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Commodore booster and Master on LH/X.

Started by _rorym_ , Jan 27 2009 07:23 PM

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144 replies to this topic

#51 _rorym_

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Posted 06 March 2009 - 06:26 PM

Hang on....
Question...because I just saw one..

VB-VK with 4w disc usually
VL turbo and V8
VN-VR all V8 and alot with FE2 suspension
As Datto says...

Plus the late LX and UC ones look the same...

Whats to stop you just using one of these ^^^..if you have one...and bolting on the Commodore/Ford master cyliinder that suits 4 wheel disc brakes?...and flicking the prop valve??

Or did I miss something??
R

Edited by rorym, 06 March 2009 - 06:28 PM.

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#52 dattoman

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Posted 06 March 2009 - 06:37 PM

Commodore/Ford masters are diagonal bolt pattern
Early Holdens are horizontal

if it was that easy don't you think I would have told you ?

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#53 _rorym_

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Posted 06 March 2009 - 06:49 PM

BUGGER!..I hate it when he is right! Damn!
R

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#54 dattoman

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Posted 06 March 2009 - 06:51 PM

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#55 _rorym_

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Posted 06 March 2009 - 06:57 PM

So late UC is the same as Commodore then.
R

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#56 TUF 308

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Posted 07 March 2009 - 04:27 PM

Hmm seems none of the wreckers in toowoomba have any v8 boosters. Are they a hard item to come by?

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#57 dattoman

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Posted 07 March 2009 - 05:31 PM

Ok let me lay this out simple for you

Don't ask for a V8 booster
Just get a fat double diaphragm commy one
It doesn't care what car it came out of
They are all essentially the same from VB-VR (Not VS)

And no late UC although it had the angled front cover and ADR style master cylinder it was only a single diaphragm

Guys... seriously... nothing bolts straight in to do what you want.... theres adaption needed
Theres lots of ways to do it... but it might cost you some money

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#58 _rorym_

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Posted 09 March 2009 - 05:49 PM

But we LOVE you telling us we are wrong dumb arses! Thats your job in life! LIVE WITH IT!!
Send me the address to post this knuckle too Knuckle Head.
R

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#59 hatchssv8

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Posted 09 March 2009 - 06:51 PM

Boy.....I thougfht there was enough info on the first page of this thread to complete the mod.

The one thing I have noticed is that if you go with twin spot calipers on the front (and are using a D-Dia comm booster with 1 inch master) your pedal travel is noticably longer. At least 1 inch.

Last comm booster I bought second hand (with 1 inch master attached) cost me less than $100 from the local wrecker

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#60 _rorym_

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Posted 10 March 2009 - 06:03 PM

Hmm seems none of the wreckers in toowoomba have any v8 boosters. Are they a hard item to come by?

Might have a spare...was looking for 2..might end up with 3....if the a hole sends the 2nd one..after 4 weeks!!
R

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#61 TUF 308

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Posted 10 March 2009 - 06:13 PM

sounds good mate, if you do end up with 3 let us know and we can organise somthing.

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#62 dattoman

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Posted 11 March 2009 - 01:20 AM

I'll give you an address when I get back rory.... just hold it for me (no reacharound jokes)

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#63 _rorym_

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Posted 11 March 2009 - 06:32 AM

Done.
R

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#64 _rorym_

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Posted 13 March 2009 - 10:23 PM

.... just hold it for me (no reacharound jokes)

Ahhh...Shit why not?..You liked it when Welby did it???
R

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#65 _rorym_

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Posted 14 March 2009 - 12:48 PM

OK..Sorted some stuff out.
1. The Commodore booster bracket is 75mm at the top and 80mm at the bottom...tilting it upwards when fitted to the Commodore.You need to space it off the firewall on the bottom when fitting to the Torana.
2. This makes a difference to where the rod eyelet sits on the pin.
3. My LX has an LH brake pedal in it.
4. From eye to eye mounting/bolt hole to centre of pin is 55mm on LH pedal and 65mm on later LX...and possibly UC.
5. I have 2 one inch m/cs from VN V8 Commodores, now for the cut and shut on the rods back from 195mm to 138mm to centre of rod eyelet and we are away.
R

Edited by rorym, 14 March 2009 - 12:49 PM.

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#66 _rorym_

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Posted 14 March 2009 - 01:16 PM

Read it off the end of the cylinder

Yes it will suit disc rear.... but its not actually relevant anyway
Since a Torana weighs differently and has different sized rear brakes to a Falcon

Show me a formula that can calculate the desired pressure for a car and I'll start to believe it matters to people like us

You probably use a bias valve on the back that you adjust anyway don't you ?

The 15/16" shows C3.1....and the 1" shows C2.4
I am guessing this is in mega/neutonmeters/sq M and would equal 350psi and 450psi.....but I could be wrong.
R

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#67 _rorym_

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Posted 14 March 2009 - 03:02 PM

AND I have noticed some of the Commodore masters have 1 outlet for the front brakes and some have 2 oulets..Datto might know why.
R

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#68 _rorym_

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Posted 14 March 2009 - 03:39 PM

As usual I will do a step by step tech article to sticky to save anyone the drama in future.
R

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#69 antelopeslr5000

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Posted 14 March 2009 - 04:51 PM

AND I have noticed some of the Commodore masters have 1 outlet for the front brakes and some have 2 oulets..Datto might know why.
R

At a guess, ABS and Non-ABS master cylinders??? :huh:

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#70 _rorym_

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Posted 14 March 2009 - 04:53 PM

Hmmm.good point..Datto will know.
R

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#71 76lxhatch

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Posted 14 March 2009 - 09:12 PM

At a guess, ABS and Non-ABS master cylinders???

I'm pretty sure that's it

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#72 _rorym_

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Posted 14 March 2009 - 10:45 PM

First time its been mentioned in the thread...some one needs a slap....
R

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#73 TerrA LX

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Posted 15 March 2009 - 12:27 AM

AND I have noticed some of the Commodore masters have 1 outlet for the front brakes and some have 2 oulets..Datto might know why.
R

Sorry, wrong topic.

Edited by ALX76, 15 March 2009 - 12:29 AM.

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#74 _rorym_

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Posted 15 March 2009 - 03:35 PM

Datts away...will comment when he gets back.
R

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#75 fuzzypumper

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Posted 15 March 2009 - 04:18 PM

AND I have noticed some of the Commodore masters have 1 outlet for the front brakes and some have 2 oulets..Datto might know why.
R

Yes I canverify by looking at picks of my old VR with ABS that there is only one outlet for the front brakes.
Having said that there also an internal difference in the secondary pistion with the inclusion of a centre valve on the ABS Mcyl.

Also note you shouldnt use a Mcyl of a UTE either becuase the prop valve component of the combo Mcyl is different and doesnt have a seal block thus not providing any proportioning. This is handled by the load sensing hydrolic valve attached to the rear suspension in a UTE. It mechanically senses weight being hauled by ride height and adjusts valve to apply appropriate pressure to rear brakes.

Edited by fuzzypumper, 15 March 2009 - 04:32 PM.