Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
O.S. Making new ninja engines
#1
Quote:After the exclusive news about the Mugen/GRP split, we are pleased to publish detailed pictures of the JX21-B01 engine and various parts. Click 'Read More' to view them.

The engine, OEM manufactured by OS engines for Ninja, is loosely based on their V-Spec with some custom features: the crankcase is from the OS 28XZ engine and does not feature the distinctive OS 'black' coating, the sleeve port design is a bit different from the V-Spec, head design, the crankshaft appears to have the same 'DLC' coating as the OS Speed V-spec but without counterweights. All in all a mix up of a few OS engines and Ninja branding.

[Image: img_0001.jpg]

[Image: img_0002.jpg]

[Image: img_0003.jpg]

[Image: img_0004.jpg]

[Image: img_0006.jpg]

[Image: img_0007.jpg]

[Image: img_0008.jpg]

[Image: img_0011.jpg]

[Image: img_0012.jpg]

[Image: img_0013.jpg]

[Image: img_0014.jpg]
Confusedalute:
Confusedalute:Casterracingusa.com Confusedalute: TrueRC.comConfusedalute: Confusedalute:Fusionracingrc.com (Fusion Fluids) Confusedalute: Nitrotoyz.comConfusedalute:Thercshack.comConfusedalute:Fastlane-graphix.comConfusedalute:
Reply
#2
OS does rock. Haha

Whats the point of putting a .21 in a .28 Crank-case.
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#3
bigger crank bearings
8igth 2.0
thanks to:
http://www.slickhobbies.com Burnside, KY/Littleton Co.
KillerB Racing
1994 yahama Phazer II LE snowmobile for sale..
Reply
#4
Ahh, Never really thought of that. Wonder how it runs.
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#5
Like junk
Myspace.com/Mtdrew24
Reply
#6
stupid....
Reply
#7
That is gonna be a good motor.

GS RACING, TQ FUEL, FASTLANE GRAPHIX, CZECH-IT-OUT
Reply
#8
I agree. It will be a good motor but I bet overpriced! The head looks fragile. Wonder if it will have the legendary OS reliability and ease of tune?
Reply
#9
I would think with the oversized crankshaft bearings you're gonna get something a bit more reliable, more support for the crank less vibrations or something. I wouldnt really call it a breakthrough but it definatly has some good logic.
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#10
Uhhhhh.... Who said .28's have bigger crank bearings?????
Dont mess wit my sig Line tune!
--Then follow the rules! haha!-- -Tune
Reply
#11
*shrug* Some guy. Never took one apart like i know. :-D
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#12
Ok... well a .28 only has a larger bore and MAYBE a slightly longer stroke. T.... The case is no bigger, i mean C'mon how would you bolt it in if it was? if anything it may be .1 or .2 mm bigger but wheres the advantage in that?. i would think the advantage would be a thicker sleevve making the motor more durable and then being able to take advantage of the new porting in the .28
Dont mess wit my sig Line tune!
--Then follow the rules! haha!-- -Tune
Reply
#13
Yeah...some guy in the beginning said that.

Would you want a longer stroke, or a bigger bore...longer stroke has more torque doesnt it, bigger bore short stroke gives you more top end right?

If I remember this from engines class in college hah
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#14
pretty sure its the other way around, the long stroke allows for more rpm's on top, and the bigger bore gives more down low....I THINK

GS RACING, TQ FUEL, FASTLANE GRAPHIX, CZECH-IT-OUT
Reply
#15
yeah I cant remember from engines class. Makes sense a short stroke will bring you to RPM more quickly but i think longer stroke gives you more torqeu. Who knows they are all mostly fast anyway, unless its like a 90 buck engine.
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply
#16
Shorter Stroke=Higher possible RPM's
Reply
#17
thats the one. Lol
LSP lots of Khz, Werks .28 8 port.

Revo 2.5, TRX 3.3 Engine, Center Diff. Fast and Turns on a dime.
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Multiple Questions about Engines... janetandsteveo 10 6,272 04-10-2008, 11:25 AM
Last Post: J-Dub
  GRP Engines Toughtrax 2 2,426 02-06-2008, 12:36 AM
Last Post: J-Dub
  Go Tech Engines. slaytanic 31 7,894 09-21-2007, 09:51 PM
Last Post: J-Dub
  werks engines? reliable? cheesecake 10 3,261 09-01-2007, 12:46 AM
Last Post: cheesecake
  opinions on engines for 8ight Tex 87 16,026 02-26-2007, 08:18 AM
Last Post: rocco79
  Engines Rawkfist_02 37 6,908 02-03-2007, 04:55 PM
Last Post: Czech-it-Out Graphics
  bench tuning engines chicagokenji 17 4,630 07-14-2006, 06:47 PM
Last Post: kevinF

Forum Jump:


Users browsing this thread: