MA Gearbox Ratios - Page 3 - Saxperience

Ryan^p · 10th January 2010, 21:28

Quote:

Originally Posted by BoiRacer

so a saxo 1.6 vtr will hit 141mph in 5th gear at 6250RPM?

if it can overcome drag

Junaid · 10th January 2010, 21:35

Quote:

Originally Posted by Ryan

if it can overcome drag

hopefully

heard from some people on saxp they manged to get it to 130
im sure thats possible

Sparco_Tom · 10th January 2010, 21:36

pfffttt hahaha yer right

JRC1 · 10th January 2010, 21:38

Quote:

Originally Posted by BoiRacer

hopefully

heard from some people on saxp they manged to get it to 130
im sure thats possible

You're not talking about a standard VTR doing 130mph are you without any mods?

Sparco_Tom · 10th January 2010, 21:39

judging by all his other posts. yup

JRC1 · 10th January 2010, 21:42

There's me thinking a VTS is quicker than a VTR and according to Parkers VTS top speed is 127mph.

Ryan^p · 10th January 2010, 21:49

Quote:

Originally Posted by Sparco_Tom

judging by all his other posts. yup

i loled.

raunchz · 10th January 2010, 21:51

what a joke tbh

Sparco_Tom · 10th January 2010, 21:56

I think some people need to read a few thread before opening their mouths

col101 · 13th January 2010, 10:50

Quote:

Originally Posted by ax90vtr

Hi i have some tyres sizes here and if you could work out my top speed in 1st 2nd and 3rd gears only that would be great. Standard saxo vtr eng and box tyre sizes 185/65/14 195/60/14

The rolling radius is the same on these 2 tyre sizes, so theoretical speeds will be the same.

Quote:

Originally Posted by BoiRacer

so a saxo 1.6 vtr will hit 141mph in 5th gear at 6250RPM?

As previously mentioned in this thread this is the theoretical top speed that the gearbox is capable of generating, not the top speed the engine and gearbox is capable of doing.

Martini_Racing · 2nd February 2010, 21:06

I have been reading all the threads about power improvements and I have conducted a lot of research about how to go about this, which all seems to cost (suprise suprise) a fair amount of wedge. However one area which i thought I could ask you guys is about gear ratios.

I am currently running a saxo vts which is a MSA log booked rally car. pic in thread below...

http://www.mandh-photography.co.uk/e...bent10-546.htm

this was my first event in the car and although the handling feels positive (Gaz gold set up on 190lbs springs) on the fast straight sections I lost massive amounts of time. My co-driver at the event stated that I should look at putting a close ratio box on the vehicle as it was bogging out in 4th and 5th, he stated that the performance gains by doing this would be cost effective solution to start with rather than going down the cam ecu port an polish route. First question is he correct?

2nd up I have seen a close ratio box from Quiafe which is around £1200. Does anybody know whether a 106 rallye standard box has closer ratios and would this fit?

Once again I am aware of all the power gain forums and I know I can do as much as like but it all depends on how I peddle it, but once it's flat to the floor there is bugger all else I can do. Any sensible advice would be awesome.

cheers

raunchz · 2nd February 2010, 21:19

what sort of speed do you think you'll want to top out at?

You got a 16v engine? What is the rev limit?

A 16v engine with a 7800 rev limit will top out at 130 with an S1 rallye box (4.54 final drive) - surely this would be more than enough for you? IT'd cost a lot less than a quaife box! You know the ratios of the quaife box and the FD ratio?

Ryan^p · 2nd February 2010, 21:20

The quaife gearset the gears are spaced alot closer together.

The rallye gearbox isnt a close ratio gearbox, its the same in gear ratios as a vts box but with a different final drive. So if you run a very peaky engine its no different.

RAFkev · 27th February 2010, 04:54

Quote:

Originally Posted by Ryan

The rallye gearbox isnt a close ratio gearbox, its the same in gear ratios as a vts box but with a different final drive. So if you run a very peaky engine its no different.

What do you mean by your last sentence? No different?

Surely if (for example, so dont quote me) a standard vts box will do 60mph on the limiter in 2nd, an S1 box on the same engine would do a few mph less? But would get there a little quicker?

stephen34 · 28th April 2010, 18:23

does a vts top out at more than a vtr ?

jimmy88 · 4th May 2010, 19:08

i need a gearbox i am on my 2nd one and its on its way out again, the gearbow just cant take the power!! (vts) jimmy

raunchz · 4th May 2010, 19:08

Quote:

Originally Posted by jimmy88

i need a gearbox i am on my 2nd one and its on its way out again, the gearbow just cant take the power!! (vts) jimmy

good luck with it - you'll be after a diesel box then ? IJOKE !!!!!!!!!!!!!!!!!!!!!!

isle-of-mull · 4th May 2010, 22:15

Quote:

Originally Posted by Martini_Racing

I have been reading all the threads about power improvements and I have conducted a lot of research about how to go about this, which all seems to cost (suprise suprise) a fair amount of wedge. However one area which i thought I could ask you guys is about gear ratios.

I am currently running a saxo vts which is a MSA log booked rally car. pic in thread below...

http://www.mandh-photography.co.uk/e...bent10-546.htm

this was my first event in the car and although the handling feels positive (Gaz gold set up on 190lbs springs) on the fast straight sections I lost massive amounts of time. My co-driver at the event stated that I should look at putting a close ratio box on the vehicle as it was bogging out in 4th and 5th, he stated that the performance gains by doing this would be cost effective solution to start with rather than going down the cam ecu port an polish route. First question is he correct?

2nd up I have seen a close ratio box from Quiafe which is around £1200. Does anybody know whether a 106 rallye standard box has closer ratios and would this fit?

Once again I am aware of all the power gain forums and I know I can do as much as like but it all depends on how I peddle it, but once it's flat to the floor there is bugger all else I can do. Any sensible advice would be awesome.

cheers

i run a vtr rally car. first rally i done in it, it was just a standard engine and box. bit of a disaster with the ratios in the tight bits. so fitted a quaife box with gripper diff. top speed of 80 mph i 5th with stadard engine and standard ecu with revloimiter standard. fitted a 3500 high lift cam, dastek ecu with limiter at 7500 (i think) 52 mm throttle body. now does 112 mph and it gets there like shit off a shovel

Lippy · 15th May 2010, 22:47

this thread is immense! loving the info here!

I drive a Vts and wanted to know if you can fit an S2 Rallye box so you get the quicker low gear speeds but change the 5th gear so that on a motorway you can do 90 without it screaming and making loads of noise?

Im thinking this cant be done as its the final drive that determines this and not the gear sizes?? if theres another way of doing this let me know.

Im still learning so feel free to call me a numpty

Mr_P · 15th May 2010, 22:51

Quote:

Originally Posted by Lippy

this thread is immense! loving the info here!

I drive a Vts and wanted to know if you can fit an S2 Rallye box so you get the quicker low gear speeds but change the 5th gear so that on a motorway you can do 90 without it screaming and making loads of noise?

Im thinking this cant be done as its the final drive that determines this and not the gear sizes?? if theres another way of doing this let me know.

Im still learning so feel free to call me a numpty

AFAIK the final drives are easily changed from box to box.