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post #1 of 11 (permalink) Old 01-07-2016, 06:02 AM Thread Starter
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RML distributor

Can anyone tell me the Alfa Romeo RML 0 231 178 401 MT distributor is suitable to replace the bosch or Marelli distributors.

Thanks!

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'75 Giulia Nuova Super 1300 Blu Olandese
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post #2 of 11 (permalink) Old 01-07-2016, 06:31 AM
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Would have to check the model number, but my GTV runs an RML dizzy and it works very well !

'64 Guilia Spider
'67 GTV
'68 Giulia Super

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post #3 of 11 (permalink) Old 01-07-2016, 06:38 AM Thread Starter
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Found similar one on ebay

Alfa Romeo Spider RML Electronic Distributor New | eBay

I have the exact same one with mag trigger!

[SIGPIC][/SIGPIC]
{Oo==V==oO}

Currently:
'75 Giulia Nuova Super 1300 Blu Olandese
'71 Euro Berlina 2000 (on a restoration process)
'85 GTV6 Nero
'87 Milano Verde
'87 Milano Platinum

{OO==V==OO}
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post #4 of 11 (permalink) Old 01-07-2016, 06:45 AM
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Well, pop it in and try it !!

'64 Guilia Spider
'67 GTV
'68 Giulia Super

Conservatives-we work hard, so you don't have to !
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post #5 of 11 (permalink) Old 01-07-2016, 12:17 PM
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Some of the early RML units were optically triggered and would need a separate box to trigger the ignition coil.
The new units '401 MTs' are magnetically triggered and the trigger as well as the amplification is done inside the distributor with no need for an external box. I should be mention that the coil for the 401MT must have 3-4 ohms across the primary windings. We offer the Bosch brand as well as BERU brand coils, both are compatible with the new distributor.
If you need further assistance or would like to purchase the latest RML Performance ignition system please email us:
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post #6 of 11 (permalink) Old 01-10-2016, 11:30 AM
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What are the Pro and Cons in comparison to the 123 Distributors?

Thanks
Alessandro
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post #7 of 11 (permalink) Old 01-10-2016, 04:30 PM
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The advance curve on the 1-2-3 unit is pre programmed and carried out digitally, the advance curve on the RML Performance distributor, 401MT is done by means of weights and springs and is accomplished by centrifugal force. Both units make spark by means of precise magnetic triggering. The 401MT uses a coil with 3-4ohms across the primary. Not sure about the coil used with the 1-2-3.
Ric
RMLAlfa.com
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post #8 of 11 (permalink) Old 01-10-2016, 05:21 PM
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The 123 will work with coils of at least 1 ohm primary resistance. That includes the Bosch Red Coil.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #9 of 11 (permalink) Old 04-03-2016, 05:59 PM
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I fitted an RML 401MT distributor to my Spider while my 123 is being repaired. I plotted the advance curve and it is the Bosch 0.231.178.006 which was fitted to some Alfas. It is a docile curve with a range of 28 degrees and it reaches max advance at 5000 rpm. It is curve "A" in the 123 distributor.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #10 of 11 (permalink) Old 04-03-2016, 10:29 PM
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@alfaparticle

Do you notice any difference between the two?

Learning, learning..
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post #11 of 11 (permalink) Old 04-04-2016, 06:36 AM
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Quote:
Do you notice any difference between the two?
Lots! I have a high compression motor that makes max power with 34 degrees of advance. When I set the RML for that the motor is a little hard to start and the pickup is slower. I am already thinking about modifying the advance curve.

Ed Prytherch
79 Spider
85 GTV6 3L
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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