Forums/Z31P/z31-performance-upgrade-forums engine-mechanical-aa/What harmonic balancers are available for the VG33?
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BLOZ UP: (2014-04-12 21:38:25)
It looks like I should have swapped to the damned VG30 crank. My Frontier harmonic balancer is about 5mm too big for my S30. Looking at RockAuto, I don't see much difference between models. They each have a 3 belt pulley (Quest, Xterra, Frontier, Pathfinder). However, on eBay I see a Frontier pulley that's way different, and that might work if I could turn the first pulley off:
http://www.ebay.com/itm/3-3L-Nissan-…fab256&vxp=mtr
Are there any aftermarket "underdrive" balancers for the Frontier/Pathfinder? I can't find any. Lame. Other option is raising the engine a bit by modifying my mounts, which would offset my perfect driveshaft angle by a couple degrees or so.
BLOZ UP: (2014-04-12 21:45:48)
Alternatively, who makes serpentine belt pulleys?
G-E: (2014-04-12 22:30:36)
One of my beefs with the unorthodox pulleys, I've never seen one with serpentine ribbed belts, just v-belt… which part is hitting what exactly?
BLOZ UP: (2014-04-12 22:46:24)
The diameter of the first two belt pulleys is hitting my steering rack. The diameter is just too large.
G-E: (2014-04-12 23:01:23)
What if you lathed off the lips between the belt sections? That might yield you a few mm?
Also What about removing the rack bushings, mounting it solid as low as you can?
NissanXRMA: (2014-04-13 00:59:41)
I believe eBay Z32 pulley's fit with a 11mm(?) spacer.
Blown-N-Boosted: (2014-04-13 01:07:46)
I got the ribbed for her pleasure.
[archived image: 006_zps7631c87b.jpg]
BLOZ UP: (2014-04-13 01:20:46)
I got the ribbed for her pleasure.
Is that a Z32 pulley? That looks real promising. Can you measure the OD of each pulley section?
michaelp: (2014-04-13 02:11:06)
Stock Z32 pulley diameter is the same as the Z31 VG (outside diameters), but the crank snout is larger. As mentioned prior, you just need a small spacer.
BLOZ UP: (2014-04-13 14:44:36)
Stock Z32 pulley diameter is the same as the Z31 VG (outside diameters), but the crank snout is larger. As mentioned prior, you just need a small spacer.
So, the ID of the balancer, where it fits on the crank snout, that's the same? I just need a 11mm thick disc behind the balancer? Or I need a cylindrical spacer? (seems unlikely, but just checking).
This is great news. I may have lucked out again.
michaelp: (2014-04-13 14:53:03)
So, the ID of the balancer, where it fits on the crank snout, that's the same? I just need a 11mm thick disc behind the balancer? Or I need a cylindrical spacer? (seems unlikely, but just checking).
This is great news. I may have lucked out again.
I've never actually run a Z32 balancer. I slipped one on once, then pulled it off. From what I understood though, you just need a spacer so the bolt tightens down, in front of the pulley, otherwise the bolt doesn't reach the balancer. Thats how it appeared when I slipped one on anyways. This route also allows appears as if it'd allow the use of Z31 accessories without issue.
jaqattack02: (2014-04-14 02:28:30)
I think it's mentioned in the VG33 thread that used to be stickied in this section.
amreboot: (2014-04-14 05:30:28)
I run a 2004 frontier VG33 in my z31. I have the VG33 crank and everything in use.
No issues with Alternator, WaterPump, or Power Steering.
The only thing I had to do is bring my A/C forward about 1.25" then it lined up perfectly.
BLOZ UP: (2014-04-14 13:50:39)
Here's a better shot of my problem:
It looks like I'm going to be switching back to the 3.0L water pump though, so the belts work with my alternator. Also, The driver side mount might need some modification to fit my remote oil filter lines.
BLOZ UP: (2014-04-15 16:28:44)
Measure the TT's pulley as well as I could while it was on the car. Looks legit. Ordered a relatively cheap OE pulley. Will see.
BLOZ UP: (2014-04-21 17:46:49)
So, yeah, it fits on the crank. Just need to see if it fits in the car. Can't tell about the bolt spacer until my Courtesy order comes in.
Seems to be missing timing marks. See one on the middle pulley edge, and 2-3 "dents" on the outer pulley but they are hard to see. Remind me to make my own.
BLOZ UP: (2014-04-22 13:29:30)
Close but no cigar:
Looks like I have to get an underdrive pulley. Lame. There's a slightly smaller ATI damper, but it's $600… is shortening the life of my bearings less than $600? I think so.
See original Z31 setup:
What would be cool with the Z32 pulleys, is that the VG33 water pump uses the middle pulley and the Z31 alternator uses the innermost, so I could use a smaller belt and not have my ghetto coolant pipe.
darryl rice: (2014-04-22 14:41:32)
Alternatively, who makes serpentine belt pulleys?
ATI makes a harmonic balancer for vg33/ z32. summit racing has them for $500. My block and internals are in machine shop for balancing. I'm not sure how well the belts line up. If they don't I was going to make it work
BLOZ UP: (2014-04-22 14:42:35)
Anyone have an OD of a VQ crank, or know if VQ{30/35/xx} pulleys fit? Saw something on the interweb that suggested they have the same OD as the VG33/VG30DE crank snout.
Otherwise, I need the OD and depth of one of those cheap underdrive pulleys.
BLOZ UP: (2014-04-22 15:00:16)
Looks like NA Z32 pulley might work. Dammit.
BLOZ UP: (2014-04-22 15:10:20)
ATI makes a harmonic balancer for vg33/ z32. summit racing has them for $500. My block and internals are in machine shop for balancing. I'm not sure how well the belts line up. If they don't I was going to make it work
Yeah, they have two options. One 6.3" for up to 1000HP, and one 5.5" for up to 600HP. The OD of my TT Z32 pulley is 7.125", it needs to be roughly 0.5" less on one side, so 1" less overall. So, it looks like the 5.5" ATI Damper would work, and it's what I will have to go to if I care about bearing longevity.