identifying year of engine?

7 replies to this topic
  • cmwr250

Posted August 29, 2012 - 01:04 PM


I recently bought a motor from a guy who said it was out of a wrecked 2010 yamaha wr450f. Is there any way to confirm the year/model of the engine by the numbers on the engine? there is J324E-045886 stamped on top of the crankcase. I do not have the bike frame. I was just wandering if anyone could help me confirm the year of the engine? thanks

  • cavscout

Posted August 29, 2012 - 01:37 PM


I'm not sure, but according to a couple other threads I looked up, the 10th digit of your code is the year number. I'm not sure if that's the right number or not, but if it is your's appears to be a 2008.

Posted Image

here's the chart.

Edited by cavscout, August 29, 2012 - 01:40 PM.

  • cmwr250

Posted August 29, 2012 - 06:33 PM


I believe that chart only works for the serial/VIN on the frame of the bike. I could be wrong , but by looking at my other bikes, the chart only holds true for the frame vin

  • GuyGraham

Posted August 30, 2012 - 07:40 AM


black clutch and stator cases means 2008 or later

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • cmwr250

Posted August 30, 2012 - 09:32 AM


Here is some pics of it. So we know it is either a 2008,2009,2011. Is there any other features that could depict the year?Posted ImagePosted Image

  • zibbit u2

Posted September 01, 2012 - 11:03 PM


Ummm... that looks like a YZ450f motor....

where's the starter? plus the carb doesn't have the ACV on the side.

so looking at the parts manuals online.. it would appear that the black covers with the 5 valve titanium head yz450 was only from 08 & 09.

but, the black valve cover was only available on the 08 WR & YZ 450's.....

so... coles notes;

I think we're looking at a 2008 YZ450F motor. How many gears does it have?

Edited by zibbit u2, September 01, 2012 - 11:22 PM.

  • GuyGraham

Posted September 02, 2012 - 09:45 AM


Good spot - it is indeed a YZF motor, check out the pos of the clutch cable on the side of the barrel. WR's come in from the right side underneath the (missing) starter motor

I got a 2008 WR and it aint got a black cam cover - its gunmetal,

  • cmwr250

Posted September 03, 2012 - 06:51 PM


Ok, Thank you guys for all your help at identifying this as a yz450f.


Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.