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I realized that the WEIAND airfilters I'm using on my 3 bolt carbs may be too small (surface area). This could account for the engines apparent thirst, though I'd used them on the previous engine (B18D).
These were an aftermarket(IPD) alternative to replacing expensive 3 bolt filters (20 years ago?). Sorta like the bottom half of a K&N - metal disk with holes and a lip, a quasi hemispheric plastic cage which supports a foam disk (5/8" thick). There's a chromed, expanded metal lath type grill/cover and a retaining clip. The advandage is that you can clean replace the foam (I just slice up grey foam on a bandsaw and cut out circles). WEIAND filters no longer available. But, this may be faulty thinking (you're using just ANY foam??), and I hear the rest of you saying spring for the K&N filters. My reluctance to do this has to do with the crankcase ventilation from the valve cover to the front carb. K&N's don't accomodate this. So, I'm spending $80+ for the be-all end-all of filters and then drilling and soldering a tube onto the nice, flimsy, chrome housing? I'd rather make a pair up myself out of bronze and just buy the filters. Anybody else interested in a set? Can one just buy the proper size filters from K&N, and fab the housings?
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