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Old 4 Days Ago   #16
Patinated Peter
 
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Re: 0verheating coil

Quote Originally Posted by Vitesse View Post
This thread explains a lot of what youíre looking for. https://www.fiatforum.com/500-classi...0=#post4183980

Both myself and Peter have been running Bosch Blues for a while. Well I donít anymore as I donít have a distributor on my 650 engine and it now has a dry twin coil. But when I had the 500 lump in the car the coil was fine. Itís what 123 recommend to use with their electronic ignition.
I can confirm that after at least 3 years regular usage the Bosch coil is still sparking well. Me and it tend to keep our distance and I suspect that Mr Bosch is not keen on me touching him as I have been given no indication that he has the hots for me.
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Old 3 Days Ago   #17
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Re: 0verheating coil

New Bosch coil arrived and reading taken when unit at room temp 20c is . . .

2.8ohm

So, sending that back. Will get on the blower to a supplier and ask them to take a meter reading before sending out to me. Doh !

I have heard that as Bosch coils are made worldwide, mine came from Brazil, the quality is variable.

Oh well, onwards and upwards . .

Rob
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Old 2 Days Ago   #18
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Re: 0verheating coil

Like Peter, I have been using a Bosch 'Blue' coil for the last 3 years,along with an 'AccuSpark' ignition---never had a moments trouble with the coil.
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Old 2 Days Ago   #19
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Re: 0verheating coil

I recommend this company for the blue coil HT leads, spark-plugs and anything relating the ignition system; they really know their stuff.
https://simonbbc.com/bosch-blue-igni...il-0221119027/
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Old 2 Days Ago   #20
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Re: 0verheating coil

Quote Originally Posted by fiat500 View Post
I recommend this company for the blue coil HT leads, spark-plugs and anything relating the ignition system; they really know their stuff.
https://simonbbc.com/bosch-blue-igni...il-0221119027/
I was going to comment that they only appear to sell the dodgy Brazilian ones I decided to look on mine first before I make a fool of myself and it is Brazilian

Just went and got it in from the garage and it measures 2.97Ω when cold, it was a bit chilly in the garage, stuck it on the radiator for 20 minutes to warm it up and it only rose slightly to 3.04Ω. I would imagine that, that figure would rise to somewhere nearer to 3.2Ω in a nice hot engine bay and after producing a few hundred thousand sparks. Thatís measured on a meter that I have recalibrated once a year so itís really accurate.
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Old 2 Days Ago   #21
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Re: 0verheating coil

Quote Originally Posted by Vitesse View Post
I was going to comment that they only appear to sell the dodgy Brazilian ones I decided to look on mine first before I make a fool of myself and it is Brazilian

Just went and got it in from the garage and it measures 2.97Ω when cold, it was a bit chilly in the garage, stuck it on the radiator for 20 minutes to warm it up and it only rose slightly to 3.04Ω. I would imagine that, that figure would rise to somewhere nearer to 3.2Ω in a nice hot engine bay and after producing a few hundred thousand sparks. Thatís measured on a meter that I have recalibrated once a year so itís really accurate.
Very wise to check your facts first... not something I usually do. This is where my original decision was made ..

http://www.ratwell.com/technical/BlueCoil.html.....

It's quite informative. The proof of the pudding etc. Mine is no longer blue as the label came off and it got some black overspray but that doesn't affect its performance.But my ultimate customer review of the company I bought it from and the coil itself is that despite a short period of overheating when my voltage-control went faulty and doing me proud for, I guess, at least 20,000 miles, I haven't got the slightest misgivings that it it won't go on forever. PS. I've never checked the internal resistance or measured it's temperature.
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Old 2 Days Ago   #22
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Re: 0verheating coil

Did it have “Prince of Darkness” under the label?

I think I have seen that page before, no doubt spoken about it before in the dim and distant past? ��

I was confused, it looks like those dodgy Mexican’s you need to be wary of , not the poor Brazilian’s. Which I suppose makes sense as they continued to make the Beetle for years and it uses the same coil, so there was probably not a shortage of demand.
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Old 2 Days Ago   #23
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Re: 0verheating coil

Quote Originally Posted by fiat500 View Post
I recommend this company for the blue coil HT leads, spark-plugs and anything relating the ignition system; they really know their stuff.
https://simonbbc.com/bosch-blue-igni...il-0221119027/
I spoke with these guys yesterday. It's where I got the Viper coil from. Their website states the blue coil as 3.4ohm. However when I spoke to the chap, he said no, they are 3ohm. He went and measured some and confirmed all showing as 3ohm.

So I've ordered a Beru 172 which a lot of the VW classic guys use. Rated at 3.3 on the primary. Due tomorrow. Shall see what the meter shows.

If not, I'll get another Bosch blue and irrespective of the reading, will plumb it in and see how it performs.

What a faff I'm having. But will get it sorted
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