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Old 05-10-2010, 04:31 PM   #1
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Default GRP ninja.

hey I was wondering what pipe would work good with the older ninja the GRP Ninja .21 MR21-BO1A. I live at high altitude (the mile high city..)
I have a jp-2 but I don't know how well that will work.
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Old 05-10-2010, 04:34 PM   #2
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a good mid-range pipe works pertty well....jp2 should be alright.
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Old 05-10-2010, 05:47 PM   #3
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always had great luck with a dynamite 053 pipe set!
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Old 05-10-2010, 05:55 PM   #4
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how does the old ninja compare to the new o.s. ninja? Just curious
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Old 05-10-2010, 05:58 PM   #5
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With the thinner air, a tighter pipe may work better. I would look into the 2042 or the 2053. The 053, 086 and 007 from dynamite may work ok too but I think you will like the longer header that comes with the other two pipes. The JP2 will probably be alright but if you experience a lag or hesitation when accellerating, it will most likely be due to the larger volume pipe not creating enough back pressure. Try it out and see what you like.
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Old 05-10-2010, 06:02 PM   #6
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Quote:
Originally Posted by dreaux View Post
how does the old ninja compare to the new o.s. ninja? Just curious
it was a real smooth motor with screaming top end....might of lack on the bottom a little.
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Old 05-10-2010, 06:38 PM   #7
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Thanks a ton for the info, I am thinking of going with the dynamite 053 pipe,
looks great quality and is priced right.
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Old 05-10-2010, 06:57 PM   #8
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it was a real smooth motor with screaming top end....might of lack on the bottom a little.
100% accurate description! really easy to drive and a very stable engine. tunes great and idles well!
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Old 05-11-2010, 01:33 PM   #9
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I have just purchased one off here brand new so I am very excited to see how it runs
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Old 05-11-2010, 02:20 PM   #10
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Quote:
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I have just purchased one off here brand new so I am very excited to see how it runs
I just purchased an GRP tune .28 truggy PromoKit - GT01K-28TR can't wait to see it in the MBX6T.
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Old 05-11-2010, 03:24 PM   #11
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this engine is awesome the dynamite pipe is really nice as well +1
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Old 05-11-2010, 04:24 PM   #12
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I just purchased an GRP tune .28 truggy PromoKit - GT01K-28TR can't wait to see it in the MBX6T.
i got the ninja .28 and the grp .28( basicly the same) 53 will give it good responsivness in the low...and the 86 make the top really scream...its very noticable on this engine.
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Old 05-11-2010, 06:48 PM   #13
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Quote:
Originally Posted by dreaux View Post
how does the old ninja compare to the new o.s. ninja? Just curious
believe it or not i had mine when they first came ...my ninja have close to 18+ possible gallons and sometime loosen the plug to start it....i wish they still make them
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Old 05-11-2010, 08:30 PM   #14
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dynamite platinum 053 is very good
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Old 05-12-2010, 04:55 AM   #15
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believe it or not i had mine when they first came ...my ninja have close to 18+ possible gallons and sometime loosen the plug to start it....i wish they still make them
That's all I own is Ninja or GRP I have 2 Ninja on-road engines and 2 GRP .28 tune-line I also have 1 GRP .21 tune-line they are great. They are all new.
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