Xsara Vts Box But Looking For A Longer 5Th?

[HERMAN 33]

Is it possible to fit a longer 5th gear to the xsara vts box (Diesel?)?

I just want a better motorway ration.

I do not use 5th on the track and I am happy with the rest of the rations?

I have searched but I am getting lost.

Cheers

Neil

 

[DamirGTI 327]

Longer 5-th for which engine Neil 16v or 8v ?

 

D

[Miles 331 1 Cars]

5th is generally the same on the odd couple of HDI box's I have seen, you need to watch the bush for 5th thou as they can vary in dia

[HERMAN 33]

Damir I have a Gti6/ xu10j4rs but could do with a higher 5th.

[dcc 855]

how about fitting a lower ratio cwp? - from a 4.4 to maybe a 4.2

[HERMAN 33]

_{Changing the CWP would change all the ratios. I am only really looking the change the 5th.}

_thanks

_Neil

[welshpug 1,626]

what engine are you running? never found that ratio to be short at all.

[Paul_13 212 1 Cars]

Are you sure it's a xsara Vts box? By sounds of it, it isn't

[HERMAN 33]

Yes its a VTS box I saw it come out the car with the engine.

[Miles 331 1 Cars]

Doesn't mean anything, I had one which was a HDI or something, car only had 65k on it as well

[Paul_13 212 1 Cars]

You had one off me Miles that turned out to be a 405 derv box. I took that out of that Xsara Vts it lived in

[pug_ham 241 3 Cars]

Damir I have a Gti6/ xu10j4rs but could do with a higher 5th.

 

 

what engine are you running? never found that ratio to be short at all.

 

 

What rpm are you pulling on the motorway just to check it is actually a VTS box?

 

As said, I think you'll struggle to find a longer fifth, looking through some of the gear ratios spreadsheets, the only box listed with a longer fifth is one from a 405 1.9 GR that apparently has a 0.658 fifth but good luck finding one fo those, if it'll fit your box.

 

g

[Toddy 7]

A VTS/MI Box should be 20 mph per 1000rpm in top from memory.

 

If you want a longer fifth you could swap to a 1.6 box with the fifth gear swapped with an MI 5th, this will give 22mph per 1000rpm.

 

Search for the gearbox calculator spreadsheet that will help you decide.

[HERMAN 33]

The car is currently in bits for a respray. So it can not check what the rpm/ speed is. I am confident that it is the correct gear box. The ratios are great through the rest of the gears and 5th is not that bad but I would have liked a longer 5th. If I guess it was about 4000 rpm at 80 may be a bit lower. I know from track days that the rev limter in 4th is about 125mph?

I was just thinking that a diesel 5th might be a little better for motorway speeds.

[Tesstuff 222]

How much motorway driving do you do a week?

[HERMAN 33]

When you put it that way not much but i am planning a trip to lemans and while the gearbox is sat on my garage floor thought I might change the 5th. I had got the idea that it was an easy job and worth doing.

[Tesstuff 222]

For the trip to Le Mans fit a larger rolling radius set of wheels.

 

Keep your present set as your normal driving set and then a second set for a long trip.

 

The second set could be 195/65/15 giving you nearer 21.5mph/1000 revs in 5th. Or even pick up some 16s and use 195/60/16 just for that trip.

 

Just an idea as it is a one off long trip.

Edited March 6, 2013 by Tesstuff

[EZ Tutty 7 1 Cars]

Neils gearbox is deffinetly a VTS box, rpm vs speed is the same as my car.

 

As said above, the 405 1.9 GR seems to be the only be1/3 car with a longer 5th than the VTS box.

[pug_ham 241 3 Cars]

I was just thinking that a diesel 5th might be a little better for motorway speeds.

 

A diesel gearbox has very close to the same gear ratios as the VTS box, fifth is the same ratio @ 0.757.

 

Only the final drive is different making the gears longer.

 

g

[HERMAN 33]

Cheers Graham.