I've always shied away from highway driving in my TD. The engine just doesn't
sound too happy at 4000rpm. I've finely decided to take the plunge and change
the rear end ratio. My mechanic has an MGA parts car, and is ready to sell me
any parts I need from the rear end. Are the ring and pinion gears the only
two parts I'll need from the MGA?
Also, what is the recommended ratio for highway driving? Here are the options
I've found:
Standard TD 5.125 3900rpm @ 55mph (What I have now)
TD option 4.875 3700rpm @ 55mph
TD option 4.555 3470rpm @ 55mph (Gears available from Moss)
MGA 4.3 3300rpm @ 55mph
MGA 4.1 3120rpm @ 55mph
My mechanic claims the MGA parts car has a ratio of 4.5, but I only see 4.3
and 4.1 in the literature. Is he mistaken?
Bob Donahue (Still stuck in the '50s)
EMAIL - BOBMGT@AOL.COM
52 MGTD - under DIY restoration NEMGTR #11470
71 MGB - AMGBA #96-12029, NAMGBR #7-3336
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