Ford Sierra/Sapphire/RS500 Cosworth This forum is for discussion of all things pertaining to the Ford Sierra Cosworth.

MK motorsport TCA’s rub off brake discs

Thread Tools
 
Search this Thread
 
Old 18-04-2019, 05:51 PM
  #1  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default MK motorsport TCA’s rub off brake discs



Anyone know why the tca is rubbing off my brake disc?
Old 18-04-2019, 05:53 PM
  #2  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

Old 18-04-2019, 09:01 PM
  #3  
Marc sierra
Advanced PassionFord User
iTrader: (1)
 
Marc sierra's Avatar
 
Join Date: Oct 2006
Location: Netherlands
Posts: 1,889
Received 157 Likes on 143 Posts
Default

The angle between the brake disc and the tca where the ball joint is in is different than standard. The standard one is parallel to the disc and therefor has more clearance.
Old 18-04-2019, 09:15 PM
  #4  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

Wonder if there’s anything I can do mark apart from grind a notch?

Also would incorrectly set tca’s cause the tracking to be miles out? I.e one wheel straight the other turning right
Old 19-04-2019, 08:46 AM
  #5  
Marc sierra
Advanced PassionFord User
iTrader: (1)
 
Marc sierra's Avatar
 
Join Date: Oct 2006
Location: Netherlands
Posts: 1,889
Received 157 Likes on 143 Posts
Default

Other than spacing the brake disc out I don’t really see an option. But I guess yours is a 4x4? In that case the brake bells are already flat so there’s no room to space out either. But be aware that the clearance changes over the suspensoin travel, as the ball joint rotates a bit.

After setting the camber using the adjustable tcas the tracking should be set, as that comes very close. But I guess these are the MK arms with the improved roll center. In that case you also need longer track rod ends to make sure you don’t get a lot of bump steer.
Old 19-04-2019, 10:16 AM
  #6  
Caddyshack
10K+ Poster!!

 
Caddyshack's Avatar
 
Join Date: Mar 2013
Location: Guildford
Posts: 10,841
Received 1,031 Likes on 944 Posts
Default

I think burtons sell longer arms for the steering rack, you simply unwind the old ones. That would help get the track rods to the right length.

is there enough metal on the tca to put a slant on there?


Ie take off the blue bit?

Last edited by Caddyshack; 19-04-2019 at 10:18 AM.
Old 19-04-2019, 12:19 PM
  #7  
Marc sierra
Advanced PassionFord User
iTrader: (1)
 
Marc sierra's Avatar
 
Join Date: Oct 2006
Location: Netherlands
Posts: 1,889
Received 157 Likes on 143 Posts
Default

With longer track rod ends I meant longer in height. Since the ball joint on the tca is moved down the ball joint on the steering arm also needs to be moved down.
Old 19-04-2019, 12:25 PM
  #8  
Caddyshack
10K+ Poster!!

 
Caddyshack's Avatar
 
Join Date: Mar 2013
Location: Guildford
Posts: 10,841
Received 1,031 Likes on 944 Posts
Default

Originally Posted by Marc sierra
With longer track rod ends I meant longer in height. Since the ball joint on the tca is moved down the ball joint on the steering arm also needs to be moved down.
ah, gotcha. I think Mark called it a pin kit when I bought mine.
Old 19-04-2019, 07:29 PM
  #9  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

Hi guys

got my steering sorted just had to set my tca’s and comp struts up all good there

still have the rubbing issue, I’m going to be running a reyland 362mm front brake kit (I’m 2wd) so if the rubbing persists I’ll notch a little bit off like Toby suggests as it’s quite thick steel

regarding track rod ends I’d like some but wasn’t sure if the compbrake ones where a direct fit and of good quality
Old 19-04-2019, 08:36 PM
  #10  
Marc sierra
Advanced PassionFord User
iTrader: (1)
 
Marc sierra's Avatar
 
Join Date: Oct 2006
Location: Netherlands
Posts: 1,889
Received 157 Likes on 143 Posts
Default

If yours is a 2wd, why all the hassle with the special tcas? Fitting a set of 3dr hubs is a lot easier and most likely better as well.

I think the Compbrake track rod ends simply use a bolt instead of the tapered pin which a normal track rod end has. So you would need to drill the knuckles to fit them.

Last edited by Marc sierra; 19-04-2019 at 08:39 PM.
Old 19-04-2019, 08:36 PM
  #11  
robrs2
Advanced PassionFord User
 
robrs2's Avatar
 
Join Date: May 2004
Location: Teesside
Posts: 1,648
Received 18 Likes on 18 Posts
Default

Do you need to lower the roll centre that much? Remove one of the spacers off the top of the pin to move the bearing higher then the outer part of the TCA shold clear.
Old 19-04-2019, 09:10 PM
  #12  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

That was the setting mk recommend to give better roll centre than 3dr hubs but apparently causes bump steer but should be able to sort that with rose jointed rod ends
Old 19-04-2019, 09:22 PM
  #13  
Marc sierra
Advanced PassionFord User
iTrader: (1)
 
Marc sierra's Avatar
 
Join Date: Oct 2006
Location: Netherlands
Posts: 1,889
Received 157 Likes on 143 Posts
Default

Better than 3dr hubs? What would be better? The roll centre can be higher than with 3dr hubs, but I don’t think that will be better. I really like how my 2wd with 3dr hubs drives. Of course it all depends on the ride height.
Old 20-04-2019, 04:08 PM
  #14  
markk
10K+ Poster!!
iTrader: (2)
 
markk's Avatar
 
Join Date: May 2003
Location: Lancs
Posts: 10,638
Received 104 Likes on 96 Posts
Default

Oh dear, another upgrade kit from Mr notorious that doesn't fit.
No change then.
Old 20-04-2019, 04:58 PM
  #15  
ajamesc
cossie fan (unluckerly)
 
ajamesc's Avatar
 
Join Date: Nov 2009
Location: hampshire
Posts: 9,791
Received 435 Likes on 393 Posts
Default

Definitely got to be something wrong there. I’ve his alloy adjustable lower arm/compression strut kit. Fair gap between the arm and disc on that.
Old 20-04-2019, 10:28 PM
  #16  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

I’ve sent him a message to see if he has any suggestions
Old 24-04-2019, 09:42 AM
  #17  
R4N SS
Professional Waffler
iTrader: (6)
 
R4N SS's Avatar
 
Join Date: Jun 2003
Location: ?
Posts: 27,161
Received 147 Likes on 139 Posts
Default

send the kit back
Old 24-04-2019, 12:06 PM
  #18  
Caddyshack
10K+ Poster!!

 
Caddyshack's Avatar
 
Join Date: Mar 2013
Location: Guildford
Posts: 10,841
Received 1,031 Likes on 944 Posts
Default

He is normally happy to amend / adapt stuff if people need it.
Old 25-04-2019, 07:22 AM
  #19  
cossie2
Regular Contributor
 
cossie2's Avatar
 
Join Date: Nov 2004
Location: Croatia
Posts: 286
Received 30 Likes on 30 Posts
Default

Originally Posted by Caddyshack
He is normally happy to amend / adapt stuff if people need it.
...ye right...
Old 25-04-2019, 07:42 AM
  #20  
ajamesc
cossie fan (unluckerly)
 
ajamesc's Avatar
 
Join Date: Nov 2009
Location: hampshire
Posts: 9,791
Received 435 Likes on 393 Posts
Default

Must admit dealings I’ve had with him over supra fitting kit and front lower arm set up he has always been very helpful. Even texting me on a bank holiday over bladed roll bar location measurements
Old 25-04-2019, 02:22 PM
  #21  
Adam-M
PassionFord Post Troll
Thread Starter
 
Adam-M's Avatar
 
Join Date: Feb 2014
Location: Scotland
Posts: 3,120
Received 315 Likes on 288 Posts
Default

Just off the phone to mark he’s going to mill a little bit off the bottom, I’d possibly be able to clear the tca with an aftermarket brake kit but won’t be ordering that till my engines done.

Andy I’ve bought quite a bit off him and everything’s been good mate
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
rustytina
Fiesta RS1800/RS Turbo
5
24-04-2019 03:30 PM
Benni
General Car Related Discussion.
7
21-09-2007 04:02 PM
rand
Ford Sierra/Sapphire/RS500 Cosworth
1
07-08-2006 03:50 PM
Dead and Gone
General Car Related Discussion.
19
02-07-2004 11:18 AM



Quick Reply: MK motorsport TCA’s rub off brake discs



All times are GMT. The time now is 12:32 PM.