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Old 10-18-2008, 05:44 AM   #16
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Don't forget about the Orion CRF. That thing is simply a beast.
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Old 10-18-2008, 06:49 AM   #17
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OS Vspec...Great engine!
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Old 10-18-2008, 07:30 AM   #18
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Tough choice, there are many great motors to chose from.

If I had to pick right now, I'd go JX21, GRP Tuned, or RB C6BBT, that's not to say that there are other good choices out there as well.
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Old 10-18-2008, 08:06 AM   #19
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Quote:
Originally Posted by boostfiend View Post
I can only speak of the tuned GRP .21 - amazing. Runs like a top engine should. Smooth idle, great response and the smoothest powerband I've ever seen from a .21 platform. Doesn't have that explosive surge of power, but more of a four stroke feel to it. Quite linear.

Current setup is with the GRP 2053 pipe and GRP #6 plug using Nitrotane fuel.

Paid $440 for the 'promo' pack, which came with everything above, minus fuel. (plus a pitmat, shims, decals, restrictors and nifty keyfob)
Diddo as to what boostfriend says. Explained perfectly. Great power, and SMOOTH power delivery. Holds a tune great. always within 1-2 hrs adjustment (mainly on the LSN) and runs all day long below 200. 8-10 min fuel economy in most cases. I run the JP3 pipe with an OS P4 plug. Dialed!
Of course there are other great engines out there. This is just my opinion, and what I have been running recently. I will buy another when the time comes.

Look into the V-spec, and the Jammin JPX21. Both are power houses, but some will say they have thier flaws. Both are under 300.00.

Good luck!
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Old 10-18-2008, 09:01 AM   #20
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2 SH power houses, last a year racing 2x per week, but only get 6-9 min. a tank.
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