Hydra-boost brake install issues in C3 vette


Nice work, trouble shooting when there is multiple problems is always an uphill battle.

 
Been very busy at work,

I'll try and get some pics posted,

The Hydro-boost has sprung a leak and the reservoir check valve seems to be failing so I may end up replacing the booster soon.

I'm checking on a new unit now,

Neal
 
I was able to get a couple pics of the temp diffuser for the discharge header in the remote reservoir. Its SS mesh wrapped around the header to prevent the vortex that was created when the fluid was returning into the reservoir. It works great and prevents the pump from drawing air into the suction line.

The one thing that I’ve noticed is the fluid level is critical with this small of a reservoir. As the fluid gets hot it expands and the level will increase but when it’s cold if not correct the level will be such that it allows the pump to draw air. If the level is to high then when it warms up it will be over full and at times overflow (WOT).

Once I got everything worked out it works fine, just had to get it all sorted out.

If I have anymore issues with it I’ll more then likely purchase the recommended reservoir for this service from PRC. This reservoir has more volume and a filter to help remove the air from the fluid prior to the suction of the pump.





Neal :)
 
legerwn said:
I was able to get a couple pics of the temp diffuser for the discharge header in the remote reservoir.

Neal :)

Temperature diffuser???

Do you mean flow diffuser or something else maybe???

 
That was suppose to be temporary diffuser, not sure if I'm going to leave it that way or come up with something else

Neal :)
 

Ok ...... that makes a lot more sense! LOL! ;) So that's there to break up the bubbles.

Are those tie wraps going to hold up over time or are they temp also ???

How much volume is that SS mesh taking up, maybe you could reduce the number of wraps ?

 
Indycars said:

Ok ...... that makes a lot more sense! LOL! ;) So that's there to break up the bubbles.

Are those tie wraps going to hold up over time or are they temp also ???

How much volume is that SS mesh taking up, maybe you could reduce the number of wraps ?


Well it does that also but mainly its to prevent the fluid from creating a void in the center of the reservoir and causing the suction fitting from drawing in air. The holes in the distribution tube cause the fluid to build up around the outer wall of the reservoir and create a void in the center. The wire prevents the fluid from shooting out and building up around the wall of the reservoir.

Now that I know it will work I'm going to replace the tie wraps with SS tie wire.

I didn't think about the volume the wire was taking up, good idea, I'll reduce the number of wraps and see how it works.

Neal :)
 
legerwn said:
I didn't think about the volume the wire was taking up, good idea, I'll reduce
the number of wraps and see how it works.

Neal :)

The volume it takes up might be trivial, it just hard to estimate something
like this.

You could measure the volume of the SS wire by filling a measuring cup deep
enough to cover the wire. Note the volume on the measuring cup, then place
the wire in the water and take another reading. The difference in the two
readings would be the volume of the wire.

Maybe putting the wire directly in front of the inlet as it enters the tank would
diffuse the directionality of the flow and use less wire.



 

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The inlet/return line from the steering gear is the copper stand pipe in the middle of the wire, this is were all the fluid returns to the reservoir.

The line you marked inlet is the return line form the Hydro-boost, it has little to no flow even when the brakes are used.

Neal :)
 
Yep, the reason I added all the holes was to reduce the pressure at the nozzles but the pressure is still enough to cause issues with the turbulence in the reservoir.

I was thinking of adding more holes but am concerned the added holes at the base of the distribution header would cause issues at the pump suction/reservoir outlet.

Neal :)
 
why not just insert one or two stainless steel scrub pads in the fluid resevior space, around the tube with the holes, that will absolutely control and flow turbulence.
I know we did that in the oil mist accumulators we built on road race cars, for oil control on crank case breathers, and it drastically improved the flow back rates and controlled the formation of oil foam, allowing the oil to flow back with a noticeable reduction in air trapped in the oil.

stainless-steel-standard-weight-scouring-pad.jpg

racebreathera.jpg

BTW we found we could just insert one or two stainless steel scrub pads in the breather tube space, (A and B) as that will absolutely control any air flow turbulence, that tends to drag oil out the breathers and make the engine a oil soak mess.
I know we did that on road race cars, for oil control on crank case breathers, and it drastically improved the flow back rates and controlled the formation of oil foam, allowing the oil to flow back with a noticeable reduction in air trapped in the oil.
occ.jpg

stainless mesh scrub pads also can be used to greatly reduce oil loss in air exiting the crank case thru piston ring blow by or thru the breathers on the valve covers or in an oil catch can, and a catch can can be plumbed to allow trapped oil/air mix to allow oil once the airs separated, in a catch can like device, to drain back into the crank case
 
That is an idea I missed,

I guess the same concern as with the SS wire mesh I have in there right now, volume is critical with this small reservoir.

I may give is a shot to see how it works,

Neal :)
 
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