Quick turbo question.

Django x2

Django x2

Django x2

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Correct me if I'm wrong.

This is regarding the twin turbo BMW units around at the moment.

Sequential and Parallel turbos are different.

Parralel is two turbos of the same nature sharing the charging duties, one turbo for left bank and one for right bank.

Sequenstial is one small turbo then spining up a larger turbo, both 'in line' if you will.

I was under the impression that the new twin turbo engines in both petrol and diesel BMWs was sequential. It's not.

Only the diesels are sequential. The petrols are parallel.

I was reading the Z4 s35i brochure today and noted this in the blurb that the x35i engine is parallel turbos.

Was anyone else aware of this or have I just had my head buried in the sand? I thought they were both sequential.
 
Lucero said:
Correct me if I'm wrong.

This is regarding the twin turbo BMW units around at the moment.

Sequential and Parallel turbos are different.

Parralel is two turbos of the same nature sharing the charging duties, one turbo for left bank and one for right bank.

Sequenstial is one small turbo then spining up a larger turbo, both 'in line' if you will.

I was under the impression that the new twin turbo engines in both petrol and diesel BMWs was sequential. It's not.

Only the diesels are sequential. The petrols are parallel.

I was reading the Z4 s35i brochure today and noted this in the blurb that the x35i engine is parallel turbos.

Was anyone else aware of this or have I just had my head buried in the sand? I thought they were both sequential.
Click to expand...


I thought they were sequential also. /goes back under rock
 
Didn't know that, never really cared though tbh :p
FWIW though, sequential setups do not necessarily have a smaller and larger turbo, they can be identical. This is how the Toyota twins work, at low engine speed/load conditions all the exhaust gas is routed through turbine #1, and as the load/rpm increases it is split gradually until both have equal flow.
 
[more pointless BMW engine trivia]Did you know the engine in the 3.0 Turbo BMW's is actually the previous M54 engine turbocharged and not the newer N52, because apparently the bore/stroke thingymabob is square and thus more suited to turbocharging[/more pointless BMW engine trivia]
 
[TW]Fox;14557222 said:
[more pointless BMW engine trivia]Did you know the engine in the 3.0 Turbo BMW's is actually the previous M54 engine turbocharged and not the newer N52, because apparently the bore/stroke thingymabob is square and thus more suited to turbocharging[/more pointless BMW engine trivia]
Click to expand...

Rofl ;)

I found it interesting if i'm totally honest. I can understand the sequential side to the diesels being suited over parallel but just assumed the petrols were sequential too.
 
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[TW]Fox;14557222 said:
[more pointless BMW engine trivia]Did you know the engine in the 3.0 Turbo BMW's is actually the previous M54 engine turbocharged and not the newer N52, because apparently the bore/stroke thingymabob is square and thus more suited to turbocharging[/more pointless BMW engine trivia]
Click to expand...

I thought you were James May for a second.

Sorry.
 
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