5 is hotter than 6 in Orion plugs. Still wouldn't hurt to give one a shot. I've always had good luck with the 6's but nowhere near that high of altitude also maybe try adding a shim

Your problem is the high altitude. Air is (very) thin there so you need to raise your compession by removing some head shims.
The thin air also lowers your power output (less oxigen = lesser combustion = less power) thats why a lot of people run higher nitro content at high altitude (40% for instance). A combination of both can result in detonation when going too far so don't take it to the max. I'd start with removing some shims. How much you can remove i don't know but i'm sure other people who run at high altitude can tell you more about that. This was also explained already in the Orion Alpha 3 port thread btw.

id suggest u start by using 40 percent fuel if available .. if not available .. u can try n start by removing the thinnest possible head shim .. one at a tym .. and try using #5 plug ... im at 3500ft (not much tho)...
:)

Glow Plugs
 

No 40% fuel locally, would have to special order it.

The Orion Proglow plugs come in 5, 6 and 7 so I have ordered some 7's to try.
The Orion site recommended the 6 for this engine but I'm sure they did not consider a Mile high application.
I did the break-in on a #6 but it failed just after leaning the motor for the initial performance tune.
I have heard of endurance plugs for long races with heavier filaments, but I don't want to "band-aid" this problem with expensive plugs.
Right now I have .6mm x3 shims in place in the Alpha (Factory), but we run .5mm on our stock LOSI 350's. We've never have had this problem with the stock motors at this altitude, they seem to run great.
What are your feelings about the .6mm ? should I remove one .1 shim along with a colder plug?

I have a Team Orion 5 port discovery engine? I have a gallon on mine, running 30% Odonnell speed blend. I am using the 5 plug. I keep leaning it out and it will run good for a tank or two then it is rich again. Seems to rich on top more than bottom. I am in North Florida. I am using a Dynomite 053 pipe. Any ideas?

Question on the Orion 2013 pipe. Is there a difference between the Orion and Werks 2013 pipes? I have the Orion on my Losi Nitrotec and it runs great. Just curious about the 2 pipes.

i think they are the same .. efra number 2013 n both made in lm factory in italy ..

try using a hotter plug like no.5 instead of cold plug like no.7 ... and if yu have head clearence in d engine try removing one .1 shim .. :)

They are essentially the same..

ok thanks guys

We tested all sorts of stuff in Colorado Springs last year, and we didn't have to do anything to the head shimming to get the engines to run properly. We ran 40% nitro, and if you are at 8500 feet, I would say without a doubt you need 40% nitro. All the other stuff we tried like changing the head clearance, we put back to the factory settings. We didn't have any problems with plug life..

Anyone want a 5 port Team Orion? I can't get this thing to run consistant. It keeps running rich and can't get ant help with it. I think I am going back to Novarossi.

I want it :)

I've had similar headaches myself.. Keep at it it'll come around, and when it does you'll be grinning..

But if your serious about letting it go hit me up..

Hi pit pop at how many gallons does the ck ed needs to change connecting rod?