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Harmonic Ballancer For Rb30det (gtr Or Rb20)?

sky30

By sky30,
in Engines & Forced Induction

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sky30 Mentor

sky30

Posted
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Has anyone got any idea if a RB26 harmonic ballancer is better suited to use on my RB30det compared to using a RB20det ballancer.??

THe RB26 ballancer is a bit bigger and has more weight to it when comparing to the RB20 one.

What are peoples thoughts??

Adriano Grand Master

Adriano

Posted
Posted

I would recommend a good aftermarket (ATI) rb26 balancer if you want the thing to have a chance of staying together at those revs, the heavier dampner will do a better job of getting rid of harmonics fromm teh crank which is one of the suspected causes of oil pump failure.

STATUS Grand Master

STATUS

Posted
Posted
I would recommend a good aftermarket (ATI) rb26 balancer if you want the thing to have a chance of staying together at those revs, the heavier dampner will do a better job of getting rid of harmonics fromm teh crank which is one of the suspected causes of oil pump failure.

yah funny you should say this, i was speaking to the some jap guys on tuesday and i mentioned that i was looking for a rb25 balancer to run on cats car to allow me to run r34 r33 gtst pwr steer pump (more crank to rad clearance) but they advised me against it as it is known to increase engine harmonics and oil pump failures.... its seems to be quite a normal swap here.

r33_racer Grand Master

r33_racer

Posted
Posted

ill weigh them when i get home, but i dont think there is much weight difference as such between the ati and a std rb damper.

I think its their internal construction with their rubber rings and whatnot that absorbs more vibration and over a larger spread of frequency and converts that to heat more efficiently then a std one. I think they can make them to suit your motor specifically if they had one to test. I believe they say they can tune them (harmonic/frequency wise) to suit your motor and rev range.

sky30 Mentor

sky30

Posted
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Posted
ill weigh them when i get home, but i dont think there is much weight difference as such between the ati and a std rb damper.

I think its their internal construction with their rubber rings and whatnot that absorbs more vibration and over a larger spread of frequency and converts that to heat more efficiently then a std one. I think they can make them to suit your motor specifically if they had one to test. I believe they say they can tune them (harmonic/frequency wise) to suit your motor and rev range.

Michael, Im interested to know the weight of the Ati balancer compared to stock if you can weigh it, id be great.

r33_racer Grand Master

r33_racer

Posted
Posted

didnt have time to do it this arvo sorry. Tomorrow after work ill be going to parents house to work on race car. so ill weigh it then and report back. Of snap, i think our machinest has it for balancing with the rest of the bottom end. Dammit, forgot about that. Might be a while before i get it back too. My bad peoples.

STATUS Grand Master

STATUS

Posted
Posted
Michael, Im interested to know the weight of the Ati balancer compared to stock if you can weigh it, id be great.

Saw a nice RB26 POWERBOND balancer thursday at a trade show, 25% underdriven and 4.118kg. They list both differrent RB26 balancers, one for 1991-93 and 1993-on.

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