Do we have 2 BNR S4 versions?

[f1puertorico]

Stumble upon this...

 

[blackms3_71]

I see no difference

 

[AYOUSTIN]

I'm guessing he's talking about the compressor cover inlet. The one picture is kind of blurry, might just be some bad quality.

 

[f1puertorico]

The inlet taper inside while the other on doesn't taper.

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[Redline]

Are the OD on the inlets the same?

 

[f1puertorico]

Bryan confirmed it's a "revision". He stated that he always do small revisions on every turbo to gain efficiency.

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[Taf0422]

Also early turbos have 17psi spring and later ones have 20 psi wastegate spring

 

[Gandalf]

Some have called it a S5

 

[Taf0422]

Some have called it a S5

Its not...don't worry. Lol


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[blackms3_71]

Which is the newer one? The tapered one?

 

[Taf0422]

Which is the newer one? The tapered one?

New one is not tapered where the 1st revision has the taper


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[Redline]

New one is not tapered where the 1st revision has the taper


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So what size ID coupler do you need to connect your intake to the v1? To the v2?

 

[Taf0422]

So what size ID coupler do you need to connect your intake to the v1? To the v2?

Still the same size. Need a 3" coupler. Its just the way he machined the inside


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[Redline]

So the inducer diameter on the compressor wheel is much larger on the v2, apparently.

 

[PURPFOX]

HMM, Still want for stock block.

 

[NeVerSeen]

17 psi spring pressure?? At 0 wgdc mine was at 13psi.

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[blackms3_71]

I just ordered the bnr s4. How do i know what spring pressure i have.

 

[Redline]

I just ordered the bnr s4. How do i know what spring pressure i have.

Run a base map with zeroed out wastegate duty cycle. That'll also show you if you're creeping, but that generally happens more/gets much more prominent when it's cold outside.

 

[blackms3_71]

Run a base map with zeroed out wastegate duty cycle. That'll also show you if you're creeping, but that generally happens more/gets much more prominent when it's cold outside.

Will do thanks

 

[blackms3_71]

Just received mine yesterday.