ejydryd Posted November 23, 2016 Report Share Posted November 23, 2016 I purchased my 510 years ago and forgot to ask the seller which transmission was in the car. From all my research I believe it's either from a ZX or 720 pick up. I would post pictures but do not know how. It is a 5-speed. The trans is a long (roughly 32 inches long), L1 is marked on the bell housing, and below the shifter, on the right side, there are also markings #Lb29. It also looks like the drive shaft has been modified to be shorter. Any help would be appreciated. Thank you. 1 Quote Link to comment
datzenmike Posted November 23, 2016 Report Share Posted November 23, 2016 Look where the speedometer cable enters the transmission. This won't tell you exactly what it is but it will tell you what it ISN'T. There is a 10mm head bolt that secures it. If the bolt is on the underside of the cable (6 o'clock) the transmission was built '80 and newer so it could be an '80-'83 280 zx close ratio '80 2wd from a 720 (only that one year 720) wide ratio '80 810 mid ratio '81-84 Maxima mid ratio. Start there. If bolt is at the 12 o'clock position on top it can be from the following... '77-78 280Z mid ratio '79 280zx (non turbo) mid ratio (only the '79 had this, '80-'83 were all close ratio '78-'79 810 mid ratio 1 Quote Link to comment
ejydryd Posted November 23, 2016 Author Report Share Posted November 23, 2016 Thanks Quote Link to comment
datzenmike Posted November 24, 2016 Report Share Posted November 24, 2016 Just saying this will narrow it down by over half. Once that is done there are a few more thing you can look for or ask about. AND I have assumed it IS a 71B so maybe a few pictures of it? 1 Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 I actually have a 5spd transmission that says ZL71B what does it go to... I've been wanting to sell it but don't really know what it mates too to list it properly. Quote Link to comment
datzenmike Posted December 16, 2016 Report Share Posted December 16, 2016 Post a picture of it, only way to be sure. Include one from the rear shooting forward to the engine. http://community.ratsun.net/topic/54932-photobucket-ratsun/ Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 I'll have to take that pic later. This is what I got right now. Thanks.. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 I know I does not work on an L series motor. Its a short transmission and seems to tilt the opposite way.. my though was 80s maybe from a 720.. maybe a napz motor or similar block?... Quote Link to comment
G-Duax Posted December 16, 2016 Report Share Posted December 16, 2016 I have a 63A that is from my son's 510, and a ZL63A with the same weird angle form an A10 with a Naps-Z engine. Guessing that is what the 'Z' stands for...... Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 That's weird I just received an email about your response and It say something completely different from what you stated here.... something about the 510 and a 200sx.... Quote Link to comment
wayno Posted December 16, 2016 Report Share Posted December 16, 2016 This transmission appears to be napZ series out of a truck or car with a napZ engine. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 The same thing with you wayno... the email about this thread has you saying something about the ridge in regards to the bolt pattern... ? Weird. Any way that's what I though about the napz. Quote Link to comment
G-Duax Posted December 16, 2016 Report Share Posted December 16, 2016 the email about this thread has you saying something about the ridge in regards to the bolt pattern... ? Yup, that is what I first wrote. Then I checked with #1 son, and he set me strait...... Quote Link to comment
wayno Posted December 16, 2016 Report Share Posted December 16, 2016 If you are standing behind the transmission looking forward if the hole is on the right of the ridge it is napZ series engine type, if on the left of the ridge it is L series type. The problem is that if you are looking at the transmission from the front then the hole is on the left side of the ridge, and if you say Z series folks could think you were talking about a Z car which has an L series type, so it is best just to say what it appears to be and leave it at that. Quote Link to comment
wayno Posted December 16, 2016 Report Share Posted December 16, 2016 This is an L series type, I have no idea what engine this is on though. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 So here's a question. Assuming all I have is what I have. no junk yards in new England still have Datsuns to raid. I have a regular 4speed for an L series and I have this one for a napz. Is there a way to piece both together to get a 5spd? Or is it a cut a weld process of swapping the bell housing? Quote Link to comment
G-Duax Posted December 16, 2016 Report Share Posted December 16, 2016 Since the bell housing forms the front half of the trans body, you could do a want to buy thread for one meant for a L-series, that has internal damage, and try to buy the front casting. Someone must have a DOA unit around, that they destroyed the gears on. Any 71B front half should work. It would be a lot easier than cutting and welding. I only do that when I'm building a half breed, like a Toyota engine to a Nissan trans. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 Ya that's not a bad idea... I will have to look into that and see what I can find... worse case if I get bored I can try the cut and weld process... I know anything can be done with the right bit of skill but a housing swap is more my ability. .. thanks... Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 Ya that's not a bad idea... I will have to look into that and see what I can find... worse case if I get bored I can try the cut and weld process... I know anything can be done with the right bit of skill but a housing swap is more my ability. .. thanks... Quote Link to comment
wayno Posted December 16, 2016 Report Share Posted December 16, 2016 So here's a question. Assuming all I have is what I have. no junk yards in new England still have Datsuns to raid. I have a regular 4speed for an L series and I have this one for a napz. Is there a way to piece both together to get a 5spd? Or is it a cut a weld process of swapping the bell housing? There are a lot of vehicles with L type transmission cases other than the 720 which only had the L type case one year in the 4 and 5 speeds, the Z cars(Datsun/Nissan) had L type engines with L type cases, the 620 had 4 and 5 speeds with the L type case you need, I personally have never used a 620 case in any of my builds, others have. When and if you do find someone that is going to sell a front case to you, make sure you get a photo of the case too make sure it is an L type case. Quote Link to comment
datzenmike Posted December 16, 2016 Report Share Posted December 16, 2016 It's from a 720. Only they had the 26" long 71B transmissions. You can measure to confirm as pictures can distort and sometimes hard to tell. Looks like 26". This transmission would be a great 5 speed for a 521, 510, 710 or the first year 620 as they also had 26" four speeds. This would save you shortening the drive shaft if you were to get an L series front case. Only the front case from another 71B 4 or 5 speed would swap onto this Z series transmission. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 Thanks for the extra info.... it's definitely 26".. didnt even think this was possible, but it definitely make sense about swapping to an l series 71b front case, and your sure even the 4spd would work?... I really don't know how the internals are different between the 4 and 5 speed.. and can the bell housing come from possibly a longer 71b? Quote Link to comment
wayno Posted December 16, 2016 Report Share Posted December 16, 2016 It has to be the 71b type of 4 speed, the front cases are the same, the tail shaft housing is slightly different, it has 6 bolts in front of the shifter holding a cover on like in the photo below. You can see the hole is on the left side of the rib in this photo. As far as I know the 720 only came with long shaft 4 speeds. Your short shaft also has the large cluster gear bearing, you will need to buy a small bearing as all the L type cases have the small bearing as far as I know. Quote Link to comment
Crashtd420 Posted December 16, 2016 Report Share Posted December 16, 2016 Thanks again I guess I got some searching to do ... Quote Link to comment
G-Duax Posted December 16, 2016 Report Share Posted December 16, 2016 Wayno, I like your transmission removal tool in the last picture. Quote Link to comment
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