+1 Dan.

Ok, maybe i am too frustrated and just need to blow it off, maybe i got a lemon, who know? But i've tuned YS and.Webra engine on heli before. if you know webra, its one of the infamousliy hard to tune engine on heli. however, if you look closely on my post, i wasnt complaining about tune, i am not up that stage yet. I was merely trying to get the engine to idle without plug heater attached. i wasn't able to do just that before i did my WOT attempt. It did not response to tweaks. Dont you think something is wrong on my engine?

how is that bad manufacturing tolerance... best bet is you go back to OS and have fun...

5 turns out wayyyyy too rich for 24065 carb ;) GUARANTEED

Is that the one on the P5? I noticed when I set my carb to factory settings, 5 turns out on the LSN, it is too rich. Runs just about perfect at 3-3 1/2 turns out.

Yes you have a lemon engine. Not every engine will be perfect, you got a rare lemon engine, please send it to me so I can take it off your hands, I know it must be very annoying for you.

At first I thought this is the case, then I tried leaning it out 1/16 - 1/8 each turn, and as I mentioned before, the engine would not fire up at all if it's not on dead spot on factory which is 5 turn out LSN, with 5 turn out LSN the engine fire up easily but dies the millisecond I removed the glowplug heater...
I went through 3 new plugs thinking it might be the plug, waited an hour to charge up my plug heater too.... Then after I tried WOT up to 302F with plug heater attached (WOT with heater removed also kills the engine), cooled the engine down, heat the engine up, then that's it, problem gone, switched back to the very first plug, worked, so it definitely wasn't the plug..... Now I can start the engine with a single bump with any setting, rich or lean and now I can comfortably start the actual break in process keeping it at 200F with visible smoke trail, idle well normal or upsidedown and very very accepting to tweaks...

Well the actual problem is fixed now and I can see based on what I observed right now that this engine will be better than OS, but I cannot still understand why my engine behaved like it used to be before my crazy WOT attempt?

As for my statement about bad manufacturing tolerances, pardon me Novarossi fans (not directed to you Houston, you were the only one who gave useful response, for that I thank you), but how do you explain the 3001 shim that I purchased wouldn't fit on the head? I tried heating up the shim with cloth iron set on high tried heat gun too but still it wouldn't fit, wasted 3 shims trying it and finally dremelled the last one to fit. How is that not a bad manufacturing tolerance? It was only simple shims... If Novarossi could not make a properly fitting shim, how do I know they don't make wrong tolerance on my engine too? Did I bought a wrong shim size? I don't think so, the part number matches the manual exactly, I bought the whole thing from authorized dealer, sealed with Novarossi seal and the shim was smaller by point of a millimeter....

Don't get me wrong, I do not want to trash Novarossi and I don't think I am trashing it that bad when I blew up my steam on previous posts :p The whole reason for me to buy a Novarossi was what I saw on the track, it sounds, look and perform so much more aggressive than OS definitely, and if I don't like it, I won't be spending my hard earned money on it. But what I experienced was definitely not good.....I heard many horror stories locally about nova engines, yet I still bought it despite the price and the stories, I was thinking if I can tune Webra (had worse hell on this brand but solved it eventually) and OS 4 stroke on heli and plane, I MUST be able to tune Novarossi too...Yes I am a happy camper now after my WOT attempt, but I know it shouldn't be like that...Peace....

Yeah my Lsn is basically flush on my p5 and I'm still breaking it in. Idles really good now

R u sure you didnt purchase the 03001xl shims ;)

The label on the shims says 03001-25, the manual for BTT referred to 03001 / 0.10 mm as optional shim, and this is the shim set the authorized Novarossi gave me when I asked for optional shim set for my BTT when I bought my BTT from them.

Mine is 24065 carb, different... flush means super rich....

All you probably did was loosen the motor up a little with the WOT and that made it easier to idle and run smoother but it only hurt the life because you need to slowly run-in the combustion seal between the piston and sleeve. Novarossi engine have a VERY tight fit when new and can be tough the first couple tanks to get it idiling but I always lean 1/2 turn or more on both needles before first start because factory settings are super rich since they have no idea what fuel, plug, pipe, etc. you are going to use so it is set so it will be rich enough for whatever setup you choose. I have friends who run OS and they are fast and good motors but they buy two motors a year and I buy one Novarossi and it only gets better up to the 7-8 gallon if broke-in right and tuned properly. If you can't get a new Nova to idle or stay running it's too rich 99% of the time so lean it out a hour or two until it holds a decent idle on the box for 3-5 minutes then let it cool refuel and start heat cycle leaning very little as it loosens up follow the break-in bible. Novarossi makes the best motors in the business just ask all the pro champs and sportsman like me who run them! IMO bearings are one of the most important parts of the engine and usually determine the life span of a engine and Novarossi bearings have no equal. Try a 77t odonnell plug if it's real humid might help also. Your not going to much help bashing Nova around here either! Good Luck!

Hi Uwiikz I was an OS fan too b4. and yes we are in same region haha.

but since the drop price in my region makes me want to try novarossi now. after running a few race i found my novarossi its way smoother than OS engine. its easier to control.
now i'm a fan of this engine. and actually i bought some for spare engine.

the only matter is the glowplug is power hunger. its a big problem if i'm practicing a whole day in the track. so i come with 2 heater now ( another battery to charge )

i tried the OS plug but it only damage my button head (great) never ever try to put OS plug to your novarossi engine, it only ruin your button head.

Novarossi or your local dealer?

-25 is for roma

I'm sure novarossi wouldn't make that mistake (wrong size shimm). I think the Local Dealer tricked you for clearance item LOL