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Grp .21 tuned/ Sirio Cl7b/ Sirio Kanai/ Nova 421b

Grp .21 tuned/ Sirio Cl7b/ Sirio Kanai/ Nova 421b

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Old 01-10-2010, 04:37 PM
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Default Grp .21 tuned/ Sirio Cl7b/ Sirio Kanai/ Nova 421b

I have 4 motors for sale, I have freshened all 4 up and went through them, all are in great condition. I will refund your money if you get them and are not happy. I rebuild motors for people so they have been professionally went through.
My son runs for the Go factory team so we can't use these.

Grp Ninja tuned .21, less than .001 inch wear on the rod, no crank wear, slight dent in the head, with pipe for $140.00. Awesome deal!

Sirio Cl7b .21 long stroke motor, great tourque for a truggy or buggy. Just replaced the rear bearing with a Tko ceramic one, has not been ran since, less than .001 rod wear and no crank wear. Less than 2 gallons on it great motor. Sold


.21 Sirio Kanai evo 3 modded by Rick Brake. Less than a gallon on it. The crank shows no wear at all, the rod has .0005 inch wear, I have seen motors with .0005 wear right after break in. The only thing wrong with this motor is the top fin is broken off the head, it will run just fine with it or get a used one. $120.00

Novarossi 421b they are an awesome motor, one of the best they have made. They rip on the bottom and scream on the top. This one has less than 2 gallons on it, I just went through it an measured and checked everything. It has a Tko ceramic rear bearing. Crank is worn .0005 inch, Rod is worn .001 inch, pretty typical after 1-2 gallons, I would say it would be best to change in 2 more gallons or so. sold!




Grp on left, one on right is sold.

Sirio Cl7b

Sirio K3


Novarossi 421b



Pm me or e-mail [email protected]

Last edited by 22Racer; 02-04-2010 at 04:57 PM.
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Old 01-10-2010, 05:31 PM
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wanna trade the grp for a sc10 roller???

http://www.rctech.net/forum/r-c-item...oller-rtr.html
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Old 01-10-2010, 05:56 PM
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no thinks we run Kyosho stuff, just sold a sc10 last fall.

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Old 01-13-2010, 06:28 PM
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Bump for a Great Seller!

This guy knows his engines.. He does all the heavy work on my engines!!

Buy with Confidence!!

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Old 01-19-2010, 06:18 PM
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Thanks Bill!

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Old 01-19-2010, 06:26 PM
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Trade ya a Go21 5+2 for that other GRP!!!
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Old 01-20-2010, 08:54 PM
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I think the Grp may be worth a bit more, but that Go has more power! You'll like it.

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Old 01-21-2010, 11:26 AM
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Has the GRP already been broken in? Very interested to use in a OFNA Ultra Pro as a latemodel oval...
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Old 01-22-2010, 06:31 PM
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I gave the Grp a light pinch, no break in is needed, just a really nice pop to it.

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Old 02-03-2010, 09:27 PM
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I bought the other GRP 21 pictured and its in excellent shape.
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Old 02-04-2010, 04:53 PM
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Sirio Cl7b and Nova 421b are sold, Grp and Sirio Kanai are still for sale.

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