Home » Public Forums » GMCnet » What is the most appropriate Hydoboost Doner?
| What is the most appropriate Hydoboost Doner? [message #274530] |
Sun, 29 March 2015 01:51  |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Hello All:
In Alberta, the Weather has been unseasonably Warm for the last few weeks. The snow is mostly melted and there are many puddles everywhere. Im loving it because, normally I would be complaining about the piles of snow and Cold Weather. I have been taking advantage of the Great weather and doing my version of a few "rounds of Golf" (Walking through the local Pick & Pull and Men's malls)
I Noticed a couple Chevy and GMC trucks with Hydo boost units that look to be pretty clean.
With the higher boost of a hydroboost it seems to me that it would be a better option to use in conjunction with a p30 Master cylinder and 6 disc brakes. For the reasonable price that they charge, I would like to pull one and have it ready to use when I need it. ( I currently have a new sensitized booster to use when I install everything)
What are good candidates for harvesting the hydroboost unit??
For those of you that have changed over to a Hydroboost system, What should I ensure I get from the units?
Best Regards
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274531 is a reply to message #274530] |
Sun, 29 March 2015 04:31  |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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this is not plug-n-play
you might want to read here
http://gmcmotorhome.info/list.html
for the extensive mods required
erf
On Sat, Mar 28, 2015 at 11:51 PM, John Heslinga wrote:
> Hello All:
>
> In Alberta, the Weather has been unseasonably Warm for the last few weeks.
> The snow is mostly melted and there are many puddles everywhere. Im loving
> it because, normally I would be complaining about the piles of snow and
> Cold Weather. I have been taking advantage of the Great weather and doing my
> version of a few "rounds of Golf" (Walking through the local Pick & Pull
> and Men's malls)
>
> I Noticed a couple Chevy and GMC trucks with Hydo boost units that look to
> be pretty clean.
>
> With the higher boost of a hydroboost it seems to me that it would be a
> better option to use in conjunction with a p30 Master cylinder and 6 disc
> brakes. For the reasonable price that they charge, I would like to pull
> one and have it ready to use when I need it. ( I currently have a new
> sensitized booster to use when I install everything)
>
> What are good candidates for harvesting the hydroboost unit??
>
> For those of you that have changed over to a Hydroboost system, What
> should I ensure I get from the units?
>
>
> Best Regards
> --
> John and Cathie Heslinga
> 1974 Canyonlands 260
> 455, Manny tranny and 1 ton, 3:70 LS,
> TC4W "Too Cool For Words"
> Retirement Projects Galore
> Edmonton, Alberta
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274625 is a reply to message #274542] |
Tue, 31 March 2015 00:19 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Thank You So Much Gene, Billy, and John.
It is clear from the links you have given me: That a hydroboost conversion is not a straight forward change over. I can see that the Stone conversion kit is certainly an Elegant, well done, and easier option when a lot of money is burning holes in a pocket. (Mine has already burned through and long gone  )
A Hydroboost unit removed from a vehicle that is in "Pick and Pull" in the Edmonton Yard is $22.00 Canadian.(17.25 US) A long ways from $1300.00 US for the Stone Kit. (All due respect for to those parties involved in maketing the unit.) This gives me a lot of time to fabricate, change and adapt. (I was aware that there would be some involved work because I had seen some of the information already.) I kind of expected that an AstroVan Unit probably might not work and I should look for a more appropriate donor. The one thing that I see for sure is that I would have a good core to have custom updated if I needed.
However I still have no answer to my question.  (What should I look for??) Both Hydroboost units I spotted were in full size trucks. one a 1994 and not sure of the other year. (looks to be about the same vintage) (I was hoping That I would know what to look for before I went there again.)
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274647 is a reply to message #274636] |
Tue, 31 March 2015 10:13 |
Neil
Messages: 271
Registered: July 2007
Location: Los Angeles and Magalia, ...
Karma: 1
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Senior Member |
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I have a question for the proponents of hydroboost systems:
If the engine dies, are you without brakes?
I have a sensitized booster and a vacuum pump so that when (not if) the engine dies I still have brakes.
Can the hydroboost use some sort of pressure reservoir? if not, that would be a big issue for me.
Neil
76 Eleganza now sold
Los Angeles
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274650 is a reply to message #274647] |
Tue, 31 March 2015 10:42 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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The hydroboost should give you three or four brake applications after an engine/belt failure.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: What is the most appropriate Hydoboost Doner? [message #274652 is a reply to message #274530] |
Tue, 31 March 2015 10:48 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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Neil:
The booster has a nitrogen accumulator so there wre about 2 more applications after no engine. About the same as vacuum.
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: What is the most appropriate Hydoboost Doner? [message #274654 is a reply to message #274530] |
Tue, 31 March 2015 10:55 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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In the mid 90s I bought a new 64 pass Bluebird school bus on a GMC chassis. It had hydroboost Disk brakes. It had an electric pump to take over when the engine failed or was not running. I did not take note as to what it looked like then because i assumed it was basicly the same as other GM units. But it might be interesting now to find out.
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274655 is a reply to message #274652] |
Tue, 31 March 2015 11:01 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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While we are on the subject of braking systems, none of them will leave you
without brakes if the engine quits. What you do lose, is vacuum boost or
hydraulic boost to the stock or P-30 hydraulic master cylinder. The brake
pedal linkage is not designed for manual application without boost, so an
enormous amount of pedal effort is required to bring a rolling coach to a
stop. More so when rolling backwards. All boosted systems still have
hydraulic systems intact and separate from the boost source, regardless if
it is vacuum, hydraulic, or air pressure. Still plenty scary in a panic
though.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Tue, Mar 31, 2015 at 8:48 AM, John Heslinga wrote:
> Neil:
>
> The booster has a nitrogen accumulator so there wre about 2 more
> applications after no engine. About the same as vacuum.
>
> --
> John and Cathie Heslinga
> 1974 Canyonlands 260
> 455, Manny tranny and 1 ton, 3:70 LS,
> TC4W "Too Cool For Words"
> Retirement Projects Galore
> Edmonton, Alberta
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: What is the most appropriate Hydoboost Doner? [message #274669 is a reply to message #274654] |
Tue, 31 March 2015 14:30 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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John Heslinga wrote on Tue, 31 March 2015 09:55In the mid 90s I bought a new 64 pass Bluebird school bus on a GMC chassis. It had hydroboost Disk brakes. It had an electric pump to take over when the engine failed or was not running. I did not take note as to what it looked like then because i assumed it was basicly the same as other GM units. But it might be interesting now to find out.
Are you sure you're not thinking of a Powermaster?
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274671 is a reply to message #274669] |
Tue, 31 March 2015 14:52 |
Dave Mumert
Messages: 272
Registered: February 2004
Location: Olds, AB, Canada
Karma: 0
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Senior Member |
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Bosch makes unit called Hydro-Max, some are available with a remote reservoir, master cylinders come in 1.75v inch or 2 inch.
Delco makes a similar unit called a Hy-Power.
I believe medium duty trucks are now required to have a dual braking system so if they use hydraulic brakes they need an electric
backup pump.
Dave Mumert
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Bob de Kruyff
> Sent: Tuesday, March 31, 2015 1:31 PM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] What is the most appropriate Hydoboost Doner?
>
> John Heslinga wrote on Tue, 31 March 2015 09:55
>> In the mid 90s I bought a new 64 pass Bluebird school bus on a GMC
>> chassis. It had hydroboost Disk brakes. It had an electric pump to
>> take over when the engine failed or was not running. I did not take note as to what it looked like then because i assumed it was
> basicly the same as other GM units. But it might be interesting now to find out.
>
> Are you sure you're not thinking of a Powermaster?
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274672 is a reply to message #274625] |
Tue, 31 March 2015 15:34 |
GMC.LES
Messages: 505
Registered: April 2014
Karma: -2
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Senior Member |
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John,
Just in case you haven't already discovered this in your research, there are several different configurations of Hydro-boost units. I don't recall the precise variations, and don't have the info readily at hand, but I do recall that there are imperial and metric versions with regards to the hydraulic line connections. There are also different MC mounting dimensions, different accumulator capacities, different boost ratios, etc. The differences revolve mostly around year of manufacture, but some features were specific to certain models and vehicle brands. Selecting a suitable unit that works best in a GMCMH may not be all that straight forward. I seem to recall during my research that to get the features that best matched our requirements, it would require combining parts from several different units. I personally started with a unit from a late 90's diesel dodge pickup, but can't remember why I chose that particular unit, and the project is far from finished. Google is your f
riend, and there is an enormous amount of Hydro-boost related info out there, some good, some bad. Read till your head hurts, then read some more. You'll eventually come to a conclusion.
Les Burt
Montreal
'75 Eleganza 26'
The EWIP (Eternal Work In Progress)
> On Mar 31, 2015, at 1:19 AM, John Heslinga wrote:
>
> Thank You So Much Gene, Billy, and John.
>
> It is clear from the links you have given me: That a hydroboost conversion is not a straight forward change over. I can see that the Stone conversion
> kit is certainly an Elegant, well done, and easier option when a lot of money is burning holes in a pocket. (Mine has already burned through and long
> gone ;) )
>
> A Hydroboost unit removed from a vehicle that is in "Pick and Pull" in the Edmonton Yard is $22.00 Canadian.(17.25 US) A long ways from $1300.00 US
> for the Stone Kit. (All due respect for to those parties involved in maketing the unit.) This gives me a lot of time to fabricate, change and adapt.
> (I was aware that there would be some involved work because I had seen some of the information already.) I kind of expected that an AstroVan Unit
> probably might not work and I should look for a more appropriate donor. The one thing that I see for sure is that I would have a good core to have
> custom updated if I needed.
>
> However I still have no answer to my question. :) (What should I look for??) Both Hydroboost units I spotted were in full size trucks. one a 1994
> and not sure of the other year. (looks to be about the same vintage) (I was hoping That I would know what to look for before I went there again.)
> --
> John and Cathie Heslinga
> 1974 Canyonlands 260
> 455, Manny tranny and 1 ton, 3:70 LS,
> TC4W "Too Cool For Words"
> Retirement Projects Galore
> Edmonton, Alberta
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] What is the most appropriate Hydoboost Doner? [message #274966 is a reply to message #274535] |
Sat, 04 April 2015 08:38 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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The coach formerly owned (and extensively modified) by Ken Rose showed up
at Patterson with VERY serious brake problems. It had apparently been
attacked by a shadetree hacker after Ken's demise. The weird master
cylinder attached to it (which came nowhere near fitting) was held by about
2 threads on each stud. After installing a MC that actually fit, the
owner gave up because of other concealed problems. Bob Stone arrived with
one of his kits. That apparently went on without any difficulty and the
owner reported that it worked well. Since I didn't participate in the work
nor get to check it out afterward, that's all I can report.
I've wanted Hydroboost for years, but now I've screwed up the chances of
installing one by the design of my new dash -- wires and duct work managed
to intrude into the space I thought I was leaving for HB. I've asked Bob
to investigate the possibility of a HB installation which ALL takes place
forward of the firewall -- regardless of what happens to the "hood". I'd
rather have a wart out there than rebuild my dash. :-)
Ken H.
On Sun, Mar 29, 2015 at 9:51 AM, Billy Massey wrote:
> There is a rather new kit on the scene:
> http://www.bdub.net/Hydroboost-Stone.pdf
>
> bdub
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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