Run the gearbox at twice engine speed
Thats the clever way of doing it..... basic physics
Run the gearbox at twice engine speed
Thats the clever way of doing it..... basic physics
i hate clutches + gearboxes, i've broke so many of the poxy things it drives me to tears
. Can some clever git please design one thats of any fooooookin use please !!!!
and without weighing half a ton!
Give Mike Endean a call
Originally Posted by Retromotorsport
LMFAO!!
Very dry...
Then Gaz can give rallycross a try too
Sierra cosworth turbo race car
QMN saloon car championship
RETRO Motorsport
Then Gaz can give rallycross a try too
At last we agree on something
At last we agree on something
Mt mate used to run a diesel box in his series one and swears by it, saying it was loads stronger but no lsd in it.
Thats probably why it was stronger then, cos the thing was forever spinning one wheel, its grip that breaks transmittions!
I'm sure quaife and Tran X must have stronger RST boxes, they do have various solutions to most Ford setups
Sierra cosworth turbo race car
QMN saloon car championship
RETRO Motorsport
the diesil gearboxes are not stronger they just have different gearing from rs turbo ones , chris has broken lots of them as well . The 300+ bhp fiesta from hell runs standard gearboxes with an uprated main shaft and an atb diff . They last 6 months or so on the street but it's the rag racing slicks that can kill them in a few secs. Chris can't use any fancy gearkits in his car as they will only let it do 100 mph flat out which is no good for what he wants . A focus rs gearbox is very expensive and would still break so instead of costing him £50 a go it would cost £500 !!!!!
You know a solution to that then, put the engine back in the front and drive the rear wheels through a T5 gearbox. That should hold up ok
She's built like a Steakhouse, but handles like a Bistro
quaife do but they only rate to box to 175bhp,Thats probably why it was stronger then, cos the thing was forever spinning one wheel, its grip that breaks transmittions!
I'm sure quaife and Tran X must have stronger RST boxes, they do have various solutions to most Ford setups
i have had loads of these FWD boxes in bits, they have several weaknesses, the main one is the layshaft bearing is too small, ford did put bigger ones in the hydralic clutch type IB5 boxes, diff bearings are rather marginal, these can both be overcome with regular rebuilds however that wont get round the fact that the gears themselves, and final drive in particular are too narrow to handle serious power.
the only uprated bit in RST boxes is that they have bigger diameter syncro's, but syncro wear isn't usually an issue with these boxes anyway,
diesel box is no different to a std fwd box, except for a crap low ratio 1st gear and stupidly long final drive ratio
i built a couple of close ratio boxes for andy wickens using bits of IB5 to make nice close ratios, together with turbo lsd, it worked well, until he bolted on a set of massive touring car wheels and tyres the greater traction promptly stripped teeth off the cwp
so the moral of the story is don't get too much power from your cvh turbo engine cos you will need lots of gearboxes a year !!!!
Whats the most powerful FWD car available? Nick the gearbox off that and fit it with a custom bellhousing and driveshafts. Thats gotta be cheaper than replacing the box every five minutes and at least you can enjoy the car.
She's built like a Steakhouse, but handles like a Bistro
He might actually be better off with an Autobox, something out of a Modern TDI Auto should easily handle the torque
Your worry then will be shafts and joints to take it
mxt box from a fwd RS2000 should cope well with turbo power, but it would need work to fit and no lsd unless you go shopping with quaife
that's what i was going to suggest... think it's mtx though?
I'm sure i heard these were stronger.
a lot of 70's cadilacs are front wheel drive and had 300bhp+ giant V8's in em, if a box can handle that, the torque from a weeny turbo 4 pot wont hurt it.
what , the weedy 4 pot that makes 320 bhp , 330 ibls feet of torque and runs 11 sec quarters at 120 mph
pah, weeny torque figures!
The oldsmobile toronado from '66 was also fwd and it made 385 bhp @ 4800 rpm and 475 ft lbs @ 3200 rpm and the car weigh over 2000 kilo's so i cant see that gearbox breaking in a lightweight 4 pot turbo car. it did 0-60 in 9.9 which aint bad for a car built that long ago.
There was a GT version built in 1970 that had 400bhp and did 0-60 in 7.5 but i cant find the torque figures for that, wouldnt recomend ANY version for charging about in though as they ALL had drums all round ok for drag racing i spsoe though!
there was also the big citroen that came with a maserati engine, was that still fwd? or anything thats mid engined would do the job, AND you could turn the engine around the right way.
Last edited by popuptoaster; 17-07-2006 at 12:39.
1970-71 455Cu.In (W34) 4-BBl Carb 400HP @ 5000rpm 500ft/lb @ 3200 rpm
taken from Chiltons ARM 1964-1971
Even Noble had trouble putting that sort of power through a fwd, transverse style setup (albeit mid mounted). Thats why the new ones are mounted inline with a proper ferrari type transaxle
Sierra cosworth turbo race car
QMN saloon car championship
RETRO Motorsport
cheers for the comments guys, yes there is still lots i could do but what most of youd dont know is that this car has only cost me about 3 grand to build, yes i could go and get a cadalac gts autobox and graft it in somehow but i like knowing everything about my car and auto boxes are a bit weird to say the least, then there is finding one, fitting it, getting the driveshafts to fit, getting it to work etc, if i had pots of money i wouldnt be running a cvh in it anyway, i would have an all steel zetec or cosworth lump, get ya noses in performance ford this month, i was the fastest car in the fiesta thrash they had seeing off zetecs and 2wd and 4wd cosworth examples, ok i have gearbox issues to contend with but its only cost me £60 to fix it
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