s1 rallye VS quaife gear kit

[sexy_gt]

as above i think either one will be my next move, already have an atb in a vts box but its too long.

quaife kit worth the vote? who runs one?

id like to max out 125mph 5th 7,800 15" rims 50 pro tyres

currently reaching 125 in 4th! :n:

stew :fcuk:

[axsaxoman]

its not just the lower 5th gear speed but the factall the others are alot closer --first is good for around 40mph --not 23mph --and how many times are you just wrong geared onthe track with std ratios --nearly every corner
so yes worth the money --there are two sets of ratios avaialble as well .
I can offer discount on quiafe price as well -more if you could find a couple of other people

[AndySAXO]

yer quaife gearset is the best option to go for.... expensive step too... like john said it not just where you want to top at.

if you ring quaife up they could sort you a gear set that would get the most from the engine....

s1 box are ok for the pick up of revs the rev drop still the same... and with most n/a engine it not that good as it drop a bit too far IMO on my car anyway.. but i like the s1 box as it sort of helps with that as it pick the revs up faster, so can get quicker to get back in to the power band.

i am thinking about a quaife gear set.... i am going to be talking to quaife themself about one...

really a long first gear then short 2nd 3rd and four gears is the best way and a longer 5th gear for longer straights.

but like i said all MA gear set are the same...

if you have the money then yes defo get a quaife gearset.

[AndySAXO]

o and btw 5th gear in a s1 box at 7k is about 116 mph :P

[sexy_gt]

o and btw 5th gear in a s1 box at 7k is about 116 mph :P

cheers lads. im pleased someone has replied to this lol.

[AndySAXO]

Yer it a fun box really not best suited but works better maybe a XSI box would be better as know few who run them like it.

Would need to get the diff of the final drive it on vts box.

Maybe save for a Quaife gear set? I am doing that I think at some point.

[sexy_gt]

Hey money is sat here lol just dont want to blow it on a daft change of gears ;)

[AndySAXO]

Yer full Quaife set about 2k..... Maybe worth talking to quiafe, see what they can do with a better ratio, will make the engine work so much better. Will make you quicker too if you get the correct ratios

[sexy_gt]

john boy (gmc) tells me about 1300mark delivered if i remember correct. i have an ATB in the vts box already.

[AndySAXO]

Look on quiafe site... It about 1,3 on there too..... Ring them and talk to them hoot lads there very helpful. :y:

Get the dog box one though :p ha

[sexy_gt]

yeah not that flush. not even if i sold a bollock :)

[AndySAXO]

Would be funky.... Seriouly though ring Quaife see what the suggest maybe even get a deal..... Very good serivce from them too.

[sexy_gt]

worth the call i guess, cheers

[sexy_gt]

who has a quaife gear kit and can i have a go please :)

[dannygti]

Not people have these.. I know vossy on rallye register has one of these box's

[sexy_gt]

next move may be one of the kits or just go straight to s/c but that couldnt be till next year!

[K17NEY]

who has a quaife gear kit and can i have a go please :)

Not got one, But ive had a go of one and they're definately worth the money, Totally transforms the car IMO. If i could afford one id have one.

[axsaxoman]

Look on quiafe site... It about 1,3 on there too..... Ring them and talk to them hoot lads there very helpful. :y:

Get the dog box one though :p ha

yes but quiafe price is plus vat,buying all those difs has given me better discount ,which i pass on where possible
there are 2 kits c/r + homologated --you can see the ratios on quaifes site

[sexy_gt]

john possible group buy?

[Barry123]

Might be useful to add the quaife gear set to the Saxo calculator... Completely irrelevant but might be useful to people with highly tuned engines (narrow power bands) to predict rpm changes and that. Or even for engines in typical tune to see the benefits of the gear set.

[Dave_P]

I've been told by more than one person that after fitting a c/r box to there race car the lap times haven't dropped at all.

Thats odd. :ponder:

[sexy_gt]

Interesting

[axsaxoman]

then they are not driving right - ,--c/r on knockhill is at least 2secs a lap + lsd is another 2secs a lap on a saxo or ax n/a type of engine with same bhp over any std ma g/box ratios
boostedcars it may not hold true for the c/r ,but even more so for the dif

[sexy_gt]

then they are not driving right - ,--c/r on knockhill is at least 2secs a lap + lsd is another 2secs a lap on a saxo or ax n/a type of engine with same bhp over any std ma g/box ratios
boostedcars it may not hold true for the c/f ,but even more so for the dif

and thats on a short lap! so over a lap that will take 2 minutes do you expect 4 seconds off?

[KamRacing]

depends how many times you have to change gear!

[dannygti]

I'd say it would really depend on the engine of how much time is saved.
Standard'ish engine would still have a half decent broad range of power, so close ratios wouldn't give massive advantage

[raunchz]

Surely the c/r kit will be most beneficial on a windy'ish track where you accelerate through the gears a lot.

In comparison, on a long open track it wouldn't be a huge advantage?

[axsaxoman]

and thats on a short lap! so over a lap that will take 2 minutes do you expect 4 seconds off?
It does not work lke that
depends how long the straights are and how many corners etc ,etc .
even at silverstone a stdish engine saxo vts will never get to rev limter in fifth on the longest straight --so its over geared
If you cannot get very close to rev limter on longest straight in highest gear then you must loose time .
touring car with 300bhp+ 6 gears at knockhill only gear for around 135mph ,so ifyou can,t use higher gearing with 300 bhp+ 8000rpm what chance do you have with 150bhp and a 7250 lmter of getting to 142mph--none .
and most of you will be wanting to use 7500-8000rpm --that makes a top speed of 156mph @8k and thats not even taking into account the std gear ratios have big gaps which will make for flat spots in the acceleration ,
our ax race car at730kgs was geared for 118mph@8k with 128bhp@wheels --we never got more than 7400rpm in fifth ever on knockhill --
lowering overall gearing has the effect of giving more bhp@wheels .
the ideal gearing is you change at maybe 250rpm over maxbhp and the next gear shouldrop the rpm to just bfore where max torque is produced
so you are alwat accelerating between max torque +max bhp
you can debate this as much as you want - the bottom line is you should gear a car to suit the longest straight -ideally just on the rev limter as you hit the brake pedal at the 100 or 75 yard board for the corner

[sexy_gt]

john this is my power graph,

http://img.photobucket.com/albums/v212/sexy_gt/saxo%20vts/2011-08-27135743.jpg

[axsaxoman]

looking at graph ,which looks a bit strange -- 5000-7000k would be the rpm range ffrom one gear to the next change at 7k and if gearing is right would comeback to about 5k,but with flat curve at top you could say change at 6600-you don,t have any more power further up,so its jsut wasting time as acceleration will be slowing

[sexy_gt]

looking at graph ,which looks a bit strange -- 5000-7000k would be the rpm range ffrom one gear to the next change at 7k and if gearing is right would comeback to about 5k,but with flat curve at top you could say change at 6600-you don,t have any more power further up,so its jsut wasting time as acceleration will be slowing

the flat line, any ideas john? the cams was timed on rollers to give most power. springs worn/lifters?

[Dave_P]

then they are not driving right

Well i cant comment on that, one of the cars races at Knockhill and is leading its class but the engine has a good spread of power/torque and isn't peaky at all.

I do find it hard to believe its not quicker but the times are the same. :wacko:

[axsaxoman]

the flat line, any ideas john? the cams was timed on rollers to give most power. springs worn/lifters?

could be -something is wrong

[sexy_gt]

could be -something is wrong

would it be ok to rebuild head with new parts, having marked where the cams are set now and refit, take back to same dyno and expect much more better result?

[sexy_gt]

i have a perfectly good s1 box now, worth fitting a quaife diff in or sell on and get quaife gear kit for the vts box i have now?

[dannygti]

id say get the gear kit..

they make track work much more enjoyable as well as improve times.

[sexy_gt]

id say get the gear kit..

they make track work much more enjoyable as well as improve times.

cheers for input.

im confused as to if the quaife gear kit is going to be worth the extra money over the s1 box i have sitting here. ive driven a breathed vts with the s1 box on and it felt great, i just cant imagine how or where the quaife could and would improve. could you explain to me please?

[dannygti]

well the simple matter of it is, it wouldnt be a massive gain with your engine in its current spec. when an engine becomes peakier it requires the gear ratios to keep it in the good stuff, but your engine isnt so peaky so it wouldnt drop out of the good stuff as much.
however, say if you choose the wrong gear the close ratios wouldnt be as bad as a normal gearbox..

also, having a great gearbox makes an average engine seem strong. however a great engine will seem poor without a great box.

[axsaxoman]

you won,t choose the wrong ratios as the quiafe set is near perfect for an n/a car
its very simple drop your gearing by 20% and you will have 20% more torque at wheels at same rpm .
you have asked this so many times --do the maths you know where max torque of engine is and max power ,when you change up you should change at an rpm that means the engine drops back to around max torque --
you just can not do that with ANY std pug /cit g/box ratios