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Old 12-02-2009, 06:02 PM   #31
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this is a grp ninja?
http://www.ninja-engine.com/content/...lang=0&engID=1

i have a grp 21 buggy engine with a ninja head...
that is confirmed!

yes
this is the new jx series that is made via OS

http://www.neobuggy.net/modules/news...p?storyid=3218
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Old 12-02-2009, 09:07 PM   #32
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FYI - the top of the piston and the button show signs of serious detonation for anyone that hasn't seen it before. I think he was running way too much nitro. Once you see that kind of pitting from detonation, it's pretty well toast. you already know that in the case of this engine, but a good opportunity for everyone to see what it looks like.
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Old 12-02-2009, 09:22 PM   #33
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FYI - the top of the piston and the button show signs of serious detonation for anyone that hasn't seen it before. I think he was running way too much nitro. Once you see that kind of pitting from detonation, it's pretty well toast. you already know that in the case of this engine, but a good opportunity for everyone to see what it looks like.
this was caused by a rear bearing that let go
(trx 3.3 engine)




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Old 12-02-2009, 09:31 PM   #34
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Wow! lol Yeah, when you see big dents like that, you have some serious debris inside the engine.

One more thing I wanted to point out to people that are considering buying a used engine - notice on the picture of the crankshaft there's a section of radial scratches right where the induction port is located. That's a solid indication that the engine was run for some time without an air filter. Chances are the filter fell off the engine early during a run and he ran it out of fuel with no air filter on the engine. Another sign that you should walk away from that engine.
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Old 12-22-2009, 05:45 PM   #35
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i fired up this engine today,

it seemed to work great didnt drive it around as i let it idle a bit on my starter box to get used to torco fuel.

but so far so good it will be a great back up in a pinch.
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Old 12-22-2009, 07:14 PM   #36
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All that 3.3 needs is a scotch brite and some ear wax = good as new
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Old 12-28-2009, 01:22 AM   #37
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i ran the grp saturday and she ran great all day long
in the main i was doing really well sitting in second just a few seconds behind 1st and i was taken out by a losi in a head on crash when he missed a jump and ended up in my lane.

here is a picture of the main sheet.
(my name is marcus.)
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