Supra diff set up ?
27-09-2018, 11:56 AM
#41
10K+ Poster!!
It is probably time for the fabricators to work on a solution other than Supra. Obviously you need to get the ratio you want but a yank alloy one appeals to me. I would like a front diff option other than R n D but that is only due to the cost of those buggers.
27-09-2018, 03:14 PM
#42
PassionFord Post Troll
That's it though thiers not enough demand modified cossys are a minority nowadays only people with know how or mates with it are going to bother trying something else supras the only one that has had the conversion kit made that's why we've all got them don't listen to gayjay he drives a focus lol
27-09-2018, 05:30 PM
#43
10K+ Poster!!
Apologies for my earlier post, some covers are still available it would seem. I think you can get them Without the square corners.
27-09-2018, 06:41 PM
#44
New Owner
Good to know covers are still available thanks for posting that. I've recently got a 3.9 supra diff but don't have any of the other parts needed yet.
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
Last edited by Mad_Mat; 27-09-2018 at 06:44 PM.
27-09-2018, 07:00 PM
#45
10K+ Poster!!
Good to know covers are still available thanks for posting that. I've recently got a 3.9 supra diff but don't have any of the other parts needed yet.
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
yes MT and Mk sell then i I had mine done by MK, pics above before I sold it on here and went cradle. You can have bladed anti roll bar mounts added at same time. You need to exchange in an old beam ideally but worth checking as sometime they have them on shelf.
27-09-2018, 07:16 PM
#46
PassionFord Post Troll
Good to know covers are still available thanks for posting that. I've recently got a 3.9 supra diff but don't have any of the other parts needed yet.
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
my 7.5" ford doesn't sound healthy and has some free play on the input side so want to get it swapped over this winter. Be nice to get a 6 degree beam ready for the supra diff to bolt straight in. Anyone know if these are available?
27-09-2018, 09:19 PM
#47
Funny how one broken CWP makes the diff crap.
The problem that people don't consider is not hp its torque and where in the rpm range that occurs.
Other considerations with the Ford units are the ally cases. They distort under big torque, this unloads the mesh of the CWP, it jumps a tooth and munches itself into oblivion.
This is the case with the front 6" and all the rears (excpt 9").
Lots of work was done when using for competition, first was don't use the 3.9 front, the physical tooth count is too low on the pinion to get any cut into it. That is why step offs came about for the MT75.
There are motorsport backlash settings, this does affect life and noise though.
If i could I would upload a video of us launching the Escort on 235 Pirelli slick tyres on launch at 1.5bar boost at 3600rpm with over 500nm torque. No wheelspin in the dry.
Still using a 7.5" rear but a home made front diff/shafts setup from the rear of another vehicle. Same ratio front and rear, both plated LSDs.
The problem that people don't consider is not hp its torque and where in the rpm range that occurs.
Other considerations with the Ford units are the ally cases. They distort under big torque, this unloads the mesh of the CWP, it jumps a tooth and munches itself into oblivion.
This is the case with the front 6" and all the rears (excpt 9").
Lots of work was done when using for competition, first was don't use the 3.9 front, the physical tooth count is too low on the pinion to get any cut into it. That is why step offs came about for the MT75.
There are motorsport backlash settings, this does affect life and noise though.
If i could I would upload a video of us launching the Escort on 235 Pirelli slick tyres on launch at 1.5bar boost at 3600rpm with over 500nm torque. No wheelspin in the dry.
Still using a 7.5" rear but a home made front diff/shafts setup from the rear of another vehicle. Same ratio front and rear, both plated LSDs.
Last edited by markk; 27-09-2018 at 09:21 PM.
27-09-2018, 10:42 PM
#48
PassionFord Post Troll
That’s why I was wondering tooth contact pattern ect, what backlash do you set your diff at for competition? I set mine to 0.15mm which I believe is a bit on the slack side going off what the manual recommended.
27-09-2018, 10:44 PM
#49
PassionFord Post Troll
Only thing worth mentioning mark is yours being 4x4 so it will see less torque to the rear wheels than a rwd car
27-09-2018, 11:48 PM
#51
cossie fan (unluckerly)
I broke 2 lol no way I was doing it a 3rd time lol plus I take the advice of a well respected tuner who said the standard diff and gearbox will not last at your power level. He was right as I busted both lol. And your not wrong it is torque that breaks them but only if paired with grip! You iver spin it off of you grip and break things!
27-09-2018, 11:52 PM
#52
cossie fan (unluckerly)
No idea why there’s double posts this new passionford set up is rubbish
Last edited by ajamesc; 28-09-2018 at 12:00 AM.
27-09-2018, 11:55 PM
#53
cossie fan (unluckerly)
I build many diffs and gearbox’s at work we are a transmission specialist for daf. Mine was set up by myself. The back lash was spot on to fords tolerance and the contact pattern between the cwp was a nice tooth imprint on the crown wheel from the pinion in the middle of the teeth with the yellow contact paint we use at work
28-09-2018, 12:45 AM
#54
New Owner
I am rwd mate. I believe you can get the supra diff in a variety of ratios. The 3.9 might be a little short on the motorway i have not done the maths but it should really pick up well.
Last edited by Mad_Mat; 28-09-2018 at 12:46 AM.
28-09-2018, 06:09 AM
#55
PassionFord Post Troll
Sound mate won't belong until your releasing more ponnies lol that engine is good for it
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Caddyshack (28-09-2018)
28-09-2018, 08:36 AM
#58
10K+ Poster!!
28-09-2018, 08:41 AM
#59
10K+ Poster!!
Lots of work was done when using for competition, first was don't use the 3.9 front, the physical tooth count is too low on the pinion to get any cut into it. That is why step offs came about for the MT75.
There are motorsport backlash settings, this does affect life and noise though.
.
I am hoping that my car being light will help as ultimately it may well just spin the tyres. I only have 215 section track day tyres as that is as big as I can go.
28-09-2018, 10:17 AM
#60
PassionFord Post Troll
28-09-2018, 02:17 PM
#62
PassionFord Post Troll
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Jay, (28-09-2018)
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smiley (28-09-2018)
29-09-2018, 08:45 AM
#64
10K+ Poster!!
This is the sort of thing we have been looking at for mine. 9 inch yank CWP in 3.9 or any other ratio and then a bespoke ally housing and then output shafts to suit and then made with brackets to fit the ford normal setup. They can take 1000’s of bhp and much lighter. Similar for the front too.
29-09-2018, 12:03 PM
#65
PassionFord Post Troll
It’s a strange looking thing but sounds like a great idea especially if it fits in the original beam mounts.
29-09-2018, 12:36 PM
#66
10K+ Poster!!
I agree it needs to fit normal diff mounts.
Hopefully the prototype type will be ready early next yr.
29-09-2018, 03:22 PM
#67
PassionFord Post Troll
Be interesting to see what sort of money is in a bespoke diff like this
29-09-2018, 03:38 PM
#68
10K+ Poster!!
I don’t think they are going to be crazy money compared to doing a supra diff, diff kit, weir kit and flanges etc..
29-09-2018, 11:04 PM
#69
Advanced PassionFord User
Funny how one broken CWP makes the diff crap.
The problem that people don't consider is not hp its torque and where in the rpm range that occurs.
Other considerations with the Ford units are the ally cases. They distort under big torque, this unloads the mesh of the CWP, it jumps a tooth and munches itself into oblivion.
This is the case with the front 6" and all the rears (excpt 9").
Lots of work was done when using for competition, first was don't use the 3.9 front, the physical tooth count is too low on the pinion to get any cut into it. That is why step offs came about for the MT75.
There are motorsport backlash settings, this does affect life and noise though.
If i could I would upload a video of us launching the Escort on 235 Pirelli slick tyres on launch at 1.5bar boost at 3600rpm with over 500nm torque. No wheelspin in the dry.
Still using a 7.5" rear but a home made front diff/shafts setup from the rear of another vehicle. Same ratio front and rear, both plated LSDs.
The problem that people don't consider is not hp its torque and where in the rpm range that occurs.
Other considerations with the Ford units are the ally cases. They distort under big torque, this unloads the mesh of the CWP, it jumps a tooth and munches itself into oblivion.
This is the case with the front 6" and all the rears (excpt 9").
Lots of work was done when using for competition, first was don't use the 3.9 front, the physical tooth count is too low on the pinion to get any cut into it. That is why step offs came about for the MT75.
There are motorsport backlash settings, this does affect life and noise though.
If i could I would upload a video of us launching the Escort on 235 Pirelli slick tyres on launch at 1.5bar boost at 3600rpm with over 500nm torque. No wheelspin in the dry.
Still using a 7.5" rear but a home made front diff/shafts setup from the rear of another vehicle. Same ratio front and rear, both plated LSDs.
As Andy mentioned once you uprate the diff the next weak link is the cwp hence people started to use the supra stuff as it’s bullet proof in cosworths.
There are def not lots of other options out there for diffs to fit in a saff, without lots of fab work and r&d it makes sense to go with what’s tried and tested.
Cheers Paul
Its not that dear a conversion considering
30-09-2018, 09:58 AM
#70
PassionFord Post Troll
James have you got a pic of the inside of your cover had a chat with mt yesterday about one of his covers he has he mentioned it would need the baffle from the og cover welding in the bowl of the new cover my mk has no baffle or anyone else's I've seen
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smiley (30-09-2018)
30-09-2018, 10:39 AM
#72
10K+ Poster!!
Never heard of a baffle and do not recal one on the standard cover? I know they have a breather at the top.
30-09-2018, 10:42 AM
#73
cossie fan (unluckerly)
Mine has the small breather port at the top. It came with the extra fitting holes drilled for an oil cooler. Obviously as in the picture there blanked off in mine as I’ll not get the oil hot enough to need one in a road car.
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smiley (30-09-2018)
30-09-2018, 11:58 AM
#75
PassionFord Post Troll
Hmmm maybe meaning plumbing for cooler
"I have a silver cover it was from my first batch that I didn’t put the baffle section in so if you wanted it you would have to cut that piece out the inner bowl of your std cover and weld it into mine. The cover"
yes Ian nice to have morphed into an interesting post on here
"I have a silver cover it was from my first batch that I didn’t put the baffle section in so if you wanted it you would have to cut that piece out the inner bowl of your std cover and weld it into mine. The cover"
yes Ian nice to have morphed into an interesting post on here
30-09-2018, 03:38 PM
#76
30-09-2018, 04:14 PM
#78
10K+ Poster!!
30-09-2018, 06:58 PM
#79
Wahay!! I've lost my Virginity!!
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