[Mgs] MGC rear axle

[Eric Markley]

Paul has a good point. A stock B with a 3.07 axle ratio would likely not
have enough torque to pull redline in 4th gear, hence my suggestion of a
supercharger. The benefits would be reduced rpm on the highway (approx. 3800
to 3000 at 70 mph)and perhaps some improvement in engine wear and fuel
economy. One would reduce acceleration and top speed potential.

The overdrive gives nearly the same reduction in rpm at 70 mph, about 3100
to 3150, and preserves the acceleration of the stock differential ratio. As
the B isn't exactly a pavement shredder, I suggest that this would be the
preferred solution.

Like with many other things in life, what is the intended purpose for the
tool in question? Sometimes you need a tack hammer and other times a sledge
hammer. Each has their place.

Eric in Florida

-----Original Message-----
From: mgs-bounces+ericemarkley=bellsouth.net at autox.team.net
[mailto:mgs-bounces+ericemarkley=bellsouth.net at autox.team.net]On Behalf
Of Paul Hunt
Sent: Thursday, November 15, 2007 4:23 AM
To: RampantNM at aol.com; mgs at autox.team.net
Subject: Re: [Mgs] MGC rear axle


Wouldn't that achieve the inverse of the Holy Grail and lose out on both
acceleration *and* top speed?  The ratio in 4th is 3.909:1, OD 4th 3.2:1.
Top speed is 105mph, which means 5,800 rpm in 4th or 4,773 in OD 4th.  So
the engine is already at or past its maximum gearing (mine seems to pull a
high top speed in OD 4th than 4th, but maybe that is just because I cringe
at the mechanical noises anywhere near the yellow line).

PaulH.

----- Original Message -----
> Any thoughts on fitting the 3.07 in lieu of a five speed or overdrive in a
> 4
> cylinder B?
_______________________________________________
ericemarkley at bellsouth.net

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