CBR 1000F "Hurricane" 1987-1996 CBR 1000F

Stock jetting and seals question

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Old 06-30-2011, 09:34 AM
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Default Stock jetting and seals question

Hey guys I have a 87 Hurricane 1000 that I am trying to bring back to life. The PO had 140 main jets in there and the bike runs like crap, I can only get it to fire with the air pods completely off, and then only for a minute. Way too rich I assume. So I need to get some new jets, does anyone know what the stock main jet size is? Also, what do you all recommend for pod air filters? Normally with my other bikes I just go one size above stock, but then I have a stock starting size to begin with...

Also has anyone had any problems with the seal around the shift shaft? It gives me a little drip drip unless I have the bike on centerstand. Anyone know where I could buy a replacement?

Thanks
 
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Old 06-30-2011, 10:21 AM
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Jet sizes
Look in the MANUALS SECTION
Download the full manual free - will have jet sizes

Also, what do you all recommend for pod air filters
These bikes are VERY hard to tune with pod filters - they like to run "still air" ie with an airbox. Try and find an original airbox on e-Bay if you can........

Shaft seal - go to Honda Kawasaki Polaris Suzuki Yamaha Motorcycles ATVS Scooters Utility Vehicles

Hope this helps
 
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Old 06-30-2011, 11:44 AM
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i run my bike with absolutely zero filtration and i am still on stock main jets (i also have a full SSR2 V&H exhaust). it runs really lean idling/cruising (good for MPG), slightly fat in the mid range (probably could adjust my needles to compensate for this), and nice and lean up top (~13.5 AFR). i run a wideband AFR gauge on my bike all the time so i can watch what it's doing. runs a bit rough just off idle, but for the trade off of how it runs up top i dont mind it running choppy and lean at low RPM.

i believe the stock jets are somewhere in the 125 area? i dont remember since i havent had it apart in a while...
 

Last edited by Bio248; 06-30-2011 at 11:47 AM.
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Old 06-30-2011, 04:53 PM
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OK thanks do you know what year CBR airbox will fit my 1987? There arent a lot of 87 parts on ebay at the moment.

Thanks
 
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Old 06-30-2011, 07:55 PM
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Originally Posted by swapdip
OK thanks do you know what year CBR airbox will fit my 1987? There arent a lot of 87 parts on ebay at the moment.

Thanks

LINK ......... take your pick

Thread on Jet Sizes

ALSO a VERY Handy Link on Jets for different configurations

Search button works good

Welcome to the Forum BTW
 

Last edited by Sprock; 06-30-2011 at 10:30 PM.
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Old 07-01-2011, 10:11 AM
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87 and 88 airbox will fit. Here's one for $29 US and seems in good order

88 cbr1000 cbr 1000 F Hurricane air filter box airbox | eBay
 
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Old 07-01-2011, 12:00 PM
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Thanks guys, just bought one for $33 shipped. Also have some 116 and 120 main jets on the way as well. Hopefully this should sort me out.

Thanks for the help.
 
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Old 07-01-2011, 02:36 PM
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Good deal man , keep us in the loop on how it turns out
 
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Old 07-06-2011, 03:05 PM
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So they sent me 118 main jets by mistake, but I threw them in there anyway. The PO had drilled 2 small holes in the back of each pod filter, so while I am waiting for the airbox to come in the mail I assembled everything together to see how it runs. Idle is smooth and low, it is a little gutless from 1000-3500, but above that it is a true screamer. As fast as I would want it to be. I think we may be running a bit rich still because I get some faint black smoke when I really crank it, but I am going to run it around a bit and see what we see. Thanks guys for the good advice.
 
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Old 07-06-2011, 04:05 PM
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adjust your needles for the low end.
 


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