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Allready tested ? Removed balance shafts on the k24 (gains?)

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Old May 7, 2004 | 07:16 PM
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Default Allready tested ? Removed balance shafts on the k24 (gains?)



it's a chain, but i'm curious on the gain of the less drag on the rotating assembly....

idea's ?
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Old May 7, 2004 | 07:37 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (HotWheelz)

Hmm. Well, if it follows the H22 tradition, I'd label it "minimal, but measurable."
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Old May 8, 2004 | 06:35 AM
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Default Re: Allready tested ? Removed balance shafts on the k24 (HotWheelz)

These motors have balance shafts for a reason, motor longevity will be affected.
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Old May 8, 2004 | 06:37 AM
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Default Re: Allready tested ? Removed balance shafts on the k24 (Gerhard_001)

look,

I built a race motor h22a and it held fine, taking some over 9k rev's, and i did put about 8k miles on it in a couple months of street ripping... no wear so get some concreat proof before you splater rumors.. i built it and i prooved it... just looking for any others if they have....
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Old May 8, 2004 | 06:51 AM
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Default Re: Allready tested ? Removed balance shafts on the k24 (HotWheelz)

i think it'll be more worthwhile to just keep it. it'll probably net 5whp at most, but if that's what you're looking for, then do it. I just can't stand a vibrating car all the time
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Old May 9, 2004 | 04:16 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (HotWheelz)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HotWheelz &raquo;</TD></TR><TR><TD CLASS="quote">... just looking for any others if they have....</TD></TR></TABLE>

Pssst...

Honda Challenge.

Corey Jacobs.

H22.

"Minimal but measurable."



The motor's very far from blowing up, and sees high revs very frequently.

I just don't know how that translates to K24 experience.
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Old May 9, 2004 | 05:23 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (Gerhard_001)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Gerhard_001 &raquo;</TD></TR><TR><TD CLASS="quote">These motors have balance shafts for a reason, motor longevity will be affected.</TD></TR></TABLE>

No it won't! Balance shafts have absolutely nothing to do with actual the rotational assembly balance. The balance shafts are there to reduce secondary and higher order vibrations cause by the natural imbalance of an inline 4 cylinder engine. The reason why the bigger engines (ie: H22 and K24) have balance shafts is that above 2.0 liters the vibration becomes too much for the NVH engineers.

Removing the balance shafts will do nothing harful to the engine, if anything, it will increase engine longevity. Nissan's 2.5 liter in the Sentra has been having bearing problems with it's balance shaft setup and it is actually recommended to remove them to reduce the chances of this failure.

Note: balance shafts spin at twice engine rpm.
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Old May 10, 2004 | 04:18 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (mikestypes)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mikestypes &raquo;</TD></TR><TR><TD CLASS="quote">

No it won't! Balance shafts have absolutely nothing to do with actual the rotational assembly balance. The balance shafts are there to reduce secondary and higher order vibrations cause by the natural imbalance of an inline 4 cylinder engine. The reason why the bigger engines (ie: H22 and K24) have balance shafts is that above 2.0 liters the vibration becomes too much for the NVH engineers.

Removing the balance shafts will do nothing harful to the engine, if anything, it will increase engine longevity. Nissan's 2.5 liter in the Sentra has been having bearing problems with it's balance shaft setup and it is actually recommended to remove them to reduce the chances of this failure.

Note: balance shafts spin at twice engine rpm.</TD></TR></TABLE>


EXACTLY!!!

The second order vibrations of the rotating assembly go through the rod and crank bearings whether you have balance shafts or not. The only thing that might get an increased workout are the motor mounts. (and your butt)
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Old May 11, 2004 | 06:21 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (Gerhard_001)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Gerhard_001 &raquo;</TD></TR><TR><TD CLASS="quote">These motors have balance shafts for a reason, motor longevity will be affected.</TD></TR></TABLE>

haha, sucks to be proven wrong
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Old May 14, 2004 | 11:10 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (HotWheelz)

i took mine out just so i can use the rsx oil pump and oil pump...one thnigs for sure that dam shaft is heavy...and the crank is not balanced well..mine was very off i think it was 18 grams on one end or something not to sure..
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Old May 15, 2004 | 04:33 PM
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Default Re: Allready tested ? Removed balance shafts on the k24 (slowdelsol)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slowdelsol &raquo;</TD></TR><TR><TD CLASS="quote">...and the crank is not balanced well..mine was very off i think it was 18 grams on one end or something not to sure..</TD></TR></TABLE>

I don't think that's so out of sync with industry standards, but what kind of motor was this? H22? K20? K24?
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Old May 16, 2004 | 07:30 AM
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Default Re: Allready tested ? Removed balance shafts on the k24 (George Knighton)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by George Knighton &raquo;</TD></TR><TR><TD CLASS="quote">

I don't think that's so out of sync with industry standards, but what kind of motor was this? H22? K20? K24?</TD></TR></TABLE>

Its a K24.
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