Kyosho X312T engine
 

I just got the X312T engine and i am wondering if you have to heat the engine up with a heat gun/hair dryer before starting it for the first few tanks.
It says that because of the unique CRF technology you only need to run it in for 2-4 tanks. Do i still need to heat it before starting?

I would always recommend to pre-heat an engine before starting it up. Be it CRF, Picco or Novarossi. It helps the rod maintain its life since your reducing the stresses created on it.

Is it normal if when i carefully slowly turn the cranksharft it gets hard when the piston is at the top of the exhaust port.? But i didn't turn it any further to evoid damage.

You don't need to heat up the engine before breaking it in.

Just run it rich for a couple of tanks and make it leaner so that it starts to have power after 3-4 tanks. After that, start fine tuning to get max power.

The pinch at the top is normal.

But with this one it gets hard when the top of the piston is level with the top of the exhaust port. won't it damage it?

The pinch is always at the top it's normal.

i have 2 of these engines , awesome work of art and power for price. my advise is just follow the manual. no need to pre heat the engine what so ever . and if u ever open the engine up dont try to push ur piston trough the liner . it will go right threw . when these engine are cold they seem not to have any compression or very less. but that's what special about these little power packs . never let the engine run over 120 degree cel. and the gearing on this engine are set a bit differently .
cheers alex

hi, run my X312T for the 1st time last Sunday, it was fantastic. This is Kyosho version with goldish head. Can't compare much powerwise but based on what I've seen our local track, comparing, I wasn't any slower. This engine seemed so easy to use, let's see how long it will last.. Thumbs up so far!

Thanks for all the help guys!

What glow plugs are you using?

i ran in my engine last sunday at moorebank and it was great. i am currently using a kyosho 6 turbo plug. the one that comes with the engine. it seemed to run well. but i can't give you a solid answer because i have only run 3 tanks.

I think the one that comes with the engine is an Orion REV plug (medium #6)
I've been using the cold REV plug lately with 16% nitro

X312T Performance
 

So how are these engines performing? I really like the look of them and am seriously considering this as my next engine.

Let the feedback roll in

Opinions anyone?

engine
 

lots of rev's in this motor , need perfect clutch setting and under gearing to get power to the ground. if your running on a small track i wouldnt get this if ur running on a big track go for it. there are better promising engines for the few extra$. each to there own.

The only reason not to go for that engine is that it isn't produced anymore so parts will be difficult to find. If you can find the right setup in clutch and gearing it will run fast,

bartz rc part have them on special in sydney and lots of spare.

The price at Bartz is what has me interested:nod:

Carb Issues
 

I found that an OS carb is a perfect fit and will make the crf an easy to tune engine. I put a carb from an 18 tz on mine and it's fast but not legal if you must run a carb with a 5.5 opening. Maybe a carb from a speed 12 would work also.;)

manpipe
 

What pipe mani combo is good for these engines if you can't find the CRF pipe? Anything tuned for high RPM?

skyline v12 plus is very torquey pipe for crf . but makes the engine run a bit hotter .

Thanks for all the info guys.

i have been running this engine for about 6 months and it is awesome!

So easy to tune!

Its FAST!

Reliable!


Best engine i've ever had.:)

Oh and if anyone has some info on clutch set up for this engine i would like to hear it.

thanks.

go here!
you will find everything you need!
http://www.rctech.net/forum/exclusiv...o-results.html

Hi, I'm not a racer (yet) in this class but I've been using the 3D clutch from Kyosho with my RRR and seems to work perfectly fine. Thanks

And you are using the Kyosho CRF X312T engine?

I found the veg clutch weights,shoe and spring works well But I think they only fit kyosho clutches

So far yes. Now also have the newer Orion CRF .12 waiting for the next season 2010 with RRR 2D clutch.

Cool.

how much clutch gap are you using?

Because i am hearing a lot of 0.5mm clutch gaps with these engines.

~1.1 - 1.2 mm in the clutch nut. ~0.5mm play in the end of the cranck (the locking screw).

pistonhead like i said before.go to that link.it has many many things to look.
a lot of information!
from clutch settings,gearing,shimming,needle settings.
just everything.

ok man

http://rcmarket.com.hk/images/orion_crf80600.jpg

Beauty!

where are you guys getting the glowplug for this engine.

the CRF88836 X312T CRF turbo X-plug No.6

Don't know where to get it from.

Young Pistonhead,

use O.S. P6 or P7, i will have some with me this sunday.

Just one example
http://www.rcmart.com/catalog/rc-glo...6-p-20152.html

thanks, i didn't know the os would fit

i can get the OS P6 turbo plugs from RC hobbies near me.

Cheers.

can i use
Team Orion 06-T Glow Plug Turbo Medium
[88811]

http://www.rchobbies.com.au/store/po...c47822ec1e0175

how hot are you guys running this engine

Anyone had a crank pin failure on these? I broke my pin today..

i have, conrod punched a hole in the case also