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Old 01-04-2010, 03:52 AM   #1
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Default !!!!!!!! GRP,NINJA HELP !!!!!!!!!!

hey guys, does anyone know if the grp piston and sleeve is the exact same as mr 21 bol-a ninja piston and sleeve as i am under the belief so

please reply
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Old 01-04-2010, 05:58 AM   #2
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they should be the same ..note ...i have never tried one
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Old 01-04-2010, 07:05 AM   #3
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The ninja has cainine cuts on it and grp dont. The exhaust port is opened up a little more on the ninja also. This I know for sure. With a dremel and some slight modifing you can make them the same.
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Old 01-04-2010, 08:17 AM   #4
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Default grp

i have had a couple grp tuned 21 with the porting the same as the ninja and some didnt have them maybe early release other wise they will work in each case hope this helps
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Old 01-09-2010, 01:59 PM   #5
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Default MRT Ninja

Hi guys,

Does anyone here have any MRT Ninja parts or the magnesium head lying around? I have 2 of these MR21-B01T's and i'm scared to use them further till i can source some parts for them. Both still run fast as hell but i'd rather be safe than sorry.
Also looking for Tuned P/S sets for the GRP .21 if anyone wants to let go for a good price.
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Old 01-09-2010, 03:14 PM   #6
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I have a whole engine and pipe for sale, rod is only worn .001 and no wear on crank, less than 1.5 gallons on it. $140.00 w/ pipe.



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Old 01-09-2010, 09:54 PM   #7
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Quote:
Originally Posted by kerrr8 View Post
hey guys, does anyone know if the grp piston and sleeve is the exact same as mr 21 bol-a ninja piston and sleeve as i am under the belief so

please reply
the piston and sleeve will work in both i have did it and it worked fine. as for the k9 cut on the sleeve i think that is more to do with the sport vs tuned.
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Old 01-11-2010, 12:32 AM   #8
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hey mate i have a mr ninja head with minor ding at back and a rod (less than 2 litres) and crankcase.

Quote:
Originally Posted by MazdaspeedFC View Post
Hi guys,

Does anyone here have any MRT Ninja parts or the magnesium head lying around? I have 2 of these MR21-B01T's and i'm scared to use them further till i can source some parts for them. Both still run fast as hell but i'd rather be safe than sorry.
Also looking for Tuned P/S sets for the GRP .21 if anyone wants to let go for a good price.
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