed out as oppose to fitting the plastic ones in??

[Messenjah]

driver had some louvres pressed out of his bonnet m8

[MK2Ed]

Does anyone know where you can have the vents/louvres pressed out as oppose to fitting the plastic ones in??

 

Yes, Driver has them - PM him

[Durham Fiesta]

think theres a company called cool louvres that do them

[Durham Fiesta]

www.coollouvres.com thats the ones i was thinking of

[4parajon]

Will give them a try, already asked Driver, he did'nt know as they were in when he got it

[Mk2Jo]

Cool Louvres are 10 mins down the road from us

[hotrodholty]

you used to be able to buy them on a sheet of steel about 2ft square from ebay, we used them on a manta and with a bit of playing round looked like the original bonnet had just been punched.

[Retromotorsport]

If your thinking of using Lourves to get air in.. or hot air out, they dont work.. the boundary layer of the car dosnt let hot air out, untill the car has stopped, and the same layer dosnt let air in either, the only thing that will allow air to enter or exit a flat panel that is parallel is the NACA duct, as devoloped by Nasa ..

 

As proof of the boundary layer .. polish your car, and wait for it to rain.. big beads of water on your bonnet, drive down the road and the only time those beads leave the bonnet is when you break, and they fall off the front edge of the bonnet, ie against the airflow ..

[MK2Ed]

If your thinking of using Lourves to get air in.. or hot air out, they dont work..

 

Ooops

[hotrodholty]

If your thinking of using Lourves to get air in.. or hot air out, they dont work..

 

Ooops

of course louvres and vents work you dumbass.

if they dont, do all the super cars, hotrods, f1 cars, planes, helicopters, trucks, boats, space shuttles ect ect ect just have em for show.

[Retromotorsport]

If your thinking of using Lourves to get air in.. or hot air out, they dont work..

 

Ooops

of course louvres and vents work you dumbass.

if they dont, do all the super cars, hotrods, f1 cars, planes, helicopters, trucks, boats, space shuttles ect ect ect just have em for show.

 

They dont have Lourves ... " dumbass" .. they have NACA ducts on all flat surfaces ...

 

If you have anything other than a NACA duct it wont work unless its in a positive pressure area or a negative pressure area .. or of course you can drag it in via Fans .

[Rick]

excuse my ignorance but whats a naca duct

[hotrodholty]

If your thinking of using Lourves to get air in.. or hot air out, they dont work..

 

Ooops

of course louvres and vents work you dumbass.

if they dont, do all the super cars, hotrods, f1 cars, planes, helicopters, trucks, boats, space shuttles ect ect ect just have em for show.

 

They dont have Lourves ... " dumbass" .. they have NACA ducts on all flat surfaces ...

 

If you have anything other than a NACA duct it wont work unless its in a positive pressure area or a negative pressure area .. or of course you can drag it in via Fans .

yes they do use NACA ducts (which stands to reason as nasa designed them).but to say louvres dont work as a cooling aid is wrong. yes the NACA vent is a better more effective design of getting air in, but when being used on a bonnet to remove heat from the engine bay putting a load of louvers in the bonnet/engine cover has got to aid airflow and rising heat out of the engine bay. the boundary layer around the car is irrelavent as the flowing air is coming from under the car and through the grill/radiator, through the engine bay and out of the louvers taking the heat with it.

.even mr ford used louvers to do this on the inner wings of sit up and beg pops.

iv double checked and iv found shit loads of planes, boats, ect all using louvers as vents for heat to escape. [/img]

[Retromotorsport]

And the sit up and beg pop is the pinnicle of modern areodynamic design

[hotrodholty]

And the sit up and beg pop is the pinnicle of modern areodynamic design

some people on here think it is

cant beat a bit of banter