can the commy disk rotor be mounted onto the HQ type stub.
HQ to commy
Started by
TerrA LX
, Jun 15 2006 01:32 AM
11 replies to this topic
#1
TerrA LX
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Posted 15 June 2006 - 01:32 AM
#2
gtrboyy
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Posted 15 June 2006 - 04:16 AM
Yes,you can even use the smaller type commodore disc with the hq caliper.Thats is what an lc Ive seen has & it passed for the engineers cert for a v8 conversion.
#3
TerrA LX
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Posted 15 June 2006 - 04:24 AM
thanx gtrboyy, thats what im thinken.
what model rotor they using.
what model rotor they using.
Edited by ALX76, 15 June 2006 - 04:26 AM.
#4
makka
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Posted 15 June 2006 - 12:26 PM
early commo VB-H, maybe VK
#5
Dr Terry
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Posted 15 June 2006 - 02:15 PM
Hi Guys.
There are a few different sizes of Commodore discs. The most Common 'small' disc rotor is the one that fits VB to VP 6 cyl & VB to VK V8. The VC & VH 4 cyl Commodores use a smaller disc, similar to LH/LX/UC, but have metric wheel studs.
VL to VP V8 & VL Turbo (also some V6 Police cars) use a larger diameter disc.
Dr Terry.
There are a few different sizes of Commodore discs. The most Common 'small' disc rotor is the one that fits VB to VP 6 cyl & VB to VK V8. The VC & VH 4 cyl Commodores use a smaller disc, similar to LH/LX/UC, but have metric wheel studs.
VL to VP V8 & VL Turbo (also some V6 Police cars) use a larger diameter disc.
Dr Terry.
#6
dattoman
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Posted 15 June 2006 - 02:32 PM
Besides to get the stud pattern
What would be the purpose of doing this ?
The commy disc is 270mm as opposed to the HQ at 276
The commy disc is 23mm thick as opposed to the HQ at 25.4
So why would you want to do it ?
And yes they run the same bearing and bearing spacing so yes the disc fits on no worries.
What would be the purpose of doing this ?
The commy disc is 270mm as opposed to the HQ at 276
The commy disc is 23mm thick as opposed to the HQ at 25.4
So why would you want to do it ?
And yes they run the same bearing and bearing spacing so yes the disc fits on no worries.
#7
TerrA LX
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Posted 15 June 2006 - 06:36 PM
so im better off purchasing HQ disks with commy pattern.Besides to get the stud pattern
What would be the purpose of doing this ?
The commy disc is 270mm as opposed to the HQ at 276
The commy disc is 23mm thick as opposed to the HQ at 25.4
So why would you want to do it ?
And yes they run the same bearing and bearing spacing so yes the disc fits on no worries.
i was just looking for a budget alternative.
#8
dattoman
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Posted 16 June 2006 - 01:20 AM
I think thegts has some for sale..... with calipers
#9
TerrA LX
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Posted 16 June 2006 - 01:42 AM
what about drilling Hq disk to commy?
#10
_Oldn64_
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Posted 16 June 2006 - 02:22 AM
Legally you cannot really redrill the original disc to commodore but a new undrilled one you can. it is something about stress concentration etc etc.... Seems not to have stopped many people before....
Cheers
PS: Keep inmind that if you customise stuff like this when you need to replace it you will need the custom stuff done again. make sure you do not need the car before going down this path as parts can take a long time to get when specialist. I try to use standard parts now... makes fixing yell easier...
Cheers
PS: Keep inmind that if you customise stuff like this when you need to replace it you will need the custom stuff done again. make sure you do not need the car before going down this path as parts can take a long time to get when specialist. I try to use standard parts now... makes fixing yell easier...
#11
TerrA LX
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Posted 16 June 2006 - 02:30 AM
the splines that hold the studs, are they just an interference fit?
#12
_Oldn64_
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Posted 16 June 2006 - 02:47 AM
Yes they are a pressed interfereance fit. the splines in teh disc get cut as the studs get pressed in. So just changing teh studs is not going to help as you would end up with HQ stud pattern (read PCD) with commodore metric thread....the splines that hold the studs, are they just an interference fit?
Cheers
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