My rapid reply is because we are on spring break, and I would rather
do this than grade papers just now...
(1) Regarding throttle return springs. I have always found SU's on
MG's to have both a linear and concentric throttle return spring.
This is true for my TD, A and B (when HIF-equipped). The B came with
three linear springs, two attached to the accelerator cable and one
for the choke. It is my belief that even the concentric springs
produce a lateral force on the throttle shafts, resulting in the
all-too-common shaft and bushing wear. Somehow, surprisingly, SU
seemed to have figured this problem out by the time the HIF came
along. Mine (with some 85,000 miles) had negligible shaft/bushing
wear.
(2) Regarding manifolds. HIF-equipped cars have thinner ears on the
manifolds. This is usually not a problem, since one can shim the big
heavy washers with 1/8" stock for the manifold with thinner ears. You
might need longer studs in your head (if it is of the HIF vintage) but
they are certainly cheaper than a new manifold. Face it, you should
probably get new studs _anyway_. And Vicky Brit sells brass nuts for
same for 35 cents.
A. B. "Have I installed a head recently?" Bonds
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