Re: Converting to power brakes on CJ-7 - what\'s best?
Matt, I had an e-mail from JAFFER who has just done a conversion on his frame-up, using the GM hydro-boost. Because the newer engines have so little vacuum, it becomes necessary to use hydraulic over hydraulic instead of vacuum over hydraulic. Motordom has realized that high vacuum was retarding gas mileage so they engineered the high vacuum out of these new engines. PLUS...disc brakes take more pressure and with big tires....well,you see what I'm geting at. Click on JAFFER, then go to his Jeep page and see the setup. It's very sanitary. You CAN use vacuum if you have an early engine and drum brakes, and normal tires. Take the vacuum off the big plug in the intake manifold. I like to use a tank, but I'm paranoid, so pay no attention. The early Chrysler products always used a tank, and I thought it was a wise thing to do.
CJDave
Matt, I had an e-mail from JAFFER who has just done a conversion on his frame-up, using the GM hydro-boost. Because the newer engines have so little vacuum, it becomes necessary to use hydraulic over hydraulic instead of vacuum over hydraulic. Motordom has realized that high vacuum was retarding gas mileage so they engineered the high vacuum out of these new engines. PLUS...disc brakes take more pressure and with big tires....well,you see what I'm geting at. Click on JAFFER, then go to his Jeep page and see the setup. It's very sanitary. You CAN use vacuum if you have an early engine and drum brakes, and normal tires. Take the vacuum off the big plug in the intake manifold. I like to use a tank, but I'm paranoid, so pay no attention. The early Chrysler products always used a tank, and I thought it was a wise thing to do.
CJDave
