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-   -   Ninja Engine by GRP (https://www.rctech.net/forum/offroad-nitro-engine-forum/95814-ninja-engine-grp.html)

bozla 01-01-2008 11:09 AM

1 Attachment(s)

Originally Posted by bozla (Post 3990852)
I kept blowing plugs on the weekend which would suggest that my con-rods gone. -Then to top it all my crankshaft snapped in half... What are good replacements? Will most .21 cranks fit?

Here's my broken crank. Anyone know where I can get conrods?

DanielSon 01-01-2008 02:41 PM

Holy &^%!$

I go M.I.A for a few months due to school obligations and come back to see such a major change for 2008!

I for one have never had any major issues running the Ninja platform for the duration of last season but you wont see me complaining now that Mugen will be back with JP Racing. Hopefully Mike and Jean-Paul can pick up where they left off and continue with development and winning. I think I might be smelling some JP fuel coming our way, only for those blessed souls.



Originally Posted by cdelong (Post 3994212)
it made power.... it just couldn't (and still can't) LAST. if it was SO hot, you wouldn't have ditched it either.

the bus has crashed......

celeong- I will give you $100 just to go away. Sadly, interent forums have become a cesspool of over-opinionated, under-qualified, mis-informed individuals. There is an absence of a readily recognised word to describe these infantilised adults. I expect a full bladder release is coming my way. Piss away. Wee wee.

ezveedub 01-01-2008 03:21 PM


Originally Posted by bozla (Post 4026849)
Here's my broken crank. Anyone know where I can get conrods?

http://www.amainhobbies.com/product_...oducts_id/7315

http://www.nitrohouse.com/engines,_ninja.htm

cdelong 01-01-2008 03:41 PM


Originally Posted by DanielSon (Post 4027329)
celeong- I will give you $100 just to go away. Sadly, interent forums have become a cesspool of over-opinionated, under-qualified, mis-informed individuals. There is an absence of a readily recognised word to describe these infantilised adults. I expect a full bladder release is coming my way. Piss away. Wee wee.

put your money where your pie hole is......

here's my paypal- [email protected]

I see $100 in it today I won't make another post in this thread. Otherwise, I'm quite qualified to post my "opinions" anywhere I want based on engineering facts and simple deltronics measurements... if you've ever heard of those tools.

nitrodude 01-01-2008 04:06 PM

Bozla, I have a RO1 with a broken piston. There's nothing else wrong with it, I actauly broke the piston taking the motor apart. It has about a gallon tru it, the conrod is in good shape. I want to get rid of it. Pm me. I'll get some pics.

bozla 01-01-2008 06:04 PM

Thanks Nitrodude. I took mine apart today and realised it's got a broken piston too. With the cost of a crank, piston and sleeve, and con-rod I might just go and get a new engine thats simpler and cheaper. PM me a price and I'll think about it...

nitrodude 01-01-2008 06:41 PM

You're right about the price, you're better off getting a new engine. You might want to think about the Picco P9R, no lack of power and for $290, its a bargain, its what I ran.

ezveedub 01-01-2008 11:41 PM

I guess you guys are yanking the back covers off with the piston down?

bozla 01-02-2008 04:32 AM

Yeah, I didn't realise that was a bad thing, but I do now!

nitrodude 01-02-2008 07:17 AM

I actually new of it, and had it in mind, but I thought it was at TDC.:cry:

CJMay13 01-02-2008 01:01 PM

Does anybody know what's going on with the Ninja line with GRP coming out with their own motors??

M7H 01-03-2008 12:37 AM


Originally Posted by ezveedub (Post 4029045)
I guess you guys are yanking the back covers off with the piston down?

And these guys also give advise to others.....


Originally Posted by nitrodude (Post 4029731)
I actually new of it, and had it in mind, but I thought it was at TDC.:cry:


Originally Posted by nitrodude (Post 4028115)
You're right about the price, you're better off getting a new engine. You might want to think about the Picco P9R, no lack of power and for $290, its a bargain, its what I ran.

Well, atleast with the Picco (Mega DSII) you have this piston "problem" solved... :sneaky:
http://www.serpent.com/image.php?ImageID=43325

Roelof 01-03-2008 05:09 AM


Originally Posted by M7H (Post 4032932)
And these guys also give advise to others.....

Well, atleast with the Picco (Mega DSII) you have this piston "problem" solved... :sneaky:
http://www.serpent.com/image.php?ImageID=43325

Pic I can not see but if you mention the flat spot on the back cover... all has it reasons, and GRP has done it to minimise the crankvolume for maximum power.

MugenDrew 01-03-2008 04:19 PM

Yeah I think they figured out that the performance increase was not worth the trade off of making there engine "GOOF PROOF". Ninja powered your National Champion last year rite? Pisses ya off doesn't it...watchin those Mugen's blow by.

cdelong 01-03-2008 06:59 PM

Even a broken clock is right twice a day.......


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