My mistake.. I thought it was a rebadged Go.

The Nova .28 was new and one of the worst engine experiences I have had. Tried plug changes, new fuel lines, changed the clutch, bought new pipes, etc.. Never tuned. Sold it to a guy who ran different fuel without touching a needle, and it ran fine. So FOR ME anyway and the fuel I had no choice but to run, the engine was fxxxing useless and caused a ton of stress. The Orion was pretty much the same. Also new.

Whatever the case, an engine being Italian does not automatically endow it with superior quality. There are plenty of burned Toro Nero owners around to atest to that...(not to mention Fix It Again Tony Fiat drivers ha ha...) Among others.. The reverse is true for Taiwanese engines.

You can also waste a lot of time spinning tires...

Not with a correct clutch setup
Have you ever tried e.g. a stock Plus4 or similar engine? Then you'll know what I'm talking about.

Are NR C5TF plugs good for the F11?

No!! That is a cold body plug and mainly for onroad. C5TGC or C6TGC is what you want. If you try running that C5TGF plug your gona have flame outs and you will be chasing the tune all day. The last letter is what determines a hot or cold body plug. I know the first time I bought Nova plugs I assumed the C meant cold

C: caldo
F: frio

To me it sounds like the plug is bad honestly. Have you tried another plug maybe different brand or different temp? Or even just another new one of what you already have? That pipe and header combo is what I always ran on my WS7 engines. The front bearing should not really leak any fuel unless your running really rich still. If you run only one or two tanks and notice it's already getting your engine block wet you are either too rich or the bearing needs replaced. NVR17011 and 01151-72 are the same bearing.. They work great and are worth the extra money IMO!!

Thanks.. A German NR distributor (SMI/Orcan) told me that a "5 or 6 TGH" is what I want.. Ha ha, ok - C = H for hot..

There's a dude on a German forum selling four C5TF's (i.e. C5TC I guess...) for ten bucks. That's why I asked..

I also see in my online searches that Fusion and Losi sell the C5TGC under their names..

Couple German guys are arguing and saying just take a P3.. I believe you guys of course, but there do seem to be some knowledgeable guys out there casting doubt on the idea that there is such a big difference between OS and other plug shapes/conus forms... Not sure how wary to be of OS plugs.. And one guy did make the quite valid point that if you run OS plugs, it's always easier - A LOT easier judging by my search for these Nova plugs - to find a P3 in a pinch....

I appreciate all the info though, and will keep trying to track down some NR plugs (2x C5TGC and 1x C6TGC I guess...)

Lmk what you need , I will ship you the plugs no prob

On this side of the pond running a P3 in a engine like that would be considered a rookie mistake.....Not that the P3 is a bad plug, but for that particular engine ( F11 ) the P3 is quite the mismatch.........The P3 is ridiculously hot with a very thin fragile element coil...It was designed to run in engines with lower compression and cooler combustion, ....The F11 however is basically a onroad engine, it has high compression, high squish velocity and a much hotter more focused combustion...Because of this the F11 doesn't need such a hot glowplug ... running such a hot glowplug in the F11 is going to advance the ignition quite far which will likely result in detonation and broken glowplug coils once you start running the engine hard...... The only reasons I could possibly see to run a P3 in a engine like the F11 is if a person did not know how to tune and were running the engine extremely rich...or if they were running at very high altitudes, or running some fuel that had very poor combustion qualities and needed the hotter plug to compensate, If fuel is bad a ultra hot glowplug would help stabilize the idle...Another reason for a P3 is if you were running lower nitro content................But on this side of the pond running a quality 30% running a P3 would be just asking for trouble IMHO...You probably couldn't mismatch a engine and plug much worse then that....Results would be short glowplug life, poor fuel mileage and very good chances of coil element breaking free inside the engine and causing damage, or at least if the engine was tuned to full potential......

I don't think Daniel Reckward and RMV Germany would recommend the P3 for RB engines (on Tornado fuel) it it were a "rookie mistake"... There are a lot of other very experienced racers here, sponsored included, who often swear by the P3 - in all kinds of engines, Novarossi included... I'm the one who gets criticized and barked at for saying "in US forums they say don't run OS bla bla...." Everybody here runs P3's. I don't buy that they're only for rookies who don't know how to tune.

Which is not to say some other plug might not be marginally better. But again, RMV Germany would not be officially recommending P3's for RB engines with Tornado fuel without knowing what they're talking about.

And furthermore, I have to live with what is available to me - and for fuel that means Tornado, and for plugs, well OS are far, FAR easier to come by than Werks or Picco or these weird hot NR plugs for ex... But I'll keep looking for them..

Most likely then it is the Tornado fuel that requires an extremely hot glowplug to fire correctly......As a P3 is far too hot for that engine under any normal circumstances, end of story bro !

Honesty Neal, don't waste the time. It gets frustrating when people
ask and then you get ridiculed for the advice you offer them. It's just
not worth taking the time or the effort to reply to some anymore.

All I know is that in my experiences with toy car engines a difference in something very very small (maybe not even visible to the naked eye) can make a big difference. And there is the pic again and the difference is something I can see.

Maybe ask the guys out there how long their OS plugs last in the RB's? Everyone I know that runs OS plugs usually needs a new one every race day or every 2nd race day if they are lucky. My Nova and RB plugs always last between 6-8 race weekends. Plus if you happen to run a little lean the OS plug will probably be done, the RB and Nova plugs can take it most of the time.

Look at thr thread pitch and the length of the taper in the seal area

Taper not as long on os and it deforms the combustion bowl

Nova plugs in nova made engines

C5tgc or c6tgc

Chris has already convinced me to get the NR (hot) plugs. So I've been looking for them..

I was only pointing out that there are lots of experienced people about who cast doubt on OS plugs in NR engines being such a big deal... Dude just chimed in on this German forum telling me how great his X10 runs with P3's and P4's....