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[Sixstring]

Please can someone educate me on the differences between the two diesel models, the TD and the DTI. am relatively good with engines, but fail to see why one is more desireable than the other.

thanks in anticipation......

Mike.

[henryd]

as far as I know td is bmw straight 6 and dti is vauxhalls own 4 pot

[hoofing it]

dti has common rail, td hasn't (I think )

[Entwood]

I believe the TD is indirect injection .. to a swirl pot outside the combustion chamber,  the DTi is direct injection into the cylinder ??

indirect injection keeps the temperatures lower and the mixture does not have to be quite so accurate, so mechanical injectors work

direct injection is only possible with electronic injectors and high temperature alloy pistons

Thats my understanding anyway 

[Dany]

dti has common rail, td hasn't (I think )

Right

[Marks DTM Calib]

I believe the TD is indirect injection .. to a swirl pot outside the combustion chamber,  the DTi is direct injection into the cylinder ??

indirect injection keeps the temperatures lower and the mixture does not have to be quite so accurate, so mechanical injectors work

direct injection is only possible with electronic injectors and high temperature alloy pistons

Thats my understanding anyway 

Not quite.

The DTi is direct injection but, its not common rail.

The DT does use swirl pots.

The DTi is the under rated Vx 4 pot and the DT is the over rated BMW 6 pot 

[Marks DTM Calib]

dti has common rail, td hasn't (I think )

Right

CDTi has common rail.....DTi does not

[MickAP]

Please can someone educate me on the differences between the two diesel models, the TD and the DTI. am relatively good with engines, but fail to see why one is more desireable than the other.

thanks in anticipation......

Mike.

DTi is more common, more economical, not sure about reliability.
TD not so common now, economy good if driven sensibly, chipped or not. Reliability good if serviced correctly.
I think the desirable bit is, well it's a BMW 6 pot and it seems to be the clincher, rather like 4 pot v 6 pot petrol Omega's, most would choose the 6 pot.

Mick

[MickAP]

dti has common rail, td hasn't (I think )

Right

CDTi has common rail.....DTi does not

Mark, on the subject of CDTi engines.
What's your thoughts on these, the one that's fitted to the Vectra that is (sorry) Is it good, one to avoid, what to watch out for. You have the Zafira, is it the same engine?

Sorry to hi-jack this thread.

Mick

[Marks DTM Calib]

dti has common rail, td hasn't (I think )

Right

CDTi has common rail.....DTi does not

Mark, on the subject of CDTi engines.
What's your thoughts on these, the one that's fitted to the Vectra that is (sorry) Is it good, one to avoid, what to watch out for. You have the Zafira, is it the same engine?

Sorry to hi-jack this thread.

Mick

Same engine

Key issues are:

DMF - Can rattle particularly if the previous owner has a digital foot on the clutch

EGR - Can stick, easily cleaned, no big issue.
 
Swirl Flaps on the 150 bhp 16V - Pretty much sorted as of about 2007 with most troublesome early ones having been changed for the later type.

Quite a driveable unit....mine returns 50+ Mpg every week without fault and I have covered 30K+ miles in it.

[Marks DTM Calib]

Should add, the 3.0 V6 CDTi is quite nice

[johny5]

I once had a W reg 2.2 DTI Vectra as a hire car, i was very pleased with it and the performance was great.

[hoofing it]

6pots sounds better than girly 4pots
thanks for the wright answer mdtm

[Sixstring]

So the BMW lump is the better engine for performance/economy???

[Seth]

So the BMW lump is the better engine for performance/economy???

Take a look at mine Mike when you come over!