I would like to know if anyone has adapted a T25 5 speed gearbox onto a 74 (late) Baywindow, if it's possible and what is involved.
Pictures are worth a thousand words ............pls
Adapt T25 gearbox onto a 74 Bay
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VW1600S
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Adapt T25 gearbox onto a 74 Bay
Howzit
I would like to know if anyone has adapted a T25 5 speed gearbox onto a 74 (late) Baywindow, if it's possible and what is involved.
Pictures are worth a thousand words ............pls
I would like to know if anyone has adapted a T25 5 speed gearbox onto a 74 (late) Baywindow, if it's possible and what is involved.
Pictures are worth a thousand words ............pls
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fleetline15
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Re: Adapt T25 gearbox onto a 74 Bay
Lots of metal work and not much to gain also length is different. Top gear in a T@% 5 speed is not an overdrive and is similar to T2 top ratio.
The extra gear you get is effectively the first gear which is lower.
Mitchell
The extra gear you get is effectively the first gear which is lower.
Mitchell
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VW1600S
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Re: Adapt T25 gearbox onto a 74 Bay
Sorry to bug you but I'm at 0s on the subject, http://www.rjes.com/html/gearbox_types.html with all these differences isn't it better to have one of these 5spd with lower rpm (hopefully faster too)?
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retrovan
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Re: Adapt T25 gearbox onto a 74 Bay
What you have to look for is the FINAL drive ratio to one. As well as the top gear ratio.
If both have the same top gear ratio and you have a 8 speed box with the same final drive ration of say 4.5 :1 and you have a 2 speed box with a ration
of 4.1 : 1 then the 2 speed will give you a better fuel economy, and higher top speed then the 8 speed box.
If you ask Bugger, he has a calculation that he does, which will give exactly the RPM drop in top gear for the same speed.
Hope this helps......
If both have the same top gear ratio and you have a 8 speed box with the same final drive ration of say 4.5 :1 and you have a 2 speed box with a ration
of 4.1 : 1 then the 2 speed will give you a better fuel economy, and higher top speed then the 8 speed box.
If you ask Bugger, he has a calculation that he does, which will give exactly the RPM drop in top gear for the same speed.
Hope this helps......
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
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Bugger
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Re: Adapt T25 gearbox onto a 74 Bay
HI Yes the conversion is plausable / Doable
But first you need to give me the Code on your current box and the code on the 5speed box you are planning on fitting then I can check what Diff ratios and 4th /5th ratios each box has and then work out if the ratios are longer
Other wise we just bring longer 4th gear ratio for your bay box in from the States
Pierre
But first you need to give me the Code on your current box and the code on the 5speed box you are planning on fitting then I can check what Diff ratios and 4th /5th ratios each box has and then work out if the ratios are longer
Other wise we just bring longer 4th gear ratio for your bay box in from the States
Pierre
Adapterplates Available for Rotary in Beetle and others aswell
And Special Boxes built for Rotary Conversions and Scubies
Pierre
082 600 8663
CLick on Banner Below to be routed to the Web site
And Special Boxes built for Rotary Conversions and Scubies
Pierre
082 600 8663
CLick on Banner Below to be routed to the Web site
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VW1600S
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Re: Adapt T25 gearbox onto a 74 Bay
My gears weren't so lekker and when shifting down 2nd used to hide away and disappear 
I have subsequently found out what the problem was and have solved it. It's now working 5*.
I have the 002 box, the u plate had broken by one of the bolts and while it was open I replaced the hockeystick bushing. I know f koll about gear ratios but was considering the hypthesis of a lower rpm (noise reduction) and faster Kombi.
I have subsequently found out what the problem was and have solved it. It's now working 5*.
I have the 002 box, the u plate had broken by one of the bolts and while it was open I replaced the hockeystick bushing. I know f koll about gear ratios but was considering the hypthesis of a lower rpm (noise reduction) and faster Kombi.