BE Gearkit - Page 2 - Saxperience

Ross^p · 21st September 2012, 17:19

Just been researching this - the 205 1.8 GRD diesel has a 3.471 FD. Using my existing ratios gives the exact results (pretty much) I want so that seems to be the best option. Just a crownwheel/pinion change too. Gives me a theoretical top speed of 178mph, but maintains the powerband I have currently and doesn't dump me out of any power on changes.

I need to be careful though - a little knowledge is a dangerous thing! I'm bound to be over simplifying it!

xsi16v · 21st September 2012, 20:05

Im the same Ross.

I understand the workings of a box and built my last MA with quaife gearset and lsd. Its all the tech stuff, final drives and ratios spin me out!!

If i go for a gearkit ill just ask for the longest ratios possible?? even these will be way shorter than a standard box?

Ross^p · 21st September 2012, 20:12

Quote:

Originally Posted by xsi16v

Im the same Ross.

I understand the workings of a box and built my last MA with quaife gearset and lsd. Its all the tech stuff, final drives and ratios spin me out!!

If i go for a gearkit ill just ask for the longest ratios possible?? even these will be way shorter than a standard box?

Have you seen this (sorry if I'm teaching you to suck eggs here!):

http://www.rallyparts.co.uk/peugeot/...ug_gearing.xls

You can fiddle around with the stock ratios from many pug boxes, and come up with something you want. In my case, the FD is all I think I need to change. Possibly 5th also, but I'll try the FD only first

Lots more reading for me to do over the weekend for sure!

dannygti · 21st September 2012, 20:24

Do not believe it when people say a close ratio gearset won't help with a turbo car for track work. You can still work a close ratio gearset to your favour it just means you will have a ling first gear.. Not such a problem with high output engines

xsi16v · 21st September 2012, 20:27

some useful info there.

If you went for a quaife gearkit all that would be out the window as you would be using there final drive options?.

dannygti · 21st September 2012, 20:37

Quote:

Originally Posted by xsi16v

some useful info there.

If you went for a quaife gearkit all that would be out the window as you would be using there final drive options?.

Really to optimise you need a power graph, then you can work out..
I think you can mix standard final drives, which can help as there's normally 'y'all' ones from diesels that could work well with a gearkit and boost

gazza808 · 21st September 2012, 20:58

I would love a Long first gear,
Launching in 2nd is slightly annoying,
What's the fd of the standard Picasso box a I haven't had it apart just yet.

xsi16v · 21st September 2012, 21:16

Quote:

Originally Posted by dannygti

Really to optimise you need a power graph, then you can work out..
I think you can mix standard final drives, which can help as there's normally 'y'all' ones from diesels that could work well with a gearkit and boost

Work your magic

tweeqd · 21st September 2012, 21:29

ross i have an excel file with most of the BE range ratios
i built a box last year thats a Diesel gearkit and FD but xsara/gti6 1st as the diesel one is way too low

the problem i had was with the boost not coming in untill 4k and wheel spin at the top of the rev range 1 and second were so long they dropped me off boost hence the terrible 1/4 mile 1st 8th

thats part of the reason i now have the BE4/3/6 hybrid

(6 speed is a tight fit)

the top speed on the spreadsheet of my old box was 178mph@7400

i got to 152 but bottled it as it wasnt on my private road

tweeqd · 21st September 2012, 21:31

('box/FD) 1st 2nd 3rd 4th 5th 6th FD
205 Diesel 1.8 GRD 3.31 1.88 1.28 0.97 0.76 3.47
205 GTI 1.6/1.6 3.31 1.88 1.36 1.07 0.87 4.06
205 GTI 1.6/1.9 3.31 1.88 1.36 1.07 0.87 3.69
205 GTI 1.6/mi16 3.31 1.88 1.36 1.07 0.87 4.43
205 GTI 1.9 Gutmann 2.92 1.85 1.36 1.07 0.81 3.94
205 GTI 1.9/1.6 2.92 1.85 1.36 1.07 0.87 4.06
205 GTI 1.9/1.9 2.92 1.85 1.36 1.07 0.87 3.69
205 GTI 1.9/mi16 2.92 1.85 1.36 1.07 0.87 4.43
206 GTI 180 2.92 1.85 1.36 1.07 0.87 3.69
306 GTI/S16 2.92 1.85 1.28 0.97 0.76 4.43
306 gti6/gti6 2.92 1.87 1.41 1.15 0.95 0.80 4.05
309 GTI16 (90-91) 2.92 1.85 1.28 1.03 0.76 4.43
309 GTI16 (92-93) 3.42 1.95 1.36 1.05 0.85 4.43
405 1.6 carb 3.25 1.85 1.28 0.97 0.76 4.19
405 1.9 carb 3.25 1.85 1.28 0.97 0.76 4.06
405 SRI / 1.6 GTI C/R 3.31 1.88 1.28 0.97 0.76 4.06
405 T16 3.42 1.82 1.25 0.97 0.77 3.93
mi16/1.6 2.92 1.85 1.28 0.97 0.76 4.06
mi16/1.9 2.92 1.85 1.28 0.97 0.76 3.69
mi16/mi16 2.92 1.85 1.28 0.97 0.76 4.43
Xantia 2.0 SX 3.46 1.36 1.07 0.80 0.76 4.06
Xantia VSX (s16) 3.46 1.87 1.36 1.07 0.80 4.27
Xsara VTS 2.92 1.86 1.28 0.95 0.74 4.43
ZX (CB) 3.42 1.81 1.28 0.97 0.76 4.29
ZX (CL&CJ) 3.46 1.85 1.36 1.07 0.87 3.75
ZX 16v 2.92 1.85 1.28 0.97 0.76 4.43
ZX Volcane 2.0i 3.46 1.85 1.36 1.07 0.87 3.59
Quaife Gearset (4.77 FD) 2.69 1.93 1.44 1.14 0.95 4.79
Quaife Gearset (4.4 FD) 2.69 1.93 1.44 1.14 0.95 4.40

tweeqd · 21st September 2012, 21:33

http://www.gearboxman.co.uk/inforatios.html

you can use this tool to pick the right gears to use

Ross^p · 21st September 2012, 21:58

Thanks Martin, appreciated

I obviously love the idea of the 6 speed but it's not realistic is it lol.

My torque curve now is awesome tbh - just how I'd like it. (full torque pretty much solid from 4750 - 7250). I've a real nice spread of power across a good rev range, so if I drop 1500rpm between gears, it doesn't matter. I don't need close ratio or any of that jazz.

I think for strength though if I go with any "stock" components they need to be shotpeened or cryo or whatever.

Doesn't help I've no mechanical sympathy at all - rather prepare now!

tweeqd · 21st September 2012, 22:13

6 speed is realistic, i have one in the AX

the 6 speed also has a 4.05 FD

i worked out my last box with the calculator tool and speked the perfect box but didnt antisipate wheel spin which fucked up the whole box, a 1500 rpm change should work ok even with wheelspin

is 4750 not a bit late for the torque?? mine went from 4200 to 7400 and i hated the lag

Ross^p · 21st September 2012, 22:15

Quote:

Originally Posted by tweeqd

6 speed is realistic, i have one in the AX

the 6 speed also has a 4.05 FD

i worked out my last box with the calculator tool and speked the perfect box but didnt antisipate wheel spin which fucked up the whole box, a 1500 rpm change should work ok even with wheelspin

Ok, you're actually a wanker for making me think of that...

If it fits in the AX, I should have room for two in the 106...

Here's the graph from the last session - it drives really well tbh, so I'm not disappointed! For sure a million percent improvement on the gt30!

tweeqd · 21st September 2012, 22:22

it fits but its but not a straight fit lol

ill get some pics of it fitted on sunday

Ross^p · 21st September 2012, 22:23

Quote:

Originally Posted by tweeqd

it fits but its but not a straight fit lol

haha epic. Reminds me of the V8 mini classic. Technically "fits" you just have to stretch your definition of "fit"

Please do mate - very interested to see the chassis leg reinforcement etc.

blackie_2k5 · 21st September 2012, 23:07

nice bit if reinforcement should even out the weight distribution a bit as well

Ryan^p · 21st September 2012, 23:50

Told you about the chassis notching ross

Ross^p · 21st September 2012, 23:50

Quote:

Originally Posted by Ryan

Told you about the chassis notching ross

What is this, fucking peer pressure?

PS ^ is not a "notch" lol

welshpug · 22nd September 2012, 09:34

How close to the tyre does it go?

Have seen one in pics before, was there much modding needed to the bellhousing to allow for the selectors to move fully?

Shame there's only 3.95 and 4.06 that fits originally though there are some available from bacci romano but not cheap at all and more rally orientated.