masterblaster
X-H2
Two 38's are equivalent to one 54 (you would add the areas, not the diameters).
You might want to look into the Jetworks taper bore 38's. Art says power wise they are equivalent to 44's .
not sure what you mean by area vs diameter. I have talked with art about those taperbore 38s they do sound nice,but he told me they significantly reduce run time cause they are making more air flow= more fuel. I have big carbs already,Im interested in trying to get the most ride time outa the 38s I can because they are the most efficient setup out there.
what mat posted is the main reason the 38s are more efficient than the single carb setups,yami didnt stop the single carb setup and go to the duals on 62t cases for no reason,the dual setup with 38s still makes more hp than the single 61x setup on just flow characteristics alone.I doubt its much different with most aftermarket 62t single manifolds,maybe with the exception of the atp.Ive riddin some nasty low end powered dual 38 limited 701s that got really long ride times,Im just not sure how much ride time i will get running them on a larger motor with alot more vacuum.
If i can get some adapters to put them on my boyesen intake plate I could always switch back to the 46s or 48s in a few min for riding other areas where fuel is not much concern.anyone ever seen anything that would work for this?
junkyard,those are the same ones im running but with a 80 pilot,prolly have to go up a good bit to feed this motor though.
kevbo,my big carbs are all tuned at the brink of lean as is for freeride use,zero topend use for me. If I lean the pilots even a 1/8 the motor will gasp at quick wot and then take off,yet with the long azz slow wake we have in and out,I have a pile of smegma coming out the exhaust all the time,running 40/1. these large carbs use almost the same amount of fuel in the slow wake and slow cruise to the ride spot in open water. as they do in all out ripping and rideing freeride use
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