496BBC
Well-known member
Anyone know the flow requirements for both the Hydra-boost and rack and pinion?
Neal
Neal
when i put my hydro boost on .. the guy i got alot of my info from was selling hydro boost kits for all makes of cars ... told me the stock 79 vette pump will work fine ... then i asked about adding a rack and pinion and he said it was not a problem, using the same pump ... i wound up using a remote ps pump for my tall deck motor transplant ... i will look and see if i can find the specs on the pump i ordered from PCS .... you can change the flow and preasure of a stock Gm pump by changing the valve and sping behind the preasure outlet ... but i have no info on what parts to put in or where to get them...
Well I found out that I have a 2.5 gpm and 900psi valve in my pump.
Now the question is were can I find the correct fitting for my needs?
Can I just go by the junk yard and take one apart and rob the fittings form it. The question will be what type of vehicle to look for and what parts will I need to get?
Can I drill the fitting in the pump I have? What will this do for the pressure. Sounds like the pressure and flow are set with different parts in the pump.
Looks like I'm looking for 1200psi with 3 plus gpm flow.
Any help out there is much appreciated.
Neal
Something doesn't sound right. A Hydroboost unit works like a vacuum booster. There is a small nitrogen filled canister that accumulates fluid from the pump when the brakes are not being used (just like a vacuum booster gets it's vacuum "charge" when the brakes are not being used). So there is no demand from the pump when your brakes are depressed, in fact, the supply port is shut off IIRC. This is why a properly functioning Hydroboost will supply assist for 1 or 2 applications of the brake with the engine (pump) off.