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MJ RACE Harmonic Balancers / Crank Pulley Dampers

For Circuit & Drag Racing


These are made for racing purposes, and are usually custom designed for top end race engine builders, off the shelf this Harmonic balancer will not always run std pulley belt location.

MJRace balancers/dampers are made from the highest grades of materials that don’t break.

For Naturally aspirated and turbo engines the crank hubs are made from 7075 aerospace alloy.

But in the case of supercharged engines 4340 alloy steel is used for the crank hubs.

The accessory drive pulley ratios are mostly between 10% and 25% underdrive.

This prevents engine overheating , alternator and power steering failures due to overspeed.

These harmonic balancers / crank pulley dampers are made to suit ANDRA requirements and meets sfi rules If your engine regularly sees RPM between 10% and 20% more than standard and you are racing on the track doing multi lap events, using fuel cuts and rev limiters in the programming of your engine, as well as rapid accelleration and decelleration then you will need a race series balancer / damper.

If you are running RB Nissan the balancer / damper has no provision for A/C belt The accessory drive pulleys are mostly underdriven and in some models up to 20%. (Consult catalogue).

Race Series Harmonic Balancers / Crank Pulley Dampers are bonded balancers created for circuit and drag racing applications. Much of the range is instock while customised Harmonic Balancers / Crank Pulley Dampers can also be manufactured to suit individual needs and specifications. The race series may not suit original OEM pulley setups.




Manufacturer ROSS Part No: Description Image Representation Only
Chevrolet 118500 MJ RACE HARMONIC BALANCER - SMALL BLOCK CHEV 283-350 TO SUIT BLOWER PULLEY ROLLOVER TO VIEW
 
HOLDEN 116530 MJ RACE HARMONIC BALANCER - V6 VR Race  
HOLDEN 116540 MJ RACE HARMONIC BALANCER - V6 Ecotec Race  
HOLDEN 116542 MJ RACE HARMONIC BALANCER - All 6 Cyclinders RED, BLUE ROLLOVER TO VIEW
HOLDEN 116543 MJ RACE HARMONIC BALANCER - GREY Motor ROLLOVER TO VIEW

* Denotes customer own balancer rebuilding service available for these part numbers. Item not carried in stock and a surcharge of 30% applies.
Part TYPE ROSS Part No: Description Image Representation Only
NISSAN 304500 MJ RACE HARMONIC BALANCER - CA18 ROLLOVER TO VIEW
NISSAN 304501 MJ RACE HARMONIC BALANCER - sr20 alt - w/p only ROLLOVER TO VIEW
NISSAN 304510 MJ RACE HARMONIC BALANCER - FJ20 ROLLOVER TO VIEW
NISSAN 306500 MJ RACE HARMONIC BALANCER - ALL "L" SERIES SINGLE VEE  
NISSAN 306510 MJ RACE HARMONIC BALANCER - RB26-R32 10%u/drive w/p No A/C 20%u/drive p/steer ROLLOVER TO VIEW
NISSAN 306511 MJ RACE HARMONIC BALANCER - RB26-R33 10%u/drive w/p No A/C 20%u/drive p/steer ROLLOVER TO VIEW
NISSAN 306511 MJ RACE HARMONIC BALANCER - RB26-R34 10%u/drive w/p No A/C 20%u/drive p/steer ROLLOVER TO VIEW
NISSAN 306512 MJ RACE HARMONIC BALANCER - RB30 10%u/d w/p no a/c no p/steer ROLLOVER TO VIEW

* Denotes customer own balancer rebuilding service available for these part numbers. Item not carried in stock and a surcharge of 30% applies.
Manufacturer ROSS Part No: Description Image Representation Only
TOYOTA 804500 MJ RACE HARMONIC BALANCER - 3SGE 2.2l  
TOYOTA 804501 MJ RACE HARMONIC BALANCER - 4AG/4AFE/7AFE ROLLOVER TO VIEW
TOYOTA 806501 MJ RACE HARMONIC BALANCER - Lexus 4.2 v8  
 

* Denotes customer own balancer rebuilding service available for these part numbers. Item not carried in stock and a surcharge of 30% applies.
Part TYPE ROSS Part No: Description Image Representation Only
SUPERCHARGER B 998550 Universal Balancer to suit most crank hubs - 8" diameter  
SUPERCHARGER B 998551 Universal Balancer fits inside blower pulley - 4" diameter  
SUPERCHARGER B 998552 Chev - large snout 327-350 suit 2" brg/seal 7" diameter  
SUPERCHARGER B 998553 Holden V6 - V6 VR Blower  
SUPERCHARGER B 998554 Holden V6 - V6 Ecotech Blower  
SUPERCHARGER C 118555 SMALL BLOCK CHEV STD BORE  
SUPERCHARGER C 118556 SMALL BLOCK CHEV 1.6" BORE  
 

* Denotes customer own balancer rebuilding service available for these part numbers. Item not carried in stock and a surcharge of 30% applies.
Manufacturer ROSS Part No: Description Image Representation Only
NISSAN 304150 ROSS TUFFBOND Dry Sump Drive - TO suit sr20 race balancer - no a/c / NO p/steer ROLLOVER TO VIEW
NISSAN 304510 ROSS TUFFBOND Dry Sump Drive - TO suit MJ race balancer ROLLOVER TO VIEW
NISSAN 306152 ROSS TUFFBOND Dry Sump Drive - to suit NISSAN RB30 MJ race balancer  
NISSAN 306154 ROSS TUFFBOND Dry Sump Drive - suitS RB25/26 race balancer - no a/c / NO p/steer ROLLOVER TO VIEW
SUBARU 704150 ROSS TUFFBOND Dry Sump Drive - TO SUIT SUBARU EJ20-25 MJ race balancer  

* Denotes customer own balancer rebuilding service available for these part numbers. Item not carried in stock and a surcharge of 30% applies.

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