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Discussion Starter #1
Hello all-

Im beginning to do research on upgrading my Marelli distributor set up on my 73 GTV and convert it to electronic ignition.

Any recommendations on what set up to go with. Ive heard that you can use a BOSCH Distributor but dont know which one and I also dont want to break the bank! :)

Any possible used distributor setup that is suitable for what im trying to do that are willing to give up?

Any input is appreciated

Thanks!

John
 

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Pertronix make a contactless conversion for the Marelli...
I second that, exept I swapped my Marelli for bosh & fitted a pertronix module
Great upgrade
You can also buy a brand new plug & play pertronix distributor with electronic ignition from ebay for under US $ 200.00

Jorge
 

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Hall effect

I fitted a Bosch Hall effect electronic ignition to my 2 ltr bought from high wood alfa in the UK. The engine went from sluggish poor start , to quick starting enthusiastic. I could leave the engine for a year and it would start after a few cranks every time. It would actually run on one cylinder - i.e. 3 leads disconnected.

I don't think this unit is available now but it was similar to this

Alfa Romeo Spider 2000 Electronic Ignition Kit & Coil | eBay
 

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Any feedback with the petronix setup? I included a link that shows one for sale.. url=http://www.jcwhitney.com/ignitor-ii-electronic-ignition-conversion-kits/p2010758.jcwx?filterid=d2700y1973g2j1]Pertronix Ignitor II Electronic Ignition Conversion Kits - JCWhitney[/url]
The ad says "Ignitor II Electronic Ignition Conversion Kit for 1957-1974 GM 8-cyl. with Delco Distributor" (I realize it also says "1973 Alfa Romeo GT Veloce Base".) Since J C Whitney isn't exactly an Alfa specialist, I'd be concerned they would send a Pertronix for a GM V8.

Some web searching confirms that Pertronix #91181 is indeed for a mid-60's - 70's GM V8.

Don't get me wrong - the Pertronix is a wonderful solution to the problem you're trying to solve. I've got a Pertronix in a Bosch distributor in my Sprint GT. I'm just skeptical that J C Whitney knows anything about what model Pertronix fits what model Alfa.
 

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I second that, exept I swapped my Marelli for bosh & fitted a pertronix module
Great upgrade
You can also buy a brand new plug & play pertronix distributor with electronic ignition from ebay for under US $ 200.00

Jorge
You may also need to upgrade your coil

Jorge
 

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Aquino:

No, I'm not so sure that is "it". 1973 Alfa distributors don't have vacuum advance mechanisms, like that ebay part does, so I don't think it's any more correct than the Pertronix for Chevy V8's.

Unless you really know what you're doing, buying Alfa parts from non-Alfa suppliers, such as J C Whitney and ebay, is asking for trouble. They have no idea what fits an Alfa.

My advice would be to buy from Centerline, IAP, Spruell, Alfa Parts, or some other Alfa-specific supplier. For example, Centerline sells a Bosch-style distributor with electronic "guts" for $296 (yes, $50 more than the ebay thing). It's their part #ID405. Or look at the RML distributor available from IAP for $299. Their p/n 12536.

I'm not saying that the Centerline or IAP distributors are your only option. I'm just saying that when you buy from an Alfa-specific supplier, you can be confident that the fit, as well as the advance curve, will be appropriate for your application. And if you have a question or a problem, you can be assured that the person you speak with won't say "Alfer Romero? Who makes that?"
 

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I can vouch for the Pertronix unit's effectiveness. It's good to know it's now available for Marelli. I have a Bosch and got one over 7 years ago. I have not touched the distributor since. The only thing that now affects my running and starting from an ignition stand point is when the cap/rotor wears out, which takes even longer now.

Of course make sure your distributor is still in good shape and if so, I'd get it. The Pertronix website should give the correct part number, and with that you can get it from anywhere. I second Jay's warning not to use JC Whitney's suggestion of which one to get, but if you can confirm the part number with Pertronix, it should be fine.

Just did a quick search on Pertronix and it seems only the Ignitor I is available for Marelli. So the Ignitor II on JC Whitney could very well be in error.
 

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Discussion Starter #12
Quality Products for Over 40 Years
File Format: PDF/Adobe Acrobat
MR-LS2. 9MR-LS2. 1969-72 4 Berlina. 13, 79. Marelli. MR-LS1. 9MR-LS1. 1969- 73 4 Gt Veloce. 13, 79. S166B. Marelli. MR-LS1. 9MR-LS1. 1969-79 4 Spider ...
www.pertronix.com/catalogs/pdf/ptx/2012/Pertronix2012.pdf
1

Ok MR-LS2 is the model which I confirmed from the Pertronix website. Good feedback and thank you all for your inputs!!
 

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Excellent find. I'm going to save this pdf. I was only using the quick search on their website by distributor make and model. It does appear that the Ignitor II is available, but the footnote says you cannot use solid core wires with the Ignitor II. I recognize the part number now for the Bosch one I got (1847V). Interestingly the footnote also says it is a vacuum advance distributor. Mine is not, but it fits fine and has been working for years. That same footnote applies for all the Alfa distributors. I think maybe not to worry about that. The important thing is that it fits the distributor. It shouldn't care about the advance.
 

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Discussion Starter #14
Ok I just ordered the MR-LS2 ignitor as my distributor is in fact a S103B Marelli. Ill let you know my findings once it is installed.
 

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You will love it - especially if you are running with a SPICA FI. The quicker you can get off the starter the less chance you will have flooding the engine (CSS is activated when the starter is engaged).

FWIW, I also like the 123 distributor if you're going to replace the whole unit. No mechanical weights and the new version is user programable via USB connection to your computer.

Either way, I would never go back to points and condenser. When it comes to electronics there is nothing romantic about old, unreliable technology...
 

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Discussion Starter #16
I do have the Spica set up so I hope so! I was checking out the 123 distributor as well but for my purposes of just a single upgrade to eliminating points, I think the Pertronix set up is a good simple upgrade...
 

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I can highly recommend the 123 distributor. I started a thread on it a few years ago.
 

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I've more than pleased with the RML and the MSD6AL. Pulls good from low. Starts before you turn the key, set it and forget it.
 

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So, lets revive an old thread. Question: How does one know when the oem distributor on my 72GTV2000 is really shot? What should I look for, for wear? I have 90K on the odometer. If I'm going a complete rebuild I might as well get a new distrib, eh?
 

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Maybe. Put a light on it and rev to around 3000 and observe if the light jumps around. It should stay at the same place on the pulley if the lobes and bushings are good. Look how the light advances up the pulley as you rev it. If it's smooth and repeatable the weights are working well. Granted it's not as good as putting it on a machine but it's not bad for general condition. I just put a pertronix ignitor on my s104ba and it looks great under the light. Actually better than the RML I've been running for 4 or so years.
 
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