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Old 03-10-2008, 05:27 PM   #1
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Default honest opinion on ninja engines

I looking to buy a new engine. Right now I have a os.12tz eb mods. One question, does mugen still import ninja engines? Or are they back with jp? Im looking for something a little quicker than my tz, and have heard ninjas are quick. My main concern is are they reliable and easy to tune. Another main concern is how easy and fast can I get parts for them. I would buy a maxpower but I have heard they are horrible about getting parts
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Old 03-10-2008, 05:48 PM   #2
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Originally Posted by tony montana View Post
I looking to buy a new engine. Right now I have a os.12tz eb mods. One question, does mugen still import ninja engines? Or are they back with jp? Im looking for something a little quicker than my tz, and have heard ninjas are quick. My main concern is are they reliable and easy to tune. Another main concern is how easy and fast can I get parts for them. I would buy a maxpower but I have heard they are horrible about getting parts
The original Ninja engine that Mugen was selling was made by GRP. They are not doing those engines anymore. GRP engines are now distributed in the USA by Horizon Hobby. I was told they will be doing JP engines on a very limited/small quantity basis. There is a new Ninja engine now and it is produced by OS. I don't know if they have an onroad available yet. I never owned/ran them, and as far as onroad goes I never would. I have a very low opinion of those engines. I do now know for certain, but my guess is that the parts are the same as the GRP line that Horizon is importing, but I do not know that for certain. Buy an IDM engine and if they are too much money then get a regular JL Evo 3. If you are shy of Picco engines then go for a Novarossi if the price is affordable.
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Old 03-10-2008, 05:58 PM   #3
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isnt the idm engine basically a sirio?
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Old 03-10-2008, 06:03 PM   #4
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isnt the idm engine basically a sirio?
No. The IDM engine is based on a Picco, then is modified and the parts are hand fitted by Daniele Ielasi.... I hope I spelled his name correctly.
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Old 03-10-2008, 06:57 PM   #5
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The IDM motor are very easy to tune and very reliably , not to mention have tons of bottom end.
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Old 03-11-2008, 07:31 AM   #6
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I am looking to buy the 12TZ 5 port. Will you be selling yours?

Also I thought the EB is already very fast. Is it not fast enough?

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Old 03-11-2008, 07:40 AM   #7
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The Ninja engines (originals) were good at first, but then, you had a 50/50 chance to get a good one. Stick with what you know is good. Novarossi engines have a rep as being good.....Not very often do you hear of a bad one.
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Old 03-11-2008, 08:09 AM   #8
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Tony,

I have the ninja and ran it all last season at 301 raceway..

Tuning is a little problematic at times but not a big problem.
As far as speed and reliability, I can't complain.... I ran my ninja all last year without any problems. I went through close to 3 gallons of nitro without replacing any parts. I just ordered a con rod to be replaced by next weekend.

Speed is okay. by my opinion (which doesn't count for much yet), the bottom end is a little weak compared to an engine like the novarossi 12-3sct, however at the top end I was more than happy. At the end of the straight at 301, I had no problem keeping up with almost all cars,..........

hope this helps... but depending of your skill and experiance this engine might not be for you........... I just got the Maxpower SL3 for this year.
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Old 03-11-2008, 11:41 AM   #9
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Tony,

Ninja engines have had a lot of stick in this forum but I know a lot of people run them successfully. I'd go with Picco, even an untuned one has awesome bottom end.
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Old 03-11-2008, 11:46 AM   #10
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My best bud has a ninja on his XRAY NTI and I tuned it for him and unfortunately it was a nightmare! There is a big 50/50 split with this engine. Some love, some dont. Unfortunately Im in the "some dont" category. I can only offer you my opinion and what we went through. Let me start off by saying, he is still running the engine today and it runs great but to get it to run that way was not easy. I don't want to totally bash the ninja engine but its been an interesting experience dealing with this engine. First off, break in process was really tough. Engine had alot of compression and would not idle with factory settings. We were chasing settings for an entire day just to get it to start and idle for more than 5 minutes. Ive broken in a alot of engines in my day and I never had this much trouble with any of my novas or O.S. engines.

Getting the engine dialed in at the track was a bit of a headache. The engine would start up fine and we were able to get a few laps down but if we wanted to make some minor carb adjustments and fine tuning, the engine would just freak out. I checked for air leaks everywhere but found none. Even minor adjustments would cause the engine to act eradically and eventually flame out. So we just set the needles back to the settings that worked and left them there. I'm afraid of leaning the engine out due to many people complaining about the weak conrod so we really haven't seen what this thing can do. Besides that, weve got it running and it can run well with the other engines out there. I will agree with tomekz, bottom end is not snappy at all but this thing is a rocket down the straight away. Loads of top end!

Me and my bud are convinced that we just got a very temperamental little engine. We cant speak for all of these engines and I have heard of people having very good luck with them. Unfortunately we weren't one of those. On many occasions we've contemplated leaning it really thin and sacrificing it to the RC Car Gods. Im sure the RC Car Gods will find our sacrifice worthy and bless us with a non problematic O.S. or maybe even a JLR Red dot! I guess we will see what happens this Saturday.

Would I recommend one, no. Stick with your OS or try that Picco JLR Red dot. Ive heard alot of good things about that engine and you cant beat the price. Cant go wrong with Nova engines, pricey yes but you get what you pay for.
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Old 03-11-2008, 11:59 AM   #11
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unless you are feeling like you want to do testing for free....


I would stick with what has been working for years, nova/sirio/picco
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Old 03-11-2008, 12:57 PM   #12
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unless you are feeling like you want to do testing for free....


I would stick with what has been working for years, nova/sirio/picco
Very well put.
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Old 03-11-2008, 02:01 PM   #13
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Do yourself a favor and buy a nova . They have been around forever and the just work
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