GM harmonic balancer differences..., V8 topic Options

[neo914-6]

I borrowed Bill Pickering's Renegade HB and notice differences with my old Jaide sourced HB...

The shaft collar is taller on the Jaide. I thought these were "standard" GM 6 cyl HB's. (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif)

The Renegade HB (even with the spacer) will actually "work" without modification since I lost .25" with a Milodon timing gear drive. (IMG:http://www.914world.com/bbs2/html/emoticons/clap.gif) The whole issue is alignment with the alt and water pump pulleys.

Question 1, are the taller collared HB's still available and is any other converter using them? I know DH has a set of spacers behind the HB.

Question 2, What is the clearance between inner HB surface to engine block? Seems the Renegade is mounted pretty close to the block...

[Chris Julian]

Hey Felix,

So I recently went through this same problem on my 383 stroker motor. But I had additional complications because my motor is externally balanced due to the use of a 400 crank. That's another story. My motor is also mounted in a little different position then most, so clearence issues at the front pulleys may be different. I am running the standard (short collar) double grooved pulley which is available new from RS and RH and remanufactured/new from "Damper Dudes" in Northern CA. I have seen two types of spacers, stamped and machined (~.100" and .25" respectively).

I have also seen guys run a single groove pulley mounted on the front of a standard balancer. You'll need to have an electric pump if you eliminate the second groove/belt.

Whatever you do make sure you have the belts lined up properly. When I threw belts my motor would overheat in seconds without the waterpump spinning. A neat trick for alignment is to position a laser pointer in the groove of one pulley and to project the beam into the other pulley to confirm alignment.

Chris