162TSI - 8 or 4 injectors?

[brad]

Asking for a mate.

Does the MK3 RS 162tsi come with just the 4 DIs or does it have the 2nd auxillary bank of 4 in the inlet manifold to reduce build-up on the valves (like the MK7 GTI)?

[Dzl_Dubba]

Just popped off the engine cover and yes it has the extra rail of injectors

[brad]

Thanks
Others will be pleased

[dArK5HaD0w]

Asking for a mate.

Does the MK3 RS 162tsi come with just the 4 DIs or does it have the 2nd auxillary bank of 4 in the inlet manifold to reduce build-up on the valves (like the MK7 GTI)?

It's the exact same engine in the mk7 gti.

[brad]

It's the exact same engine in the mk7 gti.

That's what I thought but I'm told that the ones in the USA are still 4 injectors still. This guy seemed to think the Octavia might have been short changed.

both types have the same power.

As an aside, it will be interesting to see what the tuners do with the 2nd set of injectors. A mate tunes BRZ86s and has experimented with different duty cycles for the port injectors & had some interesting results.

[dArK5HaD0w]

That's what I thought but I'm told that the ones in the USA are still 4 injectors still. This guy seemed to think the Octavia might have been short changed.

both types have the same power.

the americans usually get a different type of engine. same thing happened with the pevious gen 1 ea888, found in the mk6 gti and mk2 octavia.
we get the european (ROW) version.

vwag makes 2 engine variants:- "NA - North America" and "ROW - Rest of World"
this is how the gen 1 ea888 engines were done:-

NA(USA) MK5/MK6 2.0 TSI Engine
- CCTA
- CBFA

CCT and CBF denote the engine's mechanical structure. IE, secondary injection (CBF) vs non secondary injection (CCT). A, the 4th letter, denotes the power output for the calibration, ie both rated in the us for 207ft-lb/200hp.



ROW MK6 and A3 2.0 TSI Engines
- CCZA - A3, Octavia
- CCZB - MK6

CCZ denotes the european mechanical structure.
A and B denote a software calibration change for different power levels.
A has 200hp, B has 210hp.
A denotes the 200HP calibration. B denotes the 210HP calibration.

[brad]

Thanks

That's today's learning moment done with - I can switch off in the next meeting.

[woofy]

The US get crap really, cheap but sometimes the crappiest options at times.

[Gerrycan]

I did not realise that VW Direct Injection engines had such a bad reputation for fouling inlet valves before I bought my 103tsi.
The vRS double bank injection mitigates this to some extent, by 'washing' the inlet valve.
I read that some other manufacturers have overcome this problem by suppressing crankcase emissions to the inlet and/or revised valve timing.
Do we know if the latest VW single bank injection engines on MQB cars have rectified this problem or should I be attaching a catch can filter and/or factoring in some sort of inlet valve clean during servicing?

[GTR27]

Use upper engine cleaner each service, like sea foam, nulon foaming air intake cleaner, or Subaru upper engine cleaner.

It's not just vw engines, ALL direct injection petrol has the same problem. Newer versions like the rs have secondary injectors to improve this.

[brad]

I managed to get by with sporadic chemical intake cleaning of various types up to now (145k) although when the intake was off at 95k for water pump my mech half-heartedly sprayed around some carbon clean. The inlet valves had about 2-3mm of build-up on them and I have no idea how much he cleaned off.

Recently I bought a catch can, mainly because the price was right, I was starting to feel guilty and I was curious to se what it actually "catched".

More importantly, I've ordered a cheap 6mm borescope to feed into the air temp sensr hole & have a look around and see if there really is a problem & if there's any difference before/after chemical cleans.

[Gerrycan]

Do we know if catch cans are effective?
Mine is only at 4300 km so while there should be nothing there but we currently do a lot of short journeys and that is the worst thing for any engine.
Not terribly keen on chucking chemicals down the intake, goodness knows what they and the loosened material does to stuff downstream
The borescope sounds a good investment but until I get a job we are on a strict no frills budget

[brad]

Do we know if catch cans are effective?
Mine is only at 4300 km so while there should be nothing there but we currently do a lot of short journeys and that is the worst thing for any engine.
Not terribly keen on chucking chemicals down the intake, goodness knows what they and the loosened material does to stuff downstream
The borescope sounds a good investment but until I get a job we are on a strict no frills budget

Catch Can - some swear by them, others say they do nothing. I bought mine as an experiment. I'll trial it for 12 months & if it appears to be doing nothing I'll move it on.

Petrol is a chemical and it's not much different to any of the other intake cleaners.

Injector / inlet cleaners are various combinations of light hydrocarbons (metho? Kero?), naptha, xylene and mineral turpentine.

If you don't like any of them jus do a water spray into the inlet of a running engine. It does help.

The chemicals / gunk isn't an issue if you do the clean just before you get a service done.

Borescope was cheap - <$25 but having been unemployed once myself, probably $25 better spent elsewhere.