best diff for 2wd cosworth
. I have also given them a front diff so they can do these as well (for the 4x4 Cosworths) 
12-03-2010, 11:52 AM
#83
Jamie @ Fast Ford
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Agreed. We've got a feature showing how to convert from the OE viscous diff to a Titan plated diff comming up in the next issue. Bernie at CTS was also very impressed with the Titan unit.
12-03-2010, 01:49 PM
#87
PassionFord Post Troll
Good feature - will look out for that. Be good if you could get an example of all the different types available at some point in the future and test alongside each other ( like the Intercooler tests ).
After all it's a lot of money for Joe Average to fork out on one type over the other if he doesn't like it
12-03-2010, 02:48 PM
#88
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The Cossie diff is also a viscous diff 'with plates in a sealed unit'. But you also need the sun and planet gears (the notoriously weak link on Cossie diffs, especially when running 2wd) to allow the wheels to turn indpendently of each other, i.e. not a locked diff or spool.
As one wheel slips the sun and planet gears try to work as they would normally in an open diff, but the drag created by the plates moving through the viscous fluid prevents this and means that both wheels are encouraged to turn with the same torque effort.
***forgot to mention, viscous pack is above sun/planet gears in that pic***
Last edited by Jamie@FastFord; 12-03-2010 at 02:54 PM. Reason: my bad
12-03-2010, 04:21 PM
#89
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30 plates used in the std cosworth VC , theyre good diffs and when tightened are a great item until you try and do the Traffic light grand prix with it !
Titan have been messing about with their sintered diff for 2 years now , i still wonder if it will ever be made for the 7.5" Diff to be honest .
12-03-2010, 06:26 PM
#91
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They have mate. Only just come out. I've got one for my project Saph and I think Mike is on about getting one for his Escort.
(Although I'm not sure if he is still running the 7in
)
12-03-2010, 06:32 PM
#92
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Good feature - will look out for that. Be good if you could get an example of all the different types available at some point in the future and test alongside each other ( like the Intercooler tests ).
After all it's a lot of money for Joe Average to fork out on one type over the other if he doesn't like it
After all it's a lot of money for Joe Average to fork out on one type over the other if he doesn't like it
Thats a great idea, only problem is it would be a real pain to test. The biggest issue is that diffs are like handling packages, and personal preference plays a massive part in which would best suit you and your driving style.
12-03-2010, 08:17 PM
#93
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the 7" version is a Caterham diff ! Ive had a 7.5" diff with them ready to build a prototype into for 8 months , when i last spoke to titan they promised "again" that they would make these but i suspect theyre only beefed up kit car diffs .
If theyre finally making proper 7.5" units then i'll be very interested to try them out in a racecar ,see if they will be any good to sell !
12-03-2010, 08:33 PM
#94
cossie fan (unluckerly)
You carnt find a thing on the net about titan diffs other than if u have a 4x4 nissan lol other than one bit were they talk about a atlas and a 7inch ford diff it also claims to give better traction than a steel plated diff also says noise will be reduced! Is anyone running one right now! will be good too see if they are better than grippers as grippers are very good diffs and give me really good traction and thats with around 500lb ft.
12-03-2010, 08:36 PM
#95
30 plates used in the std cosworth VC , theyre good diffs and when tightened are a great item until you try and do the Traffic light grand prix with it !
Titan have been messing about with their sintered diff for 2 years now , i still wonder if it will ever be made for the 7.5" Diff to be honest .
and how do you 'tighten' them?
12-03-2010, 08:47 PM
#98
cossie fan (unluckerly)
You carnt find a thing on the net about titan diffs other than if u have a 4x4 nissan lol other than one bit were they talk about a atlas and a 7inch ford diff it also claims to give better traction than a steel plated diff also says noise will be reduced! Is anyone running one right now! will be good too see if they are better than grippers as grippers are very good diffs and give me really good traction and thats with around 500lb ft.
15-03-2010, 09:42 AM
#99
PassionFord Post Troll
Originally Posted by Mike1
Good feature - will look out for that. Be good if you could get an example of all the different types available at some point in the future and test alongside each other ( like the Intercooler tests ).
After all it's a lot of money for Joe Average to fork out on one type over the other if he doesn't like it
After all it's a lot of money for Joe Average to fork out on one type over the other if he doesn't like it
Thats a great idea, only problem is it would be a real pain to test. The biggest issue is that diffs are like handling packages, and personal preference plays a massive part in which would best suit you and your driving style.
The Titan one sounds much nicerquieter/more refined but I'd be reluctant to fork out over £1000 to find it wasn't quite what I wanted.
It would just be fast road use for me
15-03-2010, 12:32 PM
#100
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If it's just fast road use you want, there's nothing really wrong with the standard viscous diff. You can get them re-rated (using different viscousity fluids) to make them behave slightly differently (the last one I had done by Bernie at CTS was spec'd for 'hooning around'! lol)
The biggest problem with the standard diff is the planet gears are notoriously weak. As the are based on an open diff with a viscous coupling effectively attached to one end, they still retain two sun and two planet gears. It is these that get munched in big power cars and when people launch the car. Motorsport planet gears are available but even these have their limits, and I personally wouldn't want to run one with much over 400-450 bhp, because my dickhead-like driving style would mean I'd break it frequently.
The plated-type diff like the Gripper and Titan TTM have a 4-planet gear design, so can deal with increased torque loads. This makes them ideal for motorsport applications, but they can be a bit harsh and noisey for road use. The plated diff itself is actually very strong, but the weakest link now becomes the standard crown wheel and pinion. That's why the big boys run 9in rear diffs.
The biggest problem with the standard diff is the planet gears are notoriously weak. As the are based on an open diff with a viscous coupling effectively attached to one end, they still retain two sun and two planet gears. It is these that get munched in big power cars and when people launch the car. Motorsport planet gears are available but even these have their limits, and I personally wouldn't want to run one with much over 400-450 bhp, because my dickhead-like driving style would mean I'd break it frequently.
The plated-type diff like the Gripper and Titan TTM have a 4-planet gear design, so can deal with increased torque loads. This makes them ideal for motorsport applications, but they can be a bit harsh and noisey for road use. The plated diff itself is actually very strong, but the weakest link now becomes the standard crown wheel and pinion. That's why the big boys run 9in rear diffs.
15-03-2010, 01:33 PM
#101
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. Sufficiently so that I am outing the Quaife ATB for one are you all for the Titan diff because of its build quality alone, or its actual working properties?
Was going to get a Gripper myself but interested to hear why you prefer it so much.
Cheers
Dan
15-03-2010, 07:24 PM
#103
PassionFord Post Troll
If it's just fast road use you want, there's nothing really wrong with the standard viscous diff. You can get them re-rated (using different viscousity fluids) to make them behave slightly differently (the last one I had done by Bernie at CTS was spec'd for 'hooning around'! lol)
The biggest problem with the standard diff is the planet gears are notoriously weak. As the are based on an open diff with a viscous coupling effectively attached to one end, they still retain two sun and two planet gears. It is these that get munched in big power cars and when people launch the car. Motorsport planet gears are available but even these have their limits, and I personally wouldn't want to run one with much over 400-450 bhp, because my dickhead-like driving style would mean I'd break it frequently.
The plated-type diff like the Gripper and Titan TTM have a 4-planet gear design, so can deal with increased torque loads. This makes them ideal for motorsport applications, but they can be a bit harsh and noisey for road use. The plated diff itself is actually very strong, but the weakest link now becomes the standard crown wheel and pinion. That's why the big boys run 9in rear diffs.
The biggest problem with the standard diff is the planet gears are notoriously weak. As the are based on an open diff with a viscous coupling effectively attached to one end, they still retain two sun and two planet gears. It is these that get munched in big power cars and when people launch the car. Motorsport planet gears are available but even these have their limits, and I personally wouldn't want to run one with much over 400-450 bhp, because my dickhead-like driving style would mean I'd break it frequently.
The plated-type diff like the Gripper and Titan TTM have a 4-planet gear design, so can deal with increased torque loads. This makes them ideal for motorsport applications, but they can be a bit harsh and noisey for road use. The plated diff itself is actually very strong, but the weakest link now becomes the standard crown wheel and pinion. That's why the big boys run 9in rear diffs.
Seems like quite a few of the big power cars runs the 9" rear end with a VC and a cooler, heat build-up promoting inconsistent behaviour seems the worst bugbear of the VC
31-03-2010, 05:47 PM
#104
PassionFord Post Troll
Total cost for parts new and fitted by CTS comes out at £1390.
Will look forward to the driving reports
Good work Fast Ford
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