This is more for information than anything else, in case it is useful to other 4 speed type 2 gearbox owners.
I've got two gripes with my 4 speed box; the revs/noise/mpg issue at motorway speeds and the huge, sloppy 'H' pattern of the gearchange. I have made sure the remote linkage was up to scratch, but in the end decided the only way to sort this was with a 5 speed conversion. So I've bought a type 9 xr4i box, rs2000 ally bell housing, lightened flywheel, etc intending to do a winter swap.
However, after a longish blat a couple of weekends ago, I had second thoughts and decided to have another go at sorting out the gearchange feel. Found a spare gearstick on ebay that came with half of an unknown quick shift kit, and the rest (mainly a spacer) was fabricated based on kit instructions I found on the web. I bought the second gearstick because you have to grind away part of the locating fork, and if it went wrong I had a back-out plan!
Its now fitted and it has made a massive difference to the gearchange - a much tighter 'H' in both axis, and a precise feel to it. The word 'snickable' springs to mind. Not sure why though!
My 'standard' gearchange before was approx 10cm throw from 1st to 2nd, and about 6 cm across the gate. With the new setup, the throw is now approx 4cm from 1st to 2nd, and about 3.5 cm across the gate.
There is a note of caution though - it is stiff. This could be a combination of factors - the new gearstick and ball was much tighter than the old one, obviously the pivot point has changed to give less leverage and finally the spacer I made up may not be exactly the correct length. I'll run it for a few days and then take it out to check its not obviously fouling on anything. So at the moment I would say I have a short shift rather than a quick one! Also I'm not sure if these kits place undue strain on the gear change mechanism, but the improvement is such I'll worry about that later.
There is more fettling to do, but this shop does two (road and competition) quick shift kits for the type 2, and now I'm happy the improvement is worth it I'm tempted to replace my unknown half bought / half built one with a one of theirs.
Very uncertain now, as whether I should do the 5 speed swap at all.