Well I'd like stamplicker to show me where he gets his specs from because your supposition flies in the face of what automotive manufacturers usually do .
In the L Series range there are only two gearsets and from genuine WSMs they were never interchanged as in ALL the ratios were different except the common 1st and reverse .
One of the most significant things in this style of indirect gearbox is the 4th gear ratio .
It is a common thing for direct gearboxes (ie front engine RWD drivelines) to have a direct or 1 to 1 4th gear .
It is also very common for indirect gearboxes to have an under or overdrive ratio in 4th gear .
With Subie L indirect boxes the close ratio gearset has a 1.088 to 1 4th (underdrive) and the wide set a 0.972 4th (overdrive) .
Now blind freddy can see that it would be stupid to have the wide or turbo ratios 1st to 4th and then the shorter 5th gear pair . You're talking about a ratio difference of 0.972 and 0.871 or 0.101 .
The normal difference 4th 5th is 0.217 or 0.192 for the close and wide sets .
Personally I think a rev drop of ~ 200-250rpm 4th 5th would be virtually useless . I strongly suggest you drive your car and note the rev drop when you change from 4th to 5th gears , if it's more like 450-500 then you don't have the turbo ratios 1st to 4th and the shorter 0.871 5th gear pair .
If for some strange reason your 4-5 rev drop is 4-500 and you do in fact have the 0.871 5th ratio then you must have the close short gearset because there is no other logical explanation .
Liberty/Legacy gearboxes are different in that there are some versions with the close/short gear ratios 1st to 4th (3.545-1.088) and the taller 0.780 5th gear pair . It's not mentioned in the factory WSM (1992) but I have seen it mentioned in later 90's era Lib WSMs .
Where the Lib/Leg cars score is the 14 or 15 inch wheels and thats why the diff ratio went back to 3.9 or 4.111 , it screws you up using these boxes in an L or MY with 13 inch wheels but at least you can see why .
The logical fix is to find a way to fit the same diameter wheels to the L or MY , at least you got the XT6 (wheels) Stateside where all we have is a rare sprinkling of Pug wheels .
A .
quick gearing question
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brumbyrunner
- General Member
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Stamplicker can't show you anything because, as you know doubt noticed when you read his post, he was quoting me.discopotato03 wrote:Well I'd like stamplicker to show me where he gets his specs from because your supposition flies in the face of what automotive manufacturers usually do
I don't normally post in threads where you're going off on odd tangents, however, Subaru may very well "fly in the face of what automotive manufacturers usually do" but really, who cares?
Settlement Creek Racing
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discopotato03
- Senior Member
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- Joined: Sun Mar 18, 2007 9:29 am
- Location: Sydney
Look there are a limited number of paths you people can take with these old Subarus transmission wise so it pays to know what they offered in various models .
There are hybrid combinations that can be built but most (not all) draw the line and having components such as gears made or pinion gears changed on pinion shafts .
I'd like anyone to show me factory literature of a L Series RX Turbo 5MT that has anything but the turbo ratio gearset and the 3.7 final drive ratio .
I KNOW what the close ratio set and 3.7 final drives and std 13" wheels/tyres drives like because I drive that combination most days .
To me it's very obvious that a manufacture would not sell this to the buying public because most people wouldn't like it for general purpose use .
These are middle 80s era cars with 80s era thinking , the same thinking edged over into the early Liberty RS Turbos and not surprisingly they get the wider of two gearsets as well - guess what - THE exact same gear ratios as RX Turbos get except the final drive ratio - shorter to suit larger diameter wheels/tyres .
Manufacturers are creatures of habit , they do things to appeal to the widest audience at the lowest possible production and marketing cost . They are businesses and seek to make money which is why they often spread RD and componentry over many model ranges .
So I rpt again - show me the OEM specs .
There are hybrid combinations that can be built but most (not all) draw the line and having components such as gears made or pinion gears changed on pinion shafts .
I'd like anyone to show me factory literature of a L Series RX Turbo 5MT that has anything but the turbo ratio gearset and the 3.7 final drive ratio .
I KNOW what the close ratio set and 3.7 final drives and std 13" wheels/tyres drives like because I drive that combination most days .
To me it's very obvious that a manufacture would not sell this to the buying public because most people wouldn't like it for general purpose use .
These are middle 80s era cars with 80s era thinking , the same thinking edged over into the early Liberty RS Turbos and not surprisingly they get the wider of two gearsets as well - guess what - THE exact same gear ratios as RX Turbos get except the final drive ratio - shorter to suit larger diameter wheels/tyres .
Manufacturers are creatures of habit , they do things to appeal to the widest audience at the lowest possible production and marketing cost . They are businesses and seek to make money which is why they often spread RD and componentry over many model ranges .
So I rpt again - show me the OEM specs .