engine number diddley doo's :)

[coco69]

hi guys,

just got a few queries about engine codes.

the engine codes for the rb20 should read rb20xxxxxxx etc correct? and the similary the rb25's should read rb25xxxxxxx etc correct?

because interestingly, my r32 has the engine code rb25xxxxxxx but im dead certain that it is an rb20, due to the orientation of the crossover pipe/bov and the fact that ive driven several rb25's and there is a noticeable difference in torque/power etc...

i also have a little plaquard on the underside of my bonnet that states:

engine: rb25

displacement: 2498 or close to 2500

i noticed this plaquard a while ago but ignored it thinking it a mistake on compliance. but now that i've realised the engine codes begins with rb25 im beginning to wonder whats going on....

any ideas?

[predator]

possibly an N/a that has an engine swap for turbo? remember that the r32 came out with RB25de late in their life.

Have you put your VIN number into the FAST software and got a feedback of what it came with from the factory?

[funkymonkey]

Mine says that I have an RB26DETT... lol fat chance... the placards put there by your compliance centre, and they put whetever looks almost right lol.

[FATGTS-R]

yeah, but he is saying his ENGINE has RB25 cast onto it.

[coco69]

gords, u got a link to that VIN number software>?

well i'm dead certain it wasn't a conversion, coz i've got full service history from day one, and its an hcr32 with all the type-m options blah blah and the factory plate states rb20 with 1998cc.

but as fatgts-r said, its the engine that has the rb25 cast onto it. and like shan said, i figured that plaquard was compliance BS, but now that i noticed the two match up, im just wondering whats goin on.

i noticed that several rb20's have an rb20 stamped onto the cam belt cover but i noticed that several were also blank, mine is blank.

im confused

[funkymonkey]

RB20DET PLASMA's didn't have it stamped and the other did or the other way around or something like that... I'll check the catalogue when I get home.

[Duncan]

I'm pretty sure than new blocks from Nissan are sold without an engine number, the builder is meant to stamp on the number of whichever block it is replacing. Maybe they just stamped a wrong number on it?

[usuckpoo]

Ermm theres a chance the numbers on the block could have been fudged...

I do know its possible to do so but i cant think of a good reason why they would do it on your car.

( In some countries they fudge numbers on the engines in the event of an engine swap where modifications on your car is illegal.)

[timbar32]

RB20DET PLASMA's

What're they??

[Rezz]

What're they??

Plasma RB20s came out with the R31/32 Skyline, C32 Laurel etc... the red top ones aswell. There are also Plasma VG30s, Plasma RB20Es... even a Plasma CA18S.

... and...

You're not going to BELIEVE what "PLASMA" means...

"Powerful & economic Lightweight Accurate Silent Mighty Advanced" engine.

I kid you not.

[timbar32]

Do you know what (if anything) is better/different about them than "normal" rb20s?? I did a google search for "plasma rb20det", but the one page related to the engine was in japanese.

[mcnamg]

hahahaha typical japanese names

[Rezz]

Do you know what (if anything) is better/different about them than "normal" rb20s??

PLASMA was the name given to the entire series of engines Nissan made from about 1985... from 1000cc (MA10s) up to 3000cc (VG30DET). I think they dropped it after the R32? Not sure about when, but there wasn't a "plain" RB20 and a "PLASMA" RB20, the whole series of engines were dubbed "PLASMA".