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June 6th, 2014, 08:02 PM
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#1 |
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ninjette.org member
Name: Eric
Location: VA
Join Date: Apr 2009 Motorcycle(s): '01 Ninja 250 Posts: 62
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different style connecting rod bolts?
So I got my four connecting rod bolts today for my 250 rebuild. But I got two of one style and two of another? They're both the same party number, but they look different and one style odds a little longer than the other. What's up with this, any idea?
So I got my four connecting rod bolts today for my 250 rebuild. But I got two of one style and two of another? They're both the same party number, but they look different and one style odds a little longer than the other. What's up with this, any idea?  http://imgur.com/GwoTXSk |
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June 6th, 2014, 08:39 PM
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#2 |
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RIP Alex
Name: Cuong
Location: Houston, TX
Join Date: Apr 2011 Motorcycle(s): '10 250r, '09 265r Posts: A lot.
Blog Entries: 2
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New for me. I only am familiar with the lower one pictured and that's working with the 08+ and 300
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HalfFast Racing Team Serving Greater Houston Area Riders:WFO Riders MotoHouston HPC CMRA Ride Smart Fastline Lone Star Track Days |
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June 7th, 2014, 01:21 AM
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#3 |
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ninjette.org certified postwhore
Name: Eric
Location: Iowa City
Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
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I would not Use the top bolt. I am really funny about matching hardware when it does not matter. With things that spin at 13000 rpm I would want all four bolts to match and look like the lower one.
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Top speed 123.369mph. Ohio mile Worlds fastest 250 ninja |
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1 out of 1 members found this post helpful. |
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June 7th, 2014, 05:35 PM
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#4 |
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ninjette.org member
Name: jim
Location: texas currently in Temecula Valley CA
Join Date: May 2013 Motorcycle(s): honda crf230l & 2013 ninja 300se wife has Honda crf230l & honda cbr250r repsol Posts: 222
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The top one looks like a stress fracture waiting to happen. I wouldn't use them.
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June 7th, 2014, 06:00 PM
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#5 |
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wat
Name: wat
Location: tustin/long beach
Join Date: Sep 2009 Motorcycle(s): wat Posts: Too much.
Blog Entries: 5
MOTM - Oct '12, Feb '14
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what is the purpose for the inner spline? i tried to find info but couldn't find much outside of that its used for alignment and on some engines like the ls3 they use multiple thread sizes in the fastener to control stretch on the first few threads.. but these run the entire inner length? is it just alignment? they are forged and then machined right? so forging them that way makes it easier to machine them? seemed like it has something to do with controlling the stretch but i really couldn't find any info? :/
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June 7th, 2014, 06:44 PM
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#6 |
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ninjette.org certified postwhore
Name: Eric
Location: Iowa City
Join Date: May 2009 Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
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The flutes are rolled into the bolt. It makes them stronger and probably has something to do with vibration harmonics.
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Top speed 123.369mph. Ohio mile Worlds fastest 250 ninja |
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