I can attest to the firmness of those V-8 spec mounts, the 4-cylinder MGB
mounts feel like jello in comparison. Installing the mounts in a factory
V-8 installation is an exercise in patience and fortitude. One thing that
must be done is the engine has to be joggled to level it on the mounts,
since the studs on the mounts go through slots in the frame brackets. I
always wondered why my engine tilted to one side when I got the V-8, no one
had bothered to level it!
Cheers, PK
> -----Original Message-----
> From: Scott Pontius [SMTP:spontius@worldnet.att.net]
> Sent: Friday, January 15, 1999 8:57 AM
> To: MGB-V8 list
> Subject: Re: MGB-GT V8 engine choice
>
>
> -----Original Message-----
> From: Jim Stuart <jimbb88@erols.com>
> To: Glen R. Wilson <GlenWilson@worldnet.att.net>
> Cc: mgb-v8@autox.team.net <mgb-v8@autox.team.net>
> Date: Thursday, January 14, 1999 4:26 PM
> Subject: Re: MGB-GT V8 engine choice
>
>
> >
> >Glen-
> >
> >According to some tech article I have somewhere, both versions of the FI
> >need modifications to fit under a stock hood. The early version has both
> >the base & upper portion machined total about 1" I believe. An earlier
> >post covered the later version.
>
>
> There are 2 styles of engine mounts available, those that put the engine
> in
> the stock location and those such as supplied by Glenn Towery, usually
> called "A/C position" mounts, because they mount the engine as far back in
> the engine bay as possible to allow space at the front for an A/C
> condenser-about 1-1/4" farther to the rear than stock. These have the
> happy
> side effect of allowing a little more space for intakes, due to the slope
> of
> the hood (bonnet). Using "A/C position" mounts from Glenn and a Federal
> injection plenum from a 1980 Rover SD1 (same as 80-81 TR8), I found that
> the
> underhood insulation would just touch the top of the plenum. I took the
> plenum to a machine shop and had 1/4" milled from the bottom surface which
> should give just enough clearance to let the engine rock around a bit
> without contacting the hood. With the engine in the stock location, the
> plenum would require more extensive milling and probably the removal of
> the
> EGR fitting from the underside of the plenum, as it would then foul the
> valve cover.
>
> >
> >If you are only a little way from clearing, loosen the nuts that hold
> >the rubber motor mounts to the body, get a long bar & the BFH mentioned
> >previously, & hit the steel base of the motor mounts, on the end towards
> >the body. This downward relocation will do 2 things: 1, lower your
> >engine 1-4-1/2", 2, put your mounts under compression. They will live
> >much longer this way, & the engine will not "rock" as much. Reducing the
> >amount the rubber stretches is a good thing.
> >
> >Jim
>
>
> Jim, (& Glenn)
> I think this only works if you are using MGB 4-cyl rubber mounts with a
> V8.
> I installed a set of MGB V8 rubber mounts, and they are FIRM. I tried to
> convince them downward, and they compressed very little if at all. I
> think
> this is probably very good, in that they should control engine movement
> better and last longer.
>
> Scott Pontius
> '78 MGB V8 (just days from being on the road-knock on wood)
> Los Angeles
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