9HC vs 9HD engines

[Chris570]

What's the difference?

My 2014 C4 Picasso has had a timing belt failure (despite the cambelt being changed by a supposedly reputable garage in Newport Pagnell) and it's broken a rocker on Cyl 4 (closest to the cambelt end) and as the engine has 140k on it and god knows what other damage has been caused (and 3 injectors being badly worn) I have decided to swap the engine out for a younger one (if I can find one!)

The VIN is VF7**************[VIN obfuscated, can be read by forum staff] and i'm looking for compatible engines (I know i'll need to recode the injectors).

While I'm here I intend on using the DMF and clutch from the existing engine (it's only done 6k). The car has the EGS box, do I need to depressurise anything or just carefully swap the parts over (I assume the latter as all the tolerances and wear will be the same, just bolted to a different crankshaft!) I intend on lifting the engine and box out as a whole unit from the front if that makes a difference.

Thanks as ever!

Then I can move onto getting my DS running, but so far the modern cars just keep on giving me faults!!

[frer8833]

Are you asking if you can put a 9HC longblock + top block in a 9HD engine to replace the broken part caused by timing belt failure? I don't know for sure. Citroen should know the answer.

[CitroJim]

Sorry to hear that Chris And here's hoping the problem can be easily resolved...

Likely a replacement cam and rocker will do the job. A near neighbour with a C4 Picasso had same happen and that's all that needed to be replaced. Bravely perhaps, he did all the work himself on his drive...

I must swap the cambelt on my C3 Picasso this year... It's getting near enough to the mileage when the risk goes up exponentially...

[Chris570]

Well, the short answer is yes, yes you can swap them over, the fuelling is different, otherwise it's quite simple.

Regarding the EGS items, I just left well enough alone and treated it like any other manual gearbox (just with no linkages).

I managed to get an engine delivered to the car just before lockdown, but fitted it and it ran well. This was 6 years ago though