Engine Wars Thread
10-01-2003, 08:25 PM
#391
Originally posted by Motorman
they are calling it a long stroke but stroke has not changed neither has bore.
stroke has not changed in any way. go back and look at the bore and stroke of all the previous models it has not changed just rod lengths have. go look again all the way down to the side port motors! It will be a short rod motor. That engine is Mugens new NS 12 variant. They are getting an 21 R1WC variant also soon
they are calling it a long stroke but stroke has not changed neither has bore.
stroke has not changed in any way. go back and look at the bore and stroke of all the previous models it has not changed just rod lengths have. go look again all the way down to the side port motors! It will be a short rod motor. That engine is Mugens new NS 12 variant. They are getting an 21 R1WC variant also soon
you might wanna check this engine's data once more.
This is a long stroke, not a long rod.
14.25 stroke x 13.7 bore is long stroke.
10-01-2003, 08:40 PM
#392
Originally posted by Motorman
That engine is Mugens new NS 12 variant.
That engine is Mugens new NS 12 variant.
10-01-2003, 08:47 PM
#393
NSR come with same color carb insert as NS12S5
10-01-2003, 09:02 PM
#394
NRS12S5
Has anyone run this motor yet? If so, how does it perform?
Does it scream but lack bottom end? Or, is this a real good motor?
Does it scream but lack bottom end? Or, is this a real good motor?
10-01-2003, 09:12 PM
#395
Re: NRS12S5
Originally posted by StepPins
Has anyone run this motor yet? If so, how does it perform?
Does it scream but lack bottom end? Or, is this a real good motor?
Has anyone run this motor yet? If so, how does it perform?
Does it scream but lack bottom end? Or, is this a real good motor?
10-01-2003, 09:23 PM
#396
Hi InitialD!,
It's been a while
Thanks for the info, I can always count on you to get answers!
It's been a while
Thanks for the info, I can always count on you to get answers!
10-01-2003, 09:27 PM
#397
Tech Fanatic
Thread Starter
From my understanding haven't all the nova engines since the cx12 till the ns12 been 14.00 x 13.80?
This one by the specs has a longer stroke and smaller bore.
Also isn't any engine that has it's stroke longer then the width of the bore known as a "longstroke" or have i been smoking my pipe too long?
10-01-2003, 09:53 PM
#398
One word. Amazing!!!!
considering my previous engine is OS 12TR, this engine have tons of torque and seem to have endless rpm. I haven't finish breaking in the engine, still running the engine on rich side but I can already tell it's a lot faster than the OS 12TR.
I gotta thanks Manticore for giving up his NSR12S5, otherwise disaster999 won't be able to deliever this beast to me as he promised.
considering my previous engine is OS 12TR, this engine have tons of torque and seem to have endless rpm. I haven't finish breaking in the engine, still running the engine on rich side but I can already tell it's a lot faster than the OS 12TR.
I gotta thanks Manticore for giving up his NSR12S5, otherwise disaster999 won't be able to deliever this beast to me as he promised.
10-01-2003, 10:52 PM
#399
Tech Apprentice
Isn't there a roar rule saying the engines need to be 14 x 13.8? If so then that engine would be illegal??
10-02-2003, 04:00 AM
#400
Nope, there is only a rule that says the displacement can be max. 2.11 cc (0.12 cui).
How you get the is your roblem...
How you get the is your roblem...
10-02-2003, 07:36 AM
#401
Originally posted by EVOLUTION
Top gun,clean out your PM inbox.
Top gun,clean out your PM inbox.
10-02-2003, 08:24 AM
#402
On new engine, strock been encrease on .25 mm and diameter decrease 0.06 mm. I would concidering like no real changes were made. The square area of piston has been decrease by .88%, so down force been decrease too, but it is so low, I wouldn't realy concider it as change. (down force is pressure of burned gases multiply by area of piston). But with longer strock and ROAR, IFMAR and efra ruls of 4.5 mm exhaust windows height-it will have tighter timing on transfer and exhuast (Stefan says windows look the same). So, without modding this will be more torq and less top end, but with better milage.
It is my opinion, I might be wrong, I didn't see no one of them yet.
BTW, later activities and inputs from everybody in this thread realy make me happy. Thanks everybody and let's keep it on.
It is my opinion, I might be wrong, I didn't see no one of them yet.
BTW, later activities and inputs from everybody in this thread realy make me happy. Thanks everybody and let's keep it on.
10-02-2003, 08:55 AM
#403
As I know, in engine's world the short strock engines are called if diameterof piston is bigger them strock, if the diameter of piston smaller then strock-long strock engine and if diameter of piston equal to strock-it calls "square" ( I am not sure in english is "square" does make sence, might be different word use). So, all our on-road engines are long strock.
10-02-2003, 09:06 AM
#404
I stand corrected they did change it some go figure. I must have had a dislexic moment when I looked at it. However the change is fairly trivial it will give it some more torque but it will be a very small amount. .25 MM is only about .010 thousanths of an inch or the thickness of a silver head shim.
the data says the porting locations on the liner have changed so I assume they have adjusted the timing on them to get back to where they were.
go figure. I must have had a dislexic moment when I looked at it. However the change is fairly trivial it will give it some more torque but it will be a very small amount. .25 MM is only about .010 thousanths of an inch or the thickness of a silver head shim.
4.5 mm exhaust windows height-it will have tighter timing on transfer and exhuast
10-02-2003, 09:14 AM
#405
Originally posted by Motorman
the data says the porting locations on the liner have changed so I assume they have adjusted the timing on them to get back to where they were.
the data says the porting locations on the liner have changed so I assume they have adjusted the timing on them to get back to where they were.
Last edited by Top Gun 777; 10-02-2003 at 10:00 AM.