Relatively cost-effective SEQUENTIAL transmission

[Morpheus XIII]

Ikeya Formula has designed a shifter add-on for S13/S14 Silvias, which converts your standard manual shiftgate into a forward/backward shift-setup. The unit is basically a non-electric, non-hydraulic, mechanically geared device which simply converts the shift knob's fore and aft movements into the regular |-|-| pattern underneath, where it is connected to the transmission. The clutch is still used for all shifting. I doubt it can shift much faster than a regular transmission equipped with a short-throw shifter, but at least it eliminates missed shifts. It would probably be most effective in road racing, but will likely be a pain in the rear for street cars, being that it doesn't seem capable of entering neutral from high gears without pushing the stick several times (it has a R-N-1-2-3-4-5 pattern). Also, engaging reverse requires disengaging a safety which looks a bit cumbersome. Something else to note is that the contraption extends upwards from the transmission tunnel, so looks a little hideous--also a sign that it's really made for the track. Interestingly, my biggest complaint is also its best selling point--the price. Close to a $1000 pricetag, it's a real bargain when compared to entire sequential transmissions. But at the same time, the small unit comprised of simple moving parts and a small gear meter doesn't seem worth all that money. I guess what you really are paying for is R&D. They've made it for some Skylines as well, and a few more applications are on the way. I suppose it would work for 240SXs outfitted with SR20DETs.



Click the link at the top for detailed information, thankfully, in English.

[J SPEC SilEighty]

I think it's pretty cool, but it would become a pain on the street. also like you said, I don't know how you would enter neutral from higher gears quickly unless it has some mechanism or something on it that lets you quickly drop it back down to neutral
Overall I think it's pretty nice but I'd rather stay with my conventional shifter

[NSX-R-SSJ20K]

cheap and chearful i don't think that thing would last a real sequential shift would be better naturally but as a substitue it cant be that bad!

I prefer normal gearbox anyways - just get a short shift kit

[Morpheus XIII]

PRECISELY how I feel.