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Old 07-28-2009, 02:14 PM   #16
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thats a terrible situation with your engine , hope i can help .


use an inline fuel filter (even on your losi) , 8" of pressure return line , 7mm carb restrictor , odonnell #77 , sounds like you are really rich on the low speed and have just been leaning the high speed out since you broke the engine in ? , reset the carb , pull the slide barrel out screw the low needle in all the way and back out 3.75 turns , set the idle at about 1mm open or just a little less , hsn just in from flush with the brass housing .


i didn't notice what pipe you are running but it will run (terrible) with any pipe , just runs better with certain ones (ofna 063)


hope this helps ,
monty


oh , and use 30% or pull the shims on the underhead down to .60mm
6.5 currently
JP3
I went with 20% only for longer engine life, is this not the case? And i have no idea about shims, just whatever came with it.
I will put extra fuel line and switch plugs and restrictor, pipe will stay the same due to cash (got none)and fuel i'll see about switching.
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Old 07-29-2009, 09:13 PM   #17
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I Have four Novarossi engines, love their engines but hate the plugs. McCoy 8
or an Odonnell #77 or #100 the #99 is too cold for 20% fuel trust me.
Bought 2 #77's so we'll see this weekend.
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Old 07-30-2009, 01:23 AM   #18
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Also check the fuel tubing that it is not sucking air in when the tank lid is open.
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Old 07-30-2009, 07:39 AM   #19
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Also check the fuel tubing that it is not sucking air in when the tank lid is open.
? ? ?
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Old 07-30-2009, 07:55 AM   #20
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Buy a Mc8 and compare the two.
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Old 07-30-2009, 07:58 AM   #21
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Too cold
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Old 07-30-2009, 08:28 AM   #22
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sounds like a similar problem happening over here, with the exhaust so close, spilling cold fuel onto the hot exhaust will cause these problems.
Make your self a divider between your tank and exhaust, this is bolted to the shell.
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Old 07-30-2009, 04:26 PM   #23
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great standard plugs

odo77
odo100
mccoy mc8
the newer special ultra c5g (silver body)

turbo
odo77t
odo97t
novarossi special ultra c5tgc (silver body)
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Old 07-30-2009, 05:37 PM   #24
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Saturday is almost here so i will let everyone know the outcome after i do the pressure line/filter technique and use O'donnell 77 plugs. I also added a quart of 30% to my half gallon of 20% thereby making it around 23%
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Old 07-30-2009, 05:55 PM   #25
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Quote:
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Saturday is almost here so i will let everyone know the outcome after i do the pressure line/filter technique and use O'donnell 77 plugs. I also added a quart of 30% to my half gallon of 20% thereby making it around 23%
23% huh

interesting
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Old 07-31-2009, 03:34 AM   #26
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LOL. Too much science here for me.
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Old 08-02-2009, 09:11 AM   #27
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Well aside from the rain cutting the main to 8 minutes i had no problems all day used the O'donnell #77 plug.
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Old 08-02-2009, 11:22 PM   #28
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Well aside from the rain cutting the main to 8 minutes i had no problems all day used the O'donnell #77 plug.
sooooo..................... what did you notice after the plug change ?
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Old 08-02-2009, 11:30 PM   #29
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Nothing really performance wise just that it stayed running when i came in the pits and at the start of the race. Probably the plug #77 but also could have been the dynamite 086 pipe. I was very happy but rain sucks on race day.
Thanks for everyones help.
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Old 08-09-2009, 09:20 PM   #30
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now i have a problem here..
i running 0.70 shim op.25% Tornado Nitro.Os A5 Plug I Run In malaysia.
The Engine Give me feeling like very under power.it performance just like normal 3 port engine.i already break in this enigne very well with heat cycle 13 tank temp around 200f.
the engine no toq and top end also..itzzit tuning problem?
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