I'm not familiar with this pulley; does it have a core collar that gets bolted to the crank and then the pulley bolts to the collar? Or did the pulley itself sheer off of its own collar? If the later - yikes! That's manufacture defect for sure and I'd stay away from them for sure.
In regards to timing, there is one 'notch' on the outer sprocket (which is the oil pump chain's sprocket) that has a different formation than the rest. The harmonic balancer MUST line up to this. If you don't line it up and bolt it down, you WILL damage the face of those splines and WILL be off on timing. It's kind dummy proof in a way. There's no need to know TDC as this different notch in the spline formation is the determining factor. Let me know if you want a pic on this.
In regards to harmonic balancers / pulleys (I posted in this in 2 other pulley related threads); as an engine builder, unless you are balancing/building the motor WITH that pulley (which isn't a harmonic balancer any more <-- critical factor), do NOT run it. It will change the harmonics of the rotating assembly and you may run into accelerated bearing/ring wear than normal. I don't care how long in time nor how many miles a manufacture states they test their product. Bottom line is, on a mass produced product there is going to be a variance in tolerances; nature of the fact. Since that is the case, that is why each engine (speaking general to any car manufacture) has tolerances it must be within from 'spec'. Imagine you getting the 'lucky' motor, that has just the right (or really incorrect tolerances) measurements (but within spec) and remove the harmonic balancer. It's a recipe for issues. It's not like we are dealing with a hand made Bentley / Ferrari motor here boys! If you 'want' to do "something" to the balance, buy a fluidamper one. Read up, do your research and you'll see why I've shared what I have shared.
Reply With Quote
Originally Posted by JeriQo
Bookmarks