Neutral Balance Shafts

10

ZZ-NTRLBS-2 $269.99
Regular price $269.99

For a good explanation of the function of balance shafts, read our tech article here: Engine Balance and the Balance Shafts

The best solution for building a performance motor would be to remove the balance shafts entirely. However this requires changing to an electric water pump and plugging rear oiling holes. For most people, swapping to neutral shafts is a lot easier solution.

These shafts help you in 3 ways.

  • Less vibration. As the tech article explains, the factory balance shafts cause a cancellation vibration that works against you at higher rpms. These neutral shafts eliminate the HP loss incurred from creating this vibration. They keep your engine safe at high rpm.
  • Less weight. As pictured below the ZZP shafts are lighter than stock. Lighter rotating parts perform better in every way.
  • Less rotating mass. Balance shafts spin at twice engine speed. HP required to spin an object rises exponentially with speed. Balance shafts on built engines can spin in excess of 16,000 rpm!

So how much HP is saved?

This is a difficult question to answer because the truth is that it depends on a variety of factors. With any neutral shaft HP is gained at higher rpm because you are not creating a counter vibration for the car. The higher the rpm, the more HP is saved and it rises exponentially.

With the ZZP shafts, HP is saved because you are not spinning as much weight. The faster you spin your engine, the more HP is saved. With our competitor’s shafts HP is lost here.

If you look at kinetic energy formulas, you get an idea of how engine speed plays a roll.

KE = 1/2 (M * (V * V))

Let’s say it takes 1/2 HP to accelerate the shafts to 2k engine rpm. It would then take 2 HP to accelerate them to 4k rpm in the same amount of time or 8 HP to spin to 8k. Every time you double the speed, it requires 4 times the horsepower to accelerate in the same amount of time. Considering these shafts are spinning twice engine speed, you can see why it’s so critical to run a light shaft.

Compare the ZZP neutral balance shaft to our competitors. Their shafts weigh 2.5 times what the ZZP shafts weigh! This is actually more than the factory shafts weigh, costing you valuable HP. 

So how much weight is saved?

The ZZP shafts are 2.56 lbs lighter than the factory LE5, LNF, and LDK balance shafts.

Fits the 2.0, 2.2, and 2.4 liter engines.

For a good explanation of the function of balance shafts, read our tech article here: Engine Balance and the Balance Shafts

The best solution for building a performance motor would be to remove the balance shafts entirely. However this requires changing to an electric water pump and plugging rear oiling holes. For most people, swapping to neutral shafts is a lot easier solution.

These shafts help you in 3 ways.

  • Less vibration. As the tech article explains, the factory balance shafts cause a cancellation vibration that works against you at higher rpms. These neutral shafts eliminate the HP loss incurred from creating this vibration. They keep your engine safe at high rpm.
  • Less weight. As pictured below the ZZP shafts are lighter than stock. Lighter rotating parts perform better in every way.
  • Less rotating mass. Balance shafts spin at twice engine speed. HP required to spin an object rises exponentially with speed. Balance shafts on built engines can spin in excess of 16,000 rpm!

So how much HP is saved?

This is a difficult question to answer because the truth is that it depends on a variety of factors. With any neutral shaft HP is gained at higher rpm because you are not creating a counter vibration for the car. The higher the rpm, the more HP is saved and it rises exponentially.

With the ZZP shafts, HP is saved because you are not spinning as much weight. The faster you spin your engine, the more HP is saved. With our competitor’s shafts HP is lost here.

If you look at kinetic energy formulas, you get an idea of how engine speed plays a roll.

KE = 1/2 (M * (V * V))

Let’s say it takes 1/2 HP to accelerate the shafts to 2k engine rpm. It would then take 2 HP to accelerate them to 4k rpm in the same amount of time or 8 HP to spin to 8k. Every time you double the speed, it requires 4 times the horsepower to accelerate in the same amount of time. Considering these shafts are spinning twice engine speed, you can see why it’s so critical to run a light shaft.

Compare the ZZP neutral balance shaft to our competitors. Their shafts weigh 2.5 times what the ZZP shafts weigh! This is actually more than the factory shafts weigh, costing you valuable HP. 

So how much weight is saved?

The ZZP shafts are 2.56 lbs lighter than the factory LE5, LNF, and LDK balance shafts.

Fits the 2.0, 2.2, and 2.4 liter engines.

You are viewing a product listed on the following platforms:

Ecotec
Slingshot

Customer Reviews

4.8 Based on 10 reviews
5 ★
80% 
8
4 ★
20% 
2
3 ★
0% 
0
2 ★
0% 
0
1 ★
0% 
0
Write a Review
  • Reviews

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

DJ
09/22/2017
Daniel J.

Great quality

No complaints, great product, fast shippers and arrived on time in a well packaged box. I have ordered multiple parts from them now and I haven't had any complaints, I will soon be ordering a heat exchanger! Thanks guys

DJ
09/22/2017
Daniel J.

Great quality

No complaints, great product, fast shippers and arrived on time in a well packaged box. I have ordered multiple parts from them now and I haven't had any complaints, I will soon be ordering a heat exchanger! Thanks guys

MS
06/28/2017
Mark S.

Easy install

The balance shafts installed really easily and the only way to improve them would be to make them a little lighter.

MS
06/28/2017
Mark S.

Easy install

The balance shafts installed really easily and the only way to improve them would be to make them a little lighter.

SC
05/10/2017
Seth C.

These shafts were easy to

These shafts were easy to in stall and revs quicker.