WRX Transaxle

saker cars use a similar arraingement with a 2wd subi box of some sort.

how do you plan to get around the centre diff?

I was also thinkin about this arraingment as on paper the torque rating is higher than that of a G50, and performance parts are available. I asume that the araingement is similar to the porsche 4wd boxes, in that the output shaft to the WRX front diff runs through the centre of a standard hollow output shaft, when comparing it to most other transaxles.

could a quick change style rear adaptor be made up. maybe the parts or design already exist in the dual range subi boxes ?
 

Bill Hara

Old Hand
GT40s Supporter
There is a guy here in Melbourne that is putting an RF together with a highly modified WRX transaxle. It is the 6 speed unit and looked quite beefy. Don't know mych detail and I only caught a glimpse of it but I'm told it is the bees knees....
 
The Saker conversion uses a fairly simple kit of an inner/outer splined part that completely replaces the center diff - converting the box to FWD only. It also replaces the tailhousing with a flat plate, shortening the trans quite a bit. It's for the 5-speed AWD trans only though.
The biggest difficulty at this stage is getting CV/axle adapters made and brewing up your own shifter mechanism.

Seems like a nice way to go for a Suby powered car, you keep the stock clutch, no adapters, etc. There are also beefier gear sets available, up to full dog box setups, and LSD prices are cheap compared to Porsche trannys!

Jeff
 
On the strength issue:- The variants of the 5 speed are glass, simple - much too weak.
The 6 speed is a completely different animal and I doubt would present a problem for most users. I have a track WRX with around 600 bhp and plenty of torque (big turbo' makes big torque) and the box just keeps on keeping on. Not only that but it is a delight to use.
The traction of AWD on race tyres and the reasonably heavy car make for a lot of strain on the 'box but it copes well. Only problem I've had so far is dog wear.

There are ways of converting to 2wd. Measurements - I have no idea atm.

The ratios (diff' and 'box) might make some here cringe - I've seen a lot of comments here regarding top speeds and rev's/cruising so I guess there's a need for tall ratios. In Tasmania that is all a bit pointless.

Tim.
 
Roaldin

Short ratios may be an issue in Tassie, but when maps of your state bring a smile to the face of the most dour observer and the roads are so enjoyable, surely things aren't that bad....


Incidentally, while you're all googling "Map of Tasmania", if you stumble across a kit shortening a WRX box and converting it to 2wd, please post it here!
 
I just meant that there are lots of hills and corners - straight bits are well er monitored shall we say... so tall ratios aren't necessary and short ones are fun. :)

Tim
 
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