Dr Zoidberg

I believe the 2.0 in the old shape superb was an 8v version , but I'm pretty sure the Octavia engines were all 16v

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Alex

"I laugh in the face of danger, then I hide until it goes away"

www.drzoidberg.co.uk

Jonah81

Check the engine code. BKD is 16-valve, BMM is 8-valve. At the end of last year if you bought a 2-litre TDI Octavia with DPF (at least in here) it was always with a 8-valve engine (not sure about the RS though). Haven't checked since last November though.

Engine code will tell you how many valves you have.

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Feb 2008 Octavia 2.0 TDI Elegance 140bhp Black Magic/Ivory /w Audience, xenons, front & rear parking sensors, steering wheel with radio controls, 16" Lyra alloys, TPM etc...

cheezemonkhai

It depends on which 2.0 TDI.

On the superb it's an 8v.


I have to say I thought the TDI PD170 was a 16v head too.

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skomaz

Gents,

I assumed that since this was the Octy II section we were talking Octy II 2.0 TDi's? I'm aware that the Superb TDI 2.0 was an 8 valver but, as noted above was pretty certain all the Octy II 2.0 TDi's were 16 valver's, ragardless of DPF or not.

Although apologies I do note I did only say "Skoda" 2.0 TDi's rather than "Skoda Octavia" 2.0 TDi's in one post above I'll change it so it's clear...

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If everything was as reliable as a VW... My Skoda would be at the bottom of the JD Power tables!

Octavia II 2.0 TDi 4x4 Estate and Fabia I 1.9 TDi Estate and Modified Mk1 Mazda MX-5 1.8iS

turnoot

This is turning out to be quite involved.

As the instigator of this thread, I'm beginning to feel guilty.

However, going by Jonah81's knowledge, I have a 103kw BKD which by his reckoning is a 16V engine, which probably explains the low end lethargy.

But, if there's such confusion out there with a mixture of 8v and 16v 2.0 PDI engines, there has to be differences in performance. They won't all have the same torque and power characteristics; they won't all have the same performance figures; they won't all have the same fuel consumption.

If you read a Road Test, which engine was tested?

Confused? You should be...

cheezemonkhai

If it's a PD140 in an Octy II (non VRS TDI, not a scount and one other special model maybe the 4x4) then it will be a 16v design.

__________________
Cars make CO2 and trees absorb CO2. By driving your car you're feeding a tree and helping the environment.

Ivan-DK

Last year in Denmark we have 2.0 Tdi - PD Skoda, seat, VW and Audi.
With out DPF 16 valve
With DPF 8 valve
Now all 2.0 Tdi PD-engine have DPF and 8 valve in Denmark

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Cheers
Ivan

2.0 Tdi - DSG

Ivan-DK

Give me a link where Skoda says 16 valve with DPF !!
It might be fun to see the difference in the various countries. (In Denmark a Elegance have only 15" aloys)

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Cheers
Ivan

2.0 Tdi - DSG

Jonah81

AFAIK it was exactly the same here in Finland. At least in November it still was, haven't checked since.

That was one of the reasons I didn't get the DPF. That and the 800 euro price difference.

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Feb 2008 Octavia 2.0 TDI Elegance 140bhp Black Magic/Ivory /w Audience, xenons, front & rear parking sensors, steering wheel with radio controls, 16" Lyra alloys, TPM etc...

skomaz

Latest Skoda UK brochure:

Octavia Brochure

Page 12 and 13 note 2.0 PD 140 BHP with DPF for 4x4 and Scout and Page 23 notes engine spec for 4x4 and Scout as 4 valves per cylinder...

__________________
If everything was as reliable as a VW... My Skoda would be at the bottom of the JD Power tables!

Octavia II 2.0 TDi 4x4 Estate and Fabia I 1.9 TDi Estate and Modified Mk1 Mazda MX-5 1.8iS

Niall

Just had a look through the brochure, free upgrade from 4x4 to Scout of the same engine. So basically a Scout for 4x4 money unless you desperately want a 1.9 Diesel.

Thats a belter of an offer! (If a mildly capable offroad Estate car is your kind of thing......)

You'd almost think it was getting difficult to sell cars as people are finding themselves less flush.......

Niall

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07 Octavia Scout TDi
--------------------------
All the Scout standard toys + Xenons, MFSW, Maxidot, Curtain Airbags, OEM Bluetooth.

Ivan-DK

Yes but they does not mention the DPF on page23! is DPF an option in GB?
And now you must read some danish

www.skoda.dk | Modeller | Octavia | Priser og teknik

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Cheers
Ivan

2.0 Tdi - DSG

skomaz

No DPF is not an option in the UK... it's either fitted or not (I guess as needed to meet the required emissions standards).

All I can suggest is that there are market differences across the world as one would expect. Either that or some of the technical information in the brochures or on the websites is incorrect.

__________________
If everything was as reliable as a VW... My Skoda would be at the bottom of the JD Power tables!

Octavia II 2.0 TDi 4x4 Estate and Fabia I 1.9 TDi Estate and Modified Mk1 Mazda MX-5 1.8iS

Jonah81

Again. Check the engine codes. Or call a dealer.

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Feb 2008 Octavia 2.0 TDI Elegance 140bhp Black Magic/Ivory /w Audience, xenons, front & rear parking sensors, steering wheel with radio controls, 16" Lyra alloys, TPM etc...

Ivan-DK

Good idea, but it does not explain why skoda (and VW) went from 16 to 8 valve on the 2.0 PD when it's with dpf. Each case in denmark

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Cheers
Ivan

2.0 Tdi - DSG

Jonah81

Maybe there is a difference in the exhaust gas temperature. Who knows.

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Feb 2008 Octavia 2.0 TDI Elegance 140bhp Black Magic/Ivory /w Audience, xenons, front & rear parking sensors, steering wheel with radio controls, 16" Lyra alloys, TPM etc...

skomaz

OK hellish confused now...

I checked my engine code last night and guess what... BMM... meaning 8 valve with DPF on a 07 plate Octavia 2.0 TDi 4x4!

So I guess the brochure is incorrect and some 140bhp Octavias are 8 valve as suggested by our friends in Europe.

Apologies as it would seem I have been proved wrong...

__________________
If everything was as reliable as a VW... My Skoda would be at the bottom of the JD Power tables!

Octavia II 2.0 TDi 4x4 Estate and Fabia I 1.9 TDi Estate and Modified Mk1 Mazda MX-5 1.8iS

Jonah81

It's funny how you cannot find that info from the brochures, at least in here you can't.

I'd be interested to know if the 140bhp DPF diesels still all are 8-valve engines, and there any difference in the way how it drives. The 16-valve version has most of it power at over 3000 rpm, and can fell quite lethargic at the low end. Haven't driven a 8-valve so cannot do a comparison. They have the same specs though, but maybe there is a difference in how the engines pick up revs or something like that.

Oh and I found out why they use 8-valve with DPF's. It's the exhaust gas temperature. It is easier to do the "burn-cycle" with them. Has anybody here had a problem with TDI RS and it's DPF? I remember seeing some threads about the problems people are having with it. Well.... it is a 16-valve engine

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Feb 2008 Octavia 2.0 TDI Elegance 140bhp Black Magic/Ivory /w Audience, xenons, front & rear parking sensors, steering wheel with radio controls, 16" Lyra alloys, TPM etc...

greg123

A 16v engine is generally a poor idea on a diesel, or a petrol that is designed for low to mid range punch for that matter. The reason being is that you have to be doing quite a few revs before the lack of valves starts to hamper breathing on an 8v motor. Now a 16v wont' hurt, but to exploit the better upper range breather normally it's cammed, ram air matched and set up to be efficient in the upper rev range. As usual you don't get something for nothing and lose in the low end.

There is one important advantage on a diesel however and I speculate this is often the driving factor, the injector can sit central in the cylinder head and directly down in the piston. 2v designs require and angle and it's harder to make an ideal combustion chamber shape. This relates to emissions too.

Essentially I am not a fan of 16v designs period. Typically one less camshaft, gearwheel, easier cambelt, 8 less valves to grind in and you find that in the usable daily driving rev range there is no loss of power. Not to mention lighter and cheaper.

As for the outright loss of power, a slightly bigger cc or slightly more turbo boost easily makes up for the extra 8 valves. What has to be remembered is that those valves only help at high rpm and they are SMALLER than 8v valves, so you would think it's twice the size, but actually it's 4 small valves vs 2 large ones. It is better flow, but not much.

I find it very strange they make 3 diesels right now, all so similar. Tooling and production costs for that is not good. Future emissions laws probably to blame I guess.

Greg.