NEW '76-'86 Jeep CJ 7 & 8 Hydroboost, Power Brake Booster

$573.77 Buy It Now or Best Offer
free,30-Day Returns

Seller Store sterlingworth16
(2429) 99.1%,

Location: Pilot Point, Texas
Ships to: US,
Item: 301796576559

Returns Accepted:ReturnsNotAccepted
Custom Power Brake:Custom Power Brake
Manufacturer Warranty:No
Manufacturer Part Number:CPB-12
Country/Region of Manufacture:United States

This is a new (not rebuilt) hydroboost and mount set up for a ’76-’86 Jeep CJ vacuum brake booster replacement. It will bolt straight to the existing bolt holes on your firewall. It can be inverted for greater valve cover clearance by simply installing it that way. ***For inverted hydroboost the return nipple will point towards the motor and if you require greater clearance for the return line you can search on ebay for the AN-6 “spittier fitting” and use that to replace the return nipple. When using black rubber return line get a 90* pushlock AN-6 fitting and install that on the return line. If you are using stainless braid line then just use a return line with the 90* AN-6 fitting at the hydroboost end.***Regarding use of replacement return hose fittings on the booster: When the booster is inverted or clocked on the mount for clearance to the motor the return nipple points the hose at the header or into the inner fender depending on the vehicle and set up. If you don’t use a banjo fitting there and use an AN-6 Spittier fitting then you need to know to before you install it to take a #35 drill bit (or 0.110″) and make sure it passes through the orifice before you use it and drill it if it doesn’t. 0.110″ is OEM ID for Bosch return fittings and anything undersize can cause slow pedal return. ***If you have a ’87-’90 or ’91-’95 YJ it will take a different setup so ask about those. ***Please tell me if you have a CJ-10 as I will need to set it up differently. Ask about what I have for the CJ5 or late ’70s CJ7 that uses the earlier square firewall bolt pattern. You surely know how Jeep mixed things up and I want to ship you the correct mount the first time.;) The installed pics are of a Australian customer’s ’83 CJ 10. Please note that the I don’t believe the same style MC he used (’93 Chevy P30 with DRW) will fit under the hood of the CJ7 or 8. His comment following the install was: “Working well , used the master cylinder you said to use and fitted perfectly ! The bests brakes that car has ever had.” Tech, info on building pressure hoses, and pictures of custom hydroboost installations as well as my contact info can be viewed on-line at CustomPowerBrake or BadAspBrakes. ****Allow me to dispel some myths… #1 There simply are no vacuum boosters that will give you the same dramatic increase in line pressure at the caliper that hydroboost will provide. #2 The largest vacuum booster you could possibly fit would only give you about 1,700 psi at the front caliper and that is if you had room to fit it and the engine produced the vacuum it was designed for. If you have a low vacuum motor and a 7″ dual diaphragm booster (like a customer of mine with a built 5.7 Hemi who tested line pressure with a gauge) you will only get 1,000 psi at the front and 800 at the rear calipers. You need about 1,600 psi up front for disc. After installing my hydroboost he tested it at what you can see in my last pic above. Got it? 😉 Thats an increase of 1,400psi at the front caliper at idle. 2,400psi….. yes, your pedal will be lighter;) John’s car is a ’37 Plymouth Tudor and he hauls a trailer for his two Harleys. His comment to me after the installation of the hydroboost was “this thing could stop freight trains”. Thanks for the testing, pics and feedback John! It’s what dispels myths. #3 Installing a hydroboost does not just make your pedal easier to press, ask anyone who has hydroboost installed. I have had a lot of customers tell me that swapping to hydroboost was the best modification they made to their vehicle and should have been the first. Think about it for a minute…. is it really going to help your braking if you switch from 11″ disc to 13″ and go from single piston calipers to four piston if you still are only going to have 1,000 psi at the front caliper when you need at least 1,600 psi? Yes, the braking would improve over what you had but you still don’t have the line pressure and only changing the booster to hydroboost is going to give you 2,400 psi. To my knowledge, not even electric boosters will give you that much pressure and 2,600 psi is obtainable with the right master cylinder. Installation of hydraulically boosted brake systems will increase your line pressure up to a maximum of 2,600psi (as tested and I have a gauge reading to demonstrate pressure at idle) depending on the master cylinder you select and the other components in your brake system. Consequently your brake system must be in top shape to handle increases from normal 1,100-1,600psi. Many power brake master cylinders can be used on this hydroboost and the iron ’77-’80 Corvette power brake MC is a frequent choice. ***Be sure the power steering pump you are using will be adequate to run with hydroboost which typically require 1,300-1,500psi and 2.5-3.5gpm. This hydroboost is not designed to be operated with power steering pumps exceeding 1,500psi. It is compatible with ABS. If you have a different vehicle you’d like to set up with a custom firewall mount just shoot me a message and I’ll work with you if I think it can be done. The bolt spacing for the master cylinder is 3.4″ and if you need a custom adapter to fit a 3.2″ spaced Dodge or Ford master cylinder I have those available, and I have used master cylinders available also. Just ask….;) I can help you sort out what you need for your hot rod or built rock buggy using the largest dual piston calipers. I have set up C3 Corvettes, Chevy S10s, Toyota FJ 40s, Jeep Commandos, Wranglers, CJs, and the M715 as well as the full size Jeep Wagoneers, Cherokees and J series trucks, Scout II, Ford Ranger, F150, ’67 Camaro, ’70-’77 Camaro, and I’ve currently mapped out a ’57 Buick, ’55-’57 Chevy and Jeep TJ, ZJ, MJ, XJ, ’70 Chevelle, Toyota T100/Tacoma. Shipping is quoted for the US only. I have shipped these to Austria, Slovenia, Thailand, Mexico, Russia, New Zealand, Brazil, Panama, Latvia, Spain, Turkey, Sweden, Quatar, Norway, France, Italy, Germany, Denmark, Dubai, UK, Canada, Greenland, Iceland, Australia and South Africa, but please contact me prior to purchasing so we can work out acceptable shipping arrangements. I will provide you with a shipping quote for you to consider PRIOR to your purchase. I will only accept paypal on purchases outside the US. I request that in the text of your message you indicate the country and postal code you wish the unit shipped to. Regarding feedback, I will leave feedback for the purchaser after I have received feedback. Disclaimer: Hydro-Boost is a registered ® trademark of the Robert Bosch Corporation. All products herein are modifications and not directly or indirectly affiliated with the Robert Bosch Corporation unless noted. Custom Power Brake (aka Sterlingworth16) is not affiliated with Bosch. All products herein are designed for off road use only and are not DOT certified. The process to meet DOT certification is extremely lengthy. To my knowledge, no other aftermarket modifier of hydroboosts has their units DOT certified for street use either. Any purchase of product and/or use of tech related to these products constitute the understanding that brake line pressure will be dramatically increased and the acceptance of liability or risk related to use. Key words: hydrobooster, hydro boost, hydro-boost, hydro-booster, hydraulic booster, brake booster, astro van, safari van, Jeep CJ, Jeep YJ, Jeep Wrangler, Toyota FJ40, Jeep TJ, ’55, ’56,’57 Chevy, ’57 Buick.

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