I am working on a recipe for 15/16” and 7/8” bore aluminum wheel cylinders. I don’t currently have all the details yet. For now, here is the recipe for a 13/16” bore aluminum wheel cylinder.
13/16” bore Aluminum wheel cylinder.
Overall, this will cost you about $45 and save you around 1.8 pounds total.
The great part is that this will be
100% bolt in with
NO mods to the car itself.
You will need the following items:
- (2) Dorman W37696
- (2) Dorman W610152
- (4) 6mm-1.0 x 10mm screws *See NOTE 1
Step one, take the W37696 cast iron wheel cylinder and remove the guts. You will be keeping:
- (2) dust boots
- (2) metal pistons
- (2) piston seals
- (1) spring
Step two, take the W610152 aluminum wheel cylinder and remove all of the guts.
You will be keeping:
- (1) Aluminum cylinder housing
- (1) Bleeder screw.
*
NOTE 1: Now is the perfect time to use a ¼-20 tap on the aluminum wheel cylinder mounting holes. This will allow you to use the original mounting screws from the cast iron cylinder. If you decide NOT to tap these holes, you will need (2) 6mm-1.0 x 10mm screws to mount the aluminum cylinder. Basically, tapping the holes is optional if you don’t want to use metric mounting hardware.
Step three, take the items saved in step one and install them into the parts saved from step two. Essentially, you will end up with the cast iron cylinder guts in the aluminum cylinder housing, it’s that simple. You are now ready to replace your current wheel cylinder with the aluminum one.
Now, all you will need to do is remove your factory cast iron wheel cylinder. Remove the two brake shoe pins from the factory cylinder and insert them into the aluminum wheel cylinder. The aluminum cylinder will simply bolt in where the cast iron cylinder was. Your original brake line fitting will screw right into the aluminum cylinder. The new cylinder’s bleeder screw will be a metric size, but that will be a small price to pay for the reduced weight.
After you have both aluminum cylinders installed, simply bleed the brakes as you would normally.
That is all there is to it. My cost estimate is based on current Rock Auto prices and if you already have 13/16” wheel cylinders, you can save about half the cost by reusing the guts from those.
I don't have any pictures to post just yet, but I will try to get some posted.