Author Topic: Air filter  (Read 1523 times)

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boltaction

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Air filter
« on: September 23, 2006, 05:09:42 PM »
I realize I may be in the wrong forum, but I would appreciate if anyone can point me in the right direction.
I have a '95 Nighthawk 750, which I want to give a more streetfighter look.  As part of the transformation, I would like to move the battery and replace the air box with a conical air filter.  Can this be done?  Anyone here done it before?  I have heard this may mean re-jetting the carbs.  Are there kits for this sort of thing?  Any help or hints would be appreciated.  Thanks.
--boltaction

Offline Rsnip988

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Re: Air filter
« Reply #1 on: September 23, 2006, 05:15:53 PM »
there are kits, the only problem is you have to know which ones allow the proper flow air/fuel ratio.  I asked the Honda Guy What he recomended and he said it'd be best if they did it...(I am wondering if he is just trying to make a few extra bucks from me)  I would just ask an honest dealer what kit to buy...(then again the pro's in here probably know more than the mechs in the shop)  so forget i posted

Good Luck
R.K.S.

1976 CB750 K6 Full

1976 CB750 K6 Cafe'ish

Offline Klark Kent

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Re: Air filter
« Reply #2 on: September 24, 2006, 10:50:50 PM »
yeah definitely forget that.
i am assuming by conical you mean 'pod' type filters, and yes you will need to rejet.  what's more it will be a process of trial and error.  jets are cheaap though, so get a bunch and see what works, if pods are that important to you.  if you want ideas on how to move a battery look up a fellah on here called steviemac, he has david copperfielded his bat-tree right nice. 
good luck with the bike
-KK

ps- i am also assuming that sohc4 thinking will apply to your bike.  in a perfect world it would, but you could be a victim of progress and there could be a 'kit.' out there. 
« Last Edit: September 24, 2006, 10:54:29 PM by Klark Kent »
-KK

75 CB550k
76 Moto Guzzi 850T-3FB LAPD- sold
95 KLR650
www.blindpilotmovie.com

download the shop manual:
http://forums.sohc4.net/index.php?topic=17788.0
you'll feel better.

listen to your spark plugs:
http://www.4secondsflat.com/Spark_plug_reading.html

boltaction

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Re: Air filter
« Reply #3 on: September 26, 2006, 06:35:19 PM »
Thanks for the reply.  And if by SOHC4 thinking  you mean not being able to keep my hands off of my perfectly fine stock bike because i want to get my hands dirty and want to give the bike a new look?  yeah.  I'm new at this but eventually when I get my hands the right bike I want to work on a cafe racer project.  got my eye on a '76 cb550four.

Offline csendker

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  • Chris; '75 CB550 & a Crusty 'ol boat
Re: Air filter
« Reply #4 on: September 26, 2006, 06:58:47 PM »
In the SOHC4 world of reasonably simple carbs, when you switch to pods, you increase the flow of air, messing up the air/fuel ratio and leaning out the mix.  So, to keep from burning things up, you typically have to rejet up some (meter in more fuel) to compensate for the increased air flow.  You then do a bunch of plug chops at various throttle positions to set the carbs up properly.  I've heard tell that you should go for the good pods instead of the 'economy' ones as they <cheepies> have a tendency for turbulent inlet conditions and possible air flow issues on the outboard two pods while running at speed.

PS. go for the 550.
Actually runs --> 1975 CB550-K1
Projects ---> Crusty old boat
Gallery --> http://www.sohc4.us/gallery/v/members/personal/Christopher/?g2_navId=xada3c7ff