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Can XT600's run OK w/o an airbox and only cone filters? Can XT600's run OK w/o an airbox and only cone filters?
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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 6 Apr 2009
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Can XT600's run OK w/o an airbox and only cone filters?
I've been looking at removing my airbox from my 1984 XT600, but I was told by a Yamaha mechanic it wouldn't run well due to the lack of back pressure...is there any way around this? Anyone ever used cone style filters only?

Thanks,

Drew
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  #2  
Old 10 Apr 2009
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i havent done it but if you do you will deff need to get it set up on a dyno to get the mixture right.
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Old 10 Apr 2009
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Yamaha go to great lengths to get the set up on a motorbike spot on then we come along and put on loud exhausts and foam filters and mess it all up!!!

You'll have to set the bike up for sure - carb jets will have to be bigger (both sets).

Not too sure how much you'll benefit from it - keep us posted!!!
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Old 11 Apr 2009
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As well as needing rejetting, the induction noise will be very loud & possibly annoying.
I removed only the forward facing snorkel on the top of the airbox on my 2001 XT600E, hoping for more power but made no difference, but the induction noise was very loud.
Bob
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  #5  
Old 11 Apr 2009
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PLEASE, be kind to your XT.

the Airbox n filter arrangement is the best way of keeping dust out of your engine, and making sure the mixture is perfect..... ANY messing with the filters will make the carb a to set up.

as has been said, Yamaha spend $$$$$$ getting it right, what makes us think we can do better?
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Old 11 Apr 2009
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Iv tried k and n type filters on my srx4, had no running problems but had to cut the airbox away and i was never happy with the fit. There isnt much room between the carb mouths for the flange of the filters to fit. Certainly unacceptable for dusty conditions. Currently im running a home made foam filter with the new xt6e engine, 20mm filter foam in a small airbox type design in what little space i have (the new stainless oil tank takes up where the airbox was). Im happy with the performance but was expecting to rejet anyway as the exhaust is far from standard. Currently shes running well, any fine tuning of jeting is nt urgent.
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Old 13 Apr 2009
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Thanks for the feedback. I was only asking b/c my bike took a nasty fall right into a rock and broke my airbox...what luck. Anyway, I've ordered a new airbox and will promptly put it back in b/c I agree Yamaha took time to design it and I figure it's supposed to be in place.
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Old 14 Apr 2009
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Quote:
Originally Posted by alj9115 View Post
Thanks for the feedback. I was only asking b/c my bike took a nasty fall right into a rock and broke my airbox...what luck. Anyway, I've ordered a new airbox and will promptly put it back in b/c I agree Yamaha took time to design it and I figure it's supposed to be in place.
Good luck fitting your new airbox.
It is a full stripdown job, everything remotely close to it is in the way .You just can't get them in or out any other way!!!

You have been warned!!!
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Old 15 Apr 2009
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Thanks Tom, but I remember the zigsaw puzzle from when I dis-assembled the bike to paint the frame.

Andrew
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Old 16 Apr 2009
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Quote:
Originally Posted by Tenere Tom View Post
Good luck fitting your new airbox.
It is a full stripdown job, everything remotely close to it is in the way .You just can't get them in or out any other way!!!

You have been warned!!!

I'd attest to that! , I was attempting to change the air filter and undid about 15 screws wondering why nothing was coming loose to change the air filter,

Undid the seat undid the airfilter cover (a good place to hide cash me thinks!) and found that the airfilter was very clean anyway
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Old 16 Apr 2009
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Next time, make sure you have your BFH (Big Freaking Hammer) handy...works everytime!
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