Subject	60mm ThrottleBody Modification just got a little easier. >>>
Posted by	Ash's Z on May 09, 2006 at 9:41 PM
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Message	During some extensive spring cleaning around here, I stumbled across a few items of interest and put them up on the workbench as reminders of some new ideas. One item of interest is the Stanza 60mm throttlebody - this was an extra unit I picked up in the junkyard last year when I began the 60mm throttlebody mod for my personal Z... Been looking into seeing what would be necessary to make some casting molds to produce new housings and have them machined to my specs. One thing that makes this mod so difficult and time-extensive is the modification of the plenum to re-arrange the bolt location of the two lower holes of the plenum. The second being the modification to the throttle shaft itself, but a far second in terms of fab-work. I got to comparing the bolt patterns between the 60mm units and stock, and for kicks, I broke out the mill and cut the holes into ovals. I was able to rather easily achieve the proper bolt seperation to allow it to bolt to the plenum. One of the small caveats to the previous method of the 60mm TB installation is that you use the OEM upper bolt holes in the plenum as well as in the TB. By doing this, it places the location of the throttle shaft lower by about 5mm or so, which requires modification to the linkage bracket in the center of the plenum - namely ovaling out the holes. By re-cutting the TB holes to allow it to fit the OEM bolt pattern, it will not lower the throttleshaft, and require no modification of the linkage bracket. The only work that will be required is to open the port in the front of the plenum, but that only requires relatively simple tools to do, and no welder is required. Someone with a carbide die grinder and the appropriate tool could oval out the TB holes to achieve the same thing. Although this simplifies one of the most complicated aspects of the modification, it is still an involved project regardless... something that I am looking further into as well... [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	60mm ThrottleBody Modification just got a little easier. >>> - Ash's Z 21:41:54 05/09/06 Wow..awesome find! (n/m) - CollegeBoy 21:45:47 05/09/06 nice (n/m) - aliaZ 21:53:56 05/09/06 I was wondering about that - good to know! Thanks - Medici 21:57:58 05/09/06 cool :) (n/m) - Guapo 21:58:36 05/09/06 Uh, that is helpful. I'll have to look into that... - whitepearlz 22:32:43 05/09/06 Re: 60mm ThrottleBody Modification just got a little easier. >>> - StanZ 22:38:47 05/09/06 not enough to make it worth it,unless your doing a big build (n/m) - 300zib(NoVA) 23:01:55 05/09/06 Wasn't there a post showing that unless you were - Broke_as_**** 01:57:22 05/10/06 nice (n/m) - Spee 23:53:13 05/09/06 Very nice (n/m) - SeedyROM 01:31:06 05/10/06 Did this TB come from a Stanza with or without cruise cont? - CollegeBoy 02:15:49 05/10/06 What if you ovaled all four holes to keep the proper - CaliguyPurdue 02:58:33 05/10/06 thats what he did.. - Shawn300zTT GT28R MD 07:16:33 05/10/06 Wow, i didn't read very thoroughly did I... (n/m) - CaliguyPurdue 08:29:02 05/10/06 ;) (n/m) - crazygreek 03:04:41 05/10/06 oh yea... - Shawn300zTT GT28R MD 05:28:05 05/10/06 Decent. (n/m) - Arnel 07:56:31 05/10/06 Subpar. - Kenny 09:04:08 05/10/06 I did that to a extra set of mine back in the beginning. - Woody75 (Denver) 10:25:04 05/10/06 Why not mill down the top and sides as well? (n/m) - boileralum 12:02:28 05/10/06 2nd (n/m) - Shawn300zTT GT28R MD 20:12:40 05/10/06 Nice! (n/m) - TT XTZ 10:26:27 05/10/06
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