azza91 Posted December 21, 2012 Report Share Posted December 21, 2012 in about 7 years when you have gotten the body work finished, this will be an immaculate 82' haha Quote Link to comment Share on other sites More sharing options...
carbonboy Posted December 30, 2012 Author Report Share Posted December 30, 2012 (edited) It'll get there. :P Did some fiddling about with some spare gearboxes today, you might recall a few pages back I attempted to get a C52 into Blue Thing to replace the C40. That gearbox had issues, so back out it came, but I did discover that the C40 output shafts (small bits straight out of the gearbox) fit into the C52. So I dug out the gearbox I got as a spare when I bought my original AE82, from what I know it's from a 20v ST from an AE101 so likely a C56. As the output shafts from the C52 fit into it, I'm fairly confident I can use the C40 output shafts & driveshafts. Almost an insult putting it behind an 8v engine. :lol: I did need to swap over the switches for the reverse lights, they're the same device just different plugs for the wiring loom. Also, the speedometer sensors are different in that the C52 item is a cable drive & the C56 is an electronic item. The gears on them have the same markings (35/31) & the same number of teeth, thinking that swapping them over shouldn't hold any problems. Will compare them to the C40 item & check speedo accuracy with GPS afterwards. While I'm here, upgraded the shagged rubber bushes on the shifter cables to something a little firmer. Edited January 2, 2013 by carbonboy Quote Link to comment Share on other sites More sharing options...
azza91 Posted December 30, 2012 Report Share Posted December 30, 2012 c56 a 6 speed box? Quote Link to comment Share on other sites More sharing options...
carbonboy Posted December 30, 2012 Author Report Share Posted December 30, 2012 (edited) I wish, just a 5 speed. I think the 6 speed is a C160, from an AE111...? Don't quote me on that one. :) Edited December 30, 2012 by carbonboy Quote Link to comment Share on other sites More sharing options...
carbonboy Posted December 30, 2012 Author Report Share Posted December 30, 2012 Different ratios/final drive than a C50/2, managed to dig up the info. C401st 3.545 2nd 1.904 3rd 1.310 4th 0.969 Final 3.9 . C50: AE82, AE92 (All), AE101 w/ 4A-FE) MR2 Mk1a Gear Ratios: 1st: 3.545 2nd: 1.904 3rd: 1.310 4th: 0.969 5th: 0.815 Reverse: 3.250 final drive: 3.722 C52 1986 on?: ae82 4age, ae92/3 4age, ae102 w/ 7A-FE, ae101 Silvertop 20v (1st generation), MR2 Mk1b gear ratios: 1st: 3.166 2nd: 1.904 3rd: 1.310 4th: 0.969 5th: 0.815 Final: 4.058 C56: AE101 Silvertop 20v ((2nd generation) & AE111 Blacktop 20v) gear ratios: 1st: 3.166 2nd: 1.904 3rd: 1.392 4th: 1.031 5th: .815 final drive: 4.312 Quote Link to comment Share on other sites More sharing options...
azza91 Posted December 30, 2012 Report Share Posted December 30, 2012 ahh sweet! Quote Link to comment Share on other sites More sharing options...
carbonboy Posted January 1, 2013 Author Report Share Posted January 1, 2013 (edited) It turns out the swap wasn't as easy as I'd hoped for (when is it ever?), not only did I have a locating pin from the block meeting up with a corresponding one in the gearbox to deal with (a BIG hammer & a punch says fixed), I found out the brackets for the engine mounts on the front/back/passenger side of the gearbox are ever so slightly different. Unfortunately this was as I was trying to get the crossmember back in, not only do they not line up at all, the bolts for the mounts don't fit through the brackets. Cue epic rage fit & rapid swapping over of the brackets. The C56 also has an extra 'rib' underneath the passenger side driveshaft, meaning that getting the driveshaft in is not as easy as it once was.Also managed to cross-thread a crossmember bolt for about the third time, so I tapped a coarser thread & put a new HT bolt in. C40 out. 4 speed to the right, 5 speed to the left. Extra washers required for shifter cable bush replacement. Took it for a short test drive, second gear is a little crunchy if I try to rush shifting into it, but it could be that I'm used to a sloppy four-speed. I'll wait until I've driven it a bit more before I write off the synchros. RPM at 100km/h with the four speed was ~3600rpm in fourth. With the 5 speed it's now ~3200rpm in fifth. It's only ~400rpm I know, but it makes a big difference to noise levels, maybe fuel economy will get a little kick too. Edited January 2, 2013 by carbonboy Quote Link to comment Share on other sites More sharing options...
Subaru_kid Posted January 2, 2013 Report Share Posted January 2, 2013 Could be as simple as it needing a better quality oil, I know that has always been the case with my Corollas haha, what are you using in it? Quote Link to comment Share on other sites More sharing options...
carbonboy Posted January 2, 2013 Author Report Share Posted January 2, 2013 (edited) I'm using Penrite Hypoid Gear Oil, 80w-90 (Heavy duty, extreme pressure). The gearbox took just over 2.6 litres before it started to flow from the filler hole, which indicates full on a C-series? Edited January 2, 2013 by carbonboy Quote Link to comment Share on other sites More sharing options...
TOMsGPTurbo Posted January 2, 2013 Report Share Posted January 2, 2013 I had a c52 on my 3ETE, those gearboxes get around! Turn your photo's Luke! you're doing my head in. Quote Link to comment Share on other sites More sharing options...
Subaru_kid Posted January 2, 2013 Report Share Posted January 2, 2013 (edited) Its a touch too heavy, and Penrite doesnt make the best oils to say the least... Try going to western oil in sunshine and ask for 5L of Syngear 75w-90. Ive never had any issues with gearboxes since! Other than that, how does it feel? does it go any harder? Edited January 2, 2013 by Subaru_kid Quote Link to comment Share on other sites More sharing options...
carbonboy Posted January 2, 2013 Author Report Share Posted January 2, 2013 I had a c52 on my 3ETE, those gearboxes get around! Turn your photo's Luke! you're doing my head in. The good old C-series gearboxes, one of the dirty tramps of the automotive world. :lol: Wikipedia isn't entirely accurate of course, but it surprised me how many vehicles this gearbox series can be found in worldwide. Photo's are fixed. :P Its a touch too heavy, and Penrite doesnt make the best oils to say the least... Try going to western oil in sunshine and ask for 5L of Syngear 75w-90. Ive never had any issues with gearboxes since! Other than that, how does it feel? does it go any harder? It's what I had available sitting in the shed (from the '82 with a C50), one of the objectives of the 5 speed swap was to not spend any money doing it. Objective complete. :D Care to elaborate on/explain the Penrite comment? No offence taken, just curious. I might put the rubber bushes for the shifter cables back in to allow some 'give' for the rusty 5 speed operator, then put the bearings in once I've adjusted to it. Other than shifting into second it's smooth & quiet, BT certainly doesn't feel lightning quick due to it but it also doesn't feel like she's fighting against a slightly too tall a gear ratio anymore. For instance: Second gear with the C40 would make the engine 'lug' in the lower speed stuff where first would be revving its nut off. Second gear now has some pull in the lower rpm, same with third. I dare say it's no faster in terms of acceleration, it just feels smoother, like it actually WANTS to increase speed. :blinks: Having said that, a 4A would also cure that... :wink: Quote Link to comment Share on other sites More sharing options...
azza91 Posted January 3, 2013 Report Share Posted January 3, 2013 cheapy blow through carb turbo set up ;) Quote Link to comment Share on other sites More sharing options...
carbonboy Posted January 6, 2013 Author Report Share Posted January 6, 2013 With me doing it, I could see it turning into a cheapy blow-up turbo setup. :laff: Crawled back under, got the rear passenger side stripped & primed. Compared to this, the floorpan will be easy. :) Quote Link to comment Share on other sites More sharing options...
67Rolla-Ken Posted January 7, 2013 Report Share Posted January 7, 2013 Looking rediculously tidy under their. Quote Link to comment Share on other sites More sharing options...
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