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Stud Pattern

Started by _Torana Affair_ , Sep 17 2011 09:35 AM

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#1 _Torana Affair_

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Posted 17 September 2011 - 09:35 AM

Hey All,

My car is in getting some work done to her , re-bushed, adjustable cntrl arms on the 9" , axle seals , changing the rear to disc , front disc upgrades , and i wanted to change stud pattern to have a varied style of wheels i could use, not official yet but the
guys in there are trying to make me lean to Ford stud pattern................ Any ones thoughts greatly appreciated...................

Also they are doing a custom full exhaust system for 308, i wanted a dual system...
Should i bring both out down passenger side as he is saying its a tight fit to bring one down drivers , and best to modify fuel tank........... dunno why , factory pea shooters fitted Posted Image

But yeah throw me your thoughts......

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#2 SmacT

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Posted 17 September 2011 - 09:42 AM

Is it flared mate? I went HQ stud pattern myself, as it's the same as chev pattern and there's a million wheels available with the right offset to suit flares. I don't know much about ford stud pattern though.

I ended up with a set of wheels from the US, with a custom offset. I guess you could do that with Ford pattern, too.

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#3 _Torana Affair_

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Posted 17 September 2011 - 10:03 AM

Nah , not a fan of flares myself , so it will never have flares......
They where saying the conversion is just alot cheaper, for now and future for parts.......... Posted Image

Just going off what ive been told, thats why id like to query it on here

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#4 _CHOPPER_

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Posted 17 September 2011 - 10:57 AM

Go Ford stud pattern. This gives you off the shelf stock bits for the rear brakes, virtually unbreakable studs, and the greatest range of rims known to man. Ford also has the same centre bore as HQ. So if you are using HQ front discs, just order them blank and away you go. I would use AU on offset as it is closer to Torana than pre-AU. The advantage is the AU wheels will be correctly located on the undrilled HQ discs. This offers several advantages.

Torana offset: +32

AU on offset: +35

pre-AU offset: +6

For the sakes of throwing it in, HQ is +13 and most VB - VZ is +43.

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#5 76lxhatch

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Posted 17 September 2011 - 11:08 PM

Yeah in retrospect I think I would pick 5x4.5" too, there are a number of wheels around for 5x4.75" but not as many. Anything else is going to be quite restrictive due to the offset required.

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#6 rexy

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Posted 21 September 2011 - 12:03 AM

HQ HQ HQ
Why would you want to run any of the factory ford wheels - pretty hideous the lot of them.
If you want proper shiny stuff like welds etc then you might as well go HQ anyway.
Thicker wheel studs than standard holden not needed on a generally street driven car.
Dont let your car be the oddball one.

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#7 76lxhatch

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Posted 21 September 2011 - 08:26 AM

We're talking about availability of aftermarket wheels, not factory ones...

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#8 _sbc57lx_

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Posted 21 September 2011 - 08:49 AM

Go the ford pattern ( 5 x 114.3mm ) there is a big range of after market wheels available including old style wheels like HOTWIRES , GLOB ,SIMMONS and lot of factory wheels including jap stuff - just watch out with factory wheels offsets and centre hole sizes
. As for the centre hole I think is XB and earlier that have a 70mm Dia centre hole.
I've gone the Ford pattern - Not finished yet , but I'm not expecting any problems ( fingers crossed )

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#9 _CHOPPER_

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Posted 21 September 2011 - 10:34 AM

Thicker wheel studs than standard holden not needed on a generally street driven car.

Wrong. In the 30 years I've been in the tyre industry, I have seen literally hundreds of Commodore 12mm studs and nuts chew out simply by tightening or undoing them BY HAND. 7/16" studs aren't much better. I have only seen 2 or 3 damaged 1/2" studs in that time, all of which were cleaned up using a tap and die set. And this is on everyday cars, not all were modified beasts or owned by P platers.

And as sbc57lx said, the centre bore changed around ( and possibly during ) the XB series.

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#10 TerrA LX

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Posted 21 September 2011 - 11:20 AM

Out of interest how hard would it be to convert 120.65mmPCD 12mm stud to120mmPCD 1/2" stud?

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#11 _CHEV_

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Posted 21 September 2011 - 01:42 PM

I run standard Torana pattern with front bolt on hopper stoppers kit ( Torana pattern and a shortened rear nine inch with Torana pattern ). Then I had custom billet adaptor bolt on spacers made up from Torana to Ford Pattern all round. 35mm from memory fronts and 65.. rears...

These are bolted up to the standard Torana pattern and then a new hub centric and stud pattern comes off the adaptor for newer wheels. Drifters and Targa cars use these alot - Ive been doing skids in them and throwing my car around without any issues... ever.

The beauty of this is I can run 18 inch aftermarket Ford or skyline or Mitsubishi wheel (or smaller - Bigger) and then in 5 mins unbolt the wheel and adaptor and run up to a 295 14 inch weld or dragway.

Realistically with the large spacer at the back I cant get a lot of dish under the rear but it still works out pretty well and For $1000 these days you can get a set of 18 inch wheels and change up the look of your car for a trip or show... Then if you ever go to a drag strip smack your fatty drag tyre set back on... too easy.

Best of both worlds. And when I put a small 14 inch wheel on it tucks right up so for burnouts and the likes it wont ruin your guards if you ever popped a tyre.

Posted Image

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#12 _CHOPPER_

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Posted 21 September 2011 - 02:13 PM

Out of interest how hard would it be to convert 120.65mmPCD 12mm stud to120mmPCD 1/2" stud?

So to convert HQ pattern with 12mm studs to Commodore with 1/2" studs?

I think you got something wrong there.

What exactly do you have and exactly what do you want? Most front conversions require you to but new blank discs and getting them drilled to suit.

CHEV, those adapters can be engineered absolutely perfect, but they are illegal in most ( if not all ) states.

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#13 _Bomber Watson_

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Posted 21 September 2011 - 02:19 PM

Pretty sure Chevs car is a burnout/display only car...

That said although the adapters are likely fine on his they probably shouldnt be brought up in a thread which i assume is based around a road going car, or somewhere that someone with intentions of building a road going car can see the information and get mixed up without some kind of a warning.

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#14 TerrA LX

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Posted 21 September 2011 - 07:51 PM

Out of interest how hard would it be to convert 120.65mmPCD 12mm stud to120mmPCD 1/2" stud?

So to convert HQ pattern with 12mm studs to Commodore with 1/2" studs?

I think you got something wrong there.

What exactly do you have and exactly what do you want? Most front conversions require you to but new blank discs and getting them drilled to suit.

CHEV, those adapters can be engineered absolutely perfect, but they are illegal in most ( if not all ) states.

Sorry for the confusion, I have standard commodore axles I would like to convert to HQ stud pattern but with 1/2 inch ford studs, i believe that each existing hole would only need a micky hair in the right direction to locate in the correct spot to run a 1/2 inch stud thru them or would the whole axle need welding up and re drilling?

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#15 76lxhatch

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Posted 21 September 2011 - 09:38 PM

Sounds logical to me that it would work, not sure about the logistics of setting it up accurately but one would assume that it is possible at minimal cost if the holes were milled out or something as opposed to just drilling them...? The 1/2" studs would need to be minimum 0.325mm thicker in diameter than the 12mm ones - I have no idea what they are like at the spline but the there is 0.7mm difference in thread diameter so it must work out.

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#16 Toranamat69

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Posted 21 September 2011 - 10:04 PM

Not much material to play with to do that and makes it hard to centre punch where the new hole centre goes with the existing hole already there. I would think you would need a mill with an indexing wheel or the likes to be able to machine to suit the hole centres moved inwards by 0.325mm.

Not sure what a machinist would charge for that - would be worth it if they are expensive axles. If not, may be easier and not much more to get new axles.

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#17 _CHOPPER_

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Posted 21 September 2011 - 10:30 PM

Sorry for the confusion, I have standard commodore axles I would like to convert to HQ stud pattern but with 1/2 inch ford studs, i believe that each existing hole would only need a micky hair in the right direction to locate in the correct spot to run a 1/2 inch stud thru them or would the whole axle need welding up and re drilling?

There are some 1/2" studs that have a much larger base than the Commodore 12mm studs, so it could be done. Whether you can find a machinist to do it or not is another matter.

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#18 76lxhatch

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Posted 21 September 2011 - 11:41 PM

Not sure what a machinist would charge for that - would be worth it if they are expensive axles.

Or perhaps if very cheap (free), Commodore axles are worth nothing

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#19 _CHOPPER_

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Posted 22 September 2011 - 09:39 AM

Good luck getting Commodore axles the correct spline and length for nothing.

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#20 76lxhatch

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Posted 22 September 2011 - 01:20 PM

Two short side VN-VS makes a roughly Torana width diff, I've got several laying around and I don't even have a car that uses them... (how did that happen?). Also the VN-VS diffs are suitable width as is for HQ etc

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#21 _moot_

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Posted 22 September 2011 - 01:54 PM

in my corolla i have commodore axles with half inch studs in hq pattern.you only need to offset drill the holes.

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#22 _CHOPPER_

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Posted 22 September 2011 - 03:04 PM

The problem is the OP has a 9". No guarentee it's standard length and of course there is the 4" difference in axles.

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#23 _moot_

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Posted 22 September 2011 - 03:27 PM

The problem is the OP has a 9". No guarentee it's standard length and of course there is the 4" difference in axles.

Sorry for the confusion, I have standard commodore axles I would like to convert to HQ stud pattern but with 1/2 inch ford studs, i believe that each existing hole would only need a micky hair in the right direction to locate in the correct spot to run a 1/2 inch stud thru them or would the whole axle need welding up and re drilling?

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#24 rexy

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Posted 23 September 2011 - 06:22 PM

[quote name='CHOPPER' timestamp='1316565241' post='622306']
[quote name='rexy' timestamp='1316527391' post='622272']
Thicker wheel studs than standard holden not needed on a generally street driven car.

Wrong. In the 30 years I've been in the tyre industry, I have seen literally hundreds of Commodore 12mm studs and nuts chew out simply by tightening or undoing them BY HAND. 7/16" studs aren't much better. I have only seen 2 or 3 damaged 1/2" studs in that time, all of which were cleaned up using a tap and die set. And this is on everyday cars, not all were modified beasts or owned by P platers.

Yes, any fool can stuff a thread. You arent going to break many studs on a street car. Lord knows Ive tried hard with big power strokers and BBCs in heavyish cars without a failure. None of my contacts have either.
R