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Old 14.05.2021, 23:55
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Engine change

Hi All,

I would like to ask you a question about theoretical engine change in my car.

My question is, if I will change the engine in my car, for exactly the same type, without changing the HP, do I have to report it somewhere here in CH?

Basically, I was thinking to drive my car to my "home country" and change the engine for the new one and use car here is Switzerland.

Do you maybe know, if there could be a problem to pass the MFK afterwards?
I guess, it will also maybe depends about the Canton. (Mine is SG)

Thank you for your answers.
Elchover
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Old 15.05.2021, 07:26
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Re: Engine change

Like for like should not be a problem. Is the car leased? Then it will be.
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Old 15.05.2021, 11:31
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Re: Engine change

Never done this, but you certainly would need to notify the authorities of the change, as the new engine will have a different ID number from the original VIN, so that needs to be recorded on the grey card.
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Old 15.05.2021, 11:32
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Re: Engine change

Quote:
Never done this, but you certainly would need to notify the authorities of the change, as the new engine will have a different ID number from the original VIN, so that needs to be recorded on the grey card.
exactly this, at least was the case in ZH.
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Old 15.05.2021, 13:46
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Re: Engine change

Quote:
Never done this, but you certainly would need to notify the authorities of the change, as the new engine will have a different ID number from the original VIN, so that needs to be recorded on the grey card.
There is no indication of engine number on the gray card, neither for bikes nor cars (I just checked)

Also, two of my bikes have the engines swapped between them, and this has never been an issue.

Tom
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Old 15.05.2021, 13:56
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Re: Engine change

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There is no indication of engine number on the gray card, neither for bikes nor cars (I just checked)

Also, two of my bikes have the engines swapped between them, and this has never been an issue.
Normally the Engine number matches the VIN, so isn't shown or even recorded separately , but if it's been swapped and not notified you may have problems if it's ever checked, especially if the replacement engine comes from a stolen vehicle, which is of course what the system is supposed to avoid.
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Old 15.05.2021, 13:59
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Re: Engine change

Quote:
Normally the Engine number matches the VIN, so isn't separately shown, but if it's been swapped and not recorded you may have problems if it's ever checked, especially if the replacement engine comes from a stolen vehicle, which is of course what the system is supposed to avoid.
Engine numbers on my bikes are not the same as the VIN number, haven't checked the cars.

Tom
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Old 15.05.2021, 18:12
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Re: Engine change

AFAIK there is no Motornummer in the grey card, so it may happen, that no one notices the swap and you'll be fine till the next thorough check. The Motornummer is associated with the VIN of a car in the manufacturer's an dealer's databases, although I have no idea, if those are checked during the MFK.

The customs may be unhappy, if you forget to declare the new part of your car to them, because, technically, you will import an item of >300 CHF value into Switzerland. If you will declare this part to Zoll, then, probably, this information may find its way to Strassenverkehrsamt. [just thinking out loud, not completely certain about the latter statement - take it for no more than an idea]

Never did an engine swap in Switzerland, so can't tell about the local rules.

On a separate note, in the US I had to present the papers for the new engine and register the engine change with DMV (although the clerk didn't know, what to do about it, but we managed to get it into the base after 30 minutes) to avoid a criminal investigation in case the engine number doesn't match the VIN of the vehicle in the police database. When the engine number doesn't match during a check, authorities may want to investigate, whether the engine was obtained legally and installed correctly, so papers for the part and the works would be advised, although I am not aware of any direct requirements in the law. Did it "just in case", because the last thing I wanted was to get stopped somewhere in rural are and get arrest on a suspicion of grand theft auto.
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