balancer horsepower capacity?

[linus2004]

is there a horsepower capacity of our stock balancers? at what point do i say i need to change it? thanks guys

[DSG2003Mach1]

ive never seen a particular number, the stock dampners failing seems to be as much an age thing as anything imho

[linus2004]

ok, whats the best replacement out there? is it worth going to an overdrive pulley as well for supercharger

[DSG2003Mach1]

overdriving it from the crank pulley definitely has less chance of belt slip. Ive seen at least 2 procharged motors with innovators west dampners have stock oil pump failures. If its related or not I dont really know, prochargers and IW seem to be the popular choices.

I believe ATI super dampner is also supposed to be good.

also, you can go ahead and get an 8rib version if you want to and still run a 6rib belt no problem, this way you dont have to replace it again later if you need it

[TKat13]

I went with the Innovators West, but as said before, ATI is good as well. I seriously doubt that the Balancer had anything to do with the stock oil pump taking a dive. I would say more over revving than anything else.

Not sure about HP limits of balancers, but I believe RPM limits is something to consider. I just picked the balancer that I believed to be best for dampening the harmonics of the motor and since I went with a stroker and plan high RPMs I did not want to risk several thousand dollars by saving a couple hundred bucks.

On thing I do like about the IW unit, when it comes time to rebuild your motor, just send in the IW unit to the mfg and for 85.00 they will rebuild it to new.

Here's mine, just put it on.:


Seems to be very well made.

[DSG2003Mach1]

Remember our motors are internally balanced, it's just a vibration dampner so it is possible the procharger is doing something it's not absorbing

[TKat13]

Originally Posted by DSG2003Mach1

Remember our motors are internally balanced, it's just a vibration dampner so it is possible the procharger is doing something it's not absorbing

True, but I have also seen the pump gear go with a stock harmonic balancer as well as an ATI. BTW, all had a pro charger. Personally, I would look at replacing the oil pump.

[DSG2003Mach1]

I wish I had done so while the motor was out

[mach1z]

Are you guys using balanced internals with these failures or just off the shelf balanced parts?

[lcaptmorg]

I know IW and ATI make good products and have never heard a bad thing about them. I have had a summit sfi damper on my motor for yeas with no issues. Not to say its of the same quality but I have personally not experience any problems and it seems to be a good piece. Professional products on the other had. I have not had any failures on a mod but two failures on pushrod motors.

[linus2004]

if i went with an overdrive balancer, does that affect other accessories and do you actually gain more boost? i just sent my p1 out to upgrage to a d1. i was making 13.5, procharger said id get to 18 with the same pulley. my engine is fully forged as well, im just thinking i should upgrade the balancer. i know this is off topic but approx how much horsepower is gained on +1 psi of boost?

[linus2004]

also, should i get a steel or aluminum balancer?

[SuperMach1]

Originally Posted by linus2004

if i went with an overdrive balancer, does that affect other accessories and do you actually gain more boost? i just sent my p1 out to upgrage to a d1. i was making 13.5, procharger said id get to 18 with the same pulley. my engine is fully forged as well, im just thinking i should upgrade the balancer. i know this is off topic but approx how much horsepower is gained on +1 psi of boost?

How much did they charge to upgrade? If you don't mind me asking.

[tmhutch]

Mihovetz, holder of more mod engine records than anyone on the planet has a very low opinion of the Innovators West damper after several engine failures directly related to it and the oil pump. He prefers the ATI which is far and away the best unit money can buy. It cost the same as the IW damper, sometime it can be found for less.

[linus2004]

1500

[littlemags]

Originally Posted by tmhutch

Mihovetz, holder of more mod engine records than anyone on the planet has a very low opinion of the Innovators West damper after several engine failures directly related to it and the oil pump. He prefers the ATI which is far and away the best unit money can buy. It cost the same as the IW damper, sometime it can be found for less.

I had a IW dampner and actually changed to an ATI because of my procharger.

[mach1z]

Originally Posted by tmhutch

Mihovetz, holder of more mod engine records than anyone on the planet has a very low opinion of the Innovators West damper after several engine failures directly related to it and the oil pump. He prefers the ATI which is far and away the best unit money can buy. It cost the same as the IW damper, sometime it can be found for less.

I can see that. The ATI has a "soft" core that could absorb "vibrations". The IW is a solid piece that has no way to absorb any. Once the internal balancing fails, the damper kicks in right?

[Roy]

I like ATI Super Damper best. I wouldn't us IW.

[SchwermoRacing]

If I remember IW makes the dampeners Ford uses on the GT500. I used a MARCH with no problem for 7 years.

[DSG2003Mach1]

Originally Posted by Roy

I like ATI Super Damper best. I wouldn't us IW.

can you elaborate?

I went with the IW piece when my stocker separated on the dyno, thats what the tuner told me to get and I just went with it.

[Roy]

I’ve used and seen hundreds of super dampers use in every extreme drag engine imaginable without fail. I don’t know anyone that’s used the IW damper. It appears to be all aluminum and bolted to a steel hub. I don’t think it would absorb harmonics near as good as this:

http://www.atiracing.com/products/dampers/101/index.htm

[blown03Mach1]

I believe the IW uses an oil substance internal to the pulley to absorb vibes.

[DSG2003Mach1]

Originally Posted by blown03Mach1

I believe the IW uses an oil substance internal to the pulley to absorb vibes.

looked at the website because I wasnt sure myself and snagged this:

"free floating wet friction clutch pack assembly that utilizes spring loaded inertia rings to dampen crankshaft harmonics over a wide RPM range. The rings work in conjunction with clutches to provide outstanding dampening action. That action does generate some heat, and we use a small amount of fluid inside that acts as a lubricant as well as dissipates heat to the outer body."

[tmhutch]

I know Ford uses ATI on their race cars but I've never heard of them using IW for the GT500.

The damper is not used for balancing on our engines because they are internally balanced. The sole purpose is preventing the crank from twisting in half and mitigating harmonics caused by the crank flexing/twisting each time combustion occurs in a cylinder.

The combustion exerts over 1000 PSI against the piston/rod/crank arm. All this force twists the crank, especially at the end farthest from the clutch. Harmonics occur when the crank snaps back and forth after the initial shock.