best diff for 2wd cosworth
09-03-2010, 08:07 AM
#43
PassionFord Post Troll
If you manage to do it let us know though - sounds an interesting project
After you've set all the plates etc I think it then has to be laser welded shut
09-03-2010, 08:16 PM
#44
I think your biggest problem may be getting hold of the special silicone gel to go inside the VC once you have cut it open - perhaps Bara or CTS would advise you. I'm not sure where you'd get new seals and uprated nickel plates ( if you wanted more 'locking action' ) from. I'm no expert on this ( Marco Polo might be able to tell you more ) but I've never seen a rebuild manual for a VC.
If you manage to do it let us know though - sounds an interesting project
After you've set all the plates etc I think it then has to be laser welded shut
If you manage to do it let us know though - sounds an interesting project
After you've set all the plates etc I think it then has to be laser welded shut
09-03-2010, 08:26 PM
#45
cossie fan (unluckerly)
i take it you have never driven a car with a welded diff then?
i used the FF drift shitter every day for a year to drive to work and back, 70 miles a day...
the only time you notice it is when making a tight turn ie parking, or when the arse lets go and you dont crash like you would have in a std 2wd cos lol
i used the FF drift shitter every day for a year to drive to work and back, 70 miles a day...
the only time you notice it is when making a tight turn ie parking, or when the arse lets go and you dont crash like you would have in a std 2wd cos lol
09-03-2010, 08:49 PM
#48
cossie fan (unluckerly)
if u class banging and clunking and skipping about on loose sufaces as ok in your everyday car than yes mate it is lol. But as i dont and the saff is just a toy it dosent bother me as i have another car
09-03-2010, 09:02 PM
#51
cossie fan (unluckerly)
no then there must be something wronge with it from new when i got it from gripper mate! And what about all the other times people post saying there gripper diffs bang and clunk at low speeds. I was told by gripper it would be noisey over a normal diff and its set up for fast road use!
Last edited by ajamesc; 09-03-2010 at 09:03 PM.
09-03-2010, 09:04 PM
#52
no then there must be something wronge with it from new when i got it from gripper mate! And what about all the other times people post saying there gripper diffs bang and clunk at low speeds. I was told by gripper it would be noisey over a normal diff and its set up fpr fast road use!
yes there will be slight noise, more so when new, as the plates wear in it should be all but silent, if not you have either got the wrong ramp angles in it, or the incorrect pre-load.
I have had four or so of gripper (when Tom had it) and had only one set up wrong.
09-03-2010, 09:06 PM
#53
The reason the Grippers grind and clunk is that Tom Seal (Gripper) changed some of the washers for thicker ones to make them stronger and it pushes all the settings higher so the diff settings need to be alot lower but he will not listen if you tell him.
Think road should be about 75nm and when Marco tested his as it was set the rate was 110nm hence the noise being louder.
Think mine is set wrong as it is very noisey either that or i have damaged it some how as it was never like this till i took it to Pod then had the diff rebuilt after and still noisey
Think road should be about 75nm and when Marco tested his as it was set the rate was 110nm hence the noise being louder.
Think mine is set wrong as it is very noisey either that or i have damaged it some how as it was never like this till i took it to Pod then had the diff rebuilt after and still noisey
Last edited by Gav Diamond; 09-03-2010 at 09:08 PM.
09-03-2010, 09:11 PM
#54
The reason the Grippers grind and clunk is that Tom Seal (Gripper) changed some of the washers for thicker ones to make them stronger and it pushes all the settings higher so the diff settings need to be alot lower but he will not listen if you tell him.
Think road should be about 75nm and when Marco tested his as it was set the rate was 110nm hence the noise being louder.
Think mine is set wrong as it is very noisey either that or i have damaged it some how as it was never like this till i took it to Pod then had the diff rebuilt after and still noisey
Think road should be about 75nm and when Marco tested his as it was set the rate was 110nm hence the noise being louder.
Think mine is set wrong as it is very noisey either that or i have damaged it some how as it was never like this till i took it to Pod then had the diff rebuilt after and still noisey
09-03-2010, 09:14 PM
#55
Well im not 100% the noise on mine is all diff but will know once the new gearbox goes in so if its still noisey i know i have damaged the diff, just Bara said he couldn't see anything wrong but it seems like the noise is from the back so assumed diff.
09-03-2010, 09:18 PM
#57
cossie fan (unluckerly)
all the post i have seen on gripper diffs say they are clunky and noisey at low speeds! And gripper them selfs say its how the diff is When i picked it up and before i had a long chat too them about the diff as i wasent shore about them and i was after a quaife but couldent be assed with the wait as they were waiting for bits to be machined they were fully aware of the fact it was going in a road car and told me that it would be noisey but as i dont use the car much im not really bothered Im well pleased with it i think its a great diff and gives me good grip on the road with around 500lb ft!
09-03-2010, 09:23 PM
#58
all the post i have seen on gripper diffs say they are clunky and noisey at low speeds! And gripper them selfs say its how the diff is When i picked it up and before i had a long chat too them about the diff as i wasent shore about them and i was after a quaife but couldent be assed with the wait as they were waiting for bits to be machined they were fully aware of the fact it was going in a road car and told me that it would be noisey but as i dont use the car much im not really bothered Im well pleased with it i think its a great diff and gives me good grip on the road with around 500lb ft!
they run rings around the ATB efforts for grip/traction
09-03-2010, 10:37 PM
#59
PassionFord Post Troll
To be honest I always thought the standard 2wd 7.5" diff and 4x4 7" rear diff were viscous coupling type Limi slip diffs personally but I won't argue with you about it as I can only speak for my own car
09-03-2010, 10:42 PM
#60
PassionFord Post Troll
Originally Posted by Mike1
I think your biggest problem may be getting hold of the special silicone gel to go inside the VC once you have cut it open - perhaps Bara or CTS would advise you. I'm not sure where you'd get new seals and uprated nickel plates ( if you wanted more 'locking action' ) from. I'm no expert on this ( Marco Polo might be able to tell you more ) but I've never seen a rebuild manual for a VC.
If you manage to do it let us know though - sounds an interesting project
After you've set all the plates etc I think it then has to be laser welded shut
If you manage to do it let us know though - sounds an interesting project
After you've set all the plates etc I think it then has to be laser welded shut
I'll bear your tips on answering posts in mind for the future though.....
10-03-2010, 07:19 AM
#61
Can be diy built if you have the correct tools and know what you are doing.
Steve
PS Tom is still majority share holder of Gripper
u need one of these too to build a stronge 7 1/2 inch diff a shot peened and super finished cwp i had mine done by hewland engineering
10-03-2010, 07:52 PM
#65
cossie fan (unluckerly)
i gave the guys who did it a drink mate lucky for me a mates dad works there so i got it done for 50 pounds but i think its around 200 at most places that do it
11-03-2010, 07:39 AM
#67
You can buy the Quaife WITH output flanges - part number is QDF14ZC/S (7˝")
.As has been said, the new Titan VC diff is the one to go for in my opinion - Bara who builds mine was full of praise for the quality of these compared to the Gripper
.The Titan is also a plated style Limited Slip Diff, but rather than using steel on steel plates like most other LSD manufacturers use, they use a coating technology they have called "Sintrak". This coating is revolutionary, as not only are the diffs a lot quieter in action (so are more suited to road cars), they also make the diffs more durable, meaning plate wear and associated pre-load drop-off are kept to a minimum. The coating on the clutch plates also means that more torque is transferred across the axle than a normal steel plated diff (therefore getting more power down to help exiting the corners) - so an improvement in every regard.
Currently the diffs have been used in Caterham R500's, various BMW's for Britcar/old touring cars, Volvo rally cars, Ford Rally Cars (mainly early Escorts). One of the Britcars is running over 600BHP, so should cope okay with most Cossie outputs
. Obviously it still uses the OE CWP, so these will still be the weak link like ALL these diffs.
The diffs are also available in various lock-ups, so you can even change it's actuation from a one way to a two way diff (where it locks up on deceleration as well).
I'm impressed enough to be putting one on my own car.
Currently the diffs have been used in Caterham R500's, various BMW's for Britcar/old touring cars, Volvo rally cars, Ford Rally Cars (mainly early Escorts). One of the Britcars is running over 600BHP, so should cope okay with most Cossie outputs
. Obviously it still uses the OE CWP, so these will still be the weak link like ALL these diffs.The diffs are also available in various lock-ups, so you can even change it's actuation from a one way to a two way diff (where it locks up on deceleration as well).
I'm impressed enough to be putting one on my own car
.
11-03-2010, 07:57 AM
#68
PassionFord Post Troll
Originally Posted by Mike1
It would have done I'm sure, I thought you'd appreciate a bit of background info as it seemed you were keen to find out about them
I'll bear your tips on answering posts in mind for the future though.....
I'll bear your tips on answering posts in mind for the future though.....
if you had said that in the first place i wold have been happy, but you didnt.
a reply like 'if you have to ask, then you cant do it' is not helpful to anyone.
how are people supposed to learn things if no one is willing to give any info
However, as you were saying you didn't have a Viscous Coupling type (VC) in your standard Sapphire rear casing I assumed you had a different set-up so it would have been irrelevant
Bit more general info on diff types here if anyone wants a read
https://passionford.com/forum/genera...ripper-or.html
Some info on Viscous rebuilds here
https://passionford.com/forum/genera...cous-diff.html
Last edited by Mike1; 11-03-2010 at 08:55 AM.
11-03-2010, 10:46 PM
#73
, i,m sure someone will explain the way it works i havent bothered. i have never stripped one i just throw them away when brokenbara showed me the stuff he uses to do the viscous units...its like the stuff used in silicone tits
my 9" diff is a viscous unit set at 520nm
12-03-2010, 07:05 AM
#76
PassionFord Post Troll
