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Old 11-25-2009, 10:20 PM   #1
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Default .21 grp's and ninja's

does anyone out there know where some piston/sleeve/rods can be purchased for these motors, i have a few that could use a refresh and can't find them anywhere..... will any other p/s/r combo work in it possibly from novarossi???? somebody somewhere has had to have experimented with them.....
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Old 11-26-2009, 12:17 AM   #2
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I created a GRP P/S set into a Novarossi engine. I needed to use a Novarossi rod and had to drill up the hole for the piston pin from 4mm to 4.2mm
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Old 11-29-2009, 05:28 PM   #3
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ok then, no parts available, here's my next question......... what .21 motor is as powerful or even better than the grp/ninja in the same price range???? in other words i don't want to spend 4-700 dollars for a on road motor that only has .2hp more than the next that is good if i were a pro racer, but i'm a parkin lot racer with my kids so i don't neeed the best of the best.......any help would be good,thx
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Old 11-29-2009, 05:47 PM   #4
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Check out the P9 Picco engine. It's a great
engine and one of the best bang for the buck
engines there is.
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Old 11-29-2009, 06:16 PM   #5
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Default GRP Engines

I have a few brand new GRP Tuned engines available .21 Mario Rossi tuned,my e mail is [email protected],also parts available and #4 GRPplugs and pipes.
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Old 11-29-2009, 06:35 PM   #6
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RB Classico 9
JP P7
Picco
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Old 11-30-2009, 12:30 AM   #7
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You can take a look to the Novarossi 35-plus-21 with the blue or purple head (non collari edition), they are affordable and are a big bang.

Or take a look to the Novarossi RX21 models.
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Old 11-30-2009, 04:48 PM   #8
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Originally Posted by wingracer View Post
RB Classico 9
JP P7
Picco
I'm in the same boat as you on a P/S for grp. and those are the exact engines I'm considering. The classico is in the lead with a $245 price tag, the JP first line 2nd and then the Picco. If your P/S is not too bad off you may consider RayA resizing. A fellow racer has been really happy with his work, and I'm considering sending mine off. For $20 what do I have to lose, the engine is dead like it is.
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Old 11-30-2009, 05:28 PM   #9
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Quote:
Originally Posted by Roelof View Post
You can take a look to the Novarossi 35-plus-21 with the blue or purple head (non collari edition), they are affordable and are a big bang.

Or take a look to the Novarossi RX21 models.
DITTO - I too run one of each of the above mentioned motors and they are everything that you need for an eight scale. Most brands have a good motor or two in their lines but try to go with a brand that you can get replacement parts for in your area easily. The nice thing about the NR 35+21 & NR RX21 is that they both use the same rod (R7).
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Old 11-30-2009, 06:43 PM   #10
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Quote:
Originally Posted by tim allen of rc View Post
ok then, no parts available, here's my next question......... what .21 motor is as powerful or even better than the grp/ninja in the same price range???? in other words i don't want to spend 4-700 dollars for a on road motor that only has .2hp more than the next that is good if i were a pro racer, but i'm a parkin lot racer with my kids so i don't neeed the best of the best.......any help would be good,thx
Here is a great engine, it's an all time favorite and it's got the Nova Rossi quality http://kamikazercracing.com/proddeta...od=NOVS21WCS09 or this: http://kamikazercracing.com/proddeta...=35plus21TUNED
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Old 12-02-2009, 06:44 PM   #11
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rb ws7 is good!
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Old 12-02-2009, 09:11 PM   #12
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I have a used Ninja MR21-RO1 with very good pinch, a new con rod, new wrist pin, new c clips, new exhaust gasket and new manifold springs. $150 shipped (USPS-Lower 48). I just sold my MRX4R and this was the spare engine. I will also post this on the 'for sale' thread.

paypal ok

[email protected]

Last edited by Zootcapri; 12-02-2009 at 09:34 PM.
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Old 12-29-2009, 06:00 PM   #13
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Originally Posted by Zootcapri View Post
I have a used Ninja MR21-RO1 with very good pinch, a new con rod, new wrist pin, new c clips, new exhaust gasket and new manifold springs. $150 shipped (USPS-Lower 48). I just sold my MRX4R and this was the spare engine. I will also post this on the 'for sale' thread.

paypal ok

[email protected]
Do you still have any NinjaMR21-R01 parts I need piston and bearings.
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Old 12-30-2009, 06:54 AM   #14
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JP P7 Black Modified- Add a shim during break-in. After that don't look back.
This motor is great, now hurry-up and get one before they realize they are selling this motor to cheap.
P/S at Serpent America.

Last edited by kmh; 12-30-2009 at 03:19 PM.
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Old 12-30-2009, 08:08 PM   #15
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Do you still have any NinjaMR21-R01 parts I need piston and bearings.
Sold... sorry
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