Originally Posted by houston (Post 11105931)

i've built about 5 or 6 of them , excellent engine

i actually still have one or two plus 21-8T , thats more than likely nearly identical to this p8

its much dfrnt than the p5xlt , different case , different crank those two things make a HUGE difference:D

nice running engine , i'd say 9853ss/41021

Originally Posted by Uwiikz (Post 11107584)

Hi folks,
this probably been asked before, but I've tried search and I couldn't find the right answer. I live on sea level with 60-80% humidity, temp anywhere between 80 to 100.

I just bought a novarossi btt with 2012 carb. Came from OS background I have no idea how to tune this engine. I followed break in bible and purchased comp heat blanket. Pre heat engine for 20 mins, set everything on factory tune 5 out LSN and 3.5 out HSN. Problem is, I could not keep the engine idle without the glowplug staying attached, as soon as I undo the glowplug heater, the engine would always die. the engine is easy to start but flame out very easily too...Tried running it with the glowplug heater attached and I could see smoke trail, not much tho. Running stockplug that came with the engine, couldn't remember the exact number but it's got 6 on it.

Any advices ??

Thanks in advance.

Originally Posted by beidle99 (Post 11107607)

The 3.5 out from closed on the LSN is to lean for break in. Also, get your self an OD 97T plug fro break in and only use it for the first gallon. You don't want to break in with a $11 glow plug. after the first gallon put your #6 Nova plug back in. Also open your idle gap a little since your LSN is so rich for break in. Make sure your 190 to 210 for the entire tank of fuel during break in and the same for start up. 20 minutes should be enough for the Comp heater to get it up to temp but double check before you start it. Take the break in nice and easy and get at least a gallon before you start to try to race tune. My plus 4 took 2 gallons to break in fully. Once its broke in and the tune is close you will have a great smooth, reliable motor.
On a side note, always use you comp heater before start up, it will extend the life of your motor.

Originally Posted by Uwiikz (Post 11107584)

Hi folks,
this probably been asked before, but I've tried search and I couldn't find the right answer. I live on sea level with 60-80% humidity, temp anywhere between 80 to 100.

I just bought a novarossi btt with 2012 carb. Came from OS background I have no idea how to tune this engine. I followed break in bible and purchased comp heat blanket. Pre heat engine for 20 mins, set everything on factory tune 5 out LSN and 3.5 out HSN. Problem is, I could not keep the engine idle without the glowplug staying attached, as soon as I undo the glowplug heater, the engine would always die. the engine is easy to start but flame out very easily too...Tried running it with the glowplug heater attached and I could see smoke trail, not much tho. Running stockplug that came with the engine, couldn't remember the exact number but it's got 6 on it.

BTW I added 0.1 shim on head to match my climate.
Any advices ??

Thanks in advance.

Originally Posted by Uwiikz (Post 11107584)

Hi folks,
this probably been asked before, but I've tried search and I couldn't find the right answer. I live on sea level with 60-80% humidity, temp anywhere between 80 to 100.

I just bought a novarossi btt with 2012 carb. Came from OS background I have no idea how to tune this engine. I followed break in bible and purchased comp heat blanket. Pre heat engine for 20 mins, set everything on factory tune 5 out LSN and 3.5 out HSN. Problem is, I could not keep the engine idle without the glowplug staying attached, as soon as I undo the glowplug heater, the engine would always die. the engine is easy to start but flame out very easily too...Tried running it with the glowplug heater attached and I could see smoke trail, not much tho. Running stockplug that came with the engine, couldn't remember the exact number but it's got 6 on it.

BTW I added 0.1 shim on head to match my climate.

Any advices ??

Thanks in advance.

Originally Posted by yollie (Post 11107805)

hi.. all novarossi loverss..:cool::cool:

i have some questions from you guys since i'm new to RC and a little confuse about tuning breaking in and many more :smile::smile:.

so these are my questions :

1. Choosing the right glow plug. I'm from tropical wheather its about 30 - 37 Celcius. and i see from the novarossi that i should use c7tgc for my engine but some says i should use c5tgc i'm a bit confuse. so i finally decide to use c6tgc wich in the mid. but i'm curious if i go to c5 or c7 how that will effect the performence of my motor.

high humidity likes a hotter plug , moisture doesnt combust well

2. from my experience the novarossi glowplug is harder to heat is it true?? my friends says only use a full charge glow heater to heat novarossi glowplug. half full wont go. any tips for that :blush::blush::blush:

you should have a fully charged ignitor yes

3. the copper shim. i'm total noob for this thing and googling around not helping at all. how to make a good tune for this part :D:D:D.

leave stock shimming if you dont understand why to change it ;)

4. in my case (4btt) my standard LSN is wayy sunk is it fine? it's may be only one turn from full turn. my engine quite new but it's already that lean for LSN any clue??

not a fan of the 24065 carb , i recommend using the stock 24063 or 24069

i believe the fuel outlet orifice in the carb got oversized in relation to the lsn , i've tried the carb ;)

5. from the manual of my kit (mbx6r) i should go for 0.5 to 1 mm for the idle but from what i learn and watch idle will be vary to suit your HSN and LSN. i don't get this one. since i flip my car frequently i go for 1mm so the car won't go out since there only few marshal in my track. how to adjust the idle any clue??

you are having a hard time getting the lsn lean enough for a proper race tune because of the 24065 carb , trust me

6. venturi restrictor. when i go for big venturi when i go for small one. my carb is a new carb any helpp..

big venturi = easier tuning , cooler temps , sometimes shorter runtimes but not always , use 7mm for best of all worlds

7. foam filter. i use a motocros oil for foam filter wich is very2 cheap compare to rc specific oil. is it fine? i use grease too for the side and the screw to seal my filter so finally no air from side. is it fine to do that.

as long as the oil is not being drug into the engine u should be fine , lightly oil outer and medium oil inner , it will foul the plug if too much gets into combustion chamber

8. my track is tight and have jumps that needed full torque to get pass the last jump any clue for the gearing i'm helpless with the gearing system i use 13/44 standard for my car (sorry out of engine topic).

stock gearings good , if you want more torque use a 46t spur

9. breakin procedure. frankly speaking i never breaking in my engine my self but i'm willing to try it. how to get a good breakin for my motor 4btt tune. i know there are lot's of methods out there but i'm not sure wich one to choose. and i don't have that engine heater so is it ok for me to go. i'm thinking to use the afterrun oil so the slip and the piston will slip a little and loosen the glow plug a bit. after that i have no clue still wandering though i have another 4btt that haven't got breakin. that wil be my testing engine for breaking in my self.

break in bible :nod: i have a personal method i use for in car break ins in there and there is also another method listed along with many tuning tips

10. the pipe and manifolds. i'm using mugen car. from what i know the manifold for mugen diffrent from others. my track is tight so wich pipe and manifold to choose. it will be a big help if you can explain why choosing it instead of the others.

9901ss/41029 or 2096ss/41029 -done! :D

so that's all my questions guyss helpp will be appreciated for i'm a noob in RC. and i love to learn. waww it's 10 questions for you guys i hope you'll love it.:blush::blush::blush::blush:

Originally Posted by yollie (Post 11107967)

great thankss Huston and all

my new engine has 24065 carb from the beginning, i think should go 24063 or 24069. wich one is easier for newbie like me.

Originally Posted by chiefin on 420 (Post 11107713)

In my experience with Nitro engines. If you have to keep the glow ignighter attached to the plug. Then the plug NEEDS to be changed. I have been told to only use Nova glowplugs on Nova engines. You always should change the plug after breakin.
Just what I have been tought/ advised. I hope this helps You. :)

Originally Posted by houston (Post 11107909)

u added a .10mm shim to the factory .80mm shim stack? bad idea

remove that shim and use a c5tgc for break in

Originally Posted by houston (Post 11108085)

plus 21-4 btt huh? hmmm interesting

which market ? not usa?

i havent seen any of them that have came with 24065 yet but.........