Farmer Posted April 4, 2008 Report Share Posted April 4, 2008 Looking for filter setup for my SU's or some one now where I can find new ones? Can they be from any Brand of Su's? Larry Link to comment
Duke Posted April 4, 2008 Report Share Posted April 4, 2008 I know that K&N makes some. And I do beleive that they are the same for most if not all SU's. I just made my own. Link to comment
slodat Posted April 4, 2008 Report Share Posted April 4, 2008 Duke - would you give some info on how you made that? I really like it! Link to comment
Pacific coast Datsun Posted April 4, 2008 Report Share Posted April 4, 2008 The ones on my SU's arent really the right ones but will work for awhile.. the backing plate had to be modified to clear the choke cable mounts... heres what i believe to be the "correct" filters,probably K & N's... http://www.knfilters.com/universal/universal.htm Looks like the 3rd ones down may work "oval straight" Link to comment
Duke Posted April 4, 2008 Report Share Posted April 4, 2008 I made it using a buck to form the edges over. I used two pieces of particle board cut into the shape that I wanted. I then cut a piece of aluminum to slightly larger than that so that there would be a nice lip to hold the filter in place. I used 3031 aluminum that was annealed. Makes it really easy to work with and form. The two boards are then bolted together with the alum. sandwiched between them, and the protruding edge is beaten down with a leather hammer to make the lip. This was the first thing that I ever made for my car (4 years ago...wow time fly's). Not that hard and turned out pretty good for my first attempt at doing something like this. Link to comment
ggzilla Posted April 4, 2008 Report Share Posted April 4, 2008 Those small filters are very restrictive. The Nissan filter is more than 2 inches high. The rule is something like it should be so much higher than the throttle bore (it's in the Weber book if you want to look it up). Link to comment
pl521sss Posted April 4, 2008 Report Share Posted April 4, 2008 you can also use ITG Filters Link to comment
Farmer Posted April 4, 2008 Author Report Share Posted April 4, 2008 I found this from K@n site Which one would I need? http://www.knfilters.com/Racing/customcarb.htm Larry Link to comment
zerow Posted April 14, 2008 Report Share Posted April 14, 2008 I found this from K@n site Which one would I need? http://www.knfilters.com/Racing/customcarb.htm Larry Get these ones: SU 1-1/2 Bore SDR 5-7/8 1-3/4 E-3180 10 56-1390 As long as your SUs are the ones from a L18, L20B, these would be the correct air filters for you. I am fabricating my own custom air cleaners, will post pics as I get the parts together. Any taller and you run the risk of hitting your brake reservoirs. Link to comment
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