On or around Tue, 08 Feb 2005 21:14:23 GMT, Alex <
[email protected]>
enlightened us thusly:
>On Sat, 05 Feb 2005 10:46:16 +1300, EMB <[email protected]> wrote:
>
>>Nige wrote:
>>
>>> Reading this months LRO mag it reckons a MG Maestro dizzy & amp module will fit right in & wont cost a
>>> great deal!!
>>
>>Absolutely. Works well - I've done a couple.
>
>Can you give me any hints and tips. Do you change the complete dizzy,
>or get bits out of it. If it's a str8 swap, how do you know the
>mechanical/vacuum advance settings are correct for a 2.25?
Below are details for a 2.5l LR petrol
Complete thing. The dizzy on the O series engine (the one that sits
half-way along the engine) is, IIRC, a Lucas 45D4. It has an electronic amp
attached to the side like the 35DLM8 V8 one. The only thing I needed to do
to it was to remove the drive dog from the LR one, remove the drive gear
form the sherpa/maestro one (same engine, also found in early rover 820s
before they were 16V and in morris itals I believe). The pins are different
sizes (on the one I had, anyway) - the 45D4 has a small roll-pin. What I
did was to drill the LR drive dog at 90° to the original hole to suit the
smaller pin. If you turn the distributor slowly by hand, you can feel the
point at which the reluctor passes the trigger as a slight resistance (it
doesn't touch, but there's a magnetic effect), this lets you mark a position
for a firing point roughly. Of course, before you pulled the original off
the lr You set it to firing point on no.1, didn't you... Anyway, that point
you just marked on the dizzy... you line up the replacement dizzy shaft with
the slot in the bottom of the hole, then rotate the body of the dizzy so the
rotor points to a segment in the cap. Fit it, that point is your #1 plug
lead. fit the plug leads in the appropriate order, then fire 'er up (which
will happen if you got it right) and time dynamically with a strobe.
Personally, I left the advance mechanisms alone, seemed to work OK and fired
more readily from cold.
--
Austin Shackles.
www.ddol-las.fsnet.co.uk my opinions are just that
"Any man's death diminishes me, because I am involved in Mankind; and
therefore never send to know for whom the bell tolls, it tolls for thee"
John Donne (1571? - 1631) Devotions, XVII