rocket63 137 Posted April 14, 2011 Report Share Posted April 14, 2011 As the Porsche has been disabled whilst I service it, the Lotus has been pressed into daily service. Drove into work last night, parked up and off i go. Came out this morning, into first and then clonk, grind and engage 2nd. Thinking its me being ham footed. But no. Out of know where 2nd wont engage without a clonk and knashing of teeth. Drive home avaoiding second. Get home and parked static. Engage 2nd at standstill and the same issue for intial engage. Once in, I can go in and out at standstill through the first and second gear plane. I know the synchro is prone to wear. This came out of know where. I am easy on the transmission and dont wallop the car through the gears as I drive it sympathetically. I made need some adjustment on the cables as recently, reverse has been a little more difficult to engage, but it selects fine once engaged. Could it be adjustment or would consensus suggest synchro? All other gears including reverse are fine and the gearbox is otherwise smooth. Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to post Share on other sites
mr.oogieboogie 121 Posted April 14, 2011 Report Share Posted April 14, 2011 Check the translator rod can be a bit of a git to access I replaced mine when I had the floor out stainless marked where the old one was un do and then reader with stainless ends from McGill Motorsports and a cut down 10mm stainless bolt some grease and great. If you have moved the cables check there 1st though Quote It's Oogies turn to boogie Link to post Share on other sites
Vulcan Grey 251 Posted April 14, 2011 Report Share Posted April 14, 2011 could be be adjustment, synchro, or it could the the 2nd gear dog teeth on the gear or synchro hub. Quote Travis Vulcan Grey 89SE My Lotus Photo and Projects Album Link to post Share on other sites
rocket63 137 Posted April 15, 2011 Author Report Share Posted April 15, 2011 Well I am going to start with adjustment and a process of elimination. Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to post Share on other sites
Bibs 10,848 Posted April 15, 2011 Report Share Posted April 15, 2011 2nd and reverse are pretty close planes of movement, adjustment does sound fishy mate. Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to post Share on other sites
lotus4s 24 Posted April 15, 2011 Report Share Posted April 15, 2011 (edited) broken dog tooth... you might find that it clears itself up after a bit when the tooth falls out of the gears and into the bottom of the box. Edited April 15, 2011 by lotus4s Quote 1995 S4s Link to post Share on other sites
CHANGES 1,119 Posted April 15, 2011 Report Share Posted April 15, 2011 Split syncro,.... its kaput. ....box out ....recon....refit.....job done... Quote Link to post Share on other sites
nigeninja 60 Posted May 13, 2011 Report Share Posted May 13, 2011 Well when this happened to me a few months ago everyone on here was right in there telling me the syncro was gone,every one is now telling you to try and adjust, thats the same as what happen to me one min fine the next crunch. recon gearbox was my fix Quote Link to post Share on other sites
Rich H 4 Posted August 4, 2011 Report Share Posted August 4, 2011 (edited) Bugger second gear synchro has just suddenly gone on mine. Suddenly crunching into 2nd every time Just sorted the clutch adjustment too... Is it likely to be the synchro ring or more? Is changing it DIY possible? Any online guides? Ta Rich /sad of Preston Edited August 4, 2011 by Rich H Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
rocket63 137 Posted August 4, 2011 Author Report Share Posted August 4, 2011 Mine was a sticking synchro. Not damaged. All adjustment was fine. Topped up the gearbox as the level was about 500ml short of capacity. All fine since. Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to post Share on other sites
Rich H 4 Posted August 4, 2011 Report Share Posted August 4, 2011 How did you free it off? Have tried a bit of reverse to no avail or did it just unstick itself? Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
rocket63 137 Posted August 4, 2011 Author Report Share Posted August 4, 2011 Took the gearbox out and stripped it down. Quote Caught between a rock and a hard place in a catch 22 situation, So its 6 of one and half a dozen of the other. Your damned if you do, but your damned if you don't so shut your cock!!!!!!!!!!! Lotus Espirt Turbo S3 Lotus Esprit S4 Lotus Elise S2 Sport 130 Link to post Share on other sites
Rich H 4 Posted August 4, 2011 Report Share Posted August 4, 2011 Ah-ok thanks. Looks like I need to find time to take it to bits then. Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
Rich H 4 Posted August 4, 2011 Report Share Posted August 4, 2011 (edited) OK been digging about and found that it looks like I can split the box without much fuss and leaving 5th in place to start with. Does anyone have any decent pics of what I'm looking at? (And how I unstick the synchro) I found an Alpine UN1 box manual but the pics aren't that clear... I know the theory of operation but not the practice.... Thanks Rich Edited August 4, 2011 by Rich H Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
Rich H 4 Posted August 5, 2011 Report Share Posted August 5, 2011 OK found this: http://www.renaultalpineownersclub.com/Gearbox%20Manual/MRBVUN.pdf Looks OK, the only thing I don't have is a hydraulic press, but I might be able to borrow or hire one. Question is where do I get a new syncro ring from, any ideas? Ta Rich Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
jonwat 379 Posted August 5, 2011 Report Share Posted August 5, 2011 http://www.sjsportscars.co.uk/index.php?mod=10 Quote Cheers, John W http://jonwatkins.co.uk Link to post Share on other sites
Rich H 4 Posted August 5, 2011 Report Share Posted August 5, 2011 Thanks, but I did read about £70 synchros somewhere... or is that the citreon box? If possible I'd rather not strip it all down if I don't have to, there are a lot of 'as I'm here' parts (Bearings etc) I just can't afford right now... Clearly if it needs stripping (Broken/worn parts) I'll just do it. Next question: If it's just stuck (Sudden failure, no warning, no previous graunching + luck?) what gets stuck exactly? Is it the baulk ring getting stuck into the synchro hub? Is it just a matter of levering it back off without taking all the gears off or does it all need stripping down? Thanks Rich Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
Rich H 4 Posted August 5, 2011 Report Share Posted August 5, 2011 Box disconnected, I'll borrow an engine crane tomorrow and have it out. Rich Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
Rich H 4 Posted August 9, 2011 Report Share Posted August 9, 2011 Out, just printing off rebuild guide... Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
Rich H 4 Posted August 9, 2011 Report Share Posted August 9, 2011 Ok box split and good news! 2nd sync was very slightly cocked so slight tickle with a screwdriver and it popped free. All the gears look good with a tiny amount of backlash and the syncs look good. Not sure it'll come out in the pic. Any suggestions for things to clean it out with? Is degreaser a bad idea? Cheers guys Rich Quote Lotus Esprit S4 - Work in progress Porsche 924 Turbo - Parts chaser Smart Roadster Coupe - Hers Link to post Share on other sites
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