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PCD fpr FX/FJ - Dr Terry
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Dr Terry Offline
#1 Posted : Monday, 17 April 2023 3:23:35 PM(UTC)
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Does anybody on Fastlane know the PCD dimension for early Holden (FX/FJ) wheel rims.

Dr Terry
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gmholdman Offline
#2 Posted : Monday, 17 April 2023 6:35:35 PM(UTC)
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Have a couple of drums here I will measure them up. AL. Dancing
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#3 Posted : Monday, 17 April 2023 7:00:16 PM(UTC)
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Terry, 3 7/8” between stud centres x5.

Edited by user Monday, 17 April 2023 7:23:33 PM(UTC)  | Reason: Not specified
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HK1837 Offline
#4 Posted : Tuesday, 18 April 2023 6:39:14 AM(UTC)
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That makes it 5 x 6 19/32 I think? Or is it the same as old Land Rover which is 5 x 6 1/2" which means the stud to stud measurement is actually 3 13/16 (just means you are out by 1/16" AL). Landrovers used a 5/8" stud IIRC.
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#5 Posted : Tuesday, 18 April 2023 2:32:17 PM(UTC)
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Bent stud ?? or my old carpenters wooden 3’ rule with thick paint graduations ?? 😂😂😂. AL.
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#6 Posted : Tuesday, 18 April 2023 5:34:34 PM(UTC)
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Terry, I read on a Landrover forum that landrover, Morris Commercial and "FX"/FJ Holden are 5 on 6.5" PCD (165.1mm)
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Dr Terry Offline
#7 Posted : Wednesday, 19 April 2023 7:24:09 AM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
Terry, I read on a Landrover forum that landrover, Morris Commercial and "FX"/FJ Holden are 5 on 6.5" PCD (165.1mm)


Thanks Byron, that seems to back up AL's measurement.

Dr Terry

Edited by user Wednesday, 19 April 2023 7:26:34 AM(UTC)  | Reason: Not specified

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#8 Posted : Wednesday, 19 April 2023 7:18:32 PM(UTC)
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Originally Posted by: Dr Terry Go to Quoted Post
Does anybody on Fastlane know the PCD dimension for early Holden (FX/FJ) wheel rims.

Dr Terry


this info ( I just checked ) is NOT in the original GMH 48/215 or FJ service/repair manuals I have
nor is there any info about replacing the wheels studs (front or rear)
... curious that!
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Dr Terry Offline
#9 Posted : Thursday, 20 April 2023 7:47:19 AM(UTC)
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Originally Posted by: Smitty2 Go to Quoted Post
Originally Posted by: Dr Terry Go to Quoted Post
Does anybody on Fastlane know the PCD dimension for early Holden (FX/FJ) wheel rims.

Dr Terry


this info ( I just checked ) is NOT in the original GMH 48/215 or FJ service/repair manuals I have
nor is there any info about replacing the wheels studs (front or rear)
... curious that!


Exactly & my reason for asking the question in the 1st place. I couldn't find it in any GMH literature & believe me I have a ton of it.

On the topic of wheel stud PCD, have you noticed that the FE to HG (& Torana) PCD was always quoted as 4.24 inches & not 4.25 (which is a more logical imperial 4 1/4 inches).

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#10 Posted : Thursday, 20 April 2023 9:26:52 AM(UTC)
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I had seen that too Terry and thought WTF? Its even in the Engineering Technical Specs: 5 stud 7/16", 20 UNF 2A thread, 4.24" PCD.
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#11 Posted : Thursday, 20 April 2023 4:24:11 PM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
I had seen that too Terry and thought WTF? Its even in the Engineering Technical Specs: 5 stud 7/16", 20 UNF 2A thread, 4.24" PCD.


I remember a long time ago, an argument raging on the GMH-Torana site about this but
no recollection of the outcome as to the why.. why so

but I do remember a silly bit of trivia from that topic, HB Torana is exactly 4.000" Dancing
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Dr Terry Offline
#12 Posted : Friday, 21 April 2023 7:36:31 AM(UTC)
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Originally Posted by: Smitty2 Go to Quoted Post

but I do remember a silly bit of trivia from that topic, HB Torana is exactly 4.000" Dancing


Yeah, HB to TA 4-cyl Toranas were 4 stud @ 4.00" like a lot of other Pommy cars of the era. When I talk about Torana I often forget about the little Vauxhall ones.

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Dr Terry Offline
#13 Posted : Friday, 21 April 2023 7:43:48 AM(UTC)
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Originally Posted by: Smitty2 Go to Quoted Post
Originally Posted by: HK1837 Go to Quoted Post
I had seen that too Terry and thought WTF? Its even in the Engineering Technical Specs: 5 stud 7/16", 20 UNF 2A thread, 4.24" PCD.


I remember a long time ago, an argument raging on the GMH-Torana site about this but
no recollection of the outcome as to the why.. why so


I was part of that discussion & yes it did "rage". Most thought it was a misprint, but my point was that was a lot of misprints in a lot of different manuals over several decades. Man, now that's a misprint.

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Smitty2 on 21/04/2023(UTC)
HK1837 Offline
#14 Posted : Tuesday, 8 August 2023 7:59:42 PM(UTC)
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It came up again elsewhere on GMH-Torana Terry.

I still reckon it’s a perpetuated error. Otherwise it’s a crazy stud pattern like 4 31/128”.

Do you have any VH docs showing the 4cyl PCD?

Edited by user Tuesday, 8 August 2023 8:01:46 PM(UTC)  | Reason: Not specified

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#15 Posted : Tuesday, 8 August 2023 9:37:16 PM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
It came up again elsewhere on GMH-Torana Terry.

I still reckon it’s a perpetuated error. Otherwise it’s a crazy stud pattern like 4 31/128”.

Do you have any VH docs showing the 4cyl PCD?


VC, VH (and VK too) 4 cyl model steel wheels ... all 5.5 x 13" are the same part
number as on UC Torana if I recall this right from my days of checking GMP&A catalogues
first off prints (lots of people in house at GMH were asking this same question when VC came out)

Does that help?

Edited by user Tuesday, 8 August 2023 9:38:17 PM(UTC)  | Reason: Not specified

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HK1837 Offline
#16 Posted : Wednesday, 9 August 2023 6:14:58 AM(UTC)
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I have no doubt the wheels are essentially the same. I was just wondering if they revisited the specs when changing the stud threads and specs to metric. I also thought 4cyl Commodore wheels didn’t have hubcap clips?
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Smitty2 on 9/08/2023(UTC)
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#17 Posted : Wednesday, 9 August 2023 1:04:04 PM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
I have no doubt the wheels are essentially the same. I was just wondering if they revisited the specs when changing the stud threads and specs to metric. I also thought 4cyl Commodore wheels didn’t have hubcap clips?


my recollection, (I was given a * VH SL version to drive to Acacia Ridge on one work visit ) is they sorta had .. several bumps in the middle circle pressing of the wheel centre so
GMH fitted a horrid plastic hubcap to VC 4cyl Commodores ( though they fitted UC 6cyl Torries with steel wheels with a plastic hubcap and 4cyl Sunbirds a sort of shiny metal cover)

The base SL VC and VH 4 cylinder cars got a centre cap (retained by the wheel itself) again like the 4cyl Torana


*this thing.. manual 4 cyl with aircon was the only car I have driven in the country flat out WOT
never get caught speeding... up a hill with aircon on it would gradually lose speed, a down shift
was needed to go up a rise or hill on the Hume !

Edited by user Wednesday, 9 August 2023 1:06:55 PM(UTC)  | Reason: Not specified

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HK1837 Offline
#18 Posted : Wednesday, 9 August 2023 5:36:22 PM(UTC)
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Like this I meant. I thought they were like LC-LJ GTR rims with no hubcap tabs.

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Smitty2 on 11/08/2023(UTC)
Dr Terry Offline
#19 Posted : Thursday, 10 August 2023 11:36:13 AM(UTC)
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I'm not sure about the hubcap nibs, but I believe that the Commodore rims have more offset than the Torana ones.

Dr Terry
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Smitty2 Offline
#20 Posted : Friday, 11 August 2023 9:13:32 AM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
Like this I meant. I thought they were like LC-LJ GTR rims with no hubcap tabs.



thanks
thats what was the base vehicle version with the plastic wheel centre cap

this...is what I was referring to





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