Coil for 1994 500 Griff

[waggy]

In march 2018 I decided to replace the ignition parts as they were 24 yrs old. I replaced the plugs for NGK. plus Leads 8mm with Ceramic covers, rotor arm, and Lucas Cap. I also replaced the Bosch Coil for the latest Bosch 0-221-122-392.

The car ran ok till Oct 2020 and then it wouldn't start, after a lot of tinkering found the Coil had failed after 3k miles. Eurocarparts said it was out of warranty. I fitted the old Bosch coil from1994 and it started first time.

Are these new coils rubbish are was I unlucky. is there a better coil from another manufacturer that would last another 27 years.

thanks

Alex

[Belle427]

Bosch are normally very good, it’s the Lucas branded caps etc that are junk.
I’m wondering has the new cap/rotor caused the failure but it’s unusual.

[waggy]

When i put the old coil back it runs perfectly, have done about 200miles with new cap and old coil.

Whats another alternative for bosch or lucas coils

[Belle427]

I’d stick with Bosch to be honest, maybe purchased from somewhere else, just make sure it’s the correct one and wired up correctly.
Check all the wiring connections to coil and module are clean and nice and tight.

[phillpot]

waggy said:

What's another alternative for Bosch or Lucas coils

If you put "Bosch 0-221-122-392" into Ebay search it will also bring up Intermotor and Valeo coils. But I think you were just unlucky, Bosch normally as good as any other brand if not better.

[spitfire4v8]

I have all sorts of issues with bosch coils. Pound to a penny if I have a car with a high rev misfire, and the owner has in all innocence fitted a new bosch coil before bringing it in for mapping, then replacing that coil with any other make cures the fault. I usually end up fitting a good used coil from my stock of used parts to finish the mapping.

I don't think replacing parts these days is a good idea, unless you have an obvious fault. Replacing parts just for the sake of it because of their age probably is worse than keeping with the old but working parts you already have.

I'm also not a fan of the ceramic leads!

My advice for owners is to leave well alone unless something is obviously broken.

[MikeE]

spitfire4v8 said:

I have all sorts of issues with bosch coils. Pound to a penny if I have a car with a high rev misfire, and the owner has in all innocence fitted a new bosch coil before bringing it in for mapping, then replacing that coil with any other make cures the fault. I usually end up fitting a good used coil from my stock of used parts to finish the mapping.

I don't think replacing parts these days is a good idea, unless you have an obvious fault. Replacing parts just for the sake of it because of their age probably is worse than keeping with the old but working parts you already have.

I'm also not a fan of the ceramic leads!

My advice for owners is to leave well alone unless something is obviously broken.

Funny you say that as I just had my RV8 rebuilt buy Dom/Powers and he advised me not to replace the coil or ignition amp unless they were clearly defective

[waggy]

Thanks for the info. I noticed the new Bosch coil is made in Brazil. If you google these coils they are inferior to German made ones. They suffer from misfires and early failures. Wish I new that before spending £80 on a new coil.
My leads are the 8mm with white ceramic plug caps, I bought these as the original metal shroud caps were causing a misfire.

I will stick with my original coil as it seems to run ok.

Alex