Balance shafts removal.

T-man · Post by **T-man** » Mon Sep 24, 2012 4:49 am

Hi all just a quick question, am doing a twin cam convertion and starting to put the engine back together and thought about taken out both balance shafts using a balance shaft eliminator kit. My question is how much vibration will I feel if any? Is it noticeable? Does the pros out weigh the cons?

Thanks in advance,
T-man. [/list]

OLD FART · Post by **OLD FART** » Mon Sep 24, 2012 5:35 am

Make sure you block off the oil feed to the BS.
Have you had ALL the rotating assembly balanced???

T-man · Post by **T-man** » Mon Sep 24, 2012 6:53 pm

^^^^^ no, how essential is it that I get the bottom end balanced? The car will be used and abused she's not going to be a track star.

Cheers,
T-man

OLD FART · Post by **OLD FART** » Tue Sep 25, 2012 5:10 am

T-man wrote:^^^^^ no, how essential is it that I get the bottom end balanced? The car will be used and abused she's not going to be a track star.

Cheers,
T-man

I would think that a balanced RA would have less vibration.
My motto "do it once and do it right"

redzone · Post by **redzone** » Tue Sep 25, 2012 7:58 am

It feels terrible on a street car, track car you probably wouldn't give a shit, but you won't gain any extra power by removing them, the only effect it has is like lightening a flywheel. You only really need to remove them if your are planning on exceeding 8k

T-man · Post by **T-man** » Tue Sep 25, 2012 7:14 pm

Thanks guy for all the responces! Hey redzone long time no hear, don't worry I haven't forgot about you or the parts requested. I'm starting to screw the engine back together now. Ok if I keep the engine balance shafts I won't need to balance the bottom end, but if I remove them then I will need to balance the bottom end. Also there is no performance gain if I remove the shafts only if I go to 8k rpm?

T-man.

fugazi · Post by **fugazi** » Tue Sep 25, 2012 8:09 pm

OLD FART wrote:"do it once and do it right"

Balance it! :beer

OLD FART · Post by **OLD FART** » Wed Sep 26, 2012 6:01 am

Remember the shafts spin at twice the crank speed

Post by **Alspos** » Wed Sep 26, 2012 12:00 pm

Balance shafts are there to dampen the harmonics created by a 4 cylinder engine, they are not there to balance the rotating assembly of the engine. Please don't confuse these points.

If you are going to rev it to 8k then I would suggest the engine be balanced properly with or without balance shafts.

T-man · Post by **T-man** » Thu Sep 27, 2012 5:30 am

Ok ok, here's my new plan. Remove the balance shafts and get the bottom end balanced!

Cheers,
T-man.

OLD FART · Post by **OLD FART** » Thu Sep 27, 2012 12:33 pm

T-man wrote:Ok ok, here's my new plan. Remove the balance shafts and get the bottom end balanced!

Cheers,
T-man.

:beer :beer Now don't forget to balance EVERYTHING that goes up,down or round & round in the bottom end including what's bolted to both ends of the crank .

Austarion

Balance shafts removal.

Balance shafts removal.

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