ignacia

iTrader: (2)

does anybody has a piston/sleeve set up that comes with this engine or is there any rc store that has this across seas because i know theres no store here that has it somebody help me please

Scott Fisher

iTrader: (28)

I believe that Novarossi parts will fit into that engine if you cant find the Ninja packaged stuff.

mugenize1

iTrader: (-1)

What Ninja your talking about MR 21

ignacia

iTrader: (2)

yes mr21 tuned version with magnesium head

mugenize1

iTrader: (-1)

I have a sleeve for sale with only 7 tanks on it, The bearing gave way and killed the piston and I have a NEW in the box conrod for the MR21-R01 I want $60.00 for the conrod and make me an offer on the sleeve.

mugenize1

iTrader: (-1)

Both MR21 R01 are the same It is the same block all that changed is the Magneisum head and the bearings are ceramic that is all that changed ask anyone.

Roelof

Novarossi won't fit, the crankpin is different (if I can remember right it is larger), maybe the rods of a RB will work. The piston pins are different so when building up you do need the rod beloning to the P/S set. I did fit a GRP set into a Novarossi engine and with using a NR rod I only needed to drill up the hole from the piston pin from 4mm up to 4.2mm

I know the early REDS racing models were based on GRP messurements or you have to look at the new Techonpower engines which actually are the GRP engines. Only no onroad P/S set but probbebly you only need to raise the exhaust port.

On the other hand, the time and costs is not worth it, getting a new engine seems to me like a better choice.

SebO

iTrader: (1)

what are the benefits of the magnesium head?

lil-bump

iTrader: (89)

Magnesium is lighter so it will keep the center of gravity lower. The down side is magnesium does not disipate heat as well as allumunum.


I agree with Roelof. Just buy a new engine with a better supply of parts.


Pass you soon...

mugenize1

iTrader: (-1)

+1 mugen and grp parts are getting harder to find I would go with a new block.

wingracer

iTrader: (24)

Only other option is to get it pinched.

mugenize1

iTrader: (-1)

I told him I have a sleeve with 7 tanks I never got to hit the needles on the engine and the bearing went on the engine. It is an MR21 R01 sleeve.

mugenize1

iTrader: (-1)

I have the MR21 R01 engine block with no rear bearing and no piston. I also have an GRP .21 tuneline on-road with no front bearing and no piston and no conrod.