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450r carb on 400ex?

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  #1  
Old 08-23-2005 | 11:48 PM
bodia21's Avatar
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Default 450r carb on 400ex?

Ya I heard somewhere about some guys putin a stock 450r carb on a 400ex. I was wondering if you guys thought this would be a good power gain? I mean it seems to me that it shouldnt be any worse than the stock 400ex carb...but im just curious if it will really make that much more power. I race mx right now with a 400ex with a 416 kit with 450r intake valves after market air box and filter and a pro circuit pipe and it runs pretty sharp, so i didnt know if u guys thought that this would be a good investment...i just dont want to spend the money on the edelbrock. thanks
 
  #2  
Old 08-24-2005 | 06:10 AM
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Default 450r carb on 400ex?

forget edelbrock anyway. if you ever get the cash, buy FCR. $420 at C&D Racing.

don't know about the 450r carb, but I would guess any carb bigger than stock 400ex would help.
Just save money and get FCR. Do it up right with your 416.
 
  #3  
Old 08-24-2005 | 06:25 PM
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Default 450r carb on 400ex?

I was very please with the gain I got from the 450R carb on my 416. The dyno showed similar gains(about 3hp) between the 450R carb and FCR carb on the 416, although the FCR is supposed to rev quicker. Nice thing is you can pick up the 450R carbs new for $165 or used in the $100 range.
 
  #4  
Old 08-24-2005 | 10:55 PM
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Default 450r carb on 400ex?

Originally posted by: khen
I was very please with the gain I got from the 450R carb on my 416. The dyno showed similar gains(about 3hp) between the 450R carb and FCR carb on the 416, although the FCR is supposed to rev quicker. Nice thing is you can pick up the 450R carbs new for $165 or used in the $100 range.
So it was a noticiable power gain? i think it might be well worth the money.

 
  #5  
Old 08-25-2005 | 12:52 AM
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Default 450r carb on 400ex?

Yes it will work...

 
  #6  
Old 08-25-2005 | 05:47 AM
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Default 450r carb on 400ex?

one of my favorit mods yet [img]i/expressions/face-icon-small-smile.gif[/img]



-------------
99 440ex
84 250r
 
  #7  
Old 04-28-2007 | 10:25 PM
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Default 450r carb on 400ex?

Do you have to change anything with this carb my buddy just bought one for his 400. we are putting it on this weekend what jetting should I start with also will the throttle cable work?? Stock bore w/ pipe and cdi box
 
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