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23cc Engine break-in

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Old 12-28-2009, 11:56 PM
  #1  
blackyz250
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Default 23cc Engine break-in

Any suggestions on breaking in 23cc Rovan Baja ? Thanks in advance!!
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Old 12-29-2009, 06:23 AM
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slawhammer
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Default RE: 23cc Engine break-in

let it warm up a bit...just drive it..say 15 to 20 minutes..let cool down get cold...check the the cylinder head bolts are tight
run again.......let it rip you should br ok.....oil/gas mix..25:1...thats 5oz oil to 1 gallon of gasoline....
you may have to make minor adjustments to the carb..Best to you have fun..Slawhammer
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Old 12-30-2009, 12:01 AM
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Default RE: 23cc Engine break-in

Slawhammer, Thanks for the info. Have a happy NewYear bro!
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Old 12-30-2009, 12:31 AM
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Default RE: 23cc Engine break-in

Slawhammer pretty much nailed it. Breaking in these gas engines is much easier than with nitros. They basically break themselves in. First couple tanks, avoid long WOT runs, vary the throttle a bit and check the plug. You'll notice the engine start to open up after a few tanks and really start to perform.
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Old 12-30-2009, 12:56 AM
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Default RE: 23cc Engine break-in

What type of oil do you used?


ORIGINAL: slawhammer

let it warm up a bit...just drive it..say 15 to 20 minutes..let cool down get cold...check the the cylinder head bolts are tight
run again.......let it rip you should br ok.....oil/gas mix..25:1...thats 5oz oil to 1 gallon of gasoline....
you may have to make minor adjustments to the carb..Best to you have fun..Slawhammer
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Old 12-30-2009, 02:23 AM
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EngageRC
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Default RE: 23cc Engine break-in

let the engine idle for 1/2 tank.
drive it easy on low rpm for another 1/2 tank.

i would repeat for 2nd tank.
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Old 12-30-2009, 04:03 AM
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Default RE: 23cc Engine break-in


ORIGINAL: EngageRC

let the engine idle for 1/2 tank.
drive it easy on low rpm for another 1/2 tank.

i would repeat for 2nd tank.
what no way!
this is not nitro
slawhammer nailed it! [:-]
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Old 12-30-2009, 05:41 AM
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Default RE: 23cc Engine break-in

I have been told to run it around varying throttle through the rev range (without WOT) for 5-10 minutes, let it cool for 10 minutes and repeat the cycle 2 or 3 times. The cooling between sessions is best for the motor. Run non-synthetic through your first tank then switch to synthetic and drive it hard after that! Gassers respond well to the whip!!!

The very worst thing you can do is run it at a steady rpm while running it in, so ignore that suggestion above.
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Old 12-30-2009, 10:08 AM
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Default RE: 23cc Engine break-in

well i have 6 largescale veichles and i ran nothing but onroad23cc last summer & never had any trouble from the engines,i ran the GT5-R for 5-6 gallons for nutech while testing it and no problems my usual break in procedure is:

start up with a rich mix.loads smoke and gently vary speed with no WOT......repeat this for a tank with no wot but towards end of first tank increse revs high but not prolonged.

let cool...........1st tank gone

second tank

more or less use it and tune it and break it in to the high rpm gradualy,by the end of the second tank you should be fully tuned and running great.

i never take out a plug,i use the high speed needle to get max rpm but turn back a little to richen

i always use low speed to tune idle and for best acceleration.

believe it or not for 5-6 gallons on my fg evo onroad i have same plug never removed from new.

this is just my way & if ever i have to inspect a plug they are always a lovely choclate bown colour.

my mix ratio is 2mill syntetic to 5 liters

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Old 12-30-2009, 12:04 PM
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Default RE: 23cc Engine break-in


ORIGINAL: tonystott

I have been told to run it around varying throttle through the rev range (without WOT) for 5-10 minutes, let it cool for 10 minutes and repeat the cycle 2 or 3 times. The cooling between sessions is best for the motor. Run non-synthetic through your first tank then switch to synthetic and drive it hard after that! Gassers respond well to the whip!!!

The very worst thing you can do is run it at a steady rpm while running it in, so ignore that suggestion above.
Agreed!
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Old 12-31-2009, 08:20 PM
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Default RE: 23cc Engine break-in

what ever you do. just DONT hi-rev it. low-mid gradually.
Let the engine and the bearing break in.
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Old 12-31-2009, 09:50 PM
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Default RE: 23cc Engine break-in

i was in the babying camp before but was convinced to nail it off the get go and it works...rich H mix, 25:1 oil and just drive it...no more than 5-10 secs wot for first 10-15 mins...let it cool for 10 mins..then go again for another 15mins under same conditions. after first tank start to tune it and give it what for...let it cool again after 20 mins or so and repeat. 3rd tank tune it in and don't look back..after a gallon or so it'll really start to loosen up. just done a obr ported 30.5 and OBR 27.2 full mod 4 bolt like this and they're screaming now...heaps off compression and looking in the exhaust ports absolutely no cylinder scoring
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Old 01-01-2010, 12:53 AM
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Default RE: 23cc Engine break-in


ORIGINAL: mooman007uk

i was in the babying camp before but was convinced to nail it off the get go and it works...rich H mix, 25:1 oil and just drive it...no more than 5-10 secs wot for first 10-15 mins...let it cool for 10 mins..then go again for another 15mins under same conditions. after first tank start to tune it and give it what for...let it cool again after 20 mins or so and repeat. 3rd tank tune it in and don't look back..after a gallon or so it'll really start to loosen up. just done a obr ported 30.5 and OBR 27.2 full mod 4 bolt like this and they're screaming now...heaps off compression and looking in the exhaust ports absolutely no cylinder scoring
Yep, if you baby them the ring will not seat 100%
As long as the motor is under a load you can get on them fairly hard off the get go
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Old 01-01-2010, 08:24 PM
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Default RE: 23cc Engine break-in

What oil do you guys us to mix with petrol and don't say 2 stroke [>:]
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Old 01-01-2010, 09:00 PM
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Default RE: 23cc Engine break-in

Conventional oil,heavy mixture (16:1)for the first 3 tanks, then switch to a high quality full synthetic and tune for max performance.My preference is Redline Racing 2 stroke synthetic race oil mixed at 32:1
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Old 01-02-2010, 12:05 AM
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Default RE: 23cc Engine break-in

I use Amsoil Saber from the beginning..
20:1 for first tank, then 25:1 second and may try 30:1 on third
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Old 01-02-2010, 07:33 AM
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Default RE: 23cc Engine break-in

What about petrol standard or super can you tell any difference ?
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Old 01-02-2010, 11:56 AM
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Default RE: 23cc Engine break-in


ORIGINAL: rc-jg

What about petrol standard or super can you tell any difference ?
I've used Colman fuel before and that is about 55 octane
on my 23cc motor I saw a slight topend speed increase with Colman and better throttle responce
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Old 01-02-2010, 01:14 PM
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Default RE: 23cc Engine break-in


ORIGINAL: rc-jg

What oil do you guys us to mix with petrol and don't say 2 stroke [>:]
Ipone Samourai (Monster Beetle Pro) , Castrol A747 (Sportsline 08) , Motul 800 (Baja 5b)
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Old 02-20-2018, 06:38 PM
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Pennzoil 2 cycle petroleum based i hear is good to, then switch to synthetic
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