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Old 03-26-2009, 02:00 PM   #91
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It comes shimmed for 30% out of the box.
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Old 03-26-2009, 02:11 PM   #92
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Shipping my GRP .21 non tuned to ABMods tomorrow!!
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Old 03-26-2009, 03:22 PM   #93
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I hear ya Mad!
What size are the crank bearings,I will probably try and get some good ceramics bearings for mine.
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Old 03-29-2009, 09:22 PM   #94
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how long are the non tuned motors lasting compared to the tuned motors
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Old 03-30-2009, 04:51 AM   #95
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They should last every bit as long
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Old 03-30-2009, 06:48 AM   #96
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Well I started the break in on my non tuned grp and must say that I am very impressed. I only had enough time to put about 8-9 tanks on it and my tune is still rich but the power is very good, both bottom and top. I am using a dynamite 053 and the power delivery is super smooth, which is something I like. I cant wait to finish running it in and bringing the tune up to kill mode.
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Old 03-30-2009, 11:14 AM   #97
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JPZ-what method did you use??
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Old 03-30-2009, 11:54 AM   #98
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Quote:
Originally Posted by lowcountrytj View Post
JPZ-what method did you use??
I still break them in the old school way. To some it is not proper but I have excellent results using my method. I just follow the RB method plus a few things I have mixed in. I first heat the motor to over 200 degrees with a heat gun, prime it, fire it up, and let it idle one tank at a rich setting. After that I just drive it real easy on the track, with mild rich settings, just taking it nice and smooth. I always heat the motor up with a heat gun during break in to preserve the con. rod and crank pin, as I keep putting fuel through the motor I gradually lean the mixture and keep introducing more throttle. It takes time and usually a full gallon or more before it is fully broke in but it pays off. I have p5 with 11 gallons and it still runs strong and reliable.
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Old 03-30-2009, 11:58 AM   #99
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I am looking at this motor and when I pulled it up on Horizon, it says discontinued. Am I looking at the correct motor (GRP Non-Tuned)??? Is it really going to be discontinued??

http://www.horizonhobby.com/Products...rodID=LOSR2001
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Old 03-30-2009, 12:13 PM   #100
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i think www.carolinasrc.com has them and cheap too..give them a try
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Old 03-30-2009, 01:51 PM   #101
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Quote:
Originally Posted by jpz_67 View Post
I still break them in the old school way. To some it is not proper but I have excellent results using my method. I just follow the RB method plus a few things I have mixed in. I first heat the motor to over 200 degrees with a heat gun, prime it, fire it up, and let it idle one tank at a rich setting. After that I just drive it real easy on the track, with mild rich settings, just taking it nice and smooth. I always heat the motor up with a heat gun during break in to preserve the con. rod and crank pin, as I keep putting fuel through the motor I gradually lean the mixture and keep introducing more throttle. It takes time and usually a full gallon or more before it is fully broke in but it pays off. I have p5 with 11 gallons and it still runs strong and reliable.
Thats pretty much my plan with this engine..hopefully this weekend.
Everything on the engine,clutch,flywheel the whole 9 yards is new this go round.
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Old 04-03-2009, 05:44 PM   #102
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I heated it up ,primed it and had time getting it to turn over(I think the starter box is weak so its recharging)
Its got some serious compression..Once it fired up it idled fat the whole tank w/ no problem.Good to finally see it running.
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Old 04-03-2009, 08:16 PM   #103
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nice!, mine was a serious bi*^$ to turn over also at first but after about 6 tanks it starts to become easier. What helps is prying the flywheel to get it back a bdc.
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Old 04-03-2009, 08:30 PM   #104
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Yep,had to do that several times..the 2nd tank it ran flawless at about 214.I had it on the driveway mainly idling,but I would push it back about 2 feet and 1/4 throttle it back to me a couple a times.I will be firing it back up in the morning.
Grassey,what kinda temps were you gettin at idle?I know you posted them ,cant remember.oh yeah, you running 30?
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Old 04-03-2009, 08:33 PM   #105
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No I am running 20 percent nitrotane.I'm not really sure what my temps were at idle cause heat cycled but they were at about 215 at a1/4th throttle and started to get lower and lower as I go. I have about 3/4 of a gallon on it an dits running 190 to 200 really well.
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