evildky Posted April 14, 2007 Share Posted April 14, 2007 the input shaft bearing stays, it's the countershaft bearing that needs to be swapped from the L28, (the one with the 2 pointing at it) once you get them apart it's pretty obvious, the L housing needs the L countershaft bearing Quote Link to comment Share on other sites More sharing options...
DriftZ Posted April 14, 2007 Share Posted April 14, 2007 Alright, I get that. Now the only stuff I need to know is, is the input shaft a 240sx unit? And do I use a 240sx clutch or a 280zx clutch? Sorry if these are dumb questions. I just need to know exactly what parts to buy before I buy them. Quote Link to comment Share on other sites More sharing options...
steveosupremeo Posted April 15, 2007 Share Posted April 15, 2007 you will use the KA input shaft bearing but you'll be swapping over the z counter shaft bearing to the KA counter shaft. Quote Link to comment Share on other sites More sharing options...
steveosupremeo Posted April 15, 2007 Share Posted April 15, 2007 i'm using a 240mm flywheel and a 280zx turbo clutch with my KA swap in progress. dunno what years 240sx clutches fit, i know a lot of them were 225mm, not sure if there were any 240mm...maybe 89-90? not sure, thats why i'm just gonna go with an ACT for 280zx turbo. Quote Link to comment Share on other sites More sharing options...
evildky Posted April 18, 2007 Share Posted April 18, 2007 once you get the front case off it'll be pretty obvious, the input shaft stays in place, the only part thet needs swapped is the countershaft bearing and the frotn case, other than that, just minor clearanceing and modifyling the crossmsmber and driveshaft, I ran mine with a 225 240z flywheel and clutch just because thats what I had, frotn case, throwout bearing, collar etc all stay the same it really is pretty simple once yotu get down to it Quote Link to comment Share on other sites More sharing options...
DriftZ Posted April 20, 2007 Share Posted April 20, 2007 Cool, I just need to find a tranny in these parts and I can stop bothering y'all about this. lol Quote Link to comment Share on other sites More sharing options...
260zturbo Posted April 20, 2007 Share Posted April 20, 2007 the number 2 u have is a bearing. take the one off your datsun 5 speed. and place on your ka tranny. the number one u have in that pic needs to be boared out. the reason for that is bc the shaft can not go in such a small hole. i forgot the size of what it needs to be borded out to bc i did the swap long time ago. this is me trying to recall info after a couple coronas Quote Link to comment Share on other sites More sharing options...
4everDATSUN Posted April 29, 2007 Share Posted April 29, 2007 do you have to use a 5speed bell housing or can i use a 4speed bell housing? i dont have the two to compare. Quote Link to comment Share on other sites More sharing options...
evildky Posted April 30, 2007 Share Posted April 30, 2007 the whole purpose is to use the ka 5 speed, as the L 5 speeds are so hard to come by, so yes you use a 4 speed front case, you can use the front case from any L series tranny save fro the early series with the removable bellhousing and the t-5 which also has a removable bellhousing Quote Link to comment Share on other sites More sharing options...
ezzzzzzz Posted April 30, 2007 Share Posted April 30, 2007 I picked up a KA tranny from the local PNP yesterday for $92.00. It came out of a 90 200SX. Sadly, I need to return it. When I broke it open last night the syncros and bearings were shot beyond imagination. 1st, 5th/reverse, and reverse idler gears were heavily damaged. There was enough metal in the bottom of the case to fill a teaspoon and then some. The kid driving the car must have been suffering from delusions of grandeur thinking he was some kind of super race car driver. I wonder if he ever used the clutch! You could actually move the countershaft away from the mainshaft such that the gears would nearly disengage. As for the bellhousing, I will take my 280Z housing to my machinist and have the bearing opening enlarged, the face milled .038 inches, and the 1/2 rod hole reamed to size. Quote Link to comment Share on other sites More sharing options...
ezzzzzzz Posted May 7, 2007 Share Posted May 7, 2007 Picked another 240SX transmission (89 model). I'll be buying reverse idler and o/d gears from David at Courtesy (along with more gears to fix the close ratio boxes). It seems everyone misses fourth and grinds reverse when shifting hard and chips these teeth up. I'm building up two other close ratio boxes and another wide ratio box. There's already a wide ratio finished and ready for someone to install. All of these have or will have new KOYO or NACHI bearings, brass syncros and non-damaged gears throughout. If someone is interested in a 5-speed box just PM me. The one thing I haven't determined yet is how the speedo housing/gear will work in the KA box. That trans has the VSS with a larger driven gear and larger drive gear too. I've yet to determine if the smaller gear of the 280ZX will engage properly when the housing is clocked for proper installation. Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 7, 2007 Share Posted May 7, 2007 Picked another 240SX transmission (89 model). I'll be buying reverse idler and o/d gears from David at Courtesy (along with more gears to fix the close ratio boxes). It seems everyone misses fourth and grinds reverse when shifting hard and chips these teeth up. I'm building up two other close ratio boxes and another wide ratio box. There's already a wide ratio finished and ready for someone to install. All of these have or will have new KOYO or NACHI bearings, brass syncros and non-damaged gears throughout. If someone is interested in a 5-speed box just PM me. The one thing I haven't determined yet is how the speedo housing/gear will work in the KA box. That trans has the VSS with a larger driven gear and larger drive gear too. I've yet to determine if the smaller gear of the 280ZX will engage properly when the housing is clocked for proper installation. Supposedly it will engage. I believe from the info I've read on the swap you use the Z speedo gear and housing. Supposedly it fits. How much do you charge for a wide ration trans ready to drop in? Quote Link to comment Share on other sites More sharing options...
ezzzzzzz Posted May 7, 2007 Share Posted May 7, 2007 It is dependent upon what parts are required to do a proper build. The box I have has good gears, new bearings, syncros, seals, sandblasted and painted case. It is ready to go and would be $300.00 plus shipping. You would have to swap over your shifter, boots, and throwout bearing, I could provide the shift fork or you could use yours. Since you are in NC is is likely you could drive over to pick it up though if you're interested. Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 7, 2007 Share Posted May 7, 2007 It is dependent upon what parts are required to do a proper build. The box I have has good gears, new bearings, syncros, seals, sandblasted and painted case. It is ready to go and would be $300.00 plus shipping. You would have to swap over your shifter, boots, and throwout bearing, I could provide the shift fork or you could use yours. Since you are in NC is is likely you could drive over to pick it up though if you're interested. Very interesting...I'm really tempted, but unfortunately at the moment short on funds. Still trying to get rid of this MSII ECU so i can get my bearings for my stroker build. Quote Link to comment Share on other sites More sharing options...
ezzzzzzz Posted May 7, 2007 Share Posted May 7, 2007 I feel your pain. I have too much month left at the end of the money too. I have four more boxes to build. The rebuild kits are not cheap. Three of these will need additional gears at a cost >$200 per tranny. What one gets is as close to a new box as possible though. Quote Link to comment Share on other sites More sharing options...
naviathan Posted May 7, 2007 Share Posted May 7, 2007 That's good stuff. At least when I do aquire the cash I know I can count on getting a quality piece. Quote Link to comment Share on other sites More sharing options...
DriftZ Posted May 13, 2007 Share Posted May 13, 2007 so yes you use a 4 speed front case, you can use the front case from any L series tranny save fro the early series with the removable bellhousing and the t-5 which also has a removable bellhousing So which years of Z bellhousings will bolt up to an l28et? Quote Link to comment Share on other sites More sharing options...
ezzzzzzz Posted May 14, 2007 Share Posted May 14, 2007 70-83 Quote Link to comment Share on other sites More sharing options...
evildky Posted May 16, 2007 Share Posted May 16, 2007 the series 1 240's (70 through early 71) (I suppose the first 14k cars), use a completely different transmission, with an actual removable bellhousing, it won't work for a donor Quote Link to comment Share on other sites More sharing options...
DriftZ Posted May 28, 2007 Share Posted May 28, 2007 So i could take any bellhousing from 70-83 and it would bolt up to the l28 and a KA tranny? That sounds too easy to me. Quote Link to comment Share on other sites More sharing options...
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