I finally got around to doing the Dodge master cylinder upgrade. I actually have had the master lying around since last winter. If I knew how easy it was I would have done it a long time ago. I used a ’99 Dodge 2500/3500 master cylinder. Total time was less than three hours and I think it could be done in close to two hours. The brakes are now nothing short of amazing; pedal feel is stiff and all the way up. It feels like stopping a car even with the heavy 38” SX’s. I am using Chevy ½-3/4 ton calipers front and rear.
Total parts for the upgrade:
Master cylinder from Advance $63.00
Brake fluid $ 7.00
¼ x 20 x 2 ½ bolt $ .30
The Advance part
Jeep XJ master on the bottom, Dodge on the top.
Cut the head off the ¼ x 20 bolt and round it off. Removed the Jeep pedal pushrod bolt and installed my bolt. Made couple quick adjustments to get the length right.
Here’s where the Jeep lines ended up.
A little tweaking and the jeep lines are still usable.
Old vs. new. When the hood is closed it just barely clears the cap on the new master.