Jump to content

Rear Disc Conversion Q´s


Recommended Posts

On my  Manta I have Cossy/4x4 vented discs with Cosworth/Granada calipers, when I fit my Commodore shafts I plan to use Granada 4x4 vented 5 stud discs with the same caliper...think I need to enlarge the stud holes, but need to check...

ps how much did you shorten the Commodore shafts by to fit the Manta axle..

 

Mantareardisc001

  • Like 1
Link to post
Share on other sites
  • Replies 63
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

I mentioned this further up, and I know it may not be much use to some, but forget the old ford calipers as they are rather heavy these days, use mk4 astra alloy rear calipers and discs, they go strai

Cossie calliper's and BMW 318i discs work quite nice as well.

Went for the simple option!! Discs straight on, standard handbrake cable hooks straight up to those callipers and they seem to stop ok (Need it now with the motor in!!) 🙂

Posted Images

I Havent Shortened Them.I Expect them to be Approx 7-8mm too long But I need to Trim about 1.5mm off the Shafts at the Bearing End as I can't Find any Bearings for Std Manta Axle to Commodore Shafts (72mm x 36.5 mm x 21mm) So I'll Machine 1.5mm off them and Can Get 72x35x27 Bearings and I Intend to Make a Spacer Plate of 6mm to fit to the Axle Each Side to make up the Difference.This Will Give me Something to Fabricate a Bracket to for to fit Astra Mk4 Calipers and  it Also Widens the Axle which will help to Fill Out the Arches.

If You Don't Want a Wider Axle like I'm Doing,You'd be Able to Cut the 6mm off the Shafts and Still Have Enough Spline Lenght in the Diff.Also 70x35x21mm Bearings are Readily Available,Which is the Right Depth for the Manta Axle

  • Like 1
Link to post
Share on other sites
  • 7 months later...
  • 3 weeks later...
On 29/04/2020 at 23:37, Jessopia74 said:

What is the od of the flange?
 

I usually just use the Brembo part finder to try and match up.

https://www.bremboparts.com/europe/en/catalogue/size?producttype=Disc&diameter=330&th=28

BMW would be a good starting point I guess for the 5x120, quick look E36 316 compact

 

 

Very good link, I am also looking a vented rear disc with a small offset to fit my 5 stud Commodore shafts....

  • Like 1
Link to post
Share on other sites
39 minutes ago, GTEPETE said:

Very good link, I am also looking a vented rear disc with a small offset to fit my 5 stud Commodore shafts....

Do you know what calipers you will be using yet? Mk4 Astra?

Obviously you are limited to 120mm pcd, so maybe a smaller/earlier bmw front 
 

Link to post
Share on other sites
4 hours ago, Jessopia74 said:

Good thing about bmw discs is already the right pcd too. Like that setup 👍

Went for the simple option!! Discs straight on, standard handbrake cable hooks straight up to those callipers and they seem to stop ok (Need it now with the motor in!!) 🙂

  • Like 2
Link to post
Share on other sites
26 minutes ago, 611 said:

Went for the simple option!! Discs straight on, standard handbrake cable hooks straight up to those callipers and they seem to stop ok (Need it now with the motor in!!) 🙂

Saves  me looking through the catalogue for figments too 😁 I guess it will look quiet oem with original h/brake cable too.

  • Like 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...