Datsun-240z Vs Fairlady-z432

[kats]

On 5/26/2004 at 12:32 AM, kats said:

Hi,

I am also very much interested in this thread.

My L24-005562 has a casting code "E31" then "02121" on the block.

mdbrandy,your casting code "9901F" make me think about"the date of casting" What do you think if it shows "1969 Sep 01 F"

Does it make sence? If my"02121" will be read "0212I"?If so,will it show 1970 Feb 12 I"?

I would like to see more casting codes close to my build date early 1970.

Thank you,

kats

I like this thread very much! 
Kats

Edited May 7, 2022 by kats

[26th-Z]

Had to look at my casting numbers.  HLS30-00026 has engine # L24-02338 casting # 9828A.  HLS30-00027 has engine # L24-02162 casting # 9901D.  26th is a November car.  27th is an October car.

[Gav240z]

On 5/5/2022 at 9:38 PM, kats said:

Kamesawa san , who helped me out today , owns 1972 Skyline GTR ( KPGC 10 ) . His car , is non restored, preserved condition, so much original parts all over the car . He loves non restored car , so he said I must not repaint 2146 . And I am thinking it is nice to remain as it is . 
Kats

Hi Kats,

I used to think I love them unrestored also, but it really messes with my OCD. Especially because on my white 71 the paint has flaked off in areas. I'm thinking I'll try and patch and touch it up, but leave it as rough and ready as I can, until the day I can't take it anymore and decide to refinish it properly.

The hard part is knowing what parts to restore on it. For example do you replate hardware? Repaint the engine block? Air cleaner? Etc..? Reskin the dashboard?

[kats]

18 hours ago, 26th-Z said:

Had to look at my casting numbers.  HLS30-00026 has engine # L24-02338 casting # 9828A.  HLS30-00027 has engine # L24-02162 casting # 9901D.  26th is a November car.  27th is an October car.

Hi Chris, thanks for sharing your two super early cars engine data . I think

L24-02338 #9828A , 1969 August 28th A .

L24-02162 #9901D , 1969 September 1st D .

It is always an exciting thing to see those rare numbers in our cars !!

Kats

 

[26th-Z]

Hi Kats,

And the same strange situation with the engines: a block cast earlier with a higher machine number than a block cast later (although days later).  I would assume that the engine ID number was assigned when the casting was machined?  What do the 'A' and 'D' mean?

[HS30-H]

12 minutes ago, 26th-Z said:

And the same strange situation with the engines: a block cast earlier with a higher machine number than a block cast later (although days later).  I would assume that the engine ID number was assigned when the casting was machined?

Probably later. Either when the engine was complete and signed-off as OK, and/or when it was assigned to a destination/batch of cars.

Factory replacement/motorsport L24 blocks were supplied machined, but without an engine number. Seems to indicate the above.

 

No real surprise that engine block casting dates/batches didn't match up with assigned engine numbers in a completely linear fashion. Stack up a rack of block castings and they could get mixed fairly thoroughly as they passed through the stages of being cleaned, machined and built up into complete engines. Last on the rack, first off the rack etc. All coming out in the wash over a certain time period. I wouldn't expect very many "Oh! I just found one down the back of the shelf" type scenes.

21 minutes ago, 26th-Z said:

What do the 'A' and 'D' mean?

Batch/shift number I should think? Not enough letters seen for them to be days. Too many to be weeks of the month. QC would want a trace line to help isolate any problem batches.  

[26th-Z]

In today's lingo, that would be called a ghost block.

Makes sense that the alphanumeric digits are casting lots or batches.  I could imagine a number of individual blocks being cast at the same time.  Perhaps position of the mold in the casting process?  But that would assume only one casting process per day.

I see what you mean by the engine number assignment.  Yea, Ok.

[kats]

On 5/7/2022 at 11:21 PM, Gav240z said:

Hi Kats,

I used to think I love them unrestored also, but it really messes with my OCD. Especially because on my white 71 the paint has flaked off in areas. I'm thinking I'll try and patch and touch it up, but leave it as rough and ready as I can, until the day I can't take it anymore and decide to refinish it properly.

The hard part is knowing what parts to restore on it. For example do you replate hardware? Repaint the engine block? Air cleaner? Etc..? Reskin the dashboard?

Hi Gavin, that is a point , what I am thinking to do for my 2146 is , just giving back to life again . Not trying to show in a concourse , just enjoy for my own . Some new parts and old parts are mixed up in a engine bay , it must be weird looking!

Kats

[kats]

Thanks Alan! 
Your input reminds me this , a new engine block from a Nissan parts department , only shows “ S20” on the rear end of the top surface. 
Kats

 

[xs10shl]

This one only goes to 7.5. 

 

 

[xs10shl]

Skip ahead to the noise: https://youtu.be/imsbLkTT9Ac?t=748

 

[HS30-H]

19 hours ago, xs10shl said:

This one only goes to 7.5. 

 

 

Quite a lot to discuss (nitpick) there.....

Worthy of its own thread, I'd say.