Anyone know how much an '06 stock flywheel weighs?


13 replies to this topic
  • DaJudge

Posted June 24, 2010 - 02:11 PM

#1

I was trying to find a +9.21oz GYTR flywheel (on backorder everywhere) when a fellow TTer PMed and said he had one for sale that he had bought, but never installed, because he had sold his YZ. I specifically checked with him to ask if the one he had was the heaviest one ( adds 9.21oz) which is part# GYT-2S297-50-50. He confirm that it was, so I bought it from him.

Well, I got it in today and noticed that the install instructions which came with it are for the GYT-2S297-50-00, which is the lighter (+4.8oz) version. Now I'm confused, maybe disappointed.

The part itself is stamped F2S210 and weighs in at 23.2 ounces (658 grams). Does anyone know what a stock flywheel weighs or have one lying around (after you upgraded) that you could weigh and let me know for comparison purposes? If a stock one is 14 ounces, I'm good to go. If it's 18.4 ounces stock, I got sent the lighter one.

Thanks!:)

  • grayracer513

Posted June 24, 2010 - 02:47 PM

#2

I have a stocker. I'll weigh it this evening.

  • DaJudge

Posted June 24, 2010 - 03:49 PM

#3

I have a stocker. I'll weigh it this evening.


Muchas gracias senor.

  • majestic rider

Posted June 24, 2010 - 05:37 PM

#4

you are correct.the 9.21oz fw will weigh in at 23.04oz.mine did.the stock fw off my 08 450 weighed 13.79oz,or 12.57 troy oz.

  • grayracer513

Posted June 24, 2010 - 05:48 PM

#5

13.5 is what I got. Scale is probably trustworthy within an ounce or less.

  • DaJudge

Posted June 24, 2010 - 06:13 PM

#6

Excellent. Thanks very much guys.

Any tips/hints/suggestions on installing this thing? I did get the correct flywheel puller from Rocky Mtn. Will I likely need to get a new crankcase cover gasket?

  • grayracer513

Posted June 24, 2010 - 06:38 PM

#7

Not likely, but possibly.

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  • DPW

Posted June 25, 2010 - 06:35 AM

#8

Any tips/hints/suggestions on installing this thing? I did get the correct flywheel puller from Rocky Mtn. Will I likely need to get a new crankcase cover gasket?


small tip>> http://www.thumperta...850&postcount=1

  • DaJudge

Posted June 25, 2010 - 11:05 AM

#9

small tip>> http://www.thumperta...850&postcount=1


That's a great tip. My puller came with one of those protector caps and I was trying to figure out the proper use for it.:)

  • DaJudge

Posted June 25, 2010 - 02:05 PM

#10

New flywheel successfully installed. The Tusk puller worked like a champ.

Thanks for all the help guys.

  • DPW

Posted June 25, 2010 - 05:01 PM

#11

good deal....be sure and post your thoughts on the flywheel once you get a chance to go for a ride..

  • DaJudge

Posted June 25, 2010 - 07:22 PM

#12

good deal....be sure and post your thoughts on the flywheel once you get a chance to go for a ride..


Hopefully, that will be tomorrow morning (before it gets too darn hot).

BTW, where in Texas are ya?

  • DPW

Posted June 25, 2010 - 07:35 PM

#13

DFW area...heading to Nocona tomorrow morning to ride!

What about yourself?

  • DaJudge

Posted June 26, 2010 - 11:49 AM

#14

Tyler. Maybe sometime we can meet up at Buffalo Creek MX. I'm not very track-savvy (especially when it comes to jumping), so I can use all the help I can get.

Took the YZ out early this morning to Mud Creek ATV park (2000+ arces near Jacksonville). I was the only bike out there. They have a mix of trails (hard, sandy, muddy), some of which are just for the 4-wheelers who love mud. I pretty much had the trails to myself from 8 until about 10:30.

:):thumbsup: on the heavier flywheel. It makes a significant difference in the way power comes on in the low end. The YZ never stalled even the times when I was slogging it through a foot of muddy water. That change, combined with the 51t rear sprocket, makes the YZ quite capable on the trails. When I got it home, I had to scrape the mud off the fender bottoms and front frame area with a plastic putty knife while spraying with the hose.





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