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Removing balance shafts
Posted: Sun Jan 15, 2006 5:43 am
by boosted
Has anyone got experience on it?
Is a elimination kit available, whats the way to do it?
Thanks in advance
Adil
Posted: Sun Jan 15, 2006 6:13 am
by isnowi
Have a read of this article, it explains things fairly well.
http://www.vfaq.com/mods/balance-shafts.html
this shows the elimantion kit install in a twincam motor, sohc is fairly much the same AKAIK.
Ididn't use a kit for mine, i simply cut the oil pump shaft, rotated the other shaft bearings in the caps to block off the oiling holes, and used a 22mm (if i remember correctly) brass frost plug in the void left by removing the shaft.
Makes the thing rev much more freely, and i now see about 30psi of oil pressure at 1000rpm when warm as opposed to 20-25psi before i removed them (stock oil pressure is 41psi at 2000rpm.)
Posted: Sun Jan 15, 2006 7:05 am
by mrb1
Be aware that the DOHC balance shaft eliminator kit will not work in the SOHC engine because the diameter of the oil pump balance shaft is bigger on the DOHC.
You can cut off your stock balance shaft and use that but you also have to block up the oil hole that goes down the middle.
Like isnowi said the "engine acceleration" is much better without the balance shafts.
You will feel more vibration typically around 3000 RPM however this seems to vary a bit between engines.
Posted: Sun Jan 15, 2006 10:53 pm
by boosted
Great seems fairly simple with a lot of benefits. At least they can't let go anymore
Cheers
Posted: Mon Jan 16, 2006 12:31 pm
by SOWTZ
Has anyone had a bad experience after removing it or is it all good news?
:beer
Posted: Mon Jan 16, 2006 2:29 pm
by Junkers
I've heard of some engines vibrating ridiculously even after being balanced.
Posted: Mon Jan 16, 2006 2:59 pm
by mrb1
Like I said all I noticed was a vibration typically around 3000 RPM through the gear stick.
Anyhow if you have a spare balance shaft it's a totally reversable change.