Luca Rita and choice of plugs

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850cmndo

850cmndo

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I'm presently running a Rita on a '73 850 and use Champion N7YC. I can't say that I'm having any problems but have been using them so long I now wonder maybe I'm missing something. I'm sure there are plenty of you with the same setup running different plugs. Just wondering what plug and why? Thanks.
 
I would expect you'll get hundreds of answers on this one, much the same as oil spec.

For the past years I've used NGK 6 a similar heat range to Champion 8. The slightly hotter range shows no signs of heat stress and cleans off all the crap left by some modern fuel.

But why fix it if it aint broke ?


Cash
 
I'm running a Boyer and have had the best luck with Champions. NGKs don't seem to last as long for some reason.

Greg
 
I have a Lucas RITA on my '72 750 combat. Use either Champion N7YC or NGK BP7ES...no problems with either. By the way these are the factory recommended plug heat range.
 
illf8ed said:
I have a Lucas RITA on my '72 750 combat. Use either Champion N7YC or NGK BP7ES...no problems with either. By the way these are the factory recommended plug heat range.
Click to expand...

That NGK has come up in conversation. The heat range is the sort of info I've looked for. My thanks.
 
cash said:
I would expect you'll get hundreds of answers on this one, much the same as oil spec.

For the past years I've used NGK 6 a similar heat range to Champion 8. The slightly hotter range shows no signs of heat stress and cleans off all the crap left by some modern fuel.

But why fix it if it aint broke ?


Cash
Click to expand...

+1 on the NGK 6 choice. I was running the BP7ES but suffered fouling problems, sputtering on take-offs and stalling at red lights. Switched to the BP6ES and just like Cash said, it stays clean and the bike idles perfectly.
 
My late 72' with Lucas RITA and 32mm non-Combat head runs Champion RN7YC - with stock coils and non-resistor wires...and good results.
 
northern750 said:
My late 72' with Lucas RITA and 32mm non-Combat head runs Champion RN7YC - with stock coils and non-resistor wires...and good results.
Click to expand...

The "R" in RN7YC is for resistor type plug. Typical Brit ignitions aren't all that strong, so non resistor type spark better - N7YC. By the way the factory during the time of production recommended Champion N7Y...the "C" came later for Champion and refers to "copper core" electrode which NGK already had in the 70s.
 
illf8ed said:
[The "R" in RN7YC is for resistor type plug. Typical Brit ignitions aren't all that strong, so non resistor type spark better - N7YC. By the way the factory during the time of production recommended Champion N7Y...the "C" came later for Champion and refers to "copper core" electrode which NGK already had in the 70s.
Click to expand...

I just kept on using the same type of plug my bike came with when I bought it last year. I may try some non resistor plugs to see if there is any difference but I have no problems with using the R plugs now, nice bright spark with the RITA ignition...wasn't there a thread on this a while back?
 
northern750 said:
I just kept on using the same type of plug my bike came with when I bought it last year. I may try some non resistor plugs to see if there is any difference but I have no problems with using the R plugs now, nice bright spark with the RITA ignition...wasn't there a thread on this a while back?
Click to expand...



As you have found, using resistor "R" plugs (or resistor caps) doesn't cause any problems with a Rita ignition.
 
L.A.B. said:
As you have found, using resistor "R" plugs (or resistor caps) doesn't cause any problems with a Rita ignition.
Click to expand...
]

LAB is quite right, Boyers don't have problems either providing it's one or the other, ie don't double up on the resistance.

Cash
 
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