6 speed conversion question
 

Need a little advice guys done a search but still unsure. Want to drop a 6speed box in my bug wrx as I think it's time what I want to know is what exactly do I need? Do I need to change rear diff etc I've recently had an excedy clutch and lightweight flywheel would this have to be changed for a 6speed equivalent? Would it be better to get a box out of a newer car rather then one that's done a lot of miles?
All help appreciated

Cheers
Martin

Dead simple. If it's a UK car you get a UK pre 2004 non dccd box with a 3.54 final drive . If its a jap car you need to source a jap box with a 3.9 FD

All you need is the box, linkage, gearknob and propshaft and it will just go on inplace of your current box. No need to feck around with driveshafts hubs and brakes and everything else including your new clutch will swap over.

A DCCD box will go on but that complicates matters slightly.

If you move up to an R180 rear diff you will need to change the hubs and brakes too.

So the easiest combination. Is to just swap the box and leave your current diff in place.

enginetuner says that if you have a uk wrx, then you dont need rear diff or driveshafts. just gear linkage, propshafts and the box
correct me if im wrong

wiley

Thanks for the replies guys makes loads more sense now cars a uk wrx so finding a box from uk Sti should do the job. Now to get some prices though :-(

Martin

the clutch and flywheel are larger in the six speed fella, but the five will still work but not hold as much power.

tbh if your going to the trouble of changing the box i would fit the six speed flywheel and clutch

You will need to make sure the box comes with the stub shafts for the front drive shafts. Also make sure you get the 6 speed gearbox mount included.

You have a point tommy just a waste as the clutch n flywheel have prob done 1000 miles. So assuming I change the clutch and flywheel aswell will this handle the torque if I went for more power in the future?

Martin

Cheers mate don't know what they are lol but just dropped scott@scoobyspares a pm

Martin

the 6 speed flywheel and clutch will handle more power as its bigger.
i assume your planning more power as your buying the six speed.
the reason i would change it is the box will already be out and it saves stripping down again in the future and paying more labour, thats assuming your not doing it yourself.

Cheers tommy no not doing it myself and now I've decided to keep the car I'm going to start with the 6speed before the engine. Makes sense in the long run to cut my losses and change the clutch aswell. Thanks for your help mate

Martin

Ps will be in touch again re details for that roof flap 😉

no problem fella, you could always sell on the old clutch and flywheel as it wont be too worn anyway.

not sure if anyones mentioned it above but i think you will need a six speed starter motor too

No mate no mention of that. Defo will go with a 6 speed clutch I think as no point paying twice for labour. Waiting for a reply from Scott to see what kind of money were talking. How much generally is a conversion mate to a 6speed box

Martin

Ok guys bumping this up as the times here sooner then I thought. So what I need is

6speed box
Linkage
Gear knob
Prop shaft
Cradle

What are the front stub mounts? Do I need anything else?

I assume I keep the same rear diff and drive shafts, correct?

Help appreciated again guys

Martin

Lots of people over complicating this.All you need is:

UK pre 2005 non DCCD box,
six speed prop or one from an Auto wrx
Gear linkage
Cradle
gear knob.

That's it. It will mate with your current rear diff and the axle stubshafts are for the later boxes.

I've done this countless times, thats all you need!

Great mate thanks very much think I've got my head around it now.

Martin

My 5 speed AP organic clutch and flywheel has coped fine with 450bhp for over 20K miles now - first in my 5 speed box and for the last 10k miles of the 20k in a 6 speed dccd box. Don't do drag strip stuff though.

I'm running the same clutch with a Fidanza flywheel using a JDM 6 speed at 440 BHP with no issues. RCM told me this would be fine as long as I stayed away from the drag strip where I would need a twin plate anyway.

Hopefully should have a jdm 6speed dropped in soon staying on the 5speed pink box for now with it. How do you rate the jdm 6speed box mate?

Martin

Love the JDM 6 speed the lower ratios in 5th & 6th make the car feel really responsive through all gears with the peace of mind of knowing it can take a good thrashing unlike the more fragile 5 speed.

Havnt drove either uk or jdm 6speed mate. Don't track the car it's just fast road so if its fast acceleration on the jdm box it'd suit me I think

Martin

If you're going jdm you'll need a different rear diff if yours is a uk wrx.

Yep sorted mate getting the full set up

Martin

5 speed pink is the same size as 6 speed it shows 10mm difference but out of box is the same. good to 400bhp or even more:thumb:

Thanks mate for the heads up in that case ill stick with it I've done 2k miles on it since new and no hurry to get it over 400. Well yet lol

Martin

Daz your not 100% correct not all 6 speed rear prop flanges will mate with the round flange on the R160 diff. An example of this is a hawkeye prop it has a much wider hole centre to hole centre pitch which is to big to redrill the diff disc.I am not just talking about pcd redrilling but physical size. I had this when trying to fit a hawkeye prop to my R180 pre hawkeye R180 diff. In the end I had a new universal joint of the right size for my diff fitted to the prop.

some info here

https://www.scoobynet.com/714409-hil...tually-10.html