How To Fit LS400 Callipers

[ben_harmer32]

Tools required:

Wrench and sockets. Sizes: 17mm, 14mm

Spanner 14mm, 10mm

Brake line clamps

File

Tin snips or grinder

 

1. First off nice and simple, remove the wheel:

 

 

2. Next up is to remove the 2 x 17mm bolts from the back of the old calliper. I found it easier to turn the wheel to get a better angle and more leverage. Mine were fairly tight and needed some force to start them moving:

 

 

3. With the calliper out the way you can now remove the old brake disc. This will reveal the dust shield:

 

 

4. Now the choice is yours. The new discs are to big for the shields. You can try and remove the dust shield; I believe some have fitted UK spec ones in place. Or as I have you can cut them down to size and bend them a little to kind of work. I used a set of tin snips for this or you could use a grinder if your careful with what’s behind:

 

 

5. Next up is to get your LS400 calliper. On the back you will need to file off a very small amount of metal. This has no impact to the structure of the calliper. This took me less than a minute of filing:

 

 

6. I tested the fitment of the calliper to make sure I’d filed enough, and that it would bolt on ok. You will need LS400 calliper bolts as they are shorter:

 

 

7. I then cleaned and fitted the brake discs and bolted the calliper on properly:

 

 

8. Next up I clamped the brake line as close to the old calliper as I could. I undid the 14mm bolt holding the line to the calliper. I lost a tiny amount of fluid:

 

 

9. I then bolted the line to the back of the LS400 calliper (don't forget the copper washer):

 

 

10. With that done it was time to bleed the calliper. Remove the rubber cover and undo the 10mm bleed screw on the back:

 

 

11. I used a self-bleeding kit which attached to the bleed screw:

 

 

12. Several pumps on the brake pedal until the fluid had no bubbles in it, I then tightened the bleed screw:

 

 

13. Replace the rubber cover:

 

 

14. Check everything is tight, no leaks, then refit the wheel:

 

 

15. Into the engine bay, top up the brake fluid as required:

 

 

16. Time for a slow test drive to make sure everything works. Back home, check for leaks and you are sorted!

 

Hopefully this will help someone. I know it's a basic guide. Was a fairly easy job, I recon about an hour each side.

 

Have to say I was shocked in how much lighter the LS400 callipers are compared to the Supra ones. Can’t wait to get out on the road and see how they perform!

Edited June 16, 2020 by ben_harmer32 (see edit history)

[Josh42]

Nice write up and good to see some technical articles being posted.

 

Thanks Ben

 

 

 

[Swampy442]

Its a good wrote up, but you missed the most important part, when you have to grind parts off a brake calliper. A little bit misleading

[ben_harmer32]

Its a good wrote up, but you missed the most important part, when you have to grind parts off a brake calliper. A little bit misleading

 

you've lost me? Lol

[Lewmc93]

Its a good wrote up, but you missed the most important part, when you have to grind parts off a brake calliper. A little bit misleading

 

you've lost me? Lol

 

I think he may be on about point 5. ?

[ben_harmer32]

I think he may be on about point 5. ?

 

I didn't use a grinder. Just a hand file as stated. It really is a tiny amount of metal. Just so the bolt hole will line up correctly otherwise it hits on it