steige 1 1 Cars Posted February 12, 2007 I'm in the process of fitting a gti-6 box to my mi engine. I got a phase 1 lift up gearstick from miles that was modified at the bottom to reduce the throw. I also have a modified L bracket that i used on my previous 5 speed box. My question is will this make the throw too short? With these fitted it doesn't have a lot of movement. Will this have any adverse effects on the gearbox. I don't have any oil in the box at the moment and it feel a bit notchy. Share this post Link to post Share on other sites
309PUG 2 1 Cars Posted February 13, 2007 I'm in the process of fitting a gti-6 box to my mi engine. I got a phase 1 lift up gearstick from miles that was modified at the bottom to reduce the throw. I also have a modified L bracket that i used on my previous 5 speed box. My question is will this make the throw too short? With these fitted it doesn't have a lot of movement. Will this have any adverse effects on the gearbox. I don't have any oil in the box at the moment and it feel a bit notchy. On my understanding you 'can' have it too short. You will beat the synchros in the box. Chris Share this post Link to post Share on other sites
welshpug 1,678 Posted February 13, 2007 it'll go CRUNCH! far sooner if the shift is too quick for the synchro's, and will wear them out prematurely. Share this post Link to post Share on other sites
steige 1 1 Cars Posted February 14, 2007 I filled the gearbox with oil but it didn't seem to make it feel any smoother. The issue now is the driveshaft oil seal is dripping smelly gearbox oil all over the garage floor, so i'll need to replace that. i think i'll leave the linkages as they are for the time being and see how it drives once the engine is a runner. Don't want to have crunchy changes though! Share this post Link to post Share on other sites
JERAM 0 Posted February 14, 2007 it'll go CRUNCH! far sooner if the shift is too quick for the synchro's, and will wear them out prematurely. that's a good one Share this post Link to post Share on other sites
jonnie205 1 Posted February 14, 2007 I would imagine it will be too short if the gearlever is modded for quick shift and you fit a modified quick shift L lever. If miles had modded you a be1 lever which is what you need then use that and fit a std L lever Share this post Link to post Share on other sites
taylorspug 7 Posted February 14, 2007 How can you 'beat' the synchros, everything is connected up via solid mechanical connections. Surely all you can do is maybe start to shift before you have properly depressed the clutch, but thats hardly the short shifts fault is it?! Share this post Link to post Share on other sites
brianthemagical 1 Posted February 14, 2007 read up on syncro's. they are 2 conicla things that equalise the speed of the gears befor the dog rings engage, beating them refers to trying to get the dog teeth to engage before the syncros have equalised the speeds of the gears. don't modern 'boxs have baulk rings to prevent beating the sycros? thats why it can be hard to change down to first prematurly. Share this post Link to post Share on other sites
JERAM 0 Posted February 14, 2007 read up on syncro's. they are 2 conicla things that equalise the speed of the gears befor the dog rings engage, beating them refers to trying to get the dog teeth to engage before the syncros have equalised the speeds of the gears. don't modern 'boxs have baulk rings to prevent beating the sycros? thats why it can be hard to change down to first prematurly. thats an even better one Share this post Link to post Share on other sites
engine killer 6 Posted February 15, 2007 i have been running a TAS quickshift lever and a modified L plate for quite some years and they are still working FINE, synchros and clutch are still alright. about a year ago i have the top part of the lever extended (about 3 inches) and shift the bolt point (longer side) on the L plate further out. now the gear knob is much closer to the steering wheel (very similar to those WTCC/BTCC) but the change gear throw travel is about the same (very short) as before (with double quick shift). Share this post Link to post Share on other sites
taylorspug 7 Posted February 15, 2007 Why do i get the impression its not me that needs to 'read up' on how gearboxes work... Share this post Link to post Share on other sites
brianthemagical 1 Posted February 20, 2007 Why do i get the impression its not me that needs to 'read up' on how gearboxes work... because you can/i can't comunicate the point properly. i do know haow gearboxs work and i didn't mean the read up thing in a malisious way. i also know that gears are permanently meshed but i'm sure you know what i ment and i think the comment about the baulk rings (i think) still stands. i feel slightly embarrased now as my comunication skills let me done and i ended up sound sounding like one of those peeps who says stuff they know nowt about (which i'm not, honest). sorry to bring this post up again, i just had to try and clear my name as it were. Share this post Link to post Share on other sites
boombang 2 Posted February 22, 2007 I drove a friends rallycar the other day and he has a short shifter on it. Now it was very quick going from 3rd to 4th say, but it seriously lacked feel. All rods are new and there is no play, but because the movement on the stick is that little it is very hard to know when it is actually in a gear or not. Share this post Link to post Share on other sites
GLPoomobile 958 Posted February 22, 2007 Well I don't know about the mechanical side, but from a practical point of view I would think that if you significantly reduced the throw you would reduce accuracy and increase the risk of engaging the wrong gear (4th instead of 2nd etc). I had a GE quick shift in my previous 205 and it was OK, but I never bothered to put one on my current 205 so it is standard, which I quite like but it could do with being a bit tighter. Anyway, I drove another 205 the other day with Autofive quick shift which was pretty short and I didn't like it at all because everytime I shifted it felt as if I hadn't fully engaged the gear. Horses for courses I guess, but yes I do believe a short shift can be too short. Share this post Link to post Share on other sites
jackherer 543 Posted February 22, 2007 I've just deleted loads of off topic posts, please stick to posts related to "Short Shift, Can a short shift be too short?" Share this post Link to post Share on other sites
