Adding TSX 6th gear to A3 tranny

[powdbyrice]

With gas at $4/gallon right now, everyone is looking for a way to get better MPG.

One option is adding a 6th gear from a TSX. Dont add the 6th gear from the RSX-S because its the same as our 5th.

Found this write up on Element Owners Club. OP added a 6th gear to his K24 Element complete with pix.
http://www.elementownersclub.com/for...ad.php?t=25635

Estimated cost of parts:

Part numbers supplied are from a 2006 Acura TSX 6MT
The identical parts could be obtained from a 2006 Civic Si 6MT, but the part numbers will be slightly different.

I recommend both of these manuals:
Helms Honda Element Manual
Helms Acura TSX Manual

- Shifter mechanism parts -
Reverse shift piece 24240-PNS-000
Shift arm interlock 24430-PNS-000 (or modify the old one)

*5-6 gearshift fork 24201-RAS-000* NOTE: In at least one CRV and possibly in some later model Elements the Reverse shift piece may be welded to the Element's 5-Reverse shift fork, instead of being attached by a pin. In this case see step 3 below.

These parts are optional. The function of these parts hasn't been determined; however the transmission functions well without them. They may be necessary for reverse safety interlock.
* MBS arm 24412-PNS-000
* MBS arm spring 24413-PNS-000
* - added by MikeQBF. }

- Main shaft parts -
Mainshaft 6th gear 23590-RAS-A00
Needle Bearing (35 x 41 x 24) 91103-RAS-003
Collar (28 x 35 x 24) 23916-PNS-000
5-6 Synchronizer Sleeve Set 23626-PNS-315

- Countershaft parts -
Special bolt 90011-PPP-000
Countershaft 6th gear 23491-RAS-000

Here is the latest from the roadtrip. This is at a steady 72mph cruise on the highway. I made two brief stops. I ran the gas down to just above the E and got 427 miles on a single tank! I filled it with 13.6 gallons to give 31.4 MPG. I can't help but think that this is awesome. I used to average 25-26mpg under the same conditions. I can't believe how well this worked.

http://www.elementownersclub.com/for...ad.php?t=45524