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Jammin jpx.21 vs os 21xz-b

Jammin jpx.21 vs os 21xz-b

Old 03-06-2013, 01:27 PM
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Default Jammin jpx.21 vs os 21xz-b

I wanna know what's better I know someone who will give one if those engines for free
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Old 03-06-2013, 05:13 PM
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OS. Would be much better.
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Old 03-06-2013, 11:41 PM
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The jammin "picco" has insane power but less run time... The OS has less power but better run time..
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Old 03-07-2013, 09:28 AM
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The Jammin engine the power for truggy with no problem in the buggy it is nuts but can be smoothed out with 7mm restrictor and a soft clutch, the OS is very nice on the bottom end but feels great but I need that bottom from the Jammin, I use our OFNA 2047 to make the run time and my tank is at 122cc right now and I make the 10min window. The other engine that you may want like the Jammin are the Reds engines or Picco Boost 5 ports. I believe they smoothed out the bottom a little but still insane with power.

Jammin is the Chevy
Picco Boost is the GMC
Reds is the Cadillacs
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Old 03-07-2013, 09:43 AM
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The os is great,super reliable and a breeze to tune
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