Engine change

rab60bit · 19th February 2023, 18:23

I've acquired a replacement engine for my KV6. The project car has been SORN for over 3 years with a cooked engine. Project for the summer is to effect the engine transplant - when I eventually re-register the car the V5 will need to be amended, is it just a case of submitting the 'new' engine number or shall I require any sort of proof/additional documentation?

tonybel · 19th February 2023, 21:07

while im sure someone will come on eventually and tell you the correct procedure, i have never changed an engine number on any car or motorcycle i have swapped engines on, including my KV6 10 years ago. I have never had a problem with an mot,numberplate swap or sale.

SD1too · 20th February 2023, 07:50

Quote:

Originally Posted by rab60bit

... when I eventually re-register the car ...

Hi John,

You won't need to "re-register" your car. I'm pretty sure that to cancel a SORN you simply tax the vehicle and its SORN status is automatically lifted (from memory the last time I did it).

Quote:

Originally Posted by rab60bit

... the V5 will need to be amended, is it just a case of submitting the 'new' engine number or shall I require any sort of proof/additional documentation?

Regarding the engine change, I would ask DVLA directly, preferably in writing. It could be that they won't change the engine number from the original since that in itself would tell any vigilant prospective buyer what they need to know.

Simon

Matt_75 · 20th February 2023, 07:55

DVLA site here lists evidence needed to update engine details on the V5: https://www.gov.uk/change-vehicle-de...idence-to-give

rab60bit · 20th February 2023, 10:12

Quote:

Originally Posted by Matt_75

DVLA site here lists evidence needed to update engine details on the V5: https://www.gov.uk/change-vehicle-de...idence-to-give

Matt, quite clear, thanks. Saved me a search.

rab60bit · 20th February 2023, 10:13

Quote:

Originally Posted by SD1too

Hi John,

You won't need to "re-register" your car. I'm pretty sure that to cancel a SORN you simply tax the vehicle and its SORN status is automatically lifted (from memory the last time I did it).

Regarding the engine change, I would ask DVLA directly, preferably in writing. It could be that they won't change the engine number from the original since that in itself would tell any vigilant prospective buyer what they need to know.

Simon

Simon, thank you - engine change, V5 must be updated/notified to DVLA.

SD1too · 21st February 2023, 07:08

Quote:

Originally Posted by rab60bit

Simon, thank you - engine change, V5 must be updated/notified to DVLA.

Yes, thanks to Matt's useful research.

Simon

19th February 2023, 18:23	#1
rab60bit Posted a thing or two Rover 75 Saloon & Tourer Join Date: Mar 2013 Location: Wilmslow Posts: 1,515 Thanks: 433 Thanked 301 Times in 212 Posts	Engine change I've acquired a replacement engine for my KV6. The project car has been SORN for over 3 years with a cooked engine. Project for the summer is to effect the engine transplant - when I eventually re-register the car the V5 will need to be amended, is it just a case of submitting the 'new' engine number or shall I require any sort of proof/additional documentation?

19th February 2023, 21:07	#2
tonybel Avid contributor MG ZT 190 SE Join Date: Apr 2010 Location: Stone Posts: 173 Thanks: 66 Thanked 29 Times in 24 Posts	while im sure someone will come on eventually and tell you the correct procedure, i have never changed an engine number on any car or motorcycle i have swapped engines on, including my KV6 10 years ago. I have never had a problem with an mot,numberplate swap or sale. __________________ Running like a train & leaking like a sieve

20th February 2023, 07:55	#4
Matt_75 Gets stuck in 75 Saloon Join Date: Apr 2022 Location: North Somerset Posts: 548 Thanks: 13 Thanked 20 Times in 8 Posts	DVLA site here lists evidence needed to update engine details on the V5: https://www.gov.uk/change-vehicle-de...idence-to-give __________________ Matt 2001 Rover 75 Connoisseur SE 2.5 (BRG) 1999 Rover 75 Club 2.5 (Dorchester Red) 1973 Triumph Dolomite (Honeysuckle)