BLOZ UP Posted June 1, 2014 Share Posted June 1, 2014 (edited) I need a spacer for my VG33 crank and Z32 pulley combo. I will be using eMachineShop to make it. Now, if I just make one it's $80. If I make 5 it's around $100. Anyone else interested in buying one so I can recoup some cost? They would be about $20 shipped assuming I get 5. More if less, less if more, but you save a lot more than getting one machined yourself (from this place, anyway). More if you wait until after the buy. I will be making this order this week regardless of how many people hop on board, so no lollygagging. This is needed for anyone running or planning on running a VG33 crank with a Z32 (OE or aftermarket) harmonic balancer/crank pulley. Here are my drawings so far. I've never designed anything via CAD, but this wasn't exactly a Saturn V rocket: It's 11mm thick, 52.5mm OD, 32.1 ID, and a roughly 5.2x2.8mm keyway. It will be machined out of 304 Stainless for durability. Edited June 1, 2014 by BLOZ UP Quote Link to comment Share on other sites More sharing options...
Xnke Posted June 1, 2014 Share Posted June 1, 2014 If you need it to space the crank damper off the front of the crank, make it from steel. Aluminum will embed and you'll loose the torque on the snout bolt, and the damper will likely come off. Hardened steel would be safer still, but you could probably get away with unhardened or prehardened-machinable. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 1, 2014 Author Share Posted June 1, 2014 Good point. Updated. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 1, 2014 Author Share Posted June 1, 2014 If you need it to space the crank damper off the front of the crank, make it from steel. Aluminum will embed and you'll loose the torque on the snout bolt, and the damper will likely come off. Hardened steel would be safer still, but you could probably get away with unhardened or prehardened-machinable. Judging from the options I had with the CAD software, 304 wasn't much softer than 4130 (which looked to be the hardest they offered). It's also 10x less expensive. Also, is the crank bolt supposed to compress the pulley and timing gear against the step in the crank? Or are they supposed to be 'flush' and take up roughly half the torque of the bolt? Quote Link to comment Share on other sites More sharing options...
Xnke Posted June 2, 2014 Share Posted June 2, 2014 They should take the full compression. The bolt should not torque up against the crank snout, the pulley should hold it off a 0.020" or so. Quote Link to comment Share on other sites More sharing options...
Six_Shooter Posted June 2, 2014 Share Posted June 2, 2014 So what's the advantage of using this crank pulley/damper/engine combo? Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 2, 2014 Author Share Posted June 2, 2014 (edited) So what's the advantage of using this crank pulley/damper/engine combo? Allows use of OE or aftermarket Z32 underdrive dampers on the VG33. For me specifically, the VG33 (and OE Z32 pulleys for that matter) were too large in diameter, hitting my steering rack. Edited June 2, 2014 by BLOZ UP Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 13, 2014 Author Share Posted June 13, 2014 I've ordered 5, said it would take 8 days to make. Have no idea if the tolerances were right. Upping the tolerances made it $100 each instead of $20 each. Probably going to require some final machining. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 23, 2014 Author Share Posted June 23, 2014 (edited) I've received them. Look alright. They ended up being 13.1mm thick instead of 11mm (within 20% 'economy' thickness tolerance), so they will need to be turned down on a lathe. Also the OD is tapered, but this isn't a big deal. The ID is tight and requires some sanding on some of them, but a couple fit fine. The flat edge is flat, however, so they are not bad. I have four extras. If you want one, $25 shipped. This goes to recoup some of the costs associated with machining them. I take BTC/LTC/DOGE or Paypal. First come, first served. PM me for details. Edited June 23, 2014 by BLOZ UP Quote Link to comment Share on other sites More sharing options...
G-E Posted June 25, 2014 Share Posted June 25, 2014 The best material would be 4140HT... still machinable, easily hardened more, but damn that tolerance error sucks Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 25, 2014 Author Share Posted June 25, 2014 4130/4140 was considerably more expensive for not much more hardness. The timing gear and harmonic balancer aren't that hard. Quote Link to comment Share on other sites More sharing options...
BLOZ UP Posted June 25, 2014 Author Share Posted June 25, 2014 I'm having them all machined down to 11mm, this will raise the price. Quote Link to comment Share on other sites More sharing options...
260DET Posted June 27, 2014 Share Posted June 27, 2014 Do it properly and put a TT crank and oil pump in it, like I did. To handle all that huge power you make Quote Link to comment Share on other sites More sharing options...
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