June 20th, 2020, 01:18 PM | #1 |
ninjette.org member
Name: Charlie
Location: Brick NJ
Join Date: Feb 2018 Motorcycle(s): Harley Fatboy, Honda CX500, Harley XL1200C Sportster, 305 Honda Dream, Ninja 250 Posts: 174
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Valve Adjustment Question
I just checked my valves. Intake are .003” and exhaust .004”.
The bike runs perfect. It has 8,800 miles. Does anyone have any idea how many More miles will it take for the valves to be out of spec? Hate to move them for .001” of an inch. Your thoughts please. |
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June 20th, 2020, 11:28 PM | #2 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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The thing is, valve-clearances gets tighter as valve and valve-seat wear into each other. This moves the tip of stem upwards closer to cam. So you're pretty much at limit of range. You'll want to adjust clearances towards opposite end of range.
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June 21st, 2020, 03:46 AM | #3 | |
ninjette.org member
Name: Charlie
Location: Brick NJ
Join Date: Feb 2018 Motorcycle(s): Harley Fatboy, Honda CX500, Harley XL1200C Sportster, 305 Honda Dream, Ninja 250 Posts: 174
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Quote:
That is what I thought. I have really big hands. It was all I could do to get the feeler gauges in those tight spots. I hope I can make the proper adjustments. What is the torque spec for the nuts? Thanks again. |
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June 21st, 2020, 10:26 AM | #4 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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You're welcome!
Large end of clearance range is: Intake = 0.13mm (0.005 inches) Exhaust. = 0.16mm (0.006 inches) Locknut torque = 12 lb*ft |
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June 22nd, 2020, 06:57 AM | #5 |
ninjette.org member
Name: Charlie
Location: Brick NJ
Join Date: Feb 2018 Motorcycle(s): Harley Fatboy, Honda CX500, Harley XL1200C Sportster, 305 Honda Dream, Ninja 250 Posts: 174
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Thanks Dano,
I got them adjusted. Now I have to go back and do a final torque. Thanks, Again. By the way I own a bunch of bikes. I love riding the little 250 Ninja and getting close to the pavement. At 73 I still ride them like I stole them. Going tomorrow to pick up a 1939 BSA KM20. It is 500cc. They were used mostly for dispatch riders. Some were used for recon by the British if they did not have A Harley WLA available. Keep the skid marks in you underware and not on the pavement! |
1 out of 1 members found this post helpful. |
June 22nd, 2020, 08:58 AM | #6 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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That's awesome! I've been riding my big bikes less and less after getting Ninjette. Completely stopped using big bikes at track. Ninjettes are so much fun! |
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July 16th, 2020, 08:33 PM | #7 |
ninjette.org member
Name: Brandon
Location: Albuquerque New Mexico
Join Date: Jun 2020 Motorcycle(s): 1999 Kawasaki Ninja EX250 Posts: 39
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I got my Ninjette thinking that I would fix it and sell it cause 250cc's is just too small for a street bike. But now that I have it fixed and I've been able to ride it more I've decided to keep it!! It's unbelievable to me how much power these bikes have. And since replacing the mono shock the handling has improved quite a bit. I can't wait for the fork springs to get done!! I'm sure it will handle way better! I probably wouldn't have been able to get it going without the help of the fine people of this forum! 😁😄😛😋🤪
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1 out of 1 members found this post helpful. |
August 12th, 2020, 08:38 AM | #8 | |
ninjette.org member
Name: Brad
Location: Zanesville Ohio
Join Date: Mar 2020 Motorcycle(s): 2004 Ninja 250 Posts: 74
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Quote:
http://sonicsprings.com/catalog/prod...roducts_id=606 |
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