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Commodore Booster to LH/X Rear Discs

Started by _rorym_ , Apr 19 2009 05:04 PM

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108 replies to this topic

#26 _robrenjus_

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Posted 09 January 2010 - 10:15 PM

i used a vp v8 booster and 1" master cyl , took 50mm of the pushrod, washers on mounting studs and took the fittings also off the commodore took only hours to do.

are the 6 and 8's different on the p?

i used these because they came on the donor car i bought . It came with the double diaphram booster and 1" master cylinder.I assume that v8's were double boosters and 1"masters and i dont know if any v6's had this combo .If you look on the top front section of the master cyl it my say 15/16 or 1 and if you get the brake booster part number someone should be able to tell you whether or not it is twin diaphram. Also i think its safe to say that if the vn or vp has smaller brakes with 14" wheels then it probably does NOT have a decent booster/ master combo.maybe someone else can offer some more info.

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#27 _UC HATCH_

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Posted 25 January 2010 - 01:23 PM

Does the PBR P10050 master cylinder have a built in proportioning/Bias valve?

If it dose what is the advantage of the Wilwood Bias brake adjuster?

Thanks

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#28 dattoman

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Posted 25 January 2010 - 11:17 PM

Yes the PBR master has the valve inbuilt

An adjustable valve has the benefit of... .well ... adjustability

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#29 _UC HATCH_

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Posted 25 January 2010 - 11:45 PM

Thanks Dattoman
Sorry I should have said -
If it dose what is the advantage of the Wilwood Bias brake adjuster added to the PBR P10050 master cylinder inbuilt valve as well?

As rorym has done.

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#30 dattoman

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Posted 25 January 2010 - 11:55 PM

Adjustability

The master cylinder valve may not be enough
The wilwood allows more tuning ability

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#31 _76lxJAS_

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Posted 13 February 2010 - 11:16 PM

hy guys could any1 tell me what other 1 inch masters are there with inbuilt prop valve that wwill bolt strait to the vs duel diaphram booster?
cheers jason

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#32 dattoman

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Posted 13 February 2010 - 11:22 PM

No such thing as a VS dual booster
VS was plastic single

If its VR or vefore then the 1" Commodore does of course... or XD Falcon... or even WB
Depends whether you want metric or imperial pipe threads

Maybe post a pic of your booster for identification or get the part # off it... its stamped around the front of the cannister on the edge near where it joins the back can
Will either start VH*** or B259-***

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#33 _76lxJAS_

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Posted 13 February 2010 - 11:30 PM

may b it is a vr? im only going by looks at this stage still waiting for it to arrive.
im not fussed wat thread i go as its all getting redone anyways.
just dont like the look of the wb/ford square masters. was hopeing to find somethig that looks better?
any help would be great.
Jason

!BjJNtKw!2k~$(KGrHqUOKj0EsneBs(rRBLS(P3,-Zw~~_35.jpg 10.12K 46 downloads

Edited by 76lxJAS, 13 February 2010 - 11:32 PM.

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#34 dattoman

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Posted 13 February 2010 - 11:35 PM

Theres a 1" version of that oval one too
P10331 is its PBR part #

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#35 _76lxJAS_

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Posted 13 February 2010 - 11:42 PM

Theres a 1" version of that oval one too
P10331 is its PBR part #

ok cheers thanks mate ill look for 1 of them.
would a vt vx master b ok also?

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#36 dattoman

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Posted 13 February 2010 - 11:54 PM

Nope
I would have said so if it was

VS onwards ran a different configuration
You can adapt the VT booster and master in... but I think its uglier and needs more work for little gain

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#37 _76lxJAS_

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Posted 14 February 2010 - 12:05 AM

ok ill take your word for it.
what did the ovel 1" P10331 come out of???

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#38 dattoman

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Posted 14 February 2010 - 01:21 AM

Commodore

VL turbo
VL V8
VN V8

But since your going to buy a new one.... it doesn't matter... just ask for that part #

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#39 _brett_32i_

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Posted 30 March 2010 - 11:11 AM

from what ive seen, the plastic VS will bolt onto the torana as per rorys method. a VT m/cyl can then bolt up to the VS booster.
need to shorten the vs push rod or fit spacer between booster and m/cyl.

i have a vt m/cyl. need to get a vs booster and then i can fill in a few of the blanks.

has anyone else had experience with this setup??

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#40 dattoman

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Posted 30 March 2010 - 09:40 PM

The plastic VS is a single diaphragm and prone to cracking the front cannister
I wouldn't be recommending this one

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#41 _brett_32i_

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Posted 31 March 2010 - 05:12 AM

interesting.

i worked at pbr for 7 years and never heard of them cracking.
but it could be the reason they only went plastic for one model.

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#42 dattoman

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Posted 31 March 2010 - 10:07 AM

C4 vette
EF-EL Fud
VS commode
KC-KE laser

All had a form of plastic booster... when they get older they crack especially with exhaust heat
Probably not a problem on a Red 6 but certainly an issue on everything else

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#43 _brett_32i_

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Posted 31 March 2010 - 08:16 PM

how olds old?

i can see the vette having issues. and V8 VS's. (did the 8s have plastic too?)

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#44 _robrenjus_

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Posted 01 April 2010 - 08:40 PM

C4 vette
EF-EL Fud
VS commode
KC-KE laser

All had a form of plastic booster... when they get older they crack especially with exhaust heat
Probably not a problem on a Red 6 but certainly an issue on everything else
[quote]

also alot of those (particularly the fords) have doughy pedals from the boosters "flex".

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#45 _markymark20_

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Posted 29 April 2010 - 09:28 PM

hey datto,
you seem to be clued up on brakes, can you help me? I am about to do the conversion above, but before i do, i believe my vac booster is shaged. before I took it out of the VN SS donor car, when you put your foot on the pedal all you could hear was sucking under the dash( and my wife wasn't in the car!). If the booster is shaged am I better off pulling it apart and fixing the diaphram or getting a new (or reco) booster?? any help appreciated!!

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#46 dattoman

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Posted 29 April 2010 - 09:49 PM

Reco
And do the rod mods while its apart

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#47 _markymark20_

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Posted 05 May 2010 - 09:56 AM

Hey thanks Datto,
just need a little more help. I have got the booster apart and removed the c clip holding the pushrod, done the mods to the pushrod, but cut figure out how to get the diaphrams out. Any help is appreciated!