Kevin:
I have an SD1 in a Westfield SEiGHT -- a derivative of a Lotus 7. My engine
set up is similar to yours, though I've swapped my dual port and Holley for
an Edelbrock carb and manifold. My distributor, which also has a twin
vacuum unit, has a Crane pickup which, I believe, is similar to your
Lumination module.
I use only vacuum advance, not retard, and time the engine for 34 degrees
maximum advance with vacuum disconnected. Maximum advance on my distributor
comes in about 3000 to 3400 RPM. That arrangement seems to work well,
though I will be dyno tuning the car later this month .
With the Rover's 6" crank pulley, 34 degrees is 1.78" to the right of the
TDC mark.
It may be useful to verify your TDC using a pencil or ??? placed through the
#1 spark plug hole. I've heard that some Rovers have variance in their TDC
pointer.
Hans Mattes
Santa Rosa, CA
----- Original Message -----
From: "Dodd, Kelvin" <doddk@mossmotors.com>
To: <mgb-v8@autox.team.net>
Sent: Wednesday, September 04, 2002 11:53 AM
Subject: Distributor Choices
> Looking for information on distributor setups for the Rover 3.5L
>
> I've got an 80 Federal SD1 which has the original Lucas distributor with
> twin vacuum unit. The distributor is fitted with a Luminition module.
>
> I'm installing a Offenhauser dual port manifold with Holley 390 carb. and
a
> set of headers.
>
> Does anyone have a suggestion for distributor hookup, timing etc. that
works
> reasonably well for street use. Originally the distributor only had
> manifold vacuum hooked to one side of the vacuum unit, the other side had
> been disconnected.
>
> Hook up both vacuum units? If so, where? manifold port or off the
> butterfly?
> Disconnect one or both vacuum units?
>
> I'm on an ultimate low budget, so replacing the distributor at this time
is
> not an option. I'm looking for the best hookup for the original unit
only.
> Later, I'll look into performance modifications.
>
>
>
>
> many thanks
>
> Kelvin Dodd
>
> Rover SD1
> 78 MGB V8 conversion in stalled progress
> 66 MGB GT V8 in very stalled progress
>
> Ojai, CA
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