metalmonkey47 Posted March 3, 2012 Report Share Posted March 3, 2012 I saw some discussion on this a while back, but can't seem to find any usable information. What is required to mount a KA to a L20B? I know it's about 34'' long vs 26 inches, but what do I need to look into other then driveshaft length? Quote Link to comment
flatcat19 Posted March 3, 2012 Report Share Posted March 3, 2012 Your shifter is gonna be so far back. Quote Link to comment
Laecaon Posted March 3, 2012 Report Share Posted March 3, 2012 Isnt it also going to be crooked, like to the right. I thought they were like Z motors. And shifter far back? Same spot as if you swapped in the KA with the tranny... Quote Link to comment
metalmonkey47 Posted March 3, 2012 Author Report Share Posted March 3, 2012 Your shifter is gonna be so far back. orly? I'll just put in bucket seats Isnt it also going to be crooked, like to the right. I thought they were like Z motors. And shifter far back? Same spot as if you swapped in the KA with the tranny... I was hoping someone would say "put on an L series front cover" and it would fit perfect lol. KA 5 speeds are like crack down here. People throw them away for scrap. L series 5 speeds on the other hand... Quote Link to comment
flatcat19 Posted March 3, 2012 Report Share Posted March 3, 2012 What about a 720 tranny? http://community.rat...eed-for-a-l20b/ ***Wait. You have a long one stock, right? Quote Link to comment
datsunaholic Posted March 3, 2012 Report Share Posted March 3, 2012 I was hoping someone would say "put on an L series front cover" and it would fit perfect lol. Well, yes, after you bore out the shaft bosses for the larger bushings/bearings/etc. It's not a direct swap. Quote Link to comment
Elkie Posted March 3, 2012 Report Share Posted March 3, 2012 Bellhousing would have to be swapped, because of the angle the engine sits, like laecaon mentioned. This would include the nap-z motor trannies as well I believe. The KA tranny has a different mounting for the driveshaft as well, but if your already shortening a driveshaft, you can get a custom end put on. Another thing I can think of is whether the T/O bearing, flexplate, etc. would be interchangeable, I would guess not. Quote Link to comment
Ratty260z Posted March 3, 2012 Report Share Posted March 3, 2012 Look it up on hybridz, you'll need a Z 4 speed bellhousing get it machined a bit and your good to go. you might need to change the clutch disc but I can't remember for sure. The KA 5 speeds are nice trannies and a short shifter would be easier to come by and be cheaper then one for a Z tranny. Quote Link to comment
datzenmike Posted March 3, 2012 Report Share Posted March 3, 2012 The 62mm KA counter shaft bearing would need to be removed and a 56mm 620 or 280z/zx bearing substituted that will fit the hole in the 620/280 case... or bore the case out to fit the KA bearing. If boring the case the KA cover plate must be used, if not the 620/280z cover is fine. On the inside, the case needs to be machined to clear the wider KA front counter gear. The 1st/2nd shift rod hole needs to be drilled out to 16mm from 14mm. Lot of work but really good tranny. Look it up on hybridz, you'll need a Z 4 speed bellhousing g Look for a 5 speed if possible. Some 4 speeds have the reverse light switch in a different position then the 5 speed. Here the 4 speed switch hole has been filled and the switch moved abut an inch forward. This can be avoided with a proper 5 speed case. Quote Link to comment
Icehouse Posted March 3, 2012 Report Share Posted March 3, 2012 Get ahold of Chris he machined a napz bell for me and Dave to accept the ka trans. Quote Link to comment
datzenmike Posted March 5, 2012 Report Share Posted March 5, 2012 Still got those pictures wolfman? There's one of the tranny split apart that got me wet. Still have the one of the tranny exploded and the twisty driveshaft.. Quote Link to comment
Master-O-Turbonics Posted March 10, 2012 Report Share Posted March 10, 2012 The 71B 5 speed and long tail 4 speed has an overall length of 31.5". Pretty close to the length of the 71C gearbox. Just have to work out the bellhousing work like DATZENMASTERMIKE has described above. Quote Link to comment
datzenmike Posted March 10, 2012 Report Share Posted March 10, 2012 I think the early D21 Hardbody 71C is quite close to the 71B. The S12 200sx and later 240sx 71C are much longer. I haven't had the pleasure of measuring either (and everyone measures them differently) additionally, they often have a metal dust shield on the back. Some include this others do not. Quote Link to comment
metalmonkey47 Posted March 10, 2012 Author Report Share Posted March 10, 2012 Totally forgot I didn't reply to this thread. What about a 720 tranny? http://community.rat...eed-for-a-l20b/ ***Wait. You have a long one stock, right? You rock flatcat! That actually seems like a pretty feasible idea. All I know is that my trans measures about 26'' Well, yes, after you bore out the shaft bosses for the larger bushings/bearings/etc. It's not a direct swap. Sucks to hear that. I was looking more for simplicity here, since L series 5 speeds are worth their weight in gold down here (practically) I'm looking for other possible solutions. I will at the moment keep looking for L series transmissions, however the amount of info in this thread is phenomenal. I'm bookmarking this because I may be back to do this change over one day. Quote Link to comment
datzenmike Posted March 10, 2012 Report Share Posted March 10, 2012 Wait what the hell are you trying to mount to what motor? I'm lost.Oh yeah a KA transmission to an L20B.... But what vehicle? A truck would be easier and more options than say a 510 or B-210. Quote Link to comment
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