Does anyone know what the head clearance (squish) needs to be when running 16% on the NR .12 MITO WC Ceramic?
I had it apart for maintenance and also could not remember if I had added shims for running 25% or not.
Anyone know?
Thanks in advance.

Regards
BM

Does anyone know what the head clearance (squish) needs to be when running 16% on the NR .12 MITO WC Ceramic?
I had it apart for maintenance and also could not remember if I had added shims for running 25% or not.
Anyone know?
Thanks in advance.

Regards
BM

I haven't checked with solder, but I run .3 shims. I believe that's stock.

Yes. Nick. I have two 0.3 shims in at present. I also think that is stock in which case I believe that's the set up for 16% isn't it?
Could be wrong though, hence my question.
Regards
BM

Start out with .3. for 16%. And don't forget to use some of your "Man-Time" to race that beast!

Mito .12 bearing
 

Hi, can rear bearing 16604 be used a replacement for a 16608 in a mito .12A?

Novarossi Mephisto .21
 

Mistakable ran this engine (designed for 16%) on 25% fuel. Trying. To convert it to 25% fuel . Besides the button head what size shims does this engine run?

Hi, if you want to increase the nitro from 16% to 25% it should be enough to add 0,05mm of shims.
But of course you have to check on your engine the condition of the glow plug.
If the "spiral" of the glow plug will be pressed you have to add another shim (or a bigger one).
If the "spiral" of the glow plug will be streched you have to remove the shim.

Furthermore, I'm not sure (has to be verified) but in the box of Mephisto there should be a different "underhead" for changing nitro. One is for 25% and the other one is for 16%.

Please feel free to correct me if I'm wrong something.

Bye!

1st of all, asking this question one time is enough, no need and against most forum rules to do a dubble or even in your case a tripple post.

The engine is not designed for only 16%. I may asume if you did get the engine through official US channels you would have got a 25% configured engine.

You can replace the button for the advised 25% version or you can add (as I mentioned in the other topic) add a shim of 0.1mm.

We answered almost in the same time :)

I completely agree: I have a Mito .21 and the installed button is definitely for 25% of nitro.

Bye!

Well, since this forum is almost dead - I would think you would welcome any posts.

Small bearing margin
 

Hello guys,

I bougth new Mito 35 WCH. (It's my first on road in this price cattegory, i have another 5 off roads (RB, GRP, STS)

after breaking method, aprox 8 tanks (4 on stands - neutral, another tanks on street with 25%, 50%, 75% gas, and 2 tanks on track - easy mode, slow laps, rich mixture) i take off engine off car and i saw wet near small bearing of engine (7x19x5). I measured play (while everything is installed) between flywheel and engine 0,1 mm.

My question is: It's normal to have 0,1 mm play on "on roads" engines? I think no. So i ordered original nova bearing (art 17008). And play is same.
So I measure a crank, between places for bearings are "some dimension
I measure gap between bearings whoose are installed in engine, and difference is 0,1 mm. On crank is bigger.

Another question. axial force must be supported only in small bearing? Or in one direction with big bearing (Gap between crank and big bearing in axial direction)

Sorry for my english, i try do my best.

Thank you

Yes, there is a about 1mm of forward and back. There should be no axial play.

It is important when mounting the fly wheel to pull out the crankshaft and push the cone against the bearing and then caerfully mount the fly wheel w/o pushing on the crankshaft.