[quote=smudger1] There is an interesting
article by a TVR owner about his journey from moving from 14Cux to Emerald (lots of rolling road sessions required) to GEMS (not for the faint hearted). Brian
Brian, that is a massive step backwards IMHO. Doesn't make sense on any level. The GEMs system is not fun
unless you are David Poole who has regretfully disappeared leaving me with that bag.) 
It is not owner friendly as well as now being obsolete..like ALL traditional Plus 8 fueling systems.
For example,
ALL Plus 8s front engine covers, (which are MUCH more than merely front covers as they contain oil pump, distributors. etc) are wear parts that cannot be repaired. There used to be many non-GEMS available on ebay and elsewhere at a reasonable price (10 quid) but those days are over. But GEMS moved to a very different front cover format with an incorporated oil pump..which also wears faster than the front cover.
GEMS conversion I have already walked three owners of GEMS (one a Morgan fella) through converting a GEMS engine back to an old style front cover. However, we have now reached the stage where GEMS vehicles (non-Morgan) are being scrapped and for a short period parts will be available at break-up yard prices rather than 1000 pounds. Please buy one along with a GEMS oil pump. Try Rimmers. In my experience the best investment one can ever make is old car parts when their vehicles reach this temporary stage of availability. I have new oil pumps I bought 20 years ago for 15 pounds I can now sell for 150...
Sadly, many countries have emission testing. Earlier systems cannot (unless you are someone like me) will not produce emission levels that are acceptable.
Earlier systems can temporarily have their emissions adjusted by tuning the carburetor or starving the fuel flow. That will force cars with a lesser availability of their EFI into non-Morgan systems.
I find the stock system eminently fine. Some are VERY flexible. a 4.8 version of the 4.6 block off a L-Jetronic, by merely using the bigger Jaguar AFM
(34% more airflow which is the capacity difference between 3.5 and 4.8) along with Bosch injectors with the same greater fuel flow. I trim the fuelling easily as the Bosch AFMs allow that and fuel flow is adjustable by a knob on a Rising Rate Fuel Pressure Regulator, one popular in the UK (and chromed!!!).
As you see..swapping out an easily-supplied, owner friendly, system for a GEMS doesn't make sense.
Most importantly, I have seen so MANY moggers change their cars to the point where they are no longer a part of the standard Morgan template and they often soon drop out of the community after. In fact, that was the last conversion I had with Button. He was most disappointed in the single injector adaptable Holley EFI conversion. Admittedly Bill loved experimenting. But the logic of switching from a multi-point EFI to a single point EFI escaped me. At the end, he thoroughly agreed and he had bought a 13CUX system from Bill Fink (who I also miss deeply). Button (at almost 90) was planning to install it with some over-the-shoulder advice from yours truly.
To date, the only non-Morgan common Plus 8 systems accepted as much as a stock systems are the Holley 390 and the Weber 500. So many moggers (and not exclusively so) people have tossed the SUs and their Strombergs.
Lorne
