Silvia Club of NSW

So talking about AUst delivered ones, what is better and why?

Just the turbo's not teh whole car.

search for it

s14 would be a t28, s15 jdm would be a t28 bb,

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NVS-888

You will find one difference between the oz spec s14 and 15 turbos - A seperator between the wastegate flap and the exhaust wheel. Thats really the only difference.

Jap ones are a different story though. Both Jap S14 and 15 are BB

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Disclaimer: I actually DO know everything

Sil80 - SR20DET 231rwkw
Silvia Race Nugget - SR20DET 225rwkw
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S15 turbo is newer and that's the only reason it's better.
Not sure if the seperator will do too much but every little bit to get rid of turbulance is good I guess.

as for BB and non BB... only way to tell are from the numbers on the turbos.
the Garrett part numbers.
Just because it is a JDM model, doesn't make a BB. this has been found before by people upgrading their JDM S15 turbo's and finding they are not BB.

here is what to look for..

466541 = ball bearing
466543 = bush bearing

for the second bit of the number

-001 = S14 turbo (no splitter between wastegate and turbine exit)
-002 = S15 turbo (splitter between wastegate and turbine exit)

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"Relax.. you'll live longer..."

This is the one you want:

JT - that's a pretty picture, but it doesn't tell us anything apart from part of a helpdesk website address.
hahahaha

that's definitely a S15 turbo as it has the splitter..
but what part numbers are on it..
I can't remember where the numbers are.. possibly on the core between the compressor and exhaust side of the snail.

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"Relax.. you'll live longer..."

Well since he has a JDM S15 you could only imagine its the BB.
But well spotted re: the Helpdesk

Another key difference that I've seen in 3 out of 3 low km S15 turbos is radial hairline cracks in the turbine housing (under w/gate flap and down into housing entry) - never seen an S14 housing do this.

These cracks don't seem to hamper performance though as they are usually (well - hairline) thin.

Anyone else?

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SR20DET 1971 Datsun Bluebird 1800SSS Coupe - 11.58 @ 122.40 MPH
Historic 1971 Datsun 1600 Wagon - L series nostalgia
Historic 1970 Datsun 1600 Sedan - Budget track racer project
Historic 1967 Datsun 1000 Wagon - A series resto

hahahahaha


here is the shot of the CHRA (its upside in this shot)



The tag says:


C8 1800J
14411-911-00
466541-4

if in doubt, call the helpdesk LOL

That's the important number.
I can't remember all the various other numbers off the top of my head (466543 is one of the non BB S15 ones I think)

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The Engine Whisperer - fixer of things

well there you go ballbearing boy..

off topic..
JT I saw you the other day in my area.. but I couldn't keep up with the barina.

No you weren't speeding..
but the barina had a full tank of fuel and the road was not a decline so ... you know.. I couldn't get to the speed limit..

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"Relax.. you'll live longer..."