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Starting a father son project on a 65 with a 6 cylinder automatic transmission.
The car has drums with power brakes and a new booster with a 2 bowl resevoir.
Question: The booster is getting its vacuum from a T connection off the PCV valve. One of the first projects will be to convert it to disc brakes in the front, but for now I would like to know if the vacuum is correct. I don't think it is, but I am not sure what other sources of vacuum I can use since it has a 1 barrel carb.
Any help appreciated.
I am looking forward to working on this with my son. He has already learned a good lesson on how not to bloody his knuckles when we replaced the exhaust manifold last weekend.[IMG][IMG][/IMG][/IMG]
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The car has drums with power brakes and a new booster with a 2 bowl resevoir.
Question: The booster is getting its vacuum from a T connection off the PCV valve. One of the first projects will be to convert it to disc brakes in the front, but for now I would like to know if the vacuum is correct. I don't think it is, but I am not sure what other sources of vacuum I can use since it has a 1 barrel carb.
No, it is not correct, and will give you insufficient vacuum. There are a number of disc brake kits available for 4-bolt 6-cylinder cars now.
Joe: Nice of you to post your brake setup, but won't help the original poster since you don't have powerbrakes. you are missing the booster and won't need that vacuum hookup
cookstang: welcome to the forums.
I agree with 2+2, the valvecover hookup will "get rid of" all the manifold vacuum you produce. there will be nothing left over (can you say that really for vacuum?) for the brake booster.
I don't know if you can make head and toe of the illustration that 2+2 sent.
In your case (6cyl) you attach the hose from brake booster to a hardline that is going straight to the intake manifold.
You might have a t-piece in there so other components can use the vacuum as well, but trhe only one I'd share with my brakes would be the vacuum modulator for the automatic transmission. just like in the picture if you have one.
I'd say your next question should be (and I don't know): where should I hook the PCV at valve cover to (is there even a PCV there). I don't have experience on the I6.
Anyway, don't share the precious vacuum for the booster with anything if you can avoid it
__________________
1964 1/2
302ci, Edelbrock RPM heads and cam, 650 speed demon, Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back. http://www.gascc.ie
I don't know if you can make head and toe of the illustration that 2+2 sent.
In your case (6cyl) you attach the hose from brake booster to a hardline that is going straight to the intake manifold.
You might have a t-piece in there so other components can use the vacuum as well, but trhe only one I'd share with my brakes would be the vacuum modulator for the automatic transmission. just like in the picture if you have one.
I'd say your next question should be (and I don't know): where should I hook the PCV at valve cover to (is there even a PCV there). I don't have experience on the I6.
Anyway, don't share the precious vacuum for the booster with anything if you can avoid it
Here's a pic showing the connection for the power brake. The brass fitting below the carb, a single connector on auto trans cars (and plugged on manual trans) is replaced by a T fitting, compare this with the drawing.
The PCV connects to the rear of the valve cover, and to a fitting on the carb spacer pointed toward the battery. The upper photo, above, has the PCV hose routed incorrectly, probably because it's generic straight hose, not the proper moulded type, which is available. The lower photo shows it routed correctly.
Joe: Nice of you to post your brake setup, but won't help the original poster since you don't have powerbrakes. you are missing the booster and won't need that vacuum hookup
Finally getting around to fixing this. Got delayed by installing a new radiator, water pump, etc.
I am having a hard time finding the vacuum fitting for the manifold that 2+2 posted in his photo. The fitting is the L shaped fitting that threads into the manifold. No luck in the local auto parts (there are only two parts stores nearby and neither is very good).
Anybody know where I might be able to order one? I havent had much luck with the usuals ( CJ Pony parts, NPD, etc.) Any help would be appreciated.
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Brake vacuum on a 6 cylinder
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