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What spark plug ignition leads did the1986 Spider have on it from the factory? I'm in the process of restoring my Spider Engine and engine bay to original as possible. Any pictures or description would be appreciated.
Thanks!
 

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What spark plug ignition leads did the1986 Spider have on it from the factory? I'm in the process of restoring my Spider Engine and engine bay to original as possible. Any pictures or description would be appreciated.
Thanks!
 

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Discussion Starter #3
Thank you.
I'm aware of that item. I just want to be certain that style is what came on the car from the factory. Classic Alfa site says that style is for the S4.
 

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looking at the 83 prospect here
https://www.hemmings.com/stories/2019/03/11/cars-for-serious-drivers-1983-alfa-romeo-spider-and-gtv-6-2-5-brochures
that shows the suppressor caps are an odd mix of rubber and metal (with some red) at 45° angles ( I guess to fit under the air hose)
Are they Bosch? Marelli...don't know I have seen the type before but can't remember....kind of remind me of motorcycle caps!

same caps on this 83 on BAT (don't know if somebody told him his air filter is all loose):
1983 spider leads.jpg


I suppose you'll have to find a prospect on the 86 MY to see if those were still used or whether the Bosch 90° angle metal caps (like on S4) were used already....
 

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@jayhunt , I have an 86 USA Spider (purchased in 89 with 21k miles) with the original leads. They are not the same as the ones pictured in the post above. They are all black with integral resistor, and flat on the top. They are almost identical to Centerlines IW282 set with the exception of the connection at the distributor cap. Mine are smooth, not ribbed. But of course you won't see this when the clamshell is installed. I have spare clamshells if you need one.
 

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Hi Jay,
I found that Beck-Arnley makes a set (#175-6151) that is an exact reproduction of the original equipment on our Series 3 cars and sells for about half the price Centerline is asking for theirs. The set is made with premium 7mm wire (so it fits perfectly in the plastic cam cover holder) and contains the period correct metal RF suppresion plug covers and distributor splash guard cap.
1628809
1628810
1628811
1628812
 

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You
Thank you.
I'm aware of that item. I just want to be certain that style is what came on the car from the factory. Classic Alfa site says that style is for the S4.
You asked what was original, and I referred you to the Centerline leads, which appear to be identical to the OE on my 85. Perhaps Alfa changed the style for your 86. Good luck on your search.
 

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Those Beck Arnley are hard to find nowadays...probably discontinued?
Kingsborne wires Inc. do a set, iirc

Odd though, don't you think, that both the original prospect of the 83 engine (Hemmings) and the 85 spider engine maintenance manual page posted here (OK it is a diagram, but it is too odd a suppressor cap to be wrong, imo) show those odd and rather smart looking 45° angles plugs as in photo above post #4
just sayin' :)

I'd get an 86 prospect then you know for sure. Might well be 86 was the changeover year.
 

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There is more about these wires than style. Each wire has a built-in resistor tuned so that the 4 wires are equal at around 1 k ohm. This is a feature needed by the Bosch ignition module. Anything else will not work right. And with L Jetronic injection, the fuel computer reads the ignition signal to control the injection. Bad wires will give a lot of trouble.

Initially the wires were made by Bosch, but accurate equivalents became available. Today I believe the Bosch originals are NLA, but those sold by Centerline and other Alfa specialists are appropriate reproductions.

Regarding the info on Classic Alfa's catalog, bear in mind that S3 Spiders sold on the European market up to some point in the 80s were still fitted with carbs and a different ignition than the US ones.
 

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orig. Bosch resistor leads have 5 k ohm resistance.

I now know what those 45° plug caps are, they are 63° plugs... 😆

In fact they are 63° Bosch 0 356 351 031 suppression caps (5K.Ohm) which themselves are actually separate to the leads (that is why you see a bit of red)...so the leads have a rubber end cap that fits onto these caps, which themselves have the normal spark plug end on them....
neat really

GTV6 owners might recognise them;)

Bosch 0356351036a.jpg

bosch-zuendkerzenstecker-63-grad-gewinkelt-5k-ohm-alfa-gtv-6~3.jpg
 
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