I am looking for a gearbox for my 4x4 cosworth and had an eye on a bara straight cut gearbox wich is brand new but after looking here on the forum there a quite alot of people that had trouble whit it. So now i don't know what to do any advice is welcome!

 

don't think you'll find any gear kit for the mt75 that will take anywhere near your quoted figure

 

Oppilleger gearkit

 

are they rated that high
hats off to them if they are

 

E-mailed him a week ago but no answer! You gave me to much boost lol!

 

I contacted him a week or so ago and got correspondance back all within a day on all three occasions

as mentioned on the thread by my north of the border colleague ksa cossie kev he spelt it wrong though oppliger is the way to go imo, best value for money kit out there me reckens rated to 700 horsies iirc

got a kit coming for my car looking forward to it


Luciano

 

Sent him a PM on here so i will get an answer i hope. Do you have the standard ratio gearbox or the close ratio one? Are the full straight cut?

 

Standard ratio kit the gears are semi straight cut


Luciano

 

I've read some good things about the oppliger box. but i don't know if someone has tested it over 600bhp?

 

You knew what I meant though bruv

 

http://www.youtube.com/watch?v=VwlpurK9ahQ

I believe thats him testing one of his box's, no one can say he's being gentle, can they?

 

I saw that one too so i think they are very strong! I hope he will contact me for this.

 

one thing ive noticed with oppliger boxes, they all have alloy spacers. I presume thats how they make them stronger by having physically bigger gears.

They provide a spacer for the front prop, so does that mean the rear prop has to be shortened or have they shortened the output shaft at the tail end of the box??

 

Normaly it will fit. My mate has an R&D gearbox and they also use an alloy spacer and his rear prop still fits.

 

Is it not more cost effective to adapt another gearbox? E.g. Audi or Skyline?

Rocl

 

hello,

i have sent you a PM,we dont have in stock short ratio kits at the moment but we have a complete used but rebuild big tooth short ratio gearbox for 2000Ł delivered in Uk (not islands)

thanks

 

Pm'ed you!

 

Romain does your short ratio box solve the classic MT75 problem of 2nd and 3rd being too far apart???

Ive always found on standard ratios its not easy to do a fast change from 2nd to 3rd when above 5k rpm without burring the synchros.

Can you mix and match ratios to solve the 3rd gear problem yet still have a sensible ratio for 5th gear for road/high speed use??

 

Hi,

yes of course,this is one of the reason for why we have made a short ratio kit

regards

 

also do you do a centre push hydraulic clutch conversion on the MT75??

 

good question