the breakdown is this; they sent me alot of information, but I'll be brief about it and include the photos they sent as well.
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Our ratios are as follows stock:
GEARBOX OVER ALL
RATIO RATIO RPM DROP K.P.H.
1ST 3.545 13.826 59.68
2ND 2.100 8.190 2853 100.74
3RD 1.366 5.327 2447 154.87
4TH 0.927 3.615 2250 228.22
5TH 0.738 2.878 1427 286.66
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INPUT OUTPUT TOTAL GEARBOX OVER ALL
SHAFT SHAFT TEETH RATIO RATIO RPM DROP K.P.H.
1ST 12 38 50 3.167 12.350 66.81
2ND 14 28 42 2.000 7.800 2579 105.78
3RD 19 26 45 1.368 5.337 2211 154.60
4TH 23 23 46 1.000 3.900 1885 211.56
5TH 26 20 46 0.769 3.000 1615 275.02
The assembly is straight forward, but it does require some modification of the 1/2nd and 5/rev selector rods; it requires the original breaings, nuts, washers, shims, etc; so they can be in good used condition or new (I bet you'll find they're expensive new, if not impossible to find)
it does require the single piece 5th gear bearing sleeve (Subaru PN 32297 AA020) and the double tapered roller bearings on the input shaft (Subaru PN 80632 5100) so if your box doesn't have them, you need them (I think all of ours do)
Onward with the goddies: all of the selector forks are included, they're forged aluminum to prevent breakage; there's a shifter interlock included to prevent getting the selectors getting stuck on a gear.
they offer a wide ratio of gears, but the tallest first they offer is a 3.17:1 - this should help with our drop from 1st to 2nd gear.
You've seen the big photo around; so here it is again:We currently manufacture a complete 5 speed dog change, spur gear kit for the version 4, 5 and 6 WRX. It features gears that are, on average, 40% wider than standard (and so, at least 40%stronger). This is possible only because the dog arrangement is much more compact than the synchro’s and so the gear width can be increased. We have a special dog design that allows larger increases than can normally be achieved.
The kit is a direct replacement of almost all the standard gearbox internals, with no modification made to the gearbox case in most instances, with the exception of some of the later versions.
We replace the input shaft and output shaft and all the fixed gears are splined onto the output shaft (no weak Subaru keys to break). All the dog gears rotate on needle bearings (this is not the case in the stock gearbox). We also supply new, high strength selector forks to replace the weak aluminium Subaru ones, and an additional interlock, which makes it impossible to get the gearbox jammed in gear. This is a common problem with other Subaru dog change kits.
You can either send us your gearbox and we will assemble all the components into it and return it to you, or we can send the kit to you and you can assemble it yourself. Full instructions are available. If we assemble it – an additional charge applies.
A wide range of gear ratios are available, making the gearbox suitable for circuit racing, rallying, or drag racing, and we can assist customers with ratio selection for their needs, if required.
Before we can supply a kit to a customer, we will also require the serial number of the gearbox the kit will be fitted to, as the reverse idler gears vary from one gearbox type to another.
and some more:
The price for this beautiful piece of machinery is $7,259.90 at the current exchange rate - it can go up and go down depending on the value of the dollar. GST tax isn't included (about 10%; same as canada)
If you ship your gearbox to them, they can install it for you for a fee, but I didn't inquire as to the fee - I figure shipping a gearbox across the world twice would be expensive.
I was informed by my contact there that they would be willing to offer a discounted gearbox in the event that a group of people get together to buy several boxes with the same ratios in them.
