I am looking to get the engine of my 79 MGB rebuilt. What
are standard items to be replaced and work to be done? What is the standard
cost of labor? Any advice on this would be helpful.
Thanks,
Robert
79MGB
I have rebuilt 3 MGB engines over the past 5 years, all in various states of
tune from stock
to stage 2. The definition of "rebuild" tends to vary from person to person,
so I will give my own
particular version.
Engine totally disassembled including all core plugs, oil gallery plugs etc
Block hot tanked, cleaned and checked for any defects (cracks, twisted....)
crank checked for defects and straightness. If necessary bearing surfaces
reground to appropriate size (10,20 under)
Rods cleaned and checked for straigtness and defects. At this point I always
have the
rods checked for equal weight (within 1 gramm).
New pistons, new camshaft, new timing chain and sprockets, new oil pump.
Block rebored and aligned bored to make sure the centerline of the crank
is at exactly 90deg to bores.
I have been using the Piper BP285 camshaft and have been very pleased
with its characteristics.
Flywheel checked for defects and clutch mating surface reskimmed.
Assembly includes new camshaft bearings installed, new rod/main bearings.
New core plugs and oil gallery plugs treaded ( I use theared allen head type
plugs)
All rotating components balanced.
Head totally disassembled (including valve guides); cleaned checked and
mating
surface slightly skimmed. New seats, new valve guides installed, old valves
used
if they are okay. Rocker shaft replaced ( I have been using the turfridged
ones) and
new valve springs.
Cost for parts is usually about $1000, machine work turns out to be $1000
and
then labour to assembled engine (takes me about 3 days to assemble/check and
double check everything.
I am sure I have left out a couple of steps - but you get the general drift.
gerry
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