I recently purchased a new Master Cylinder and brake booster setup made by MBM. Can anyone tell me what's the best way to hook up the vacuum to a 223 6 cylinder? Are there any special considerations or things I should be aware of with the vacuum on an inline 6? Thanks.

 

I'm listening. Need to do the same.

 

Yea! What he said.....

 

Is there a fitting or plug in the intake just below the carb.
Here is a pic of the 223 in my '59.
Power brake could be hooked up at the fitting or the plug.

 

I was wondering this too...I see a few fuel pumps for 223's that ran vacuum wipers off of them...like this one.



That is what I was thinking I would have to do.
The intake plug is a good idea too. I'll have to look at mine. Just how much vacuum is necessary to make the brakes work properly with the booster?

 

Thanks 52 F3. My intake manifold ports were welded over by a PO. I will probably drill and tap. I assume regular vacuum lines will work. Do you know what amount of vacuum the 223 generates?

 

I was told you need 16lbs of vacuum for an 8" booster.

 

Not sure about 8" boosters. I am using a 7" booster as I am not rebuilding the truck for heavy hauling or towing. I have reduced the weight of the truck by 400lbs. which helps. I know the 7" requires about 17" of pull otherwise the pedal is hard. I am wondering how much vacuum the 223 GENERATES.

 

Unfortunately no instrument that can measure that small of an amount has ever been built.

Just kidding, try it and it should have enough and if not install a vacuum storage can.

Don’t we have two measurements here, amount of negative pressure (suction) measured in inches of mercury and volume of flow (storage)? Which is why vacuum windshield wipers don’t work going up hill, low vacuum and no storage.

 

Old F1 - totally forgot about the vac can storage. That's why I come here, great ideas and jokes. Gotta love the jokes. Will keep you guys informed on the vacuum that little 6 puts out. If any. lol

 

Many truck owners these days are opting for an electric pump...a little more expensive but you never have to worry about vacuum loss when the engine is under load.

 

The 223 will develope as much vac as any other engine.
Vacuum loss under a load should not be a problem as you would likely not be using the brakes under a load.
Most vacuum boosters use a check valve in the supply line so you have residual vacuum in the booster in the event the engine dies. Also a vacuum resivoir can be plumbed in line between the booster and check valve to give more vacuum reserve.