Replacement alternators for an
What are your options
if your alternator on an MGBGTV8 is faulty or needs replacing?
This is a question that is increasingly raised by fellow members.
Peter Beadle, former parts manager with University Motors
in Epsom at the time the model was launched and then in production
and later with Moss, recalls "it was shorter in the body
than the ACR alternator which was then the standard unit used
for the BL range of cars and also originally MG had hoped to
sell the V8 in the USA where AC DELCO was a US product. The
AC Delco was fitted to TR6s supplied to the US market but not
fitted to home market TR6s".
See the full page illustrated article. More
alternative replacement alternators
A frequent question is "if I fit a replacement alternator,
possibly larger both in size and in terms of its generating
output, will I need to source different brackets?" Peter
Beadle says "there are two brackets - the lower bracket
(item 17 and part number 602369 above) is used to stop
the alternator hitting the front of the offside rocker cover
and adjusting bracket (item 18 and part number BHH997
above) is used to adjust the tension on the alternator drive
belt. Most larger replacement alternators will fit under the
bonnet of an MGBGTV8 as clearance is not an issue". Peter
adds "the part number 602369 is the original part
of AC DELCO alternators
Often a fault with an alternator can be repaired by a specialist.
See our note on three
specialists who can service an AC DELCO.
75amp alternator for an MGBGTV8
Colin Goodey decided to go for an uprated 75 amp alternator
which delivers about 10% more power at tickover which in real
terms meant that the cooling fans on my car were spinning at
over 200 rpm higher than with the standard AC Delco (45 amp)
fans. In real terms, on the road, I have noticed that the fans
now cool the engine sufficiently well enough so as cycle rather
than being permanently on. The unit Colin chose is brand new
and looks very similar to the old Lucas 18ACR unit and to my
mind is totally in keeping with the MGBGTV8s engine bay. It
is also a perfect fit without any need for any alteration to
the fixings and has the standard 3 pin euro plug as the AC Delco
unit, so is totally plug and play.