FJ engine numbers - how high do they go ?

Ben D
Ben D

4:38 AM - Apr 04, 2012 #1

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
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Anonymous
Anonymous

9:19 PM - Apr 08, 2012 #2

got three blocks highest number was only 35756
i reckon you might be onto something there unless the block has been cooked that bad its discoloured the cast iron?
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Ben D
Ben D

3:16 AM - Apr 10, 2012 #3

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
No , this block was in very good condition, the cast iron looked very different to some of the earlier blocks I have seen (engine numbers 10,000 to 40,000) The number was FJ20 R 5xxxx
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len
len

9:40 AM - Apr 10, 2012 #4

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
Just checked my 3 blocks
all under 20,000
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Joined: 7:12 AM - Jul 24, 2008

5:23 AM - Apr 16, 2012 #5

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
I have a block with a larger 2 then a gap then 38xxx
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Joined: 8:23 PM - Oct 29, 2009

11:33 PM - Apr 25, 2012 #6

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
Hi Ben, one of the blocks that i have is the number 047614;
Btw do you know what are the differences between the S110 and the DR30 intake manifolds?
From looking at the pics they seem to be the same, ut i've heard that they aren't...
By the way do you have something for sale?
Regards
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euan
euan

9:36 PM - Apr 26, 2012 #7

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
I have a block with 57038 on it
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4banga
4banga

6:40 AM - Apr 02, 2017 #8

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
I have a 54980 engine number. 1 thing i noticed is the head has a 3 cast under the r30 not a two and one like most other fjs. Anyone else got a 3 cast into the head ?
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Joined: 7:45 AM - Mar 17, 2007

2:29 AM - May 19, 2017 #9

Hi all,

I was just wondering what the highest FJ20 engine number anyone has seen ? I have an engine here which is late model DR30 RSX, with an engine number over 57400, meaning that Nissan made at least 57,400 of these things. This engine also has the letter "R" stamped in front of the number itself, so it is R574xx. Has anyone else seen a FJ20 with "R" preceding the engine number and if so, any ideas what it means ? Could it be "R" for "racing" and the factory made a short run of different blocks at the end of the model life while they were being raced in group A ? The colour of the iron in the block seems to be a bit different to the other ones I have seen .

Any ideas ?
I have an engine FJ20#024283 and the head has R20 with a 3 below it?
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