Kevin Jarvis wrote:

Greetings all,

I have been snooping around and find " JDM "  on several parts and
engines for sale on Ebay.  What does JDM stand for ?

Thanks
Kevin

Kevin,
JDM is short for "Japanese domestic market".  These engines and other
items are from autos that were built to be sold in Japan.   The
suppliers usually say that the inspection requirements in Japan are so
stringent that often the engine is changed with only 50k or 60k
miles as the cheapest way to meet the inspection criteria.   Does
anyone know if this statement is valid?  Also, I'd like to hear what
comments anyone may have regarding the Cosmo 13b REW engines as a
starting point for an aircraft conversion.

Aubrey

Kevin,


You certainly got the JDM part correct but engines are not changed after 50K
or 60K miles.  True cars have to go through an annual or biannual inspection
and when they get to be about 10 years old it is a annual inspection in
either case.  After 10 years the car has practically zero value it usually
cheaper to scrap it and get another car than to pay the inspection,
maintenance,  registration tax and fees.  Ie: my own MAZDA wagon (van) is
out of certification now and  will no doubt be heading for a new life (with
the same engine) to New Zealand where it will be converted to a camper van
and run for another 15 years or more.

The suppliers are probably telling you what you want to hear:)

Doug in Japan