What Turbo Do I Have?

[BANGN]

all i can see is the word Nissan on the side of the housing. its on a RB20 and not sure if its a RB25 turbo.

[MANWHORE]

can't tell from that angle man. Get me the number off the comp housing.

rb25 turbo = nissan 45v.

r ugly poo = nissan motors 16v

Most likely its an ugly poo turbo because you see that locking tab on the turbo - mani nut? looks untouched

[BANGN]

ok il go seee if i can remove some shit to see the front of the housing a bit better.

[MANWHORE]

you should be able to see it - there aren't many gaps, but if you grab a torch, you should just be able to see it.

alternatively, read the numbers off the rear exhaust housing for me.

rb25 turbo = 21u

vg30 = op6

ugly poo = something I forgot

[BANGN]

no way can i see anything there is just too much shit in teh way and doesnt look very easy to pull it all off.

il go have a look at that exhaust number but in the mean time the actuator has a stamp on it that says 242x02 in black writing and its stamped ASN79 or somthn

[BANGN]

it LOOKS like it says 4415 or somthn on side from a picture i took from underneath the turbo but il see if i can get a clearer shot

[MANWHORE]

actuator number doesn't mean anything. nissan didn't change thier numbers

[BANGN]

4513 pretty sure. the 4, 5 and 3 is a definate confirmation but the 1 sort of looks like a V not sure, thats teh best angle i can get.

really looks like a V but not sure.. so i guess if it was that makes it a 45V3 which yeh is off a rb25, but there is a 45V1, 45V2 as well isnt there? whats the dif between them

Edited August 16, 2007 by YEHBOI

[TTT]

it's a RB25 turbo

[BANGN]

cool thanks for the confirmation guys, so they use exactly the same flange as a rb20 i take it.

so is 14.5 asking to much?

Edited August 16, 2007 by YEHBOI

[TTT]

yes they use the same flange.. direct swap for an RB20

is 14.5 asking too much for what? the turbo?

a car?

$14.5K?

[BANGN]

lol my bad..

pounds... 1 bar

[TTT]

on what engine?

on an RB25.. yes.. it's too much.

on a smaller rb20 it should be just about as much as you'd want to put through a ceramic exhaust wheeled turbo.

all the pics you've posted have had 20V seca in the name so you could be putting this on a 4age in which case, I've seen people put 17+ through that turbo on those engines.

[MANWHORE]

It's an rb25 turbo.

45v1,2,3,4 are different revisions of the turbo. doesn't mean shit - they're almost identical.

It says 45v3 - its a v

[BANGN]

its on my R32 GTST - RB20.

why the psi differences? is that due to the fact a RB25 puts out alot more exhaust heat than the RB20?

Edited August 16, 2007 by YEHBOI

[TTT]

the RB25 is 500cc larger in capacity.

it can push out x amount more air so to speak.

so people say that the max safe boost setting for a stock R33 gtst is about 10-12psi.

and on a car that is 500cc smaller in capacity, it can handle more boost to put the same amount of strain on the turbo as it does on a lower boost setting when on the RB25.

Also, the RB20 has lower compression than the RB25 which also means more PSI to bring the power/heat to the same levels.

f*k that was a messy post.

Edited August 16, 2007 by GTST

[MBS206]

its on my R32 GTST - RB20.

why the psi differences? is that due to the fact a RB25 puts out alot more exhaust heat than the RB20?

At 10PSi on a 2.5Litre, compared to a 2L, you're putting through more air. Which means turbo spins faster, which means more heat in the turbo.

[abu]

the RB25 is 500cc larger in capacity.

it can push out x amount more air so to speak.

so people say that the max safe boost setting for a stock R33 gtst is about 10-12psi.

and on a car that is 500cc smaller in capacity, it can handle more boost to put the same amount of strain on the turbo as it does on a lower boost setting when on the RB25.

Also, the RB20 has lower compression than the RB25 which also means more PSI to bring the power/heat to the same levels.

f*k that was a messy post.

Well said.

Makes sense when you say it that way.

Thanks,

Abu

[TTT]

At 10PSi on a 2.5Litre, compared to a 2L, you're putting through more air. Which means turbo spins faster, which means more heat in the turbo.

which also means more power but that's a different point.

on one of my RB20's I bolted an RB25 turbo to, I had the usual mods except FMIC.

with the exhaust and filter being free flowing, and no boost control, the stock car would boost to 11psi. (stock is 10)

Once the RB25 turbo went on and I used a boost controller to bring it to 11 psi (I used the stock actuator instead of the rb20 one so it had 6psi stock), I put it on a dyno and it made 153rwkw.

I think a stock R32 makes around 110rwkw.

an RB25 with stock turbo at 10psi (if it isn't missing and spluttering like a shitbox) will have around the 170rwkw.

an RB20 with stock turbo at stock 10psi but with intake and exhaust mods will have around 130rwkw.

[BANGN]

cool, makes sense, cheers for the help.