Trying to identify my block

[Vicariousness]

Hello, 

I have recently purchased a 91 gts-t, I was told that it had a rb25 block and a rb20 head. The block has a cast number of 08U. If someone could help me identify this block and maybe tell me where to look for identifying numbers for the head I would be in your debt.

Thanks.

Edited January 3, 2019 by Vicariousness

[Rusty Nuts]

RB20Det head marking  73L    RB20de head marking  72L     above number 2 exhaust port.

[Vicariousness]

45 minutes ago, Rusty Nuts said:

RB20Det head marking  73L    RB20de head marking  72L     above number 2 exhaust port.

The number in that spot is 08U. As well as 08U on block. What engine do I have?

[Rusty Nuts]

R33 and R34 vct blocks are 75T .   I read somewhere, can't remember where, so don't lay money on it, that R32 RB25n/a blocks had 08U marking.

Edited January 3, 2019 by Rusty Nuts

[Vicariousness]

10 minutes ago, Rusty Nuts said:

R33 and R34 vct blocks are 75T .   I read somewhere, can't remember where, so don't lay money on it, that R32 RB25n/a blocks had 08U marking.

So it might be a rb25de? Well it has a big turbo and allot of other upgrades, I read that wasn't good for that engine.

[Ben C34]

Does it run good? What fuel are you using? Do you not beleive previous owner for some reason?

[Rusty Nuts]

Done right Plus T engines can be awesome

[Vicariousness]

2 minutes ago, Ben C34 said:

Does it run good? What fuel are you using? Do you not beleive previous owner for some reason?

It runs great, pulls hard and boost great. Hits 1.1 bar. I use 94 in it. I am just trying to verify the engine. Really wanna know for future mods and for knowledge of the car. As I have only the knowledge of what I have been told and that cast number is the only way I know of identifying it. And I haven't found a solid answer anywhere on what engine it is.

Edited January 3, 2019 by Vicariousness

[GTofuS-T]

this thread references the rb25de head as 08U

 

 

 

[Rusty Nuts]

well there you go answers at your fingertips

 

[Gabgio Tez]

Cylinder Head Identification for RB engines

[kowalatea]

On 12/1/2019 at 8:10 AM, Gabgio Tez said:

Cylinder Head Identification for RB engines

what is your source on this information? do the RPO codes also translate to the blocks for those models. if not does the source provide a similar graph for the block identification 

[Rusty Nuts]

12 hours ago, kowalatea said:

what is your source on this information?

The source is this very forum. Iruvyouskyrine put up the information January 2019

[kowalatea]

1 hour ago, Rusty Nuts said:

The source is this very forum. Iruvyouskyrine put up the information January 

Good good, I shall keep digging and reshape the information back to this thread so as others who come across it wont need to do the digging ( that is if someone doesn't beat me to it )