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peter_flane
Vintage Veteran
1297 Posts |
 Posted - 18/08/2012 : 7:43:55 PM
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When looking for brake master cylinder and booster assembly, are there huge differences?
Custom application.
VN-VT assembly, is there a difference between ABS and non ABS?
VR-VZ assembly. Are they all the same?
VE assembly. Is it ABS only and not suitable for non ABS application.? |
If it is old or rare - Cut it! http://www.ehlimo.com.au/ |
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commodorenut
Forum Engineer
2386 Posts |
Posted - 18/08/2012 : 10:20:19 PM
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The most common way to tell is that the ABS cars only use one of the front brake lines out of the master cylinder, and there's a plug in the other line.
VP/VQII is the first Commdodore model with ABS.
VN-VR run the same sort of master, but there were some minor changes in late VR.
It changed completely in VS - the VS arrangement is a bit of an orphan, but easily backward compatible. It has a plastic booster, and was the first of the "fast fill" master cylinders.
It changed again in VT - metal booster returned, sans the bracket on the rear (it bolted directly into the firewall unlike earlier ones - which means you need to make a bracket to adapt it into other cars).
The mounting angle in the VT also changed to near enough to 90 degrees from ground, so the reservior is almost flat in it's profile, not angled like earlier ones (which means you need an AU resevior (which fits the VT master) if you want to use the VT master in an earlier car that has an angled reservior).
It changed again in VE, and all VEs have ABS.
Can I ask what you're looking to do? |
Cheers,
Mick
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Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
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peter_flane
Vintage Veteran
1297 Posts |
Posted - 19/08/2012 : 9:37:19 PM
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Wow, didn't realise there were so many.
Custom application in old Holden with late Commodore (Fit VT onwards) brakes all round. If I get a matching booster, then I have a good chance of getting the balance right. As it is going to be a 90 degree firewall, then the VT master assembly sounds like it is the one to use.
I suppose the main concern was the ABS question. As this custom car will not have ABS. |
If it is old or rare - Cut it! http://www.ehlimo.com.au/ |
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commodorenut
Forum Engineer
2386 Posts |
Posted - 20/08/2012 : 06:31:39 AM
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VT booster, master & reservior is perfect for you.
I've done this setup in a VH. Just unplugged the 2nd front brake port and plumbed it the "old" way.
Be aware that the ports need the lines to have a ball flare on them, not the traditional double flare.
There's heaps of VT master/booster conversions running around in non-ABS VB-VS models.
When people fit the VT calipers (twin spots) the additional fluid movement results in a long pedal using the old master cylinders. The fix is to use the VT master, as moves more fluid for the twin-spot front calipers.
My only criticism of these conversions is that the pedal can be a bit touchy, but more often than not it's because you need to redrill the location of the attaching point to the pedal, and most people do a "near enough" measurement.
If you line it all up with NO preload on the booster's rod, and then drill it to suit your pedal, it will be perfect. |
Cheers,
Mick
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Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
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308hjute
Quarter Horse
Australia
114 Posts |
Posted - 20/08/2012 : 8:27:25 PM
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Thread hijack apologies......
Mick, might have to drop around one weekend and pick your brains on this for a HZ. Ball flares on the lines - something we could do ourselves?
Kev |
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commodorenut
Forum Engineer
2386 Posts |
Posted - 20/08/2012 : 11:47:50 PM
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No worries Kev. You're welcome any time. You still had the SS when you last came around! Lots of catching up to do.
If you know someone you can borrow the tool off, or if you want to buy one outright, then yes you can do it at home. |
Cheers,
Mick
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Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
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Dr Terry
Forum Engineer
Australia
3900 Posts |
Posted - 21/08/2012 : 06:53:27 AM
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quote:
Originally posted by 308hjute
Thread hijack apologies......
Mick, might have to drop around one weekend and pick your brains on this for a HZ. Ball flares on the lines - something we could do ourselves?
Kev
Hi Kev. Thread hijack again.
I have adaptors in stock that can convert ball to inverted flare & another that can do the reverse.
Dr Terry |
Carbon dioxide is not a pollutant !! It's plant food !! |
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Topic |
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Is there a difference ABS and non ABS master cyl