plugs and leads

[Kitwa]

I went out in my Griffith 4.3 yesterday for the first time this year. Doesn't take long to be reminded what fantastic fun these cars are! I think that goes for pretty much all TVRs.
The car is running well, but the friend who does the servicing with/for me suggested that I fit iridium plugs and Magnecor leads, and clean the stepper motor. I've done the stepper motor before and hope that will be as straightforward as it was last time. What I wondered is what iridium plugs - NGK? - and Magnecor leads are recommended for the 4.3 pre-cat engine, and where's best to get hold of them from.
Any advice and related information gratefully received!

[Belle427]

Lots of opinions on this but if you head over to the chim section there are some recent discussions on it.
Magnecor are considered to be a waste of money.

[phillpot]

Iridium plugs a waste of money in a low use car.

Magnecor a waste of money.

[Kitwa]

Thanks guys. I have emailed mrretroleads mentioned on the Chimera thread. The car's low use, certainly recently, but is there a perfomance benefit to be had with iridium plugs? A bit of research indicates that they require less power to create a strong spark. Ultimately I'd want to go with what is generally considered the best lead/plug combination for the engine, which is unmodified, still running the original 14CUX system.

[phillpot]

Kitwa said:

A bit of research indicates that they require less power to create a strong spark.

Hundreds of TVR's and all manner of other vehicles using that old Rover V8 (including a few thousand Range Rovers) running around quite happily on standard plugs.

The standard ignition system has all the power it needs to create a perfectly adequate spark

[sixor8]

Yes, but Griffs (and Chimaera 500s) often foul the plugs using the original NGK 7s, unless you track-day the car. They don't run hot enough.

My car, and many others have fitted BPR6 plugs and the cars run better for it. Iridium plugs have a longer life but with mileage I do, I also don't think they are worth it.

[Belle427]

Mr Retro may advise to go for NGK BP6ES instead of BPR6ES, the latter are resistive and not really required if the leads already offer some resistance.

[mjlloyd500]

Mat smith who does my services put some new leads and socks ditching the extenders and using the 7 plugs .it runs perfectly and I only do 2000 miles a year but I do live nr Romford where the car gets hot in 5 minutes due to the way I drive and the traffic I encounter at all times of the day

[Kitwa]

Thanks very much guys for all the advice.