Rambler American Hydroboost

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   Okay, to reduce pressure -- now the bigger bore MC makes sense! 

A 7" dual diaphragm booster wouldn't fit with the factory type mounting bracket? I'd think it would, but not directly on the firewall. Locating a factory bracket might be tough, but I think the same bracket is used for Americans and big cars -- not 100% sure though. A late 60s Ford bracket is similar and has been used in big cars, I don't know about Americans. Those are a bit tighter under the hood. 

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farna Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676	Post Options Post Reply Quote farna Report Post Thanks(0) Quote Reply Posted: Jan/17/2013 at 4:59am
	Okay, to reduce pressure -- now the bigger bore MC makes sense! A 7" dual diaphragm booster wouldn't fit with the factory type mounting bracket? I'd think it would, but not directly on the firewall. Locating a factory bracket might be tough, but I think the same bracket is used for Americans and big cars -- not 100% sure though. A late 60s Ford bracket is similar and has been used in big cars, I don't know about Americans. Those are a bit tighter under the hood.
	Frank Swygert

FuzzFace2 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10356	Post Options Post Reply Quote FuzzFace2 Report Post Thanks(0) Quote Reply Posted: Jan/17/2013 at 9:42am
	I know we all keep thinking booster on the fire wall but I think some of the older foreign cars and think I have seen older US truck (1955 5 ton chevy?) with boosters down under the floor on the frame? It may be called vacuum asst. braking? And no it does not have the pedal as part of the booster/master assy. Bolted on the frame like I see from Google. Some different information here http://www.hotrodders.com/forum/electric-power-brake-booster-73131.html hydro-vac or Vacuum-Hydraulic http://www.youtube.com/watch?v=keChCevuKk8 I am thinking vacuum-hydraulic set up. It looks like a master is used at the firewall and feeds to a V-H unit on the frame with I think a slave master? I also came across a lot of Honda delete on Google and got thinking some of the “imports” may have a booster small enough to fit in the area where a full size will not? Been a slow day at work ;) Dave ---- I found this that may explain how it works better http://dave78chieftain.zxq.net/HydroVac_brakes.html Edited by FuzzFace2 - Jan/17/2013 at 10:54am
	TSM = Technical Service Manual 75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car

nosigma Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Apprentice Joined: Dec/30/2007 Location: McLean Va Status: Offline Points: 200	Post Options Post Reply Quote nosigma Report Post Thanks(0) Quote Reply Posted: Jul/13/2013 at 1:18pm
	WOW DO I HAVE BRAKES I finished the cam break in and went for a short spin to seat the rings. The brakes are crazy powerful. A bit too light but it feels like the car will stop on a dime. I didnt get to do any real brake tests as I am still focused on ring seating, AFR and couple other items but just driving it around it decelerated a lot faster than it ever did with the disc-drum manual set up no matter how hard I leaned on the pedal when it was manual. The 8.8 rear disc add a lot of stopping power and the 74 Hornet discs bite a lot more than they ever did before. Once I get a couple of other items sorted out I will really lay into it and set the proportioning valve (feels like to much rear right now). As big a pain in the rear as this was I cant overstate how great these brakes feel. John

mitchs66 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Nut Joined: Sep/22/2007 Location: Iowa Status: Offline Points: 368	Post Options Post Reply Quote mitchs66 Report Post Thanks(0) Quote Reply Posted: Aug/27/2016 at 6:57pm
	Hello all, I've been looking for a power brake option for my '66 American and ran across this post. Has anyone else done this? Any more thoughts on this? It doesn't sound to bad, if tbe parts can be rounded up....

farna Members Profile Send Private Message Find Members Posts Add to Buddy List Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19676	Post Options Post Reply Quote farna Report Post Thanks(0) Quote Reply Posted: Aug/28/2016 at 8:41am
	If you have power steering it's a viable option. Of course you could use a PS pump for the brakes without PS. It takes up less room than a traditional vacuum booster. This is rather common in the Jeep world.
	Frank Swygert

tomj Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Jan/27/2010 Location: earth Status: Offline Points: 7544	Post Options Post Reply Quote tomj Report Post Thanks(0) Quote Reply Posted: Aug/29/2016 at 8:27pm
	nice job!
	1960 Rambler Super two-door wagon, OHV auto 1961 Roadster American, 195.6 OHV, T5 http://www.ramblerLore.com