 04 america air box mod
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Joined: May 2016
Posts: 11
Complete Newb
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OP
Complete Newb
Joined: May 2016
Posts: 11 |
I would like to drill my air box but I'm not sure on where or how to do it. Right now I'm running Bomber exhaust, K&N filter,Bell mouth and all snorkle removed. Does size, number and location of the holes matter.
mikej
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Re: 04 america air box mod
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Joined: Sep 2015
Posts: 797 Likes: 17
3/4 Throttle
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3/4 Throttle
Joined: Sep 2015
Posts: 797 Likes: 17 |
Read this it may help. Air Box Mod in Vault
Road Rash Heals. Freckles Grow Back. Ride
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Re: 04 america air box mod
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Joined: May 2016
Posts: 11
Complete Newb
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OP
Complete Newb
Joined: May 2016
Posts: 11 |
Thanks can't get any plainer then that✌️Do you or anyone know where I can order thuxton needles?
Mikej
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Re: 04 america air box mod
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
Posts: 5,720 |
BikeBandit for carb needles, I have gotten better performance from T-Bird Sport needles with an opened up airbox, YMMV.
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Re: 04 america air box mod
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Joined: May 2016
Posts: 11
Complete Newb
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OP
Complete Newb
Joined: May 2016
Posts: 11 |
Thanks that's what I'm after. I'll check them out.
Mikej
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Re: 04 america air box mod
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Joined: Aug 2007
Posts: 10,715 Likes: 4
Should be Riding
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Should be Riding
Joined: Aug 2007
Posts: 10,715 Likes: 4 |
I was running Thruxton needles on mine with lighter slide springs from a Kawasaki Ninja and got great response and power curve
Always remember to be yourself. Unless you suck. Then pretend to be someone else.
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Re: 04 america air box mod
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
Posts: 5,720 |
I suggest you shoe goo glue some stainless fine wire mesh screen on the bottom hole you drill. I was finding bugs and leaves and F.O.D. of all description in my filter after the modification. There are the baffles inside the box you can make go away as well, if you use a hot knife to remove the baffles, you will not have to deal with the plastic sawdust that will need to be cleaned out. With Epco exhausts, I was able to go to 142 main jets with the airbox opened up and a good cheap power curve gain. if you haven't already, the thumbscrew primary adjusters are a worthy investment too.
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Re: 04 america air box mod
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Joined: May 2016
Posts: 11
Complete Newb
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OP
Complete Newb
Joined: May 2016
Posts: 11 |
thanks for all the great advice, but i seem to be doing something wrong. i went on bike bandits web site and can't find any of the needles you suggested. ( it's tuff getting old i'm now getting back into it since the late 60's ,early 70's and so much has changed.)
mikej
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Re: 04 america air box mod
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
Posts: 5,720 |
Do your search under OEM parts for a 2007 Thruxton, then sub classification fuel and air, then pick carburetor parts, IIRC. BikeBandit Don't forget, you need to order two. Same procedure for TBS needles or even the lighter diaphragm springs Dave suggested. As you can see BikeBandit s exploded views can be a good resource, even if all you do is take advantage of the exploded views available and never buy a single thing from them..
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Re: 04 america air box mod
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Joined: May 2016
Posts: 11
Complete Newb
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OP
Complete Newb
Joined: May 2016
Posts: 11 |
I'll tell ya I'm so glade eddy turned me on to this site it is and you guys are the best thanks again. 🍺
Mikej
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Re: 04 america air box mod
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Joined: Apr 2007
Posts: 3,059 Likes: 8
Loquacious
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Loquacious
Joined: Apr 2007
Posts: 3,059 Likes: 8 |
Mike, You might want to try the Triumph Twin Power "Breath" bellmouth before you cut up your air box. Opening the bottom has caused water ingestion problems with some riders in heavy rain.
12 Rocket Roadster
03 Bonneville America
69 BSA Firebird Scrambler
73 Yamaha TX 750
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Re: 04 america air box mod
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Joined: Feb 2008
Posts: 2,671 Likes: 15
Loquacious
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Loquacious
Joined: Feb 2008
Posts: 2,671 Likes: 15 |
+1 to what Gregger advised...
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Re: 04 america air box mod
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
Posts: 5,720 |
Whatever happened to using a Polaris rubber Bellmouth, I remember buying mine for $8.95. And if you have a sharp knife and some hand/eye skills you can get two of them.
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Re: 04 america air box mod
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Joined: Jan 2008
Posts: 1,170 Likes: 14
Learned Hand
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Learned Hand
Joined: Jan 2008
Posts: 1,170 Likes: 14 |
Quote:
Mike,
You might want to try the Triumph Twin Power "Breath" bellmouth before you cut up your air box. Opening the bottom has caused water ingestion problems with some riders in heavy rain.
I ran with the cut out airbox (Polaris bell mouth top and bottom) for several year, thru all sorts of weather and massive heavy rains. No issues with water getting in.
Unless you are fording streams this is the cheapest most effective mod you can do.
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
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Re: 04 america air box mod
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Joined: May 2010
Posts: 5,720
Check Pants
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Check Pants
Joined: May 2010
Posts: 5,720 |
Quote:
Quote:
Mike,
You might want to try the Triumph Twin Power "Breath" bellmouth before you cut up your air box. Opening the bottom has caused water ingestion problems with some riders in heavy rain.
I ran with the cut out airbox (Polaris bell mouth top and bottom) for several year, thru all sorts of weather and massive heavy rains. No issues with water getting in.
Unless you are fording streams this is the cheapest most effective mod you can do.
Me too almost, Polaris on top and shoe gooed stainless screen on the bottom and I went through a foot deep Desert Flash Flood and had no water or any other crud being sucked up in there. If I still ran airboxes, I would repeat the same mods.
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