ZXSpectrum Posted April 24, 2003 Share Posted April 24, 2003 A friend of mine has bought a nice Supra but its an Auto... No problems, but he is looking to make it a bit more special and was contemplating a Auto to Manual Conversion... We was wondering how much a Hollinger/OS Geiken Or simalar Clutchless sequential box would cost with and without labour... Any of the bigger tuners here able to shine anything on this...? Quote Link to comment Share on other sites More sharing options...
Adam W Posted April 24, 2003 Share Posted April 24, 2003 The skyline board is your best bet for info about this sort of thing, plenty of discussion on there about aftermarket gearboxes. Many thousands of pounds though Quote Link to comment Share on other sites More sharing options...
Terminator Posted April 24, 2003 Share Posted April 24, 2003 There have been any discussions about doing an auto to manual box change, most stop as the costs are very high due to all the changes required. Better to sell the car and buy a manual box IMHO, general consensus among those who have driven both is that there is not much in it between the two. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted April 24, 2003 Share Posted April 24, 2003 Off the top of my head £10,000 or more. And by clutchless I assume you mean a power-shift system. Hewland do a race spec one at about £11,000 so add another 3K or 4K. IMHO a dream-world. Quote Link to comment Share on other sites More sharing options...
ZXSpectrum Posted April 25, 2003 Author Share Posted April 25, 2003 Hummmmm.... Interesting... Dream world... Maybe... For me.. Watch this space.. Quote Link to comment Share on other sites More sharing options...
jimgill Posted May 7, 2003 Share Posted May 7, 2003 Hi folks, thanks to ZX for the prelim approach. I am interested in replacing the auto box in the project Supra with a clutchless sequential box. I know they are around £6-£8k for a R34 Skyline so there must be someone out there that can fit me one for under £10k? As far as I'm aware no one has done this yet but if someone has please get in touch with me and swap some tips and contacts? Hope you are all looking forward to the magazine, out at JAE if all goes to plan and you can collect your copy from from ZX or me at the 200+ club stand FOR FREE!! See ya'll soon, Jim Quote Link to comment Share on other sites More sharing options...
Gordon F Posted May 7, 2003 Share Posted May 7, 2003 Jim Could you please explain the difference between a clutchless sequential box and an auto box. Quote Link to comment Share on other sites More sharing options...
jimgill Posted May 7, 2003 Share Posted May 7, 2003 I'll try The standard auto-box is a 4speed semi with the 4th gear being overdrive (I think). You can leave it in drive and never move the lever if you so wished... With the sequential you would have to start in 1st and work your way up and down with a flick of the lever upwards to upchange and downwards to downchange. (seen BTCC or Rally's?) Most of these gearboxes are also 6 or 7 speed. Unfortunately do not know how they work so the clutchless bit is a mystery at the moment. Hope that helps Or you're as confused as I am? hehe Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted May 7, 2003 Share Posted May 7, 2003 If you are thinking along the lines of the WRC gearboxes, here's a few useful numbers. The box used on the Peugeot 206 WRC is the single most expensive component on the car. I can't remember if it is £30K or £60K, but it's more than a Supra. The more conventional type of sequential transmission uses what is termed "power-shifting". This is changing up without the clutch while killing or retiming the ignition to dip the power at the point the gear changes. This takes the load off the gear selector mechanism. On a normal dog type gearbox (as opposed to a synchromesh one) you can perform clutchless up-changes by momentarily lifting off the throttle while changing gear. This also relies on the ratios being very close so the gears are rotating at relatively close speeds. This type of transmission is totally unsuited to road driving. Quote Link to comment Share on other sites More sharing options...
Gordon F Posted May 7, 2003 Share Posted May 7, 2003 Yep -still confused F1, BTCC and Rally cars are all sequential boxes, but all also use clutches - in the case of F1 cars, hand operated by a paddle on the steering wheel. Quote Link to comment Share on other sites More sharing options...
Alex Posted May 7, 2003 Share Posted May 7, 2003 The hollinger box' uses a clutch and powershifting....you won't get a fully clutch pedal-less system on the market. Quote Link to comment Share on other sites More sharing options...
jimgill Posted May 7, 2003 Share Posted May 7, 2003 Cheers John, seems most people probably give up on this idea as the support is soooo optimistic. I wasn't suggesting a works spec Rally gearbox btw. Just a pointer as to the idea that's all. I don't know the technical issues at this stage but, as I said, if you can get one for the Skyline circa £8k (and my friend Ged has one fitted and uses his car almost daily on the roads) then there MUST be someone that can sort out one for a Supra? Surely? Ah well, it was worth a try eh? Quote Link to comment Share on other sites More sharing options...
jimgill Posted May 7, 2003 Share Posted May 7, 2003 "The hollinger box' uses a clutch and powershifting....you won't get a fully clutch pedal-less system on the market." Aha, that will do!! Where and how much Alex? The clutchless thing was simply a "best choice" thing but seems there aren't many choices.. Cheer mate. Quote Link to comment Share on other sites More sharing options...
Alex Posted May 7, 2003 Share Posted May 7, 2003 Yeah it can be done...just making sure you are aware how it works. GT-ART and Abbey are your best bet to start with...they've fitted the boxes and know the systems. I know that GT-ART have looked at Supra's before and no doubt so have Abbey. If you do it and get it to work well then please post the instructions.... Also try http://www.supraforums.com and see if anyone over there can help. Leon Green (JPS motorsport) and Chris Wilson are 2 of our most respected tuners. I would have thought that if the financial backing is there then they could sort it out for you. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted May 7, 2003 Share Posted May 7, 2003 It won't really make the car any faster. If you're a quarter mile fan, which I'm not, you'd be better practising your starts to improve your reaction time. If you just want to do it for the hell of it, good luck and why not. Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted May 7, 2003 Share Posted May 7, 2003 you won't get a fully clutch pedal-less system The reason F1 went to two pedals was to make the car narrower at the front - not an issue with a Supra:) Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted May 8, 2003 Share Posted May 8, 2003 The closest thing i have seen to what you are after is this twin mode clutch system from Zigen. http://www.takakaira.com/performance/main.asp?maker=13&image=zigen&name=5%20Zigen Quote Link to comment Share on other sites More sharing options...
Thor Posted May 8, 2003 Share Posted May 8, 2003 Guys I looked into this a while back. Hollinger do make one for the Supra it's basically the skyline box with a different Bellhousing. The reason I went off the idea was noise, easy of use, & the fact the Hollinger quoted me 550 bhp as the limit of the box. From memory it was £6000 + Shipping etc. Good luck, & if you do it, then I would love to try it. Quote Link to comment Share on other sites More sharing options...
Adam W Posted May 8, 2003 Share Posted May 8, 2003 Skylines pop gearboxes/transfer boxes, Supras don't. Hence, nobody bothers fitting a clunky racebox! (Even more clunky than the standard box ) Quote Link to comment Share on other sites More sharing options...
Need4Speed Posted May 8, 2003 Share Posted May 8, 2003 Race gearboxes are designed for fast shifts at max revs and are very noisy (they use straight-cut gears). They are usually designed for quick changes of ratios, but have a very short life between rebuilds - maybe as little as 1000 miles or less. Not a lot of use on the road. Quote Link to comment Share on other sites More sharing options...
jimgill Posted May 8, 2003 Share Posted May 8, 2003 All good stuff, thanks guys. main reason for looking into this was to try and utilise the existing car which is automatic as something new to try instead of starting with a 6 speed standard box/car. £6k sounds about right but the Skyline box was the choice of big tuned cars so the hp limit surprises me at 550? Will check with the boys at Abbey and post my findings. Thanks again all. ps. You are right, they are FLIPPIN' noisy!!!!! Quote Link to comment Share on other sites More sharing options...
Roy Posted May 8, 2003 Share Posted May 8, 2003 what about a modified/stronger torque converter as an option ? there was some discussion a while ago on this board about this and i'm sure someone will be along shortly to clarify. see here : http://www.levelten.com/store/index.htm hope this helps mate. Quote Link to comment Share on other sites More sharing options...
Chase Posted May 9, 2003 Share Posted May 9, 2003 Am I missing something here or is this what the tiptronic box is on the vvti's? Quote Link to comment Share on other sites More sharing options...
Thor Posted May 9, 2003 Share Posted May 9, 2003 Tiptronic is just the auto box with trick electronics that allows steering wheel mounted gear changes. Same number of gears as an auto. Pretty impressive though. Quote Link to comment Share on other sites More sharing options...
Syed Shah Posted May 9, 2003 Share Posted May 9, 2003 Why not stay with the auto and get a SP400? Quote Link to comment Share on other sites More sharing options...
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