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HG Ute numbers decode please
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Tonyl66 Offline
#1 Posted : Saturday, 18 June 2016 8:15:14 PM(UTC)
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I have have bought a HG ute which was built in September 71

Small tag 80180GH209199

Large Tag

Model;HG 80180M
Body ; 22346B
Trim; 1821 12A
Paint; 56813134

Body Number AHG57507B

Engine number QD46015

From what I can gather its a HQ paint code and engine would the engine match this car?
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HK1837 Offline
#2 Posted : Saturday, 18 June 2016 8:33:39 PM(UTC)
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No, that is a HQ engine. The original would be prefixed GD, GE, GL or GM. HQ paint was the current paint at the time hence it is normal for HG and LC to have HQ colours.
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castellan Offline
#3 Posted : Sunday, 19 June 2016 1:45:01 PM(UTC)
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Originally Posted by: Tonyl66 Go to Quoted Post
I have have bought a HG ute which was built in September 71

Small tag 80180GH209199

Large Tag

Model;HG 80180M
Body ; 22346B
Trim; 1821 12A
Paint; 56813134

Body Number AHG57507B

Engine number QD46015

From what I can gather its a HQ paint code and engine would the engine match this car?




QD46015 I think is a late 173 HQ engine number.
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HK1837 Offline
#4 Posted : Sunday, 19 June 2016 2:08:23 PM(UTC)
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It is early HQ 173 high compression. Roughly July-Sept 1971. In fact if it has a G rather than an Q i'd say it is close to the correct sequence number for the HG.
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Tonyl66 Offline
#5 Posted : Monday, 20 June 2016 7:47:07 AM(UTC)
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Thanks guys, I dont have the motor only the engine number from the rego which starts with Q
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HK1837 Offline
#6 Posted : Monday, 20 June 2016 7:56:37 AM(UTC)
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It may have been a misread and actually was GD46015.

It is looking like these late HG's might be like LH and early LX Toranas, some have HQ engine number prefixes and some HG prefixes. The Toranas are similar where auto 6cyl have Holden engines and manual 6cyl have Torana engines. It may well be that say auto HG 6cyl with AHG chassis numbers have G prefixes and manual have Q prefixes. This isn't the only one to turn up with a HQ engine number prefix, so it won't be an error. It doesn't make sense though, as GMH went to great lengths to make sure LC/LJ engines use a different prefix which I've always thought was as the sump was different, Bedfords do too using F prefix numbers. It would make sense for HG engines to be different due to the different sump, yet these HG's with Q prefixes exist.

Edited by user Tuesday, 21 June 2016 1:39:25 PM(UTC)  | Reason: Not specified

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Tonyl66 Offline
#7 Posted : Wednesday, 22 June 2016 4:36:19 PM(UTC)
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I have got a photo of the engine number and it is a Q prefix
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HK1837 Offline
#8 Posted : Wednesday, 22 June 2016 5:04:18 PM(UTC)
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As yet a mystery, i'm trying to figure out why some have Q and some G.
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castellan Offline
#9 Posted : Thursday, 23 June 2016 11:32:41 AM(UTC)
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Originally Posted by: HK1837 Go to Quoted Post
As yet a mystery, i'm trying to figure out why some have Q and some G.


Brisbane made ute maybe why, but all engines should be stamped before they are go out of the engine plant ?
Maybe Brisbane had a HQ engines in stock but had to change over the sump for the last of the HG utes.
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Dr Terry Offline
#10 Posted : Thursday, 23 June 2016 1:06:14 PM(UTC)
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Originally Posted by: castellan Go to Quoted Post
Originally Posted by: HK1837 Go to Quoted Post
As yet a mystery, i'm trying to figure out why some have Q and some G.


Brisbane made ute maybe why, but all engines should be stamped before they are go out of the engine plant ?
Maybe Brisbane had a HQ engines in stock but had to change over the sump for the last of the HG utes.


No, I doubt that they did that, it's more than just the sump. The lower thermostat housing is different, as is the carby.

I couldn't imagine swapping engine bits & pieces of that nature on the floor at the assembly plant.

Dr Terry

Edited by user Thursday, 23 June 2016 2:22:03 PM(UTC)  | Reason: Spelling

If at first you don't succeed, just call it Version 1.0
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HK1837 Offline
#11 Posted : Thursday, 23 June 2016 4:31:09 PM(UTC)
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Dr Terry is spot on. The phenomenon isn't only Acacia Ridge assembled ute either, it is utes and vans also from other assembly plants.

Terry, can you think of anything unique about a HG auto 173 or 202 engine versus a HQ auto engine (bits in the above post aside) that is on the engine when it comes out of the engine crates at the assembly plants? Like does the auto HG engine use a different carby to the auto HQ one but the manuals are the same?
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Dr Terry Offline
#12 Posted : Thursday, 23 June 2016 5:07:51 PM(UTC)
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To my knowledge all the carbies are different between HQ & HG, because the linkage attaches at 180 degrees.

I have a parts catalogue supplement which lists all of the update parts for the HQ into HG engine swap. I will check that tonight.

Dr Terry

Edited by user Thursday, 23 June 2016 5:18:49 PM(UTC)  | Reason: Not specified

If at first you don't succeed, just call it Version 1.0
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HK1837 Offline
#13 Posted : Thursday, 23 June 2016 6:21:24 PM(UTC)
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Cool, it has me perplexed, but LH with HQ engines for autos did too until the clutch lightbulb went off.
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