Printable View
Anyone know if there is a flame arrester that flows decent? Currently K&N doesn't make one that will fit in my scoop. I had a Barbon that broke on the top. Running back to the ramp, with no flame arrseter, the boat ran much better. So, anyone have any ideas?
Contact hack job. I remember he saying that he had on the flowed better on the dyno than without one.
Brian call me today, I may have something that will work for you but we might need some machining ;)
Brian the one that taylorman is refeering too is the dual k&n one that i made and it also helped chris's motor pick up some hp. its a nice piece but i dont know if it will work with a single carb? dave had said they had tried testing one and it wasnt right. but who knows . i also have a barbon that you can gut if need be. ;)
There were no issues with the K&N on single carbs, the issue was using the oval elements on dual carbs. But that is beside the point for Disco.
Brian, since you're open engined, just gut all but the outer screen from your old SS arrestor. I know Randy did that and picked up a few R's from the extra flow, so it works. If you can find a K&N that will fit your app, you can always put a top and bottom together. Something I've been wondering about for all these guys running fiberglass scoops; why not make a K&N type element that fits in the opening of the scoop, secured by dzus fasteners on the side of the opening to a metal frame behind the element? Either that or just duct tape one of their "drop in" elements for a car airbox right across the opening of the scoop? :D Ghetofabulous, but it could be made to look cool if you were rockin an Autozone trucker hat while doing the instal and running the boat. Actually in retrospect, you would have to use an Airhog filter, put the sticker on your trailer and dash, AND rock the autozone black on black trucker cap while wrenching and driving :D :D :D
Chris
Hey Guys!
What makes a flame arrestor a "Flame Arrestor" anyway?
Is it the screen?
I fabbed up something on my boat that I've always assumed is illegal. Basically, I took some regular household "air register" material and sandwiched it between 2 metal screens and called it good. Is this a flame arrestor, or do I need to be more specific?
To be a true flame arrester, I think it has to be approved by the Coast Guard. I have another Barbon, and will probably gut it. The K&N fellas don't make one that fits inside my lil SS scoop, so I'm out there. I have a fiberglass scoop for my boat that I may run soon but I need to work on the stuff to secure it (my aluminum guy just rolls his eyes when I tell him I have an idea for my floating Sanford & Sons advertisement). I was hoping that all you fast guys had run into an off the shelf application for the little hoopty boats out there. I know Graffrig makes a stainless one that's $160 :eek: but in the pictures it looks to be similar to the Barbon, just stainless. I'm just looking for the easy fix. :notam:
i have one of those autozone trucker hats ;)
I'm just looking for the easy fix. :notam:
Turn the scoop around and forgettaboutit ;)
BTW, the Gaffrig one is just as you surmised... a fancy barbon deal.
As for Taylorman's question: yes, the only reason the K&Ns are "flame arrestors" is because the USCG says they are.
Chris
It's the screening mesh that makes a flame arestor, and it's the darned stainless steel that gets a USCG approval. I have a K&N Filtercharger on my Taylor but, since the manifold change I made is taller, I had to buy the off-road non-marine one with the drooped base. Their approved ones are all flat-based. As is I had to build my hood with a 2" arch in it (I was not cutting out the hood or building a "dog-house"), the marine one would have been 1 5/8" taller yet. The Admiral would not approve & I'd be in the "dog house". Maybe one day I'll buy the SS lid with the USCG stamp on it and fudge my way but for now, I am illegal with darned good intentions (and a paranoid search for fuel leaks).
It's the screening mesh that makes a flame arestor, and it's the darned stainless steel that gets a USCG approval. I have a K&N Filtercharger on my Taylor but, since the manifold change I made is taller, I had to buy the off-road non-marine one with the drooped base. Their approved ones are all flat-based. As is I had to build my hood with a 2" arch in it (I was not cutting out the hood or building a "dog-house"), the marine one would have been 1 5/8" taller yet. The Admiral would not approve & I'd be in the "dog house". Maybe one day I'll buy the SS lid with the USCG stamp on it and fudge my way but for now, I am illegal with darned good intentions (and a paranoid search for fuel leaks).
Maybe Bowtie Rick can answer better on this one, but basically, there is no difference between the element in the regular K&N filters and the one in the "USCG" approved arrestors. The difference is in the housing... as you stated, one has USCG approval, the other doesn't. I can find you plenty of USCG approved arrestors that are not stainless. If you have a K&N element in a top/bottom configuration that has no additional holes etc; I'm pretty sure it would pass USCG teting just the same as one of the units already approved. The issue comes down to intended use and insurabilty.
Chris
We once got a ticket for the scoop facing forward. Of course we beat it as we had Coast Guard approved arrestors. You might call Bassett, he carries USCG flame arrestors and may have something you can use. Good lick.
Maybe Bowtie Rick can answer better on this one, but basically, there is no difference between the element in the regular K&N filters and the one in the "USCG" approved arrestors. The difference is in the housing... as you stated, one has USCG approval, the other doesn't.
Chris
I called K&N and spoke to a tech after buying a 3364 and asking how I would prove my compliance if checked. I didn't see the little letters he told me about stamped into the side of the SS caps ( K&N Marine SAE J1928 ). The element itself also has these markings on top of its rubber seal/structure.
I asked him what the difference was on this one compared to the ones on my p/u trk and SA200. The screen looks identical :confused: I told him I was expecting to see an actual woven mesh on the marine one, but he said they were approved safe the way they were. :confused:
The only difference is the "clip" that holds the material together is stainless and so is the housing. The media itself is the same for all. What makes them "legal" is the 12 grand spent on getting it tested. Love the government :rolleyes: We do make some scoop filters (http://www.knfilters.com/Racing/scoopfilters.htm) that flow something rediculous like 1300 CFM. They are not marine legal as flames could still leave the carb causing an engine compartment explosion. That leads to another question asked. All a flame arrestor is supposed to do is contain a backfire within itself and not allow flame to leave into the surrounding air.