air filter

For all your questions, problems and DIY stories
Post Reply
r1nod
Upcoming E21 fanatic
Posts: 60
Joined: Sun Mar 20, 2005 8:14 pm
Location: ireland

air filter

Post by r1nod »

which is better for the weber 32/34 k&n or ram air also wa hight would it have to be not to touch the bonnet


User avatar
tommi_e21
E21 Mad
Posts: 1536
Joined: Fri May 16, 2008 2:31 am
Location: letchworth sg61hy

Re: air filter

Post by tommi_e21 »

well a ram air will always be better as you are forcing in cold air rather than sucking hot air from all over the engine bay. faster colder air means a lower pressure in the venturi which means more fuel and more bang for your buck.

thats kinda the theory but sometimes not the case

best thing IMO is to have a large open top carb with a big air scoop on the bonnet (subaru style) which slams lots of cold air on and around the carb but doesnt necasarily force it into the opening. placing a scooby scoop on your e21 however will get you shot
BMW e21 - 320tsi - Project Rajay
Audi 50 RS
1/2 a BMW 2002 tii - Project Nipon
Smart 4/2 84bhp cabriolet - Company car
User avatar
PK
Upcoming E21 fanatic
Posts: 40
Joined: Sun May 23, 2010 2:54 am
Location: South Birmingham

Re: air filter

Post by PK »

i quite like my stock air box with a K&N stuffed in it... would like to try a ram air or cone style filter set up though. let us know if you see any improvements...

PK
1983 Black 316 manual
Rusty Mk3 Golf TDi (let's if it makes it through an MOT)
Post Reply