I recommend, no BEG you to procure Peter Burgess' "How to Power tune MGB
4cyls" from Moss or other vendor. You'll learn the what, and more
importantly, the WHY, of cam replacement and other performance mods. Going
down this road without more education than the brief snips that "the list"
can provide you with will find you wasting lots of your time and money.
(and the Fun Police must add here that being a late, cat.equiped car, you'd
better check your state regs. before playing with it)
RE the lubricants: our B motors have relatively "loose" clearances, ( to say
nothing of gasket systems...) Synthetics will not lubricate properly because
of this, being too "thin". This is why Syntec and other synthetic type
products are "dis-recommended"
Further, changing with an already built and broken in motor would be likely
unseat to your rings. "Proceed with Caution"
As for "One shot treatments", they are just that. ONE SHOT at your WALLET.
For example, Slick50 now is living under a federal court injunction for false
advertising. Other additives that claim to inject moly or graphite into your
system have a logic problem: if the particles are big enough to do any good,
your oil filter is going to catch them. If they're small enough to escape the
oil filter, they won't be effective. GOOD old fashioned high grade oil (eg
20-50 Castrol) a QUALITY oil filter (NOT from FRAM,GRAND, OR SPAM!) (get
one from a "specialist") and frequent changes are still the best protection
there is.
If your motor is tired, your motor is tired. There is NO magic formula in a
bottle that will take care of this problem!
original message
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Subject: Rebuilding engine on '78MGB
I am considering putting a "mild" cam in my engine. Can anyone tell me
why I should/shouldn't. I would like the extra horsepower but I don't
want to spend the summer adjusting the tuneup.
Also I don't want to have to do this rebuild again. I have been told not
to use Syntec. What do you think about these one time oil additives.
Doug McLaren
78 MGB
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