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#1 |
Registered User
![]() Join Date: Jul 2006
Location: Pittsburgh, PA
Posts: 204
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Difference between Hydroboost units?
It there any difference between most hydro boost units available in a junk yard? I mean, if I can adapt it to the firewall, and use the correct M/C, I can use anything I'd like, correct?
What is the deal with some of the hydroboost units from SUVs having a larger accumulator cylinder? What is the purpose of it? It is work considering (or avoiding?) Thanks
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Project Family Values Build Thread Vehicles/Projects: -1971 C10 SWB Fleetside! Gathering parts now, will begin frame-off resto soon... Pleasure in the job puts perfection in the work. -Aristotle |
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#2 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,634
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Re: Difference between Hydroboost units?
there are differences...i cant list and dont know all of them....just get a complete unit from whatever you choose...i know pushrods seem to be a issue ,so its better to get it complete
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#3 | |
Registered User
![]() Join Date: Jul 2006
Location: Pittsburgh, PA
Posts: 204
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Re: Difference between Hydroboost units?
Quote:
I guess the basis of my question was if there was a "better" application than another to seek for the swap. Thanks
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Project Family Values Build Thread Vehicles/Projects: -1971 C10 SWB Fleetside! Gathering parts now, will begin frame-off resto soon... Pleasure in the job puts perfection in the work. -Aristotle |
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#4 |
Post Whore
![]() ![]() Join Date: May 2015
Location: Alabama
Posts: 14,634
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Re: Difference between Hydroboost units?
the rod between the master and the boost is the one...
what are you wanting to put it on? ive got one on my c30 and love it ive also put one on my IH build and it belongs to a c20-30 series truck from the 80s...I got this one mainly based on the IH being a 3/4ton I know some guys use them from astro vans on the AD trucks
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver |
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#5 |
Registered User
![]() Join Date: Jul 2006
Location: Pittsburgh, PA
Posts: 204
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Re: Difference between Hydroboost units?
It is going on a 1971 C10 2wd. The truck has manual brakes now. I was going to have an expense to go to power either way, so I figured I'd just go strait to hydro
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Project Family Values Build Thread Vehicles/Projects: -1971 C10 SWB Fleetside! Gathering parts now, will begin frame-off resto soon... Pleasure in the job puts perfection in the work. -Aristotle |
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#6 |
Registered User
![]() Join Date: Jun 2003
Location: West Valley City, Ut
Posts: 311
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Re: Difference between Hydroboost units?
Ive used both, 1 ton hydro and astro van. Both work great. Just make sure you get the parts all from one donor. ie van or 1ton.
Dwayne
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72' GMC Suburban 10 1/2" of Lift, 40" Tires! Waiting for restoration ![]() 67' Chevy, What to do??? And Bad Ass American Bulldogs! |
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#7 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Difference between Hydroboost units?
I have an Astro unit installed on my truck. I did notice that the accumulator is twice as long on a newer Suburban in the shop.
My guess is that it allows more power applications of the brakes without hydraulic pressure in an emergency.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#8 | |
Registered User
![]() Join Date: Jul 2006
Location: Pittsburgh, PA
Posts: 204
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Re: Difference between Hydroboost units?
Quote:
The Master bore is 37mm (1.45"). Wouldn't this yield a very stiff pedal, all other things being equal?
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Project Family Values Build Thread Vehicles/Projects: -1971 C10 SWB Fleetside! Gathering parts now, will begin frame-off resto soon... Pleasure in the job puts perfection in the work. -Aristotle |
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#9 |
Collector of Projects
Join Date: Apr 2003
Location: Las Vegas
Posts: 3,106
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Re: Difference between Hydroboost units?
Bringing this back up. I have a 2005 hydro-boost setup on my Blazer. I do have upgraded brakes on all 4 corners. My understanding is MC bore size affects pedal firmness and pedal travel inversely proportional.
The biggest aftermarket MC I can find is 1.125 (1 1/8th) compared to the 1.45 (1/ 716th) |
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#10 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Difference between Hydroboost units?
Non-power assisted brakes will have a smaller bore than power assisted brakes to give more hydraulic advantage at the expense of slightly longer travel. Like 1" vs a 1 1/8" or 1 1/4"
A hydro-boosted setup you could probably get away with a larger bore just because of how much assist the hydroboost gives. I am using my OE 1972 3/4 ton MC on my hydroboost.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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