C.A.R. Posted July 8, 2008 Posted July 8, 2008 It seams people are getting a bit confused so I've copy & pasted from another post: 5 Speed Gearbox's from: 280ZX 240/260Z (775mm long) 240K Skyline C210 Skyline R31 Skyline (Bellhouseing needs changing) S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing) S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing) 200B 240/260/280C sedans These all fit, BUT they have different mounts & different internal ratio's & gear sizes. There may be a bit of mucking about getting them to fit. The early 240Z box is called a 71A (has the output flange at the back of the box). Late model 240Z & 260Z is called a 71B box, And the R31 skyline, R32 GTST Skyline & S13 (SR & CA) boxes are all called 71C's. They are all just evolutions of the same box. The only ones that WON'T be suitable are: R30 Skyline Stanza SSS Any of the Datsun L4 4-speed boxes. These gearbox's are around 660mm in length. These are 'short' boxes & are not long enough. The box's from the R33 Skyline & the 300ZX (Z32) will fit but require bellhousing modifications. When fitting a 260Z gearbox into a 240Z, normally the 260Z shifter will hit the front edge of the centre console (due to the fact the 260Z box has a shorter extension housing. This is how you get the 260Z shifter to come up in the correct position - heat it up with the Oxy torch & put a few bends in it! --------------------------------------------------- 260Z Gearbox Ratios are: 1st: 2.906 2nd: 1.902 3rd: 1.311 4th: 1:1 5th: 0.864 Rev: 3.382 (Open for correction at this time!) --------------------------------------------------- Speedometer Drive cogs: YELLOW is the 16 tooth for the 3.36 Nissan Pinion Assy P/N: 32702-58S16 BLACK is the 17 tooth for the 3.54 Nissan Pinion Assy P/N: 32702-58S17 BLUE is the 18 tooth for the 3.70 Nissan Pinion Assy P/N: 32702-58S18 WHITE is the 19 tooth for the 3.90 Nissan Pinion Assy P/N: 32702-58S19 RED is the 20 tooth for the 4.11 Nissan Pinion Assy P/N: 32702-58S20 PURPLE is the 21 tooth for the 4.38 Nissan Pinion Assy P/N: 32702-58S21 HTH Quote
nizm0zed Posted August 13, 2008 Posted August 13, 2008 awesome info there lurch, By chance, if anyone knows (or can measure) what is the lengths of the boxes? from bellhousing flange to output shaft flange? i have a spare box that i suspect may be a short one, but dont know. I only knew it was from a L series engine of some description. I guess to add to it, if anyone does have actual gearbox ratios, it would be good to keep all in one thread, would make a good resource for selecting approriate ratios to suit particular applications. Quote
NZeder Posted January 16, 2009 Posted January 16, 2009 There is a rare factory L6 71C box I know I have one it is from a Nissan Laurel C32 fitted with a LD28 so I have not found out the ratio's yet but it is a L6 71C from the factory ie no mods to the bellhousing required. The partnumber for the front bellhousing on this box is 32101-49L07 and there is an alternative part-number listed as 32101-49L80 Quote
C.A.R. Posted January 16, 2009 Author Posted January 16, 2009 Well I'll be buggered ugly! Thanks Mike Quote
NZeder Posted January 16, 2009 Posted January 16, 2009 Only paid $80 for it too and do you think I can find another one the bellhousing part number shows it was only available on the C32 (Laurel) and F30 (Leopard). I have not confirmed if this there was ever a 71C box fitted behind the last of the L20ET in the Laurel C31's etc, but I think these boxes were only available on the LD28 powered cars before the RD28 was used to replace the LD. Saying of the day: Do not disturb......already disturbed Quote
Aaron Neubauer Posted April 11, 2009 Posted April 11, 2009 Not sure if its known, the gearbox spline on a 260Z tailshaft will fit a RB20DET gearbox. I was bored and my RB20 box was sitting next to my 260Z tailshaft and I thought "what if.....?". Quote
C.A.R. Posted April 11, 2009 Author Posted April 11, 2009 That's coz it's basicly the same box, Newby Quote
Whittie Posted July 31, 2010 Posted July 31, 2010 There is a rare factory L6 71C box I know I have one it is from a Nissan Laurel C32 fitted with a LD28 so I have not found out the ratio's yet but it is a L6 71C from the factory ie no mods to the bellhousing required. The partnumber for the front bellhousing on this box is 32101-49L07 and there is an alternative part-number listed as 32101-49L80 The local mechanic in Perth here has seen a few of these boxes on Z's he has wrecked. At the time he never thought anything of it and it the gearboxes were rubbish just threw them out. When I was doing the 71C gearbox swap he swore blind that he had seen a box come off an L series with the larger bearing hole and skimmed face, good to know he wasn't mad cause in the last year he hasn't found another anywhere despite looking. Does anyone know if it's possible to buy these bellhousings? Would save some pain instead of modifying them. Quote
dazzed Posted January 29, 2011 Posted January 29, 2011 The local mechanic in Perth here has seen a few of these boxes on Z's he has wrecked. At the time he never thought anything of it and it the gearboxes were rubbish just threw them out. When I was doing the 71C gearbox swap he swore blind that he had seen a box come off an L series with the larger bearing hole and skimmed face, good to know he wasn't mad cause in the last year he hasn't found another anywhere despite looking. Does anyone know if it's possible to buy these bellhousings? Would save some pain instead of modifying them. hey??? Quote
dazzed Posted January 29, 2011 Posted January 29, 2011 It seams people are getting a bit confused so I've copy & pasted from another post: 5 Speed Gearbox's from: 280ZX 240/260Z (775mm long) 240K Skyline C210 Skyline R31 Skyline (Bellhouseing needs changing) S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing) S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing) 200B 240/260/280C sedans These all fit, BUT they have different mounts & different internal ratio's & gear sizes. There may be a bit of mucking about getting them to fit. The early 240Z box is called a 71A (has the output flange at the back of the box). Late model 240Z & 260Z is called a 71B box, And the R31 skyline, R32 GTST Skyline & S13 (SR & CA) boxes are all called 71C's. They are all just evolutions of the same box. The only ones that WON'T be suitable are: R30 Skyline Stanza SSS Any of the Datsun L4 4-speed boxes. These gearbox's are around 660mm in length. These are 'short' boxes & are not long enough. The box's from the R33 Skyline & the 300ZX (Z32) will fit but require bellhousing modifications. When fitting a 260Z gearbox into a 240Z, normally the 260Z shifter will hit the front edge of the centre console (due to the fact the 260Z box has a shorter extension housing. This is how you get the 260Z shifter to come up in the correct position - heat it up with the Oxy torch & put a few bends in it! --------------------------------------------------- 260Z Gearbox Ratios are: 1st: 2.906 2nd: 1.902 3rd: 1.311 4th: 1:1 5th: 0.864 Rev: 3.382 (Open for correction at this time!) --------------------------------------------------- Speedometer Drive cogs: YELLOW is the 16 tooth for the 3.36 Nissan Pinion Assy P/N: 32702-58S16 BLACK is the 17 tooth for the 3.54 Nissan Pinion Assy P/N: 32702-58S17 BLUE is the 18 tooth for the 3.70 Nissan Pinion Assy P/N: 32702-58S18 WHITE is the 19 tooth for the 3.90 Nissan Pinion Assy P/N: 32702-58S19 RED is the 20 tooth for the 4.11 Nissan Pinion Assy P/N: 32702-58S20 PURPLE is the 21 tooth for the 4.38 Nissan Pinion Assy P/N: 32702-58S21 HTH good info there Lurch , owners can use their satnav to determine exactely what they need Quote
drzoidberg Posted October 26, 2011 Posted October 26, 2011 It seams people are getting a bit confused so I've copy & pasted from another post: 5 Speed Gearbox's from: 280ZX 240/260Z (775mm long) 240K Skyline C210 Skyline R31 Skyline (Bellhouseing needs changing) S13/S14 Silvia/180SX SR20 & CA18 engine (Bellhouseing needs changing) S1/2 Bluebird (S3/CA20 box's; Bellhouseing needs changing) 200B 240/260/280C sedans In regard to the use of an r31 (rb engine) gearbox, how does the bellhousing swap over work?I have a L20 bluebird 5speed gear box is it just a matter of pulling the belhousings of both boxes swiching them over and bolting the box back together? if so whatcluch/flywheel business is there do you use rb30 or L series? Any one know how strong blue bird 5speeds are? Relative to say an l28 manual box (280)? cheers fellas Quote
dat2kman Posted October 26, 2011 Posted October 26, 2011 Bluey's and 280zx internals all same, maybe a few minor changes to casting patterns markings, and location of some swiches, ie fuel injection needs to know if you in fifth gear etc. To use the r31 cluster with centreplate, extension housing assy into a L series bell housing to make it bolt to any L motor, a few things need to be done, drill top selector shaft hole to 16mm use emery to make smooth. Prize off countershaft bearing on r31 cluster, as you need to use the smaller L series front countershaft bearing. Behind this bearing is a circlip, holding a stepoed washer onto two tangs on the countershaft. , i mount this onto a old dummy c/shadt in my lathe and turn it down on outside edge to remove the lip, as ypu need to get rid of lip to be less diam than the L series c/shaft bearing, you can grind it off by hand gringong wheel, it is not important, BUT it has to go back on, and ciclip put back. Push small diam bearing on, and fit L bell, presto the easy way to do it. If you in Brisbane i can have it all done quick as a flash! Quote
drzoidberg Posted October 29, 2011 Posted October 29, 2011 cheers for the info. Im in adelaide unfortunatly, iv found a thread on how to do the bell housing swap, but im thinking il just use the blue bird box seeing as its the same box as 280zx thats good news, its been rebiult so id like to use it. Quote
Six_Shooter Posted October 31, 2011 Posted October 31, 2011 Which "260 box" is cited above as needing the shifter modification? I fitted a 280ZX box, same or similar to 260/280Z box, and used the 240 shifter. It cleared the floor without issue. Quote
C.A.R. Posted October 31, 2011 Author Posted October 31, 2011 A 260Z box 'can' clear the floor OK depending on the shifter, but it won't clear the 240Z centre console. If your's did, are you 100% sure it was a 280ZX gearbox? Quote
Six_Shooter Posted October 31, 2011 Posted October 31, 2011 Yes, 110%. I pulled it from the donor car myself. Quote
Mr Camouflage Posted October 31, 2011 Posted October 31, 2011 Hey Lurch, what about the 71C from a Z31, with a bell housing change. Will that fit (with or without shifter mods)? Quote
Z Posted October 31, 2011 Posted October 31, 2011 I'll lob something in here to make it even more confusing Mwahahahaaa! Now I'm no expert in this stuff but I've just had a 71C recoed and the 260 bell modified, god knows when it will end up in the car though. While I was speaking to Stuart from SWM about the gearbox mount modification for this upgrade, he said that the year of your 240 will also affect where the stick ends up. Apparently the earlier cars (being 71) tunnel hole is further back than the later cars (72, 73), so yet another consideration. I guess if you want to do a 71B/C change it obviously can be done, you will have a few mods to consider that are particular to your car/gearbox/console combo. Quote
C.A.R. Posted October 31, 2011 Author Posted October 31, 2011 OK, this is not a walkthrough for 71C gearbox conversions, guys. Quote
Z Posted October 31, 2011 Posted October 31, 2011 No it's not a thread on 71C conversions, it's a thread on "What Gearboxes Fit" and Camouflage simply asked if a 71C would fit... Do whatever you like, I'm pointing out that different cars have different locations of their gearbox lever tunnel thingo hole lol, quoted by someone with more knowledge than most... Seems pretty on topic to me. 260DET 1 Quote
tbscobraZ Posted November 1, 2011 Posted November 1, 2011 Has anyone ever but an RB26 (auto) box behind and L-series? Not the 4wd one obviously the rwd one out of a R34. Quote
Mr Camouflage Posted November 1, 2011 Posted November 1, 2011 Was just asking about the Z31 since you mentioned "the 300ZX (Z32) will fit but require bellhousing modifications.", and I have a manual Z31 i'll probably be wrecking. Quote
dat2kman Posted November 1, 2011 Posted November 1, 2011 I have a large selection of gearsticks, approx 15, from various 71 boxes, A,B&C, they all have odd bends forwards, backwards, big bits of flats at pivot, and straight up. The earlier 240 with a71a a longer box, the stick is straight, the later 71b the box shifter location was closer to engine, and to get stick i. Good psition, factory bented it back a bit. Some have S bends etc. All nothing a bit of trimming a hole and screwing a bit of rubber flap wont fix The factory competition option 1 2 3 boxes all had straight sticks, and a wooden knob, with a small silver metal button imbedded. Quote
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