JoeK Posted January 22, 2016 Share Posted January 22, 2016 I'm trying to emulate the Z32 swap that GSXTCY was offering, but seems to have moved on. The rotors are from an '07 Honda Oddysey and need the center bore enlarged and the mounting pattern redrilled. I've called about 20 machine shops, from automotive machine shops to custom CNC fabrication shops. The automotive machine shops say they aren't set up for this kind of thing, and the fabrication shops say they won't work on auto parts, they don't want the liability. Any suggestions of where to turn next? Quote Link to comment Share on other sites More sharing options...
seattlejester Posted January 23, 2016 Share Posted January 23, 2016 Sounds like you need a place the deals with rotors. I would suggest an off road shop. They tend to have much bigger machinery on hand and redrill rotors all the time. I think synergy manufacturing does such work, at least based on videos, not sure if it is an actual service. Quote Link to comment Share on other sites More sharing options...
JoeK Posted January 28, 2016 Author Share Posted January 28, 2016 Still haven't found anybody who will touch this yet. But I suppose this would be an option, at least for the lug pattern. http://www.rottenleonard.com/Menu.html Quote Link to comment Share on other sites More sharing options...
Pillar Posted February 2, 2016 Share Posted February 2, 2016 Have you tried a local rim/wheel repair shop? I know you said you have tried automotive machine shops, but I mean a place that specializes in only rims/wheels. I have seen a few shops around here (East Coast) that repair rims including re-drilling center bores and lug patterns. I would think if they can do it on a rim, they might be able to do a rotor as well since the concept is basically the same. Quote Link to comment Share on other sites More sharing options...
LLave Posted February 2, 2016 Share Posted February 2, 2016 I am somewhat interested in this swap as well. Are you having brackets made, or are they still available somewhere? I may have a local resource to machine the rotors in small quantity. Quote Link to comment Share on other sites More sharing options...
JoeK Posted February 3, 2016 Author Share Posted February 3, 2016 (edited) Pillar, that's a good idea. I'll check it out.Llave, I was going to make my own caliper brackets but Arif has gotten a hold of some and is looking into having more made. Look here: http://forums.hybridz.org/topic/124495-brackets-for-z32-brakes-on-a-s30/Also, I had contacted RHDJapan about sourcing these in Japan and this is what they drummed up. http://www.rhdjapan.com/rubber-soul-r32-type-m-caliper-fitment-kit-s30-fairlady.html I thought it a little on the expensive side but it's always worth what someone is willing to pay right. Edited February 3, 2016 by JoeK Quote Link to comment Share on other sites More sharing options...
nismo silvia Posted May 6, 2016 Share Posted May 6, 2016 If you are still trying to boar the center you may just find a place that surfaces rotors, the machine is capable of cutting the boar you will just have to find a place that will let you use it or find a lathe and it will take you 10 min to do Quote Link to comment Share on other sites More sharing options...
JoeK Posted May 6, 2016 Author Share Posted May 6, 2016 I ended up finding a local garage machinist to do it for me. Though he didn't end up getting it centered and it is out by .090. See post #5 here http://forums.hybridz.org/topic/39437-how-much-radial-rotor-runout-is-acceptable/?hl=%2Bradial+%2Brunout I'm going to run it and see if it causes havoc, unless someone tells me otherwise... Quote Link to comment Share on other sites More sharing options...
Derek Posted May 7, 2016 Share Posted May 7, 2016 .090" of runout sounds like a lot to me. I would proceed with caution. Quote Link to comment Share on other sites More sharing options...
LLave Posted May 7, 2016 Share Posted May 7, 2016 Any chance he can chuck up the rotors by the new inner pilot and true-up the OD? Seems like he wouldn't have to take too terribly much off. Maybe it is a non-issue though. Quote Link to comment Share on other sites More sharing options...
JoeK Posted May 7, 2016 Author Share Posted May 7, 2016 Well, he also had to drill a new bolt pattern. That is also off by the same amount. So he'd have to elongate the holes, which I don't like the idea of at all. the rotors clear the calipers, so it seems to me the worst that will happen is it'll feel out of balance, like an unbalanced tire. Quote Link to comment Share on other sites More sharing options...
ArizonaZ Posted May 7, 2016 Share Posted May 7, 2016 I ended up finding a local garage machinist to do it for me. Though he didn't end up getting it centered and it is out by .090. See post #5 here http://forums.hybridz.org/topic/39437-how-much-radial-rotor-runout-is-acceptable/?hl=%2Bradial+%2Brunout I'm going to run it and see if it causes havoc, unless someone tells me otherwise... .090 is a crazy amount to be off! Machinists are used to working with tolerances +-.002 normally and should be able to get that concentric down to those levels. I would not return to that "machinist", and I don't think it would be a very good idea to run those rotors the way they are. I would keep searching for a place that will be able to get it within +-.005 everytime. Quote Link to comment Share on other sites More sharing options...
240zdan Posted May 11, 2016 Share Posted May 11, 2016 (edited) Anyone with a lathe and drill press can do it. I did mine in 10 mins. The machinist screwed up, Im sorry to say it but you're rotors are junk. Turning the OD may create balance issues or may cause your rotor to snag on the caliper. Dont run them! I have a set of caliper brackets I had lasercut but they are for GTR rotors. If you can source those then the brackets I have will work. Edited May 11, 2016 by 240zdan Quote Link to comment Share on other sites More sharing options...
74_5.0L_Z Posted May 11, 2016 Share Posted May 11, 2016 Get another set of rotors and start over. Honda Oddysey cannot be that expensive. Hopefully you didn't pay much to the hack that screwed up the last set. This should be an easy job for any decent machinist. I am spoiled though. I live down the street from a very skilled Tool and Die maker. I provide him a drawing of what I want and he gets it right every time. Quote Link to comment Share on other sites More sharing options...
JoeK Posted May 11, 2016 Author Share Posted May 11, 2016 The rotors are cheap, I think they were $120 per pair including shipping from Rockauto. I don't want to talk about how much I paid the machinist, but I guess if I piad more than $1 it was too much. I have a drill press, but lack a metal lathe. I've still been unable to find a machinst in the Bay Area that will do this for me, which seems ridiculous. If anybody knows a machinst who will do this for me, I'd drop ship the parts directly to them. I can also email a pdf of the layout, it's pretty simple. Quote Link to comment Share on other sites More sharing options...
LLave Posted May 11, 2016 Share Posted May 11, 2016 JoeK, I have a couple of options for local shops. I will PM you. -Mike Quote Link to comment Share on other sites More sharing options...
BoonZ Posted May 12, 2016 Share Posted May 12, 2016 I think most machine shops do not want to deal with a job, with out a detailed drawing. The machinist hand book gives specifications for types of fits. For a rotor ID to fit a hub OD of 2.500" It may be called out Machine ID to 2.501" -.000 +.001" Concentric to OD within .005" If the OD is rough a clean up cut may be needed. Bolt circle call out will be Four .xxx" + -.005" holes on 4.500" circle 90 degree spacing Concentric to ID. This job can be done on a Mill/Jig bore with a boring head or a CNC turning center with live tooling as well as a Lathe and Mill. Quote Link to comment Share on other sites More sharing options...
240zdan Posted May 12, 2016 Share Posted May 12, 2016 The bore definetley needs to be turned on the lathe, but the drilling can be done on a drill press. Since the bore locates the hub to the rotor the drilled holes dont need to be extremeley precise, .005 is pretty easy to hold on a drill press though. This is simple stuff, you should not be having as much issues as youre having with getting the job done. Like I said, I did mine in about 30 mins tops. Quote Link to comment Share on other sites More sharing options...
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