Author Topic: gxv390 balanceshafts?  (Read 6381 times)

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Offline CatDr.

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gxv390 balanceshafts?
« on: May 02, 2012, 12:06:26 am »
 unlike the gx390 the gxv has two balance shafts. pitch them or leave them? this engine will run 7000. and what do u recomend for balance%
Jerad Bennett  CatDr AppleriverMowtorspeedway

Offline CatDr.

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Re: gxv390 balanceshafts?
« Reply #1 on: May 18, 2012, 02:39:12 am »
apparently cuz im a newb no one will reply to my question. chuck you probably no that the gx& the gxv are diffrent critters. gx has one shaft& gxv has two. weight of shafts are twice that in gxv than the gx. so again i ask pitch them or leave them?
Jerad Bennett  CatDr AppleriverMowtorspeedway

Offline royalblu68f100

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Re: gxv390 balanceshafts?
« Reply #2 on: May 18, 2012, 07:55:11 am »
Very few people use these as there are no billet flywheels for them as of yet.  I know one fellow has modified a hub to fit but he does not get on here.  So, it may be possible that no one else knows the answers to your question.
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Offline George Herrin

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Re: gxv390 balanceshafts?
« Reply #3 on: May 18, 2012, 08:24:29 am »
Jumping straight in with an attitude and being impatient for n answer is a recipe for problems. The gvx is like Chris said N engine that is not used in out racing I can list them on 2 fingers. Biggest reason no Parts are available for them. We run a gx 390 and turn it 7000 and kept the balancer it is rotating in bAll bearings and I see too many with it removed struggle to keep parts Attached. As for your motor your gonna have to blaze a new trail meaning you will basically be on your own mostly. Some will have opinions but thee is simply little experiance with that motor. Good luck And be patient
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Offline Huffy044

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Re: gxv390 balanceshafts?
« Reply #4 on: May 18, 2012, 11:12:47 am »
I would go with 53% overbalance (you asked)
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Offline CatDr.

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Re: gxv390 balanceshafts?
« Reply #5 on: May 23, 2012, 11:12:18 pm »
thanks guys! sorry wasnt meaning to sound like i had an attitude cuz i dont . i figured more people ran these an was a little frustrated @ no responses. again i apologize. think ill leave shafts in n see what happens. i had my billet fly wheel neutral balanced and will try that. might b good or i may have a expensive paint shaker! lol thanks again
Jerad Bennett  CatDr AppleriverMowtorspeedway

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Re: Re: gxv390 balanceshafts?
« Reply #6 on: May 24, 2012, 07:48:58 am »
I think that the guy from Moutian machine has built 1 for guy that runs 1 down south last I knew it was still running and it was very strong engine! Never heard how he passed the billet wheel deal!

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