How to tell what year and month your SR was made.

[SpeedRacer1]

Now dont get too excited because this is more of a hypothesis than fact, but it makes a lot of sense. Anyway, Nissan stamps most a lot of there parts with a little calender of when a part was in the factory. So you will find a little 91, 92, 93, 94 etc (meaning 1991, 1992, 1993, 1994 respectively) and then a dot next to the number which represents a month. So if you see that all 12 dots are stamped for 1991, and 1992, then only 3 dots for 1993 then that means that part left the factory in March of 1993. Or if you see that one had 8 dots after the 91 then it left the factory around August 1991, in which case it could be considered a 1992 model car.

Now what does this have to do with SR's? Well i've been searching for these stamps on various SR parts (for years so clearly not looking that hard). Anyway I picked up some coilpacks last week and found that they have the stamp I was looking for. These coilpacks instead of saying 91, 92 etc, they just say 1, 2, etc to save space. By looking at these numbers and dots I am thinking this tells you the month in which your coilpacks were made and hence the date your SR was made. If some of you with blacktops and redtops want to post what you find, the more info about the subject will help. Unfortunately if you dont have the stock coilpacks then then this will only help tell you how old your coilpacks are and not your engine. I have checked my engine and an S14 engine that I know was a Kouki engine because it came in the clip and they have worked out fine.

Here is a pic I took of my old coilpacks and according to the packs it would lead me to believe my engine was made around March 1991.



BTW I think these stamps can be found in other places on the engine like the upper oil pan, but the coilpacks is one of the quickest checks ive seen.

[slow s13]

very cool, this works out on my s13 black top as Feb '94
Modified by slow s13 at 9:25 AM 3/17/2005

[slow s13]

my coils went up to 5, its tuff to see but there are two dots after the 4

[9240sx]

checked my redtop,looks like october of 1993

[SpeedRacer1]

There is a slight further development. If you bought a clip and have the VIN number off of it I can tell you what month and year the car/engine was made.

If anyone wants to know just give me the VIN, example: RPS13-205205 <<would be the appropriate number I need.

[D1SR240]

Do you know if this works for Toyota too? In my auto service class I recently worked on a Lexus ES300, and the coil packs were just like that, and according to your hypothesis the engine was made in 7/93, and when I checked the sticker on the door, it said the car was manufactured in 9/93, is it possible that the engine was assembled two months prior to the assembly of the car?

[SpeedRacer1]

What the part number dates show is when the part number was made. So an ignition coil could be made in January, stored in a box for a couple months, then the car could be put together in March. So this system is kind of prone to error, but probably accurate enough for most people who dont have access to VIN numbers on front clips, or door panals.

[D1SR240]

I see, so it looks like it's true for Toyota too then.

[FAST-DATSUN]

Japan does not use 92,93,94 the use in the year of the emipor(spelling) showa2. showa10 ect.....

[Driftcardotnet]

dirftcar.net/nissanfast.zipdriftcar.net/nissanmanuals.zip

[Rusker]

Interesting.

[koolcat]

here is my coilpack. Do you think mine is a type x motor cause i bought the motor and the seller said he thinks my motor is a 95. Also, he sent me the motor with a j4 so that why im wondering



Also, here is a pic near the oil tank toward the transmission, don't really know what it means but it seem the same as the coil pack

[jdmshiz]

very interesting.

[Kalypso]

wow this thread got no love for 3 years between 05 and 08

this calls for a

[DDelambre]

I found the stamp on the bottom of the oil pan would indicate a build month of May, '91 and the stamps on the coils would be March. '91. That is if any of this information is correct