512 replies to this topic

[meanmachine72]

who drove car 24 when it rolled bruce???

[FLY_AGAIN_XU-1]

[FLY_AGAIN_XU-1]

Recognition (Homologation)
MADE and/or SOLD

June (109)
July ( 10)
August (191)
September (299)

Total (609)

From July to the end of September 500 XU-1s had been produced 250 by each plant.

Friday (30-6-1972) (The V8 LJ is dumped)

Saturday ( 1-7-1972) (Recognition 1/1V Detroit Locker)
(Batch 1 200)

Thursday (10-8-1972) (Recognition 2/2V Sprintmasters)
(Batch 2 200)

Tuesday (29-8-1972) (Recognition 5/5V Cam, Flywheel etc)
(Batch 3 200)

My theory is that Batch 3 cars started at JP216 and finished with the JP222 ! I am still waiting on some letters from C.A.M.S. and Joe Felice but im hoping there are some vin numbers or engine numbers on these letters to once and for all verify this.

[FLY_AGAIN_XU-1]

Amendment 1/1V 1/7/1972 - Final drive. Variation in
supplier. May be either "Borg Warner Limited slip" or
"Detroit No Spin"

From the 1/7/1972 to the end of September 1972 Holden had
produced a total of 500 LJ XU-1,s.

Could Holden only have built 100 of the Amendment 1/1V cars ?
Can 1/1V cars be classed as 1972 Bathurst XU-1.s ?
Can 2/2V cars be classed as 1972 Bathurst XU-1,s as they only
had sprintmasters fitted ?
Did sprintmasters become optional after the 200 2/2V cars ?

I would be very interested to hear your thoughts on this !!!!!!!!

Of the 200 5/5V cars 50 had been earmarked for export only leaving
150 in Australia !

Looking forward to hearing your thoughts on this subject !

Bruce.

[FLY_AGAIN_XU-1]

I have been unable to obtain any paper work from either Holden or CAMS on this matter. So all we have to go on is the rules, homologations and the vin disk. With no concrete proof we can only still theorize what took place in 1972.

FACT 1 : On Friday the 30-6-1972 Holden pulled the plug on its V8 LJ programme due to the SUPER CAR SCARE and pressure from government.
FACT 2 : On Saturday the 1-7-1972 Homologation 1/1V becomes effective.
Final drive. Variation in supplier. May be either " Borg Warner Limited Slip" or "Detroit No Spin".
FACT 3 : On Thursday the 10-8-1972 Homologation 2/2V becomes effective.
6" Aluminium Alloy Wheels ( Sprintmasters )
FACT 4 : On Tuesday the 29-8-1972 Homologation 5/5V becomes effective.
Heavy duty coil springs, Lightened flywheel, New camshaft and 3.55 Final drive ratio.
FACT 5 : Holden produces 500 cars between 1-7-1972 and 29-9-1972.
FACT 5 : On Sunday 1-10-1972 Peter Brock wins Bathurst.

MY THEORY

Batch 1 cars Homologation 1/1V 1-7-1972 Diff (Total 100)
With Holden deciding not to go ahead with the "Detroit No Spin" (Detroit Locker) and according to the rules they would of had to produce only 100 cars with the "Borg Warner Limited Slip" It is my belief this target was achieved on Friday the 11-8-1972.

Batch 2 cars Homologation 2/2V 10-8-1972 Sprinmasters (Total 200)
It is my belief that these cars started rolling off the production lines on Friday the 11-8-1972. At the Brisbane plant they were completed on Tuesday the 5-9-1972 while Adelaide continued through out September in finishing off their quota of these batch 2 cars (Sprintmasters)

Batch 3 cars Homologation 5/5V 29-8-1972 Springs, Cam shaft, Lightened flywheel, 3.55 diff ratio.
It is my opinion that these cars started rolling off the production lines on Tuesday the 5-9-1972 at the Adelaide plant and Wednesday the 6-9-1972 at the brisbane plant. With a new camshaft and lightened flywheel needing to be fitted a new batch of engines had to be produced. I believe these engines ranged from JP216 to JP222. For those that have the vin disk check H247797, then check the cars previous to this and you,ll see what i mean. This also fits in the time frame perfectly ! It is also my belief that these cars came standard with nibless rims but could be fitted with the $125 OPTION of sprintmasters.

So in summing up my THEORY i think Holden done well ! Batch 1 cars had a diff change but were still a standard LJ XU-1. Batch 2 cars had sprintmasters fitted but were still a standard LJ XU-1 and the Batch 3 cars had all the go faster bits but looked exactually the same as any other LJ XU-1. I think this was largely due to the SUPER CAR SCARE. Well disguised I think.

So what is a 1972 BATHURST LJ GTR XU-1 ? "My Theory" A car built in September 1972 with an engine number ranging from JP216 to JP222. Batch 1 and 2 cars playing there part as well.

This is only my opinion !!!!!!!

Cheers, B.

[meanmachine72]

yes bruce....if you have the disc it is easy to follow..!!!
but i agree that on the H247797 page it does "tell" what
happened.......i agree johnno

[frash da bucket]

G'day FLY_AGAIN_XU1 .I sent a pm to you cheers.

[FLY_AGAIN_XU-1]

Up until the first homologation 6/6V which became effective on 15-6-1973 Holden had produced a total of 500 1973 LJ GTR XU-1,s. These 500 cars had been produced for one purpose. ^^^^^^^^^^^
1972 Bathurst specials ( No ) 1973 Group C specials ( Yes ).
I suppose the question can be asked as to weather a standard 1972 LJ GTR XU-1 fitted with either a Borg Warner Limited Slip or Sprintmasters can be classed as a 1972 Bathurst special. If we can class these cars as Bathurst specials then yes there certainly was more than 200 produced ?

Edited by FLY_AGAIN_XU-1, 12 July 2007 - 12:21 AM.

[FLY_AGAIN_XU-1]

With no CONCRETE proof of what a Bathurst 72 car is, I went back to the 71 Bathurst cars in which we have CONCRETE proof. The similarities between the 71 & 72 cars are very close with camshafts and a new diff ratio playing major parts. Going off the vin disc Holden produced a total of 299 cars in September of 1972. The same amount produced to create the 1971 Bathurst LC GTR XU-1.





In Joe Felice,s letter to C.A.M.S he states that 300 cars are to be produced, 200 with the 3.36 diff ratio and 100 with the 3.08 diff ratio. So what happened to the 300th car ? Straight forward really >>>

21.10.71 T LC 82911 H213674 K046874 (34203C0) 10.71 567 2

This car was marked down as a GTR when clearly it is a XU-1, bringing the total to 300. Also adding one to the total produced.

Adelaide 140
Brisbane 160

(Even concrete can be broken)

If only the 1972 Bathurst LJ GTR XU-1,s were that straight forward !!!!!!!!!

Cheers, B.

[FLY_AGAIN_XU-1]

This message is for Fly Again, where did you get your Pink XU1 from, i am trying to track down my old car, can you tell me about it please.

Mars

I have tracked my cars history back to 1986. From 1973 to 1986 is still unknown. It was finished on the 4-8-1972, Adelaide built. What one are you looking for Mars ???
We may now of it !!!!!!!!!!!!





Adam
I agree that the vins for October built cars are 8D11P & 82911 for August, September built cars. Maybe this is the defining point when the production cars started and the Bathurst run finished.

Awsome info Adam & R

[2600s]

Fly Again, my twin brother sold his 72 XU-1 in Adelaide maybe 1987 or 88. This car was red at the time but was originally SMP. Was your car purchased in Adelaide?? My brother belives he sold the car to a guy who was in the air force, he sold it for $4300

[FLY_AGAIN_XU-1]

Fly Again, my twin brother sold his 72 XU-1 in Adelaide maybe 1987 or 88. This car was red at the time but was originally SMP. Was your car purchased in Adelaide?? My brother belives he sold the car to a guy who was in the air force, he sold it for $4300

My car was painted white and was a WA car. Still had the original 1973 WA registration plates (XBX-414) when sold in 86-87.

Thanks, 2600s.