Author Topic: Gxv 390 flywheel  (Read 5313 times)

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Offline flyingw

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Gxv 390 flywheel
« on: February 22, 2014, 06:53:10 PM »
After much research and hours scouring part numbers, I still can't find a definite answer whether the billet gx390 flywheel will fit the gxv 390 vertical. Anyone know for sure from experience before I buy 1? Any info would be appreciated. Thanks. :confused:


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Offline 2nstoys

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Re: Gxv 390 flywheel
« Reply #1 on: February 22, 2014, 08:14:02 PM »
I believe it is the same but call ARC to confirm. Very nice people to deal with.
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Offline George Herrin

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Re: Gxv 390 flywheel
« Reply #2 on: February 23, 2014, 05:06:06 AM »
They may not know what or if it will cross over to the GXV but they might. Thats the trouble with this stuff. IF they dont and you find out it does let us and ARC know so they can inform the next racer that comes along with the same question.
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Offline flyingw

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Re: Gxv 390 flywheel
« Reply #3 on: February 23, 2014, 07:17:31 AM »
I certainly will. I've read a few old posts from here that are the opposite of each other. Lol. 1 says yes they will fit as well as the valve train and reciprocal assembly, and the other says the crank tapers are different. I believe their names were Chuck and Ferris?
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Offline George Herrin

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Re: Gxv 390 flywheel
« Reply #4 on: February 23, 2014, 09:20:29 AM »
Chuck would be a very viable and reliable source he builds awesom hondas and is a honda dealer. If he speaks on a subject he knows what he is talking about.
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Offline flyingw

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Re: Gxv 390 flywheel
« Reply #5 on: February 23, 2014, 11:58:42 AM »
Perhaps he will catch wind of this post and add his knowledge or Mabey I cud send him a message direct? O ya since I'm chatting with you any way I should ask u if u have seen any reason y I can't get shipping rates from ec to Canada. I tried to order the 700 trans input shafts bushing the other night but got held up in shipping.
pain and price are directly related to throttle position

Offline George Herrin

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Re: Gxv 390 flywheel
« Reply #6 on: February 23, 2014, 03:36:10 PM »
international orders must call their orders in
George Herrin #6
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Offline flyingw

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Re: Gxv 390 flywheel
« Reply #7 on: February 23, 2014, 04:29:18 PM »
Ohhh ok. Ddnt know that. Thanx.
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Offline George Herrin

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Re: Gxv 390 flywheel
« Reply #8 on: February 23, 2014, 05:10:11 PM »
Your welcome
George Herrin #6
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Offline royalblu68f100

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Re: Gxv 390 flywheel
« Reply #9 on: February 23, 2014, 07:43:56 PM »
Micheal Paccione is currently running a gvx 390 in cp, if I get in touch with him I'll ask what he had to do to run the billet flywheeel.
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Offline fx28

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Re: Gxv 390 flywheel
« Reply #10 on: February 23, 2014, 08:54:55 PM »
The flywheel will fit. The problem is getting a starter that will work.  The solenoid shift starters for the gxv I think has the right gear, but they are hard to find. They came on the Honda 3000 series rear engine riders, 3009 and 3011 models. They stopped making them in the early 90's and I don't recall seeing that type of starter used on anything else. Probably still get one thru parts but would cost more than flywheel. Last one I had I sold to Ken Jones. keep an eye on ebay or craigslist, you might get lucky.


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Offline flyingw

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Re: Gxv 390 flywheel
« Reply #11 on: February 24, 2014, 06:43:59 PM »
Thanks alot to all of u. This site rocks. I currently have a pull starter on it right now and thats all i wud use anyway so looks like i should b in good shape. Cheers
pain and price are directly related to throttle position

Offline CatDr.

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Re: Gxv 390 flywheel
« Reply #12 on: February 24, 2014, 07:34:41 PM »
i bought a gx390 flywheel for a 2005 gxv390 3yrs ago and let me assure you, that did not fit my engine, the crank tapers are different. the gxvs have a larger taper than the gx so u cant even rebore hub. i ended up having a flywheel made.
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Offline Cromwell C4

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Re: Gxv 390 flywheel
« Reply #13 on: February 24, 2014, 09:22:23 PM »
Well now thats two totally different answers given here.. maybe there is a difference in taper between year models?
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Offline CatDr.

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Re: Gxv 390 flywheel
« Reply #14 on: February 25, 2014, 06:18:25 AM »
i did say that wrong..the gxv taper is smaller...cuz when you put flywheel on engine it hit the block before it gets tight on the taper. there maybe a diffrence in model years tapers i would get ur mic out and measure beginining of and end of taper and the width of taper and call arc. im just trying to save you what i went thru... i ended up buying two jr dragster 5hp flywheels off of ebay and robbing flywheel magnets to make new wheels. yes.... im that dumb cuz i also run a gxv620 in the bp class
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