[Mgs] OD Query

[Dodd, Kelvin]

Bill:

The tunnel did get the heck modified out of it, but so did the diff.
area when they went to the Salisbury rear axle assembly. Both got a bit
of overkill, because it is always a good idea to leave more clearance
than you may find to be necessary. Changing shell tooling is expensive!

The tunnel was also modified to accept the automatic transmission, which
is a bit wider than the 4 synch. trans. I don't think the V8 had
anything to do with the tunnel mods, as although Rover had them in '68,
there was no connection between the companies till the Leyland merger.

Typically a wide range of power trains were considered when designing
the chassis. I think I read somewhere that the B was initially designed
to accept a V4 power plant. Shades of SAAB Sonnet II. The heavier 4
synch. trans. and Salisbury diff. did come out about the same time as
the MGC was in development, so chances are that program got us a lot
more heavy duty bits than we give credit to. Certainly both assemblies
took the MGB from being a nice but slightly fragile car to being bullet
proof.

The V8 install used the regular MGB/C 4 synch. trans, so no further mods
were necessary, till us spurious yahoos got in there with our Rover LT77
5 speeds.

Kelvin.





________________________________

	From: WSpohn4 at aol.com [mailto:WSpohn4 at aol.com]
	Sent: Wednesday, January 30, 2008 2:26 PM
	To: Dodd, Kelvin; frankk at intap.net; mgs at autox.team.net
	Subject: Re: [Mgs] OD Query



	Quite right, Kelvin - pay attention to what I meant, not what I
said (hard to think with screaming clients and phones ringing off the
hook)!

	The other (easier) way to deal with sticking a later trans meant
for a 5 main onto a 3 main engine is just to pop the input shaft out and
get it turned down. Done that a few times for the MGA race car when
running the pushrod motors.

	As for tunnel interference, I was taking the word of the MGB
guys who always swear that the tunnel was modified on the late cars to
clear that trans. Apparently not! I guess any mods were done to
standardise for the V8 installation and didn't involve the tunnel?

	Bill