On engine changes and Insurance Categories

[anonymous-user]

I've been eyeing out motors to replace my supermoto's motor. Having never been through this before, it seems a simple job of filling out a V5 form if you do change the motor (https://www.gov.uk/change-vehicle-details-registration-certificate/what-evidence-to-give). I guess the question is does an ebay receipt count as an invoice?

There is a very good looking LC8 motor on ebay, but the alarm bells are ringing with "no engine numbers" due to being a "bat (sic) B bike". Initially I completely wrote this off, but a low miles clean motor out of a crashed or damaged bike written off due to insurance is kind of exactly what I'm looking for. There seems to be conflicting info about Cat B requiring the frame only to be destroyed, but some stuff online seems to suggest sometimes the motor also has its engine numbers removed. Thats a bit odd, as even as a track bike some places will require engine/frame numbers visible.

So, whats the deal here? Should a CAT B bike have an engine number? If not, is it okay to transplant? What would be updated with the DVLA if no engine number is present?

First and foremost I don't want a stolen motor, both contributing to the problem and dealing with the potential hassles.

And as an aside, anyone know a good source for KTM motors?

[anonymous-user]

Shameless bump

[zzrman]

I'm not an expert on KTMs but I'd be very surprised if each engine they produce didn't have a number. I expect it's out of a stolen bike and they have attempted to file the number off.

[crofty1984]

Very suspicious. I'd think it's stolen. Why would an insurance company go to the trouble of grinding off an engine number?

[Krikkit]

Yeah don't touch it with the longest of bargepoles imho.