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[TheBoy]

It does more on the dti's

Interesting to see. Is it a fault. Or as designed?

What was the original power output as it left the factory? Do we know?

A claimed 100bhp. Approximately the same as other 2l DBW non common rail tractors from the time.

I had a couple of Rover 400's with a (claimed) 105bhp L series tractor engines, and they were both decent engines to blat about in, and always gave over 50mpg over a tank, unless I'd driven most of the tank (then it was usually mid to high 40s). I'd kinda expected the Zaffy DTi to be around the same ballpark in performance and economy (a little less due to extra weight and height). Maybe my expectations are simply too high 

[TheBoy]

Would it upset the ECU/fuelling?

(GM 2.0DTi, which wasn't running right before, but then about a month ago started running *really* badly)

Is it before or after the turbo? Guessing before but can't see why it should split without some pressure behind it unless it is collateral damage from some "event" 

Before the MAF, thus before the turbo.

Probably a combo of jubilee clip (crap things), age and vibration (turbo obviously bolted to engine, airbox obviously attached to chassis, with no concertina pipe, so this takes brunt of the vibration in this particularly crap GM design).

[chrisgixer]

It does more on the dti's

Interesting to see. Is it a fault. Or as designed?

What was the original power output as it left the factory? Do we know?

A claimed 100bhp. Approximately the same as other 2l DBW non common rail tractors from the time.

I had a couple of Rover 400's with a (claimed) 105bhp L series tractor engines, and they were both decent engines to blat about in, and always gave over 50mpg over a tank, unless I'd driven most of the tank (then it was usually mid to high 40s). I'd kinda expected the Zaffy DTi to be around the same ballpark in performance and economy (a little less due to extra weight and height). Maybe my expectations are simply too high 

Surely the Zafira weighs a lot more than a 400? Worth checking the weight figures?

[Andy H]

Would it upset the ECU/fuelling?

(GM 2.0DTi, which wasn't running right before, but then about a month ago started running *really* badly)

Is it before or after the turbo? Guessing before but can't see why it should split without some pressure behind it unless it is collateral damage from some "event" 

Before the MAF, thus before the turbo.

Probably a combo of jubilee clip (crap things), age and vibration (turbo obviously bolted to engine, airbox obviously attached to chassis, with no concertina pipe, so this takes brunt of the vibration in this particularly crap GM design).

Is there any way that the inlet pipework might collapse due to suction inside the pipe?

[Kevin Wood]

Is there any way that the inlet pipework might collapse due to suction inside the pipe?

I've seen a 3.2 Omega that drove like a 1 litre due to this. Previous accident damage had damaged the pip into the bottom of the airbox and it closed up under full throttle.

A split here would cause warm air to be ingested, On a petrol car I've had that cause a noticeable blunting of performance but on a tractor it goes through the intercooler afterwards anyway, so not sure warm air would make much odds.

[TheBoy]

It does more on the dti's

Interesting to see. Is it a fault. Or as designed?

What was the original power output as it left the factory? Do we know?

A claimed 100bhp. Approximately the same as other 2l DBW non common rail tractors from the time.

I had a couple of Rover 400's with a (claimed) 105bhp L series tractor engines, and they were both decent engines to blat about in, and always gave over 50mpg over a tank, unless I'd driven most of the tank (then it was usually mid to high 40s). I'd kinda expected the Zaffy DTi to be around the same ballpark in performance and economy (a little less due to extra weight and height). Maybe my expectations are simply too high 

Surely the Zafira weighs a lot more than a 400? Worth checking the weight figures?

I am making an assumption that a 400SLDi is about 1.2t and a Zaffy 2.0DTi is about 1.4t, so I had accounted for a couple of fatties in the 400. But, yes, maybe I should check weights