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LJ XU1 NL Replacement Blocks


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#1 _macdou_

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Posted 16 October 2017 - 12:37 PM

Out of curiosity how many XU1’s received NL replacement blocks.

Cheers

#2 grumpy xu1

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Posted 16 October 2017 - 05:44 PM

NL or NP blocks are you actually asking Ken, as NL is a "gtr" replacement block under warranty. Gary.

#3 _macdou_

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Posted 16 October 2017 - 05:48 PM

NL replacement blocks Gary

NL or NP blocks are you actually asking Ken, as NL is a "gtr" replacement block under warranty. Gary.



#4 _macdou_

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Posted 19 October 2017 - 07:43 PM

I understand there are several LJ XU1’s that had NL replacement blocks used to replace the JP warranty engines, maybe in the absence of NP’s, not sure.

Anyhow just seeing how much knowledge is out there on this subject as was news to me.

Cheers

Edited by macdou, 19 October 2017 - 07:45 PM.


#5 Kevrev

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Posted 20 October 2017 - 08:35 AM

Hi Ken,
The August 72 XU-1 I used to own was first registered in NSW in 1974 with an NL block. I believe it was raced before then, probably why the original JP block was replaced
Cheers Kev

#6 _macdou_

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Posted 20 October 2017 - 09:10 AM

Hi Ken,
The August 72 XU-1 I used to own was first registered in NSW in 1974 with an NL block. I believe it was raced before then, probably why the original JP block was replaced
Cheers Kev


Kev do you know if it was ever documented?

I know there is some paperwork floating around, not sure if it’s yours or not

Cheers

#7 Kevrev

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Posted 20 October 2017 - 09:33 AM

Hi Ken, I never saw any documentation myself on the engine change, other than the original rego information from NSW. Apparently there is more information available on my old car but I'll leave it up to others to comment. Cheers Kev

#8 xu1_lc

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Posted 29 September 2020 - 07:04 PM

I have a 74 cast dated NL block could tgis be suitable for LJ xu1 replacement?

#9 yel327

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Posted 29 September 2020 - 07:23 PM

Good for a HQ-HX Sandman optioned or standard with a 202/3.3. Or an LH-LX SL/R/SS or an LJ GTR. Must be someone out there building one of these that is missing their original and want to put a 6 back in.

#10 lj72bathurst

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Posted 29 September 2020 - 07:35 PM

NL Block not suitable for xu1. You need Np Block

#11 xu1_lc

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Posted 29 September 2020 - 07:41 PM

I'm just going off the above post thats states his 72 xu1 had an NL replacement engine in it

#12 S pack

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Posted 29 September 2020 - 08:12 PM

I'm just going off the above post thats states his 72 xu1 had an NL replacement engine in it

No reason why someone couldn't use an NL block in their XU1. Plenty of XU1 have had QL blocks installed as replacements. That said, anyone who would pay big $$$$$ for an NL block to use in an XU1 would have rocks in their head when they could grab a QL block for a dime a dozen and it will be just as correct as an NL block as a replacement for a JP engine, which is not at all.
 



#13 yel327

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Posted 29 September 2020 - 08:17 PM

Probably just bought as a block and piston kit by an owner after he lunched the original. Cheapest way to do it I guess. In reality no different to someone buying a QL or GL or whatever and rebuilding it to replace the original. Certainly doesn’t make a QL correct for an XU1 just because one ended up in one. If it had been done properly by GMH it would have got an NP engine/block. Although I guess if you waltzed into a Holden dealer in 1977 and asked them to fix your broken XU1 all they could do then was either source another used and rebuilt JP or NP somehow or tell you the cheapest way out was to fit a new 3.3 block and piston set, which would have had an NL number on it. If it was your daily driver and you had bugger all cash what would you do?

If you want to make some money out of it advertise it as a warranty replacement engine for an LJ GTR or a HQ or HJ Sandman. If it is cast in 1974 it would suit any of these, and the silly $ changing hands for cars like theses today someone might be silly enough to pay a really good figure for it which is a good windfall for you. An NL in an LJ GTR is far more desirable than any other non-original garden variety JL engine.

Edited by yel327, 29 September 2020 - 08:21 PM.


#14 liswar2

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Posted 29 September 2020 - 09:14 PM

Did the 74 NL run 4 digits ie NL 1234
after the NL or 5 ,
I'e NL 12345 like the later NL blocks?
Asking out of curiosity ?

#15 yel327

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Posted 29 September 2020 - 09:29 PM

The sequence that NL are in started at 1001 at the start of HQ engines and counted up just like the HQ sequence. It went to 5 digits once 9999 was exceeded which from memory was later in the 70’s. By that time NL would be intended for mainly HZ, UC and VB but wouldn’t stop you buying one for a 1971 HQ if you needed to fix one.

#16 _macdou_

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Posted 30 September 2020 - 10:00 AM

Correct I have seen paperwork where an NL was used in an XU1 from factory...

I'm just going off the above post thats states his 72 xu1 had an NL replacement engine in it



#17 xu1_lc

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Posted 30 September 2020 - 10:15 AM

Correct I have seen paperwork where an NL was used in an XU1 from factory...

Any chance you have any documents?

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#18 S pack

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Posted 30 September 2020 - 10:26 AM

Correct I have seen paperwork where an NL was used in an XU1 from factory...


Are you saying an NL was fitted on the production line?

#19 yel327

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Posted 30 September 2020 - 10:45 AM

Won't have happened. An Nx engine is a Service or Warranty engine fitted to a car later normally at a dealership and sourced through the Nasco division. And there will not be "factory" evidence as GMH didn't record engine numbers in cars at the assembly plants, the engines that were in cars were recorded by the dealer when they sold the car. I have seen NL or NP engines in the Service/Warranty report as that was what was in the car when it was sold as the dealer obviously had to replace the engine probably to a demo. There is one in the LJ records somewhere. There is also examples of where a dealer has swapped engines between cars before they sold them, one big example is where a dealer swapped drivelines between a HQ LS with L30 engine and a (from memory) HQ V8 auto panel van, the QR engine is recorded in the Service/Warranty report against the LS and the van with the QU engine. If you scrolling through the LJ records you find heaps of engine swaps and many data entry errors, and the NL or NP I was referring to.



#20 _macdou_

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Posted 30 September 2020 - 12:25 PM

Was a warranty replacement Dave...

Are you saying an NL was fitted on the production line?



#21 S pack

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Posted 30 September 2020 - 12:51 PM

Was a warranty replacement Dave...
 

Well in that case it is totally incorrect to say it was 'used in an XU1 from factory'

It was dealer fitted, nothing more.

We are to assume this XU1 must have been a 1973 build for it to be fitted with a 1974 cast dated NL under warranty?

In which case there is no excuse really for the dealer installing an NL block when NP blocks were still readily available at that time for warranty replacement.
 



#22 yel327

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Posted 30 September 2020 - 01:02 PM

Dealer fitted at best. Just as likely to be fitted by the owner or by local workshop or race team prepping the car for sale after they were finished with it.

#23 _macdou_

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Posted 30 September 2020 - 01:18 PM

Assumption incorrect mate was a 72 XU1...

Well in that case it is totally incorrect to say it was 'used in an XU1 from factory'
It was dealer fitted, nothing more.
We are to assume this XU1 must have been a 1973 build for it to be fitted with a 1974 cast dated NL under warranty?
In which case there is no excuse really for the dealer installing an NL block when NP blocks were still readily available at that time for warranty replacement.



#24 xu1_lc

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Posted 30 September 2020 - 01:38 PM

Did the 74 NL run 4 digits ie NL 1234
after the NL or 5 ,
I'e NL 12345 like the later NL blocks?
Asking out of curiosity ?

Four digit Waz c3ce82993280e7472ab693849d70cd0b.jpg

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#25 S pack

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Posted 30 September 2020 - 01:58 PM

Assumption incorrect mate was a 72 XU1...
 

OK, thanks Ken. Facts are better than assumptions.

Still same deal though, if an NL was fitted under warranty. NP blocks or shorts were readily available for warranty replacement in a '72 XU1.
 






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