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 Post subject: Stock Rod Length
PostPosted: Mon Sep 14, 2015 9:47 am 
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Joined: Wed Aug 26, 2015 6:40 am
Posts: 22
Anyone know what stock rod length is on a FL 250?


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 Post subject: Re: Stock Rod Length
PostPosted: Mon Sep 14, 2015 1:22 pm 
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Joined: Mon Dec 15, 2003 2:40 pm
Posts: 22512
Location: Chicago
FIRELS1 wrote:
Anyone know what stock rod length is on a FL 250?


Check out ProX http://www.pro-x.com/ they should have a parts catalog that will list the rod and give the length.


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 Post subject: Re: Stock Rod Length
PostPosted: Mon Sep 14, 2015 6:20 pm 
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Joined: Wed Aug 26, 2015 6:40 am
Posts: 22
Pro x doesn't even list the FL-250 in their catalog.


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 Post subject: Re: Stock Rod Length
PostPosted: Thu Sep 17, 2015 9:07 pm 
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Joined: Fri Jan 12, 2007 2:17 pm
Posts: 3620
Location: Wichita ks
Final found your info 121 center to center.
here is what I found:

1977 FL250 A PISTON + CRANKSHAFT
1978 FL250 A PISTON + CRANKSHAFT
1979 FL250 A PISTON + CRANKSHAFT
1980 FL250 A PISTON + CRANKSHAFT
1981 FL250 A PISTON + CRANKSHAFT
1982 FL250 A PISTON + CRANKSHAFT
1983 FL250 A PISTON + CRANKSHAFT
1984 FL250 A PISTON + CRANKSHAFT
1974 CR250M A PISTON + CRANKSHAFT
1974 MT250 A PISTON + CRANKSHAFT
1975 CR250M A PISTON + CRANKSHAFT
1975 MT250 A PISTON + CRANKSHAFT
1976 CR250M A PISTON + CRANKSHAFT
1976 MT250 A PISTON + CRANKSHAFT


13201-357-300
121 center to center
31 mm big end
22 mm small end
16.75 big width
20 mm small width

http://vintagedirtbikeforums.alp-sys.co ... ca0584f5db

Allright guys here is the info on the rods. I measured both a stock and kit rod. I also looked at the spec sheet on the Wiseco site to make sure of my measurements. The stock rod is 121mm center to center, 31mm big end bore, 22mm small end bore, 16.75 bottom width, and a 20mm top width. The Wiseco rod kit WPR124 which fits 84 to 2001 CR250 along with some ATVs has the exact same measurements except for length. It is 125.3mm in length. SO it is 4.3mm longer and needs the spacer plate to make it work. Hope this helps someone. As I said before, $142 from Badbrush is not a bad deal when you figure the custom made spacer plate, but if you have it like I did and only need a rod it is nice to order from my local dealer who gets overnight service from a couple of his suppliers.

Now what rod you got???

FYI the thrust washers are the same as the 350 and I did find in stock a rod and pin just no washers. Ill keep looking


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 Post subject: Re: Stock Rod Length
PostPosted: Thu Sep 17, 2015 9:35 pm 
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Joined: Fri Jan 12, 2007 2:17 pm
Posts: 3620
Location: Wichita ks
Forgot to add these pics


Attachments:
fl 250 Honda rod.jpg
fl 250 Honda rod.jpg [ 48.05 KiB | Viewed 752 times ]
fl250 rod chart.jpg
fl250 rod chart.jpg [ 63.55 KiB | Viewed 752 times ]
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