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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Sun Feb 26, 2012 10:42 pm Post subject: Let's talk brake boosters |
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I've got my brake booster out in order to install the Tick clutch master cylinder. As long as it is out I might as well put in whatever works best.
What is a good upgrade to 3rd gen brake booster? Is it even necessary to upgrade? I know we have some people that have taken very close look at brake options. I want to know what you know (but get it free of effort and in 10 minutes ) |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 5:34 pm Post subject: |
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Ah, come on! This is taking way more than 10 minutes! |
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blue89 Member
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Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 5:46 pm Post subject: |
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What about hyrdaboost? Any of those bolt up to a 3rd gen? |
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Twilightoptics Hardcore (12sec Club)
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Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Feb 27, 2012 6:08 pm Post subject: |
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STAY AWAY FROM HYDROBOOST!
PITA to work on, expensive, diag is an absolute nightmare.
There is no reason to get a different booster. The booster is designed based on the car's pedal assembly and master. You should know this. No reason to change. _________________ A redline a day keeps the carbon away! |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Feb 27, 2012 6:22 pm Post subject: |
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The cool kid option seems to be third gen booster with a fourth gen master. So that's what I did.
Leave hydroboost on trucks where it belongs. The issue with using it on a performance car is that you are often in situations where your wheel is pulled over while you're hard on the brakes. The sudden dropoff in hydraulic pressure in that instance can cause things to go poorly.
Last edited by aaron_sK on Mon Feb 27, 2012 6:29 pm; edited 1 time in total |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 6:29 pm Post subject: |
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I want to be a cool kid. |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 6:32 pm Post subject: |
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Twilightoptics wrote: | You should know this. |
Dude, I don't know **** about cars. You should know this.
But if you ever needs help with Excel spreadsheets and PowerPoint... well, you know where to find me. ![Thumbs up](images/smiles/icon_thumbsup.gif) |
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blue89 Member
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Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 6:56 pm Post subject: |
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Any other good master cylinder options to consider?
blue89 wrote: | If you need pictures, im sure we can post a few. |
You dirty old man. |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 7:05 pm Post subject: |
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Aaron, do you use LT1 or LS1 master cylinder? Any difference? |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Feb 27, 2012 7:11 pm Post subject: |
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I used the master from a pre-98 V6 car, if that's what you mean.
I seem to remember that the LS1 cars had a stepped bore master. Ian would know more about that one than I. |
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blue89 Member
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Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 7:26 pm Post subject: |
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My stock one is totally dry after draining for a decade, so it is perfect time to replace it with no mess, if there is any advantage.
Just browsing a few threads it seems the LT1 needs different threads for the lines and the LS1 has same threads as 3rd gen, but the rod is different. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Feb 27, 2012 7:29 pm Post subject: |
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Lines don't matter. You wont be reusing the stock ones since your stock prop valve should be headed for the scrap bin.
*Edit: Just took another look at the master in my car and it is the post-'98 style. Go figure buying used parts on fleaBay. |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 7:36 pm Post subject: |
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Now how am I supposed to be cool if you keep changing what it is to be cool? |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Mon Feb 27, 2012 7:41 pm Post subject: |
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Upon further investigation I do not think it matters much. Here is a pic I found of the two torn down (LS1 on top, LT1 on the bottom):
![](http://www.thirdgen.org/techboard/attachments/brake-board/109250d1136366785-4th-gen-master-cylinder-ls1-vs-lt1-mc.jpg) |
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iansane Member
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Joined: 16 Jan 2004 Posts: 5740 Location: Bothell
1991 Pontiac Trans Am
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Posted: Mon Feb 27, 2012 8:03 pm Post subject: |
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Functionally both the LS and LT MCs are the same. However, the LS style has the low fluid indicator in the reservoir and I have no freaking clue where the low fluid indicator is on the LT cars? ABS assembly?
The ultra big brake cool kids go LS. ![Very Happy](images/smiles/icon_biggrin.gif) _________________
Quote: | Sometimes I actually think I'm slightly retarded in the mouth. |
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QwkTrip 11sec Club
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Joined: 17 Feb 2004 Posts: 3942 Location: Peoria, IL
1989 Pontiac Firebird
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Posted: Mon Feb 27, 2012 10:15 pm Post subject: |
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Alright, I might hunt down an LS1 F body master cylinder. I've got to redo lines anyway for roll control.
I don't know when and I don't know where, but I do have one immature act of stupidity in mind and it requires roll stop. |
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blue89 Member
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Joined: 23 May 2006 Posts: 3482 Location: Bellingham/Eugene
1986 Chevrolet Camaro RS
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