cegrover Posted April 26, 2015 Share Posted April 26, 2015 (edited) My 280Z is in the shop getting AEM EMS and we've encountered a problem. I have a 280ZXT distributor and got the associated shaft on eBay. The distributor and shaft match up perfectly, but the drive gear on the shaft does not mesh with the worm gear in the engine/timing cover. It is too large. Is there more than one shaft? I'm not at the shop now, so I'm verifying the part number on the shaft (it was NOS in the Nissan box). I will post that when I get it. I recall that the seller listed it as fitting 81-83 ZXTs, but I have heard that the 81 was different. Can anyone confirm? I have searched a lot and haven't found this concern posted. Any help will be greatly appreciated! Edit: I added a pic of the two shafts, with the new turbo shaft on the right. http://forums.hybridz.org/gallery/image/30669-distributor-shafts/ Edited April 26, 2015 by cegrover Quote Link to comment Share on other sites More sharing options...
cegrover Posted April 26, 2015 Author Share Posted April 26, 2015 (edited) Turbo shaft/spindle part number is 15040-P8000. We're also seeing if it's possible to swap the gear between spindles. Edited April 27, 2015 by cegrover Quote Link to comment Share on other sites More sharing options...
camerashy Posted April 28, 2015 Share Posted April 28, 2015 (edited) I don't have the answer to your query cegrover, but I would love to know how this turns out being I'm also looking to put in the optical dizzy on my own car for sequential ignition. I did find this thread - http://forums.ctzcc.com/viewtopic.php?t=5784 in which a poster is adamant that there are different cogs, although a side by side comparisson, they look to be the same diameter (just a different number of teeth). I am wondering if the zcardepot and other sellers of the 280ZXT oil drive spindles on ebay are actually selling a KA spindle or perhaps the spindle from an R30 Skyline? I'm yet to see a crank oil drive worm gear that is of different diameter to another but I haven't seen all that many. Any ideas Fricfrac? Bookmarked! Edited April 28, 2015 by camerashy Quote Link to comment Share on other sites More sharing options...
cegrover Posted April 28, 2015 Author Share Posted April 28, 2015 I found that thread, too, but assumed that the reference to extra splines referred to the distributor end, not the drive gear. I guess we'll see... My spindle didnindeed come from ZCarDepot. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted April 28, 2015 Share Posted April 28, 2015 That makes no sense to me. The crank/distributor ratio should always be the same, turbo or non. Quote Link to comment Share on other sites More sharing options...
camerashy Posted April 28, 2015 Share Posted April 28, 2015 That makes sense Sleeper, seems to just be conflicting information depending where you go looking for it. It should be that the dizzy is spinning 2:1 the crank speed (i.e. the cam speed) that's how it's geared. cegrover - I've placed an order with the dealer for an 82-83 ZXT oil drive shaft so will get you photos/measurements when that comes in. Quote Link to comment Share on other sites More sharing options...
NewZed Posted April 28, 2015 Share Posted April 28, 2015 (edited) I think that Nissan used the same shaft diameter for quite a while. 1995 VG30E Pathfinder and 1975 280Z L6 distributors for example. I've pondered hybridizing a distributor (converting it to a CAS/distributor) to use later engine management in the L6 (without having to use a ZX turbo CAS), and measured both. Looks pretty simple except for the mount. Anyway, the short answer to #2 might be that the gears should be fairly easily pressed off and on and swappable. Edit - Note - I was confusing my parts here. Gears versus distributor shafts... Didn't really know what I was talking about. Edited April 29, 2015 by NewZed Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted April 28, 2015 Share Posted April 28, 2015 Anyway, the short answer to #2 might be that the gears should be fairly easily pressed off and on and swappable. Yeah, I would think so, as there is a worthwhile mod to make I need to do, which is pinning that gear to the shaft. Make sure it doesn't slip, once installed. Quote Link to comment Share on other sites More sharing options...
cegrover Posted April 29, 2015 Author Share Posted April 29, 2015 I didn't call it out in the thread, but it's in my signature. I think the difference might be my stroker engine. I have the V07 / LD28 crankshaft. We are now looking at swapping the worm gear on the crank to drive the ZXT dist/oil pump spindle. I will continue with updates as we have them. Quote Link to comment Share on other sites More sharing options...
cegrover Posted April 29, 2015 Author Share Posted April 29, 2015 Looks like L24 used the smaller-geared spindle and accompanying worm gear. The early worm gear is also bronze and NISMO sold it as an upgrade for all L-series, requiring the accompanying spindle. I think that's what I have...Will confirm soon. Quote Link to comment Share on other sites More sharing options...
NewZed Posted April 29, 2015 Share Posted April 29, 2015 I didn't know what I was talking about above in #7, and mixed some weird stuff in that post. Made an edit. Here's a page that might be useful - http://www.carpartsmanual.com/datsuns30/DatsunZIndex/Engine240Z260Z/PistonCrankshaft/tabid/1564/Default.aspx You're really taking about oil pump drive gears, mounted on oil pump shafts (quills), that couple with distributor shafts. Not Distributor Shafts. That's where my brain got misdirected. Like here - http://www.carpartsmanual.com/datsuns30/DatsunZIndex/Engine240Z260Z/OilPump/tabid/1572/Default.aspx Quote Link to comment Share on other sites More sharing options...
cegrover Posted April 29, 2015 Author Share Posted April 29, 2015 Good points. Per your links, I'm talking about two parts, which must be matched in order to work: "ASSY-SPINOLE OIL PUM" - I believe this is a typo, and should be "ASSY-SPINDLE OIL PUMP" and, notably, drives the distributor, in addition of the oil pump. and "GEAR-OIL PUMP DRIVE" It seems early and late L-series engines used different oil pump drive gears and thus had different spindle gears to match. Quote Link to comment Share on other sites More sharing options...
cegrover Posted May 7, 2015 Author Share Posted May 7, 2015 (edited) So, the worm gear has been swapped for a later year part and it works with the ZX-T spindle/shaft. The one in the engine was indeed bronze and consistent with an early part or one sold as a NISMO part. Edited May 7, 2015 by cegrover Quote Link to comment Share on other sites More sharing options...
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