according to the chart api is wrong and the uk 98 is 4.111

A UK Forester turbo has 4.444 front diff and 4.111 rear.

So how does that work then?

4.444 front 4.111 rear and 1.1:1 drops makes a multiplier of 4.522 for the rear diff [ 4.111 x 1.1 ] Nowhere near enough to avoid transmission wind up.

If you go 4.111 x 1.08:1 it comes to 4.439 nearly 4.44 I agree and it may just get away with it. But after 9 years of Subaru transmission building we have never seen the set up you mention.

David

PS perhaps my original remark should have qualified it as being Impreza turbo transmissions - as you could argue that " all UK transmissions " allows in a discussion over Justy transmissions etc etc etc.

Quote:

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Thats incorrect information.

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If we are talking about UK or Jap Impreza the information is exactly correct.
I have only worked on a few Forresters but until I see an actual diff with a different ratio and drop gear I don't believe there are any diff ratios other than 3.545, 3.9, 4.11 and 4.44.
If you have a Subaru document with alternative information that would be VERY interesting.

Well thats what Subaru themselves quote ;)

P.S

I know how to do sums thanks :D

I know that you are on top of the maths, I am trying to simplify it for other readers of this thread, who struggle to understand what and why.

David

Copy out the relevant information because it will be helpful.
Either it is a typo or there is a lot of potential for people like David and myself to screw up big time. In years of working on Subaru transmissions I have only ever seen 1.0: 1 and 1.1 : 1 drop gears.

Not being funny but businesses dont seem to do many favours for the normal man in the street. I'm sure they can do there own research and spend some of there hard earned figuring it out.

Stu.

What a stinking attitude. I post on here to try to help people.

I do plenty people favours, selflessly and put time in to helping others to ensure they do not waste money or cause themselves problems needlessly but your attitude stinks.
There is no way you can run a car with 4.44 diffs at one end and 4.11 at the other and if you know different come up with irrefutable evidence or stop posting crap.

Stu That's a bit of a cheap shot !.

I think you'll find that Harvey and I are two of the most helpful people [ businesses ] on Scoobynet.

Disappointed of Warwickshire.

No not a stinking attitude, just dont want people to use my knowledge for there own personal gain.

Many times i've helped people who bother to PM me, I'm just not bothered about helping businesses.

If your talking attitude try dealing with API................

Forrester workshop manual states for uk turbo cars 4.444 front diff 4.111 rear diff 1.081drop gears.

l'll look into that Gc8Andy - thanks - seeing as "172" has gone all precious..........

I see what you are saying Andy and while I don't doubt you have read that I have not come across such a setup and find it hard to believe. Unless the drop gears are 25/27 it won't be possible but I will look in to it further.

I think that's a very unfortunate attitude and if everybody adopted it the development of the Subaru marque would still be stagnated back in the days when 380 bhp was a really top power car and if you wanted any more you had to have a closed deck block.
I share my knowledge with others and learn from them too.

If you don't want people to gain from your knowledge why post on here in the first place? Rather hypocritical isn't it ? Everybody can read your post just as you can read everybody else's post. I would like to think I have contributed more than most to developing power and reliability out of Subarus and hope to continue doing so. Fortunately not everybody adopts your selfish attitude if you actually do know more than you say.

172,

Knowledge is received wisdom. Someone told you. If knowledge is not passed on from one to another, we'd all still be sitting naked in caves, trying to figure out how to keep warm.

Sure you went looking for the answer and got the info you needed. BUT, someone told you, no matter where or how you got it, someone told you.

David APi

what needs to be done to help persons.

make a sticky, like one of them sites. i get loads of help from tuners/builder off here.
as i think what most poeple want to know, is the box codes for the car years & what diff they take, ie: 4.44/4.11/3.9
most persons who sorce boxes, want to match the box to a diff

its all good knowing whats in there. but putting the right diff for that box is more helpfull
get one of the charts, & edit whats wrong.
and put as a sticky. this could save threads & fall outs in the end

Just had a conversation with our local Subaru dealer - who in fairness, is one of the better ones for sensible dealings and good mecchies.

I asked about the Forester turbo gear ratios thing and his words were :

" That doesn't sound right ! "

He is not aware of the 4.4 / 4.1 thing and admits that the way that Subaru parts lists works he is unable to confirm one way or the other as they do not appear to advise what the ratio is in the parts list.

SO, unless 172sport is prepared to put up and give us all some hints, I am unable to confirm one way or the other. SO FAR.

David APi

Buy one and prove me wrong easy. :thumb:

How sad.

:notworthy
That is very well put actually - that's very true... of everything in life really.

I ended up buying another box with a matching diff and I'm told that my car now drives again although I haven't actually been to see it....:eek:

Have been looking at shop manual again seems odd ball diffs/drop gears fitted to 2001 onwards cars if gearbox fitted with oil pump.Will dig deeper!
Andy.

ps i wonder if shafts are pressure fed or is pump just for oil cooler?

We've had the Forester type boxes in here with the oil pump on the tail housing. It is nothing special just a means of circulating the oil more efficiently. It could feed an oil cooler, but I've never seen one fitted.

Those boxes were TY755 or 753 type and had the regular 1.1:1 drops fitted, so 3.9 front 3.545 rear.

David APi

What an arse hole approach to things. Everyone comes on here to help each other and many a tuner comes on here and gives up their time and shares their knowledge for the benefit of the rest of us.

172 your attitude absolutely sucks. I used to think you were one of the good guys on here and have ready many of your posts and they have indeed helped me in the past.
But this makes you out to be a proper w*nker.
If everyone had that sh*t attitude this site just wouldn't be the resource it is today.

To be honest fella you should be completely and utterly ashamed of yourself. Judging by your above posts though it would appear you're too arrogant to give a toss.

A Helpful Scoobynetter has now sent me details of the 01 and 03 on, turbo, European Foresters and they do indeed appear to have 4.111 + 4.444 and 1.08:1 drop gears.

So we'll look out for those.

' 172 ' was correct - just didn't want to help I guess.

Ah well !

Thanks Mr Helpful, now we are better informed.

David APi

Maybe if you had all the facts you would realise why I'm not interested in helping API, But hey its easy to jump on the hate bandwagon.........!

I would and will help anyone if I can, as many on here could vouch, but sadly that doesnt extend to people who piss me off. (API)

Then that just shows you're being bloody minded and petty.
As for me knowing the facts what's not to know?
You've spat your dummy out with API for whatever irrelivent reason. That's neither here nor there. It just sucks that you feel the need to not share information that's useful to others because of an issue with API

Thankfully, the information required has been confirmed by another source.

To be honest it makes no odds to me but I think you've made yourself look a tool for very little reason.

Each to their own I guess

David : Quite a revelation!!! Thanks. Do you have any transmission codes relevant to this weird set up which I assume is on a limited number of Forresters?
Thanks to everyone who helped increase our knowledge.
I agree entirely Daz and it is a pity 172 would not help everyone just to get at API for some historic issue.

I genuinely have no idea what the deal is with ' 172 ' as the scoobynet handle hides the actual customer name on our invoices. Anyway, no matter, let's move on.

The helpful guy to which we are all indebted has now added the ID codes.

The box in question is TY755 XF3AA with 4.444 front; 1.08 drops and 4.111 rear. Rear diff is viscous lsd and R160 size. Now XF may well be a push clutch before you all rush off out to try and buy one, but we have transferred 755 parts into a 754 or 753 in the past, so the internals may well be an OK swap regardless of clutch type.

The cars in question are 01 - 03 - 04 > UK / Euro Forester turbos.

Got there in the end with help from outside.

David APi

I've just bought a job lot with an 06 WRX 5 Speed with push clutch, it's no bloody good to me either. I thought about having a PPG kit put in it and keeping with the push clutch.
But decided against it. I can't sell the bugger on for some reason which is a shame as the box is sweet as a nut.