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4 hours ago, GTSBoy said:

The whole place?  Note that I'm not unfamiliar with the UK, I've spent a bit of time there.  Never heard it used in that way.

It's international English here marveling is not a far fetched word in either spelling.

The Queen would possibly not use it. But the rest of the population has no issue with elevator (lift), holidays (vacation),  gas (petrol), highway (motorway), apartment (flat) or marveling :)

There is no way that anyone in the US uses marvelling in that way.  Nor Australia.  Nor Canada.  Excluding India, which we will ignore because there is no case for normalising the way that they use (abuse/destroy) English, that pretty much leaves the UK and a few places in Africa and SE Asia.....which I have also spent a lot of time in and never heard anyone use it.

When I hear myself think the word in my head, I hear it with an Ali G accent.

  • Like 1

Yeah marvelling and contemplating have entirely different meanings....

In any case, yeah, OP6 is the better housing to use if you ever really want to lean on the thing. Not often that people have both to choose from, and typically not really worth "upgrading" to if you already have a hiflow with the 21U housing.

That said, the Turbo is pretty much the most important part of the car for performance, so unless for some reason you must have stock turbine housings, or are aiming for 220kw don't use one.

21 hours ago, hypergear said:

OP6 is made for a Neo engine, and it has higher CPR, and more VCT cam angle.  Fitting that housing to a normal R33's high flow will result in an average of 500RPM worth of lag and increase HP by roughly 15kws. 

I think you'll find the static compression ratio is the same . Lower volume combustion chamber and the middle of the piston crown is lower . On the R33 spec RB25DET pistons the "plateau" is taller effectively giving deeper valve head reliefs . From memory the Neo turbo pistons may have the oil cooling channels behind the ring pack area like RB26 pistons do .

Pretty sure the Nissan WSM shows the static CR as 9.0:1 .  And they used a slightly larger side mount intercooler .

A

13 hours ago, Kinkstaah said:

Yeah marvelling and contemplating have entirely different meanings....

In any case, yeah, OP6 is the better housing to use if you ever really want to lean on the thing. Not often that people have both to choose from, and typically not really worth "upgrading" to if you already have a hiflow with the 21U housing.

That said, the Turbo is pretty much the most important part of the car for performance, so unless for some reason you must have stock turbine housings, or are aiming for 220kw don't use one.

I'm at 260RKW with the currently installed hybrid, or did you mean 320RKW?

Alas I prefer responsiveness to top end since the car is used 99% on public roads.

5 hours ago, discopotato03 said:

I think you'll find the static compression ratio is the same . Lower volume combustion chamber and the middle of the piston crown is lower . On the R33 spec RB25DET pistons the "plateau" is taller effectively giving deeper valve head reliefs . From memory the Neo turbo pistons may have the oil cooling channels behind the ring pack area like RB26 pistons do .

Pretty sure the Nissan WSM shows the static CR as 9.0:1 .  And they used a slightly larger side mount intercooler .

A

You're correct .. same compression ratio

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