Gearbox Question
#1
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Gearbox Question
Hi is there any way i can strenthen the BC box so it can take alot more power/torque without doin the conversion to a different box?
cheers
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#8
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If this could be done effectivly then ford would of done it and there would be no need for a stronger box like the mtx75, getrag 6 speed, or the volvo one in the focus rs/st
#16
Advanced PassionFord User
Standard BC box was built for ~190 Nm torque
Standard IB box was built for ~195 Nm torque
There are rumours about diesel boxes being stronger, but I've not seen any proof yet... well some diesels had MTX boxes fitted. They're built for more torque than the BC/IB5 boxes.
A friend of mine usually broke two gearboxes with his S1 (1850 CVH, WM management, T34) during one summer season.
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Maximum power i want to run is 300 and the car for mainly road use which the boost would be turned down for and the odd quarter mile when it would be whacked up haha
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rs turbo bc standard rebuilt box, up to u but a rebuilt rs turbo box with diff is goin to be 1200-1400 dependind on which diff , my last 1 with gripper last 5miles , i would but that money 2wards a mtx conversion theres abox in the for sale room
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How do you tell the difference between the B5 and the IB5? Can the standard LSD be reconditioned?
#24
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Is this an IB5
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Bugger
#29
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i converted my mk2 fiesta zetec turbo to run a mk1 focus rs gearbox.
what it cost me (sort of i broke a mk1 focus so got the box cheep)
box expect to pay £600
shafts £200 a set (you can use different shafts but i used the rs ones)
lincage £50
hydro clutch conversion and gearbox mount £140
clutch and flywheel (second hand £150 if your lucky)
i had to space my engine forward 15mm. I cut the inner chassie leg to make room for the box had to make a back mount i used the standard mount and worked from there.
as for the shafts i had some sleves made up (if any one wants some made, same as the mount and clutch conversion i can point you in the right direction) so that i could slot a mk2 xr2 shaft in one end and a focus rs shaft in the other cut them to the right lenth then welded them.
i ran the shafts at 15psi (260hp) but have now sent them off to be made into one piece shafts
what it cost me (sort of i broke a mk1 focus so got the box cheep)
box expect to pay £600
shafts £200 a set (you can use different shafts but i used the rs ones)
lincage £50
hydro clutch conversion and gearbox mount £140
clutch and flywheel (second hand £150 if your lucky)
i had to space my engine forward 15mm. I cut the inner chassie leg to make room for the box had to make a back mount i used the standard mount and worked from there.
as for the shafts i had some sleves made up (if any one wants some made, same as the mount and clutch conversion i can point you in the right direction) so that i could slot a mk2 xr2 shaft in one end and a focus rs shaft in the other cut them to the right lenth then welded them.
i ran the shafts at 15psi (260hp) but have now sent them off to be made into one piece shafts
Last edited by clarke5700; 26-07-2011 at 10:57 PM.
#30
#32
#36
Under the car...!
Thanks mate. How easy was it to fit the FRS LSD? what did you have to change? driveshafts? I am going to compare mine very closely to this photo later tonight if I can get it out, which I am planning to do shortly
#38
Under the car...!
Right, I've got it all out today. It's an MTX, looks identical to yours mate
Ignore the large steel bracket on the left of the pic (its for clutch slave cylinder mounting)
and also the rod linkage shown on the other picture. I will be reusing that for the new box.
SO, what are my options? If I have a focus RS box, can I swap the internals out and put them in this? Are the gears shotpeened in the RS focus box? is the LSD and easy swap into this case?
If I use current case then I could use current speedo etc? thanks
Ignore the large steel bracket on the left of the pic (its for clutch slave cylinder mounting)
and also the rod linkage shown on the other picture. I will be reusing that for the new box.
SO, what are my options? If I have a focus RS box, can I swap the internals out and put them in this? Are the gears shotpeened in the RS focus box? is the LSD and easy swap into this case?
If I use current case then I could use current speedo etc? thanks
Last edited by zetecbeast; 04-05-2015 at 02:23 PM.
#39
Under the car...!
As an update to this. I am buying an RS focus box.
I am hoping the ratios will be good, I am guessing they will...
I have no idea how I will get the speedo working, I also am hoping I can use my shifter rod linkage mechanism as the cable setup will be a right pain to customise for a non Ford FWD car I think...
Anyone?
I am hoping the ratios will be good, I am guessing they will...
I have no idea how I will get the speedo working, I also am hoping I can use my shifter rod linkage mechanism as the cable setup will be a right pain to customise for a non Ford FWD car I think...
Anyone?
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