suicide six
New Member
- Joined
- Aug 28, 2005
Anyone step up w/ installed pics of a hydroboost system on a 87 G/N?Whose system did you go with and likes/dislikes of system?Can stock pedal and P/S pump be retained?
87 Hydroboost setup??
- Thread starter suicide six
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captndave737
Well-Known Member
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- Feb 14, 2006
hydraboost
I installed a hydraboost unit from hydratech.com and it was an easy straight forward installation. Awesome brakes with at least double the stopping power of the original powermaster or the vacuum brakes I had converted to.
The stock powersteering pump works fine as does the stock brake pedal.
I'd recomend this conversion to anyone. The brakes are completely predictable, strong (you can lock them with toe pressure) and easily modulated for threshold braking. I still have stock disc's and drums and run 245 55 16" tires.
It's not cheap but after scaring myself with the brakes on this car for 19 years it's well worth it.
I installed a hydraboost unit from hydratech.com and it was an easy straight forward installation. Awesome brakes with at least double the stopping power of the original powermaster or the vacuum brakes I had converted to.
The stock powersteering pump works fine as does the stock brake pedal.
I'd recomend this conversion to anyone. The brakes are completely predictable, strong (you can lock them with toe pressure) and easily modulated for threshold braking. I still have stock disc's and drums and run 245 55 16" tires.
It's not cheap but after scaring myself with the brakes on this car for 19 years it's well worth it.
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turbofish38
Le Pétomane
- Joined
- Dec 3, 2002
If you are using a stock GM HB than you can reuse the powermaster pedal. You can not use the vacuum booster pedal with either the hydro or PM.
The stock pump and reservior will work. You just have to add a tee into the reservior feed hose.
The stock pump and reservior will work. You just have to add a tee into the reservior feed hose.
suicide six
New Member
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- Aug 28, 2005
Captndave thanks for pictures.I still have stock pedal setup and you answered my questions on pump side of setup.How old is your system and what kinda boost can it now hold?I will try finding the link of that company.The other man I spoke to said his setups run around 600 bucks for buick site members.The inital cost may be high compared to vac setup.But when compared to PM parts/units its money well spent.Thanks again I may be getting back w/you on this.
suicide six
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- Aug 28, 2005
suicide six
New Member
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- Aug 28, 2005
Lineset?or no lineset version for 87GN This is for braided lines and other flex tube coorect?Top item P/N is for hydroboost only w/o lines and resevior?
suicide six
New Member
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- Aug 28, 2005
What kinda noise?is it annoying loud?Your right this system seems to be nice.Whens the last time youve heard of hydroboost problems.
suicide six
New Member
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- Aug 28, 2005
What about the mating of hydraboost to firewall?Anything special there?
captndave737
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- Joined
- Feb 14, 2006
hydraboost
suicide six got the website right. I held 10 pounds of boost easily yesterday and i'm sure I could have held more since I only had the brake pedal depressed about half force.
It is a little noisy, a whine that has diminished over time as advertised. I only have about 250 miles on the car since puting it on. I never really braked hard before since it seemed the harder I braked the worse they responded. Now I'm having as much fun stoppin fast as I am blasting at the red lights!
suicide six got the website right. I held 10 pounds of boost easily yesterday and i'm sure I could have held more since I only had the brake pedal depressed about half force.
It is a little noisy, a whine that has diminished over time as advertised. I only have about 250 miles on the car since puting it on. I never really braked hard before since it seemed the harder I braked the worse they responded. Now I'm having as much fun stoppin fast as I am blasting at the red lights!
captndave737
Well-Known Member
- Joined
- Feb 14, 2006
hydraboost
The unit bolts right up to the firewall. You can get one to use with the stock pedal or a vacuum unit. the difference is the aluminum mounting plate is machined at a different angle on one versus the the other.
I went with the stock pedal since it offers a little more leverage.
The unit bolts right up to the firewall. You can get one to use with the stock pedal or a vacuum unit. the difference is the aluminum mounting plate is machined at a different angle on one versus the the other.
I went with the stock pedal since it offers a little more leverage.
captndave737
Well-Known Member
- Joined
- Feb 14, 2006
hydraboost
I got it with the lineset(braided ss aeroquip hoses and fittings). The trouble of chasing down the correct fittings and hoses wasn't worht the slight difference in the amount I would have saved.
A new master cylinder is also a must. The quick take up MC's won't work or mate up properly. There are several options available and Paul at hydratech can help. I chose one from a C5 corvette because it works with the stockrear brakes and the discs I'll eventually be converting to.
The entire installation including bleeding the brakes and hydraboost unit took under 3 hrs. of dilly dallying.
I got it with the lineset(braided ss aeroquip hoses and fittings). The trouble of chasing down the correct fittings and hoses wasn't worht the slight difference in the amount I would have saved.
A new master cylinder is also a must. The quick take up MC's won't work or mate up properly. There are several options available and Paul at hydratech can help. I chose one from a C5 corvette because it works with the stockrear brakes and the discs I'll eventually be converting to.
The entire installation including bleeding the brakes and hydraboost unit took under 3 hrs. of dilly dallying.
suicide six
New Member
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- Aug 28, 2005
Capt thanks again for info,So the HB is noisey due to air being worked out of system?I agree w/getting all lines too.Is there enough line to route away from header,etc.Looking for a clean looking setup.Holding that amount of boost sounds great.
I also notice the 1990-1996 K-5 blazer (3500 series most desiel) comes with a complete bolt-in hyroboost brake. Part store selling for $350.00. i can buy some fitting and Pro Flex (3500 psi) with fitting from jegs and piece this thing together....don`t hold me to this. i have to see of the firewall flange is the same or if inter-changeable....
Noise
There's a moderately high pitched sound that follows engine rpm that is irritating sometimes and sometimes not. I might be ingesting air into the system at times or perhaps heat related. Not sure yet. There is also a loud groan when cornering or pressing hard on the brakes. I'm going to try some other power steering fluids to see if that helps. On the plus side, I didn't push through the lights until I hit about 20 lbs of boost!
There's a moderately high pitched sound that follows engine rpm that is irritating sometimes and sometimes not. I might be ingesting air into the system at times or perhaps heat related. Not sure yet. There is also a loud groan when cornering or pressing hard on the brakes. I'm going to try some other power steering fluids to see if that helps. On the plus side, I didn't push through the lights until I hit about 20 lbs of boost!
suicide six
New Member
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- Aug 28, 2005
Ive been reading up on this unit from above site tech boards and noise seems to be related to air or foam in sysytem that takes miles to aerate.They also reccommend an additive to be used in system to aid on noise.Capt thanks so much for your input and pics.
captndave737
Well-Known Member
- Joined
- Feb 14, 2006
hydraboost
From what I've been told it's a vastly improved system and comparable to those that come on new hummers and other high end suv's, Time will tell.
From what I've been told it's a vastly improved system and comparable to those that come on new hummers and other high end suv's, Time will tell.
