MattyB1983

iTrader: (51)

So I own an early STI RA, and one of the best things about the RA's is the super close ratio box. I know as well as anyone the limitations of these early boxes (I've broken a few...lol) so with my plans I will need to think of an alternative.
The eventual plan is to head north of 400 but I really don't want to lose the DCCD or super close gearing.
What are my options ??
Did the newage RA boxes have very close ratio's ??
How often do they come up as I imagine they are fairly sought after ?

banny sti

iTrader: (68)

Closest you will get is a jdm 6 speed, 70 in 6th is 3200 revs.

https://www.scoobynet.com/subaru-par...onversion.html

MattyB1983

iTrader: (51)

Did the RA's and Spec C's use that same box Banny ??

Carnut

http://www.rallispec.com/gea_syn_rst1140_t.html

banny sti

iTrader: (68)

Yep only difference being they have an additional gearbox cooler

ronjeramy

iTrader: (1)

My uk spec STI Widetrackwith dccd sits arround 3200 @70mph too.

banny sti

iTrader: (68)

Thats strange as the uk box is same 1-4 as the JDM but 5th and 6th should be longer However my reading was taken from the avcr which is super accurate the rev counter over reads by a couple of hunderd rpms on a classic, wonder if its the same on the new age cars...

ronjeramy

iTrader: (1)

If I remember on my way home tonight I'll plug my odb2 reader and see what it shows on the dash command app with proper gps speed too

MattyB1983

iTrader: (51)

I had a 2005 JDM STI through my hands a couple of years back, now I remember the gearing being 'fairly' close but nothing like a classic RA.
Is that really as close ratio as you can get in newages then ??

banny sti

iTrader: (68)

Early RA's are mad though, is it not something like a 120mph top end? Nothing on the newages even comes close to that I am afraid.

Ciaran

iTrader: (16)

5 speed PPG dog box 4.44 final drive

banny sti

iTrader: (68)

At the price I wouldnt personally but maybe what you're looking for Matty...

https://www.scoobynet.com/subaru-par...g-gearbox.html

MattyB1983

iTrader: (51)

Maybe I'll have to look down another route then.
Are PPG customisable ratio wise or are they just a set ratio ??

MattyB1983

iTrader: (51)

See I'd be happy with a PPG box but I'm not sure what they are like ratio wise.

What about having my current box hardened some how, if that's even possible.

Kwik

iTrader: (10)

It was my understanding several people have run 400 or so on the P1 box and the 754 DCCD's for some time without problems. Iirc Enginetuner have seen a few of the later boxes at that power.

joe v3sti

iTrader: (8)

Matty I was in the very same position, mine is also a v2 Sti Ra, these have the shortest ratios of the lot! I love mine but due to the power hike I had to look for other options. At the time the car was only going to be used on the road so PPG wasn't an option due to the fact that its far too noisy. So I was for a jdm 6speed. This seemed the best compromise.
If you have the original 3.9 r160 rear diff. You don't need a full conversion as you can utilise the current rear diff, shafts and hubs that you have.
There for you would only need a gearbox and propshaft making it rather cost effective. Also if you keep your rear diff it is a proper plated one.

Joe

Carnut

Final drive, does that meen at the wheels?

Ciaran

iTrader: (16)

Yes

My box spec is

- PPG 1-4 dog kit, straight cut gears.
- OE helical 5th gear
- Billet selector forks
- Cusco RS 1.5-way LSD
- Modena centre diff with straight-cut billet drop gears
- Ratios: 3.18 / 1.87 / 1.32 / 0.95 / std
- 4.44 final drive

MattyB1983

iTrader: (51)

I too ran north of 400 on a later 754 box for a while without issue but in all honesty it is a ticking time bomb.
The plan is to eventually see 450 or above and a 754 box of any descript won't last long at that.

joe v3sti

iTrader: (8)

Your options are 6speed or PPG

MattyB1983

iTrader: (51)

It'll be a while before I'm ready but it's certainly given me food for thought.

Thanks fellas

ditchmyster

iTrader: (7)

There is one other option, leave it as it is and forget about big power.

killbill

iTrader: (3)

i too have the same dilema with my v3 type R best bit a bout the car is the box ratio for me.

MattyB1983

iTrader: (51)

I know I know ditch, had that conversation with myself many times

I'm doing the car in two stages.
First stage is to get it where I want it with regard to condition, braking and handling. I'll drop this STI 8 motor in along with my fresh heads and run the car for a while. I'm almost there now, Tim is coming over this weekend to finish up so within a month or so it shall be road going again.

Stage two is to rebuild the original CDB to a decent 2.1 spec and see where it takes me.

But who knows, I may enjoy it enough at circa 320 and leave it there. I'll still rebuild the original motor and drop it in but only because I really want the car to have the same block it left the factory with.

tweaks

iTrader: (7)

No idea on top end but mine was sat at 4500 at 80 !
felt a long drive back from essex sat at that

Tim

ditchmyster

iTrader: (7)

I know what you mean about wanting more power, there were a few occasions when giving mine beans that it runs out of steam @ circa 320bhp on long straights and I started thinking I want more, but then stick a passenger in it that's never been in one, watch their reaction, (lots of squealing and swearing, deep breaths, clinging on and bracing ) then you realise we're all mental.

My advice would be keep the wheels small, not too much bracing ie roll bars and bushing and just enjoy the wayward handling, otherwise they become way too fast and planted for the road and you lose the fun factor. I don't care if mine is not the fastest thing on the road because i'm not racing, even on track I just let everyone go find some space and enjoy, strangely enough they then end up holding me up.

One thing I have noticed of late is the guys that have been there and done that all seem to be coming back to normal ish power levels, don't forget these cars are about the twisty bits.

JGlanzaV

iTrader: (3)

I have seen plenty of PPG kits break thats for sure, id go for a 6 speed all day long, they have pretty short ratios as it is and are a damn site cheaper if you dont need the rear diff and hubs etc

banny sti

iTrader: (68)

Maybe worth a punt....

http://forums.nasioc.com/forums/show....php?t=2341424

http://mooreperformanceparts.com/products/blastplates/

Fat Boy

JDM '04 6 speed fitted to my P1 has the following ratios.
As it has a fair bit of power (560+) these feel very short in practice. Great for track/twisty bits, not so good for long distance cruising, but then that's not what this car is all about.





I had a TY754 box in mine (initially the standard P1 box and centre diff and then I swapped the centre diff for a Dccd one, but kept the box itself) for many thousands of miles (circa 12K) at 450bhp/ 380ftlb and it was fine, but I don't do drag stuff or hard launches. I'm more about fast road and track.

ditchmyster

iTrader: (7)

Interesting.

Does that mean I could swap the centre diff from my Type R box onto my Blob wrx.