hello...
can anyone tell me which way these are meant to be fitted.. they are grooved but its the direction of the vanes im wondering about.. one way looks to spin air out and away and the other as if to pull air in..? any help would be great...
thanks.. pictures even better..
ta

 

IIRC it's the opposite to what you'd assume, so they look like they will push air out

 

Direction of the grooves are irrelevant.

The direction of the internal vanes are what matters. On the assumption the vanes are not radial/straight, then they should be facing so they are swept backward relation to the direction of movement.


.... see this link:

https://passionford.com/forum/genera...direction.html

 

Exactly

http://www.apracing.com/drawings/cp4670-106~7cd.pdf

(to steal the link!) I did look for it on the AP site but couldn't find it

 

excellent.. i knew it was the vanes that mattered .. would have thought it was the other way as in sucking air in but that is great.. thanks for the help..