Bummed out
 

So my Orion Alpha has been giving me fits lately. It is part number ORI80647. Has about 2 gallons on it. I have the Orion turbo plug number 5 in it. I checked the clutch and clutch bearings. The motor fires up and will idle on the starter box. You can give it some gas and it responds fine. Once it is warmed up on the box and you give it a handful of throttle it bogs down and flames out. I have reset the carb back to flush on the needles and started all over with no luck.

I have leaned it out and it may at times work okay for a few minutes but eventually flames out when you give it a handful of throttle. I did notice that if I do this on the starter box and leave the igniter on it the car will stay running.

I have even tried an OS P3 plug and no luck.

Spent 2 hours on it yesterday and got it to respond fine on the box but could not drive it since it was raining. I went to start it today and it fired right up but the same issue started all over again. Any thoughts?

Thanks and sorry for the long read.

What fuel % do you run, is it old? Are your fuel tank/line old? Since you have checked the clutch and bearings i assume you know how it should be.

Have you recharged your glow igniter and the plugs are new?

How is the o-ring for low speed needle, check the needle if its need replace? Have you sealed the engine?

Im far from expert, but these are my tips. Comeback if you still have problems.

MTE
 

Hey guys. I have a couple of the older Orion MTE motors. Does anyone out there have any experience with this motor. Seems like I see a lot of people selling them and buying something else. How do they compare to the newest orion motors. I know this motor was a power house motor at 2.9 hp.

One more thing..this motor I'm running now is the second Orion MTE and I had. Both motors seem to run on the cold side like 180-190..sometimes even colder, like 150..when I was breaking in the motor, I had to keep a heat gun the motor the whole time...if I lean to 210 or 220 I'm way too lean, at least it sounds too lean on the track. I don't seem to get a lot of smoke either on the track.So, I can't tune by temp or smoke..all I have to tune with is sound.

I read somewhere where a guy tuned his and added a 10mm head shim..seems to me that would make it run even a colder...I'm thinking about removing at least one of the copper shims. There's a 20mm and a 15mm...so I'll probably start with the 15mm.

Any help would be so greatfully appreciated!

Hi Racer8ight, i dont think you need a shim on your engine, unless your using 30% or more Nitro. About temp, i cant really tell what the engine likes, its different from engine to engine, even if its the SAME engine! But 150F is to low IMO.

I do have experience with engines able to run with air leak, but as you describe after the engine gets hot it does go lean and im not capable of take out serious power. Solution: seal the engine, that worked for me at least.

I only had 3 run on it before my Cooling had needed to be replaced. I was to eager with the heat gun ( i think). But i had no problem keep engine around 200F / 90C first and secound run.

So again, i would like someone who had a leak at glow plug hole give me feedback on what they suspect make it leak!

Thank you

Both of my MTE 5 ports are sealed completely. I do run 30%..I'm thinking of removing a shim and raising the compression some to get the temps up just a tad. I might need to check my temp gauge for for proper temp readings.

Hey Tom, this is David Backer. I re-started you a couple of times before your main b/c of flameouts. Initially, it sounded fat on the bottom (would not clear out through the RPM range), but it could have been too cold. It was later in the day and the temps went down a bit.

Regardless, there are a lot of good tuners (Jason Norwood, Donald and I know a bit...) bring it by and we'll take care of it. Once it had a chance to warm up, it sounded and ran real good...

..............
 

I run Byrons Gen2 30% nitro. I even opened a new bottle to take bad fuel out of the equation. Fuel lines are new also. Car started up fine today and I Was able to make some passes on the street and it ran okay. I went to adjust the idle just an hour and the whole process started over and over again. Car starts up and idles fine but flames out when I grab a handful of throttle.

Maybe a bad front bearing?

Maybe HSN is too rich?? Or LSN too lean??

Hey David, thanks a million for your help on Saturday. I went out again on Sunday to see if I could figure out what was going on with my motor...turns out the head was loose. Only three bolts holding it on and they were turned out a few mm... That explains why I was having problems tuning it all day long. again thanks for your help Saturday. I was so frustrated after the race, I just packed up and left without thanking you first...sorry about that.

One more thing David...after I tightened the head back down it ran really good. I even cleared the triple a few times and turned a few low 24 sec laps. For me that's good, anyway, my biggest concern is with it running cold, in the 150 to 190f rang. I've herd people say it should be running in the 225 to 250f range. If I lean it to those temps, which i only did once, it's danger lean to the point of blowing plugs...I have mentioned the problem to Donald, Mark, and a couple other guys and they all seemed as confused as I am. Since it has been the same issue with both motors, my guess is to check the temps with a new gauge. The gauge might be dirty and giving me a false reading.

24's are awesome...

As for temps, if you are clearing the triple, I'd say you are good to go... Temps are one of the things you can use to make sure your motor is "right" but if you have smoke, power, sound, etc... I'd say leave it... Like I said, once we got it "warm" it was running super nice...

I had a Werks B5 that ran perfect at 195-200f. I was foolish enough to buy an Exergen temp gun, so we'll shoot it w/ that in a couple of weeks (out of town this weekend for a wedding)...

No worries on the help, that's the best part of Awesome - lots of folks willing to help.

Why was the team orion nitro star thing that was on neobuggy never announced?

Any ideas?

Orion just labels them as 7mm front and 14.2mm rear

I'm looking into a CRF 5 port. Is it goig to be a good motor for me. I am coming from O.S