Missed a bit. No definative costs, but think we put something up a while ago. 5k rings a bell.
With regard to the shorter final drive, as its a three rail gearbox, there would be one crown wheel and two mainshafts with pinions on them. Added to that, both shafts use one of the gears twice from memory, so its a bit of a thinker to sort out. VAG engines only normally rev to 6.5-7ish so not much call for them, as you can get to a 170 odd max by changing to a different box.
[quote=JDS]Missed a bit. No definative costs, but think we put something up a while ago. 5k rings a bell.
With regard to the shorter final drive, as its a three rail gearbox, there would be one crown wheel and two mainshafts with pinions on them. Added to that, both shafts use one of the gears twice from memory, so its a bit of a thinker to sort out. VAG engines only normally rev to 6.5-7ish so not much call for them, as you can get to a 170 odd max by changing to a different box. [/quote]
Was about �5k if memory serves, so what about the Honda box? I thought the Honda box would be ideal for the Toyota and is supposed to have better ratios than the yota.
I think the issues Geary hit were with the Mk1 2bular manifold but if your not running one of those it should not be a problem.
Boothy
I’m just thinking - have we all lost the plot here ???
Another 3 - 4k to spend on gearbox for the extra 30-40bhp over standard gain when we all know that unless chargecooled the ECU will retard power at some point. This is on top of the various mods to get from a safe 260 to 300 ish. Are we looking at 4 - 8k for an extra 40 bhp - if so that sounds expensive in a non motorsport world
I’m sticking with my ‘reliable’ 260 bhp as Lotus intended, adding the additional side cooling and may stick the gearbox cooler on as a precaution for hard TD use.
If I get bored of 260 bhp I’ll sell it & buy something else, not mod my car until it’s knackered and all the standard bits start falling off.
Reliability - Isn’t that why a few people have gone to S2’s from heavily modded S1’s etc ?
Even 189 n/a,s break gearboxes Chris …
Don’t speak too soon !!!
Wise words and yes, perhaps I have lost the plot.
Trouble is, I think we all love our Loti, understand their shortcomings and want to sort them (like my son’s special needs lessons!)
So, are we back to the driving tuition arguement yet?
John, I have just been doing some reading and acording to our friends across the pond “LSD’s are hard on trannys” this could be totally incorrect but the advice seemed to be that the LSD could of had an impact on the very early failure of your box.
Advice seemed to be jubu’s should be ok for your power without the LSD and so long as you don’t shift like you stole it.
Boothy
[quote=Boothy]John, I have just been doing some reading and acording to our friends across the pond “LSD’s are hard on trannys” this could be totally incorrect but the advice seemed to be that the LSD could of had an impact on the very early failure of your box.
Advice seemed to be jubu’s should be ok for your power without the LSD and so long as you don’t shift like you stole it.
Boothy [/quote]
‘LSD’s are hard on tranny’s’ 
Just waiting for the transvestite backlash Mr Boothy
[quote=jfk]Even 189 n/a,s break gearboxes Chris …
Don’t speak too soon !!!
[/quote]
You’re right - hence I may fit the gearbox cooler solution to add some longevity to my box. Although it did survive the drive to Spa - 2days of stick (not Sean stick ) and the drive back and seems fine. JSR have checked my car over post Spa and all seems OK - gear cables crossed !!!
I did think of that but thats how it was written on lotus talk
A lot of the trouble is what is called “shock loading” violent on off power or rding the kerbs whilst on power, these are things that happen much more in racing than on track cars, I am going to be upping the power on mine or the winter as I am sure the engine has seen better days 
I managed to lunch my N/A box, rebuilt under the Lotus warranty.
My 260’s box has held up so far, 27 k @ 240 BHP and 20 k at factory 260 BHP.
As someone said above, next stop is GT3.
260 is about the limit for standard component longevity - that’s not my opinion it’s what Lotus say
If winding the boost up, changing the exhaust system & sticking some extra cooling on would work at considerably less expense don’t we think our friends in Norfolk would have taken the easy option and given us a 300 bhp ‘Special’ edition instead of the V6 ?
Just ask Ade and all the others who have gone down the 300 bhp route
To be honest I think Lotus always wing it and hope for the best, watch the forums (I know they read here) and then decide what is sensible for upgrades that have longevity.
They always said they would never run more boost, but byuy the 270 kit for the 2-11 and guess what you get a smaller pulley
[quote=ade]To be honest I think Lotus always wing it and hope for the best, watch the forums (I know they read here) and then decide what is sensible for upgrades that have longevity.
They always said they would never run more boost, but byuy the 270 kit for the 2-11 and guess what you get a smaller pulley [/quote]
Okay an extra 10 bhp but I believe some of the 2-11 owners have been having gbox issues ?
Everyone seem to be comparing different things…the gearbox problems the 190 have are generally worn syncros (non power related). The problems the 300+ bhp cars have is that 3rd gear cant take the torque and is ripping he splines off - hence the jubu upgrade.
The syncros are pretty weak and obviously can affect any exige at any power level, but they tend to go on heavily tracked cars as they are wearing them out under heavy engine breaking - my syncro went on 3-2. I dont believe there is an upgrade for this, but you can avoid the problem by simply double clutching the downshifts.
So while I am thinking about this again…
Does the gearbox need to come out to replace the clutch? Mine is still running a std clutch and I think next year if I am keeping it swapping the clutch and getting Jubu gears fitted might be a safe bet 
Yes, the gearbox need to come out for a new clutch. I went for an exedy one - although it takes the power okay, the pedal is pretty hard compared to oem and also rattles on the over-run.
So do you have any worries about your current set up with your power?
What were the problems with the Honda gearbox other than the manifold clash which I think the Lotus 4-1 geats around?
Andy
To be honest, I have no worries with the current setup. My car lasted 3 years and 20k miles at 300bhp until 3rd gear went. Having seen the jubu gear set they are more substantial. Its also not like we’ve see failures on any of the other gears on the box which are slightly thicker. Besides, if the jubu failed I’d be straight back to the manaufacturer as they claim quite a high torque figures.
Personally I would a avoid the Honda box route (not sure if they are still attempting it anyway). There were loads of problems - a very amateur conversion at best!
All being well I will be moving to a standalone ecu shortly with a 2.8" pulley which will push the current setup even more.
where to source a gearbox oil cooler?
my C64 is still fine after 19k miles on it, but i anticipate