richieh

hi all
ive got a legacy turbo estate
trouble is its geared for about 180 at redline
i was wondering if a different box/final drive
eg import would drop the gearing a touch for a
bit more accelleration/towing power and how much else would need to be altered
cheers for any help
richie

911

Why don't you consider fitting lower profile tyres? The change in rolling diameter will make a big difference. Cheaper, and a lot less work.
Graham.

UkLegacyT

ive got a legacy, got an RA impreza gearbox and rear diff.

does 125mph at the redline, and is close ratio, makes a huge difference to acceleration!

80mph is about 4000rpm on motorway

ian

UkLegacyT

what part of wales are you in?

Turbo_Steve

UKLegacyT.....I bet your car drinks fuel!

I've got a UK Leg T too, 94 spec, and it tops out at 140mph. I think that's an aerodynamic limit, tbh, though that is only an assumption.

There's about 1500-2000rpms to go at that speed.

UkLegacyT

its back to standard bar the bottom end, and at 80 on the motorway i get 26mpg @ constant 4000rpm ish.

ian

do 650-700miles a week now though, eeks!

pugoetru

My legacy tops out at about 140 as well but not at moment need new clutch !!

richieh

based in south wales pencoed
got 2 estate turbos
was anything much else needed for the box and diff swap?
like the sound of that
richie

NutterKam

I've had both import and UK Legacy estates. The gearing is the same on both. Ian, that's pretty amazing mpg for that kind of rpm at 80. How much of a nightmare was the gearbox/diff swap? Did you replace the internals of the box or the whole thing which has different matings and associated probs?....

UkLegacyT

i got hold of the complete box, along with the rear diff.

box fits straight in, whilst the rear diff just requires a few swaps with external legacy diff parts:
1) the flange at the front of the diff where the propshaft bolts to, this is because the central alignment recess is a slightly different diameter on each. to swap, just undo the big nut (easier if slackened on car with driveshafts still on, cos its VERY tight, then pull the flange off (need hub puller probably).
2) the diff backplate, cos the studs that bolt to the rear cross member are longer on legacy. undo bolts, swaps plates, easy.

ian

p.s. yeah mpg is good really, bottom end is lightened flywheel, cossie pistons etc. heads are fully ported, pipercross induction. back to standard apart from those bits though. standard exhaust is on, but ive removed the cats.

Leg@cy

iTrader: (2)

Richie,

Geared for 180 What???? mph???

You going to Llandow on saturday????

Would like to see you estate do the 0-60 run....

I might have a go??

richieh

whats at llandow on sat
its about 4 miles from me
i could bring my new one
cost me £300 on a j plate
or the wifes on an l
can u mail me more details or direct me to the post
cheers richie richie@richieszone.fsnet.co.uk

Leg@cy

iTrader: (2)

Richie,

checkout the wales forum......

There's a few things goping on down there..... all explained in the wales forum.....

Check it out..... I'm only up the road in caerphilly

Let me know and we can talk 'Legacy'...

..... while they all talk impreza........ ah ... refreshing change!!

richieh

just checked it out
i'll be there(from early if i can)
its so close i could take both legacys
and my cbr600 if they let me
white j plate estate
browny grey l plate estate
cbr 600 h plate(fm)
richie

BarkingMad

UkLegacyT,
What diff's are you running?
Cheers, Alex.

UkLegacyT

Alex,

i bought the gearbox (containing front and centre diffs), and also the rear diff from the same car, an RA close ratio model.
i believe the diffs are 4.44 ratio on these.

standard legacy turbo front diff is 3.9 and rear is about 3.545 with a 1.1:1 ratio inside the box to compensate.

ian