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Coupla Hydroboost questions...

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Old Mar 19, 2008 | 03:07 PM
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Default Coupla Hydroboost questions...

How should the pushrod between the MC and Hydro unit be? A "snug" length? X amount longer/shorter than the distance between the MC and Hydro?? I haven't tried the one out of the old vacuum booster yet, just getting prepared for it tomorrow.

Also, has anyone else removed their proportioning valve? I think it was Norval that posted that he had removed his. I wasn't going to remove mine - can anyone chime in with pro's & con's for leaving it there vs removing it?
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Old Mar 19, 2008 | 04:35 PM
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Not sure why the prop valve would need to be removed, but the push rod just needs to be snug. Your stock master should work fine with the Hydrobooster unless it's an odd model from an odd make or model. The '77 and later masters are what's needed for a perfect fit with no need for a different rod or spacer.
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Old Mar 20, 2008 | 07:28 AM
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No propostioning valve into a C3!
there is only a "security" witch this cut leeky circuit but don't have any proportioning fonction (balance beween front and rear)

for hydroboost to make an esay install:

http://img229.imageshack.us/img229/2...8123001cm8.jpg

screw your hydroboost with your pedal assembly with washer of 4mm between pedal assembly and hydroboost support

Ps: as you can see i use the original support of hydrobooster (only cut an edge (down driver side, near fuse box))

hope this help
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Old Mar 21, 2008 | 03:53 AM
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Matt, that hydro unit you sent me ages ago has - what looks like - a rod already fitted. You can see the last maybe 1/8th of an inch of it. The MC I have is a later model type with the shallow hole, so I'm thinking that the rod that's already in the hydro will be ok...

Jerome, I'm not sure what you're getting at mate. I knocked the studs out of my hydro and put them through the firewall from the inside of the car.
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Old Mar 21, 2008 | 07:09 AM
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sorry i you din't understand i wrote it too fast!
i explain washer between hydroboost and pedal assembly to adapt legth of hydrobooster rod!
hope this time is more clear for you!

all my apologies


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Old Mar 21, 2008 | 07:36 AM
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Originally Posted by saudivette
Matt, that hydro unit you sent me ages ago has - what looks like - a rod already fitted. You can see the last maybe 1/8th of an inch of it. The MC I have is a later model type with the shallow hole, so I'm thinking that the rod that's already in the hydro will be ok...

Jerome, I'm not sure what you're getting at mate. I knocked the studs out of my hydro and put them through the firewall from the inside of the car.

Yes you should be fine. Assuming you have the late model master as you say, they'll mate up just fine.
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Old Mar 21, 2008 | 02:02 PM
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What hyroboost works best with the C3. What GM vechical or part number is used????
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Old Mar 21, 2008 | 02:07 PM
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Originally Posted by FatCat Blue 80
What hyroboost works best with the C3. What GM vechical or part number is used????

1994 and 1995 Chevy Astro van and GMC Safari.
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Old Mar 21, 2008 | 02:47 PM
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I got all my lines made up today and think it all looks ok - except for the line out of the hydro into the Jeep box. I screwed the union in (FBM2608 from Hydratechbraking) and it seemed to pull up tight before the union bottomed out on the hydro case??? Anyone seen this before? I haven't had a good look at it yet as it was getting to late by the time I finished up, and of course, the fitting's on the inner side of the hydro unit so I'll have to use a mirror or take the hydro out again...











My wife helping me out...
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Old Apr 21, 2008 | 06:05 AM
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Same thing here and no leak!

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Old Apr 21, 2008 | 08:37 AM
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Originally Posted by jerome1979

Same thing here and no leak!

Ok, but you've just reposted my pic. Did you mean to post a pic of your setup or were you just quoting?
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Old Apr 21, 2008 | 09:08 AM
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I use your picture but on my hydrobooster on outlet pressure line my adapter is like yours (screw dont seat against hydraboost)

hope it's clear and you understand me
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Old Apr 21, 2008 | 10:55 AM
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ok, thanks mate
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