Bret,smithhb said:Remember: You will be needing to plumb a fuel/vapor return line in your tanks if you are planning on going with this engine (IO, that is).
captainron said:Gil, it also has the thicker prop flange of the 360 instead of the 320. A good trade-off?
captainron said:Seems like just a de-stroked 360; shouldn't cause any unusual problems or concerns. I think they rate it for 185hp in the IO model.
ECI had the engine at Van's Homecoming this year. I talked with the ECI rep about it. It is a different crank than the O-320 and O-360 with a stroke between the two. I was told that the 340 uses the 320 cylinders and the 150 HP 320 pistons so that it has a 9:1 compression ratio.az_gila said:Ron,
It wasn't a concern... it was a question of uniqueness.
O-360 and O-320 cranks exist everywhere.... They have been in production for donkey's years....
Is this a unique crank that is made ONLY for the O-340??
gil in Tucson
I like the roller cam and when talking to ECI, he pointed out that it was not proven. It is a solution to a problem that is not wide spread. I agree that the cam / valve tappet issue is only an issue on engines that are not run and stored in a damp environment.captainron said:Gary, Thanks for all that good info on this engine. Any opinions on the roller / non-roller cam issue? I'm trying to decide between the ECI and Superior engines.
The ECI rep that was at Van's Homecoming said that I could buy it for my engine.Shine'r said:Gary did he say you could buy the crank by itself? I ask about that at oshkosh and was told you can't buy the crank alone. I'd like to "rebuild" my narrow deck also into a 340 if I can get the crank. Thanks for the info
Shine'r
Sunny warm Pittsburgh Pa.
xl1200r said:SO...waht does an IOX-340-S kit engine cost? I can't find a price anywhere! And what else would you need to buy to make it complete?
smithhb said:I spoke with Richard Fowler a couple of weeks ago and here was his reply:
"The IOX-340 is only $500.00 more than the IOX-320. I'll keep you informed of the performance figures from ECi. Your cost will be $23,800.00 for the IOX-340-Stroker."
Hope this helps...
az_gila said:Since the stroke of this engine is in-between the 320 and 360, does this mean it has a uique crankshaft that isn't used on any other models?
If so, isn't this somewhat of a negative?
gil in Tucson
captainron said:Gary, Thanks for all that good info on this engine. Any opinions on the roller / non-roller cam issue? I'm trying to decide between the ECI and Superior engines.
Shine'r said:Gary did he say you could buy the crank by itself? I ask about that at oshkosh and was told you can't buy the crank alone. I'd like to "rebuild" my narrow deck also into a 340 if I can get the crank. Thanks for the info
Shine'r
Sunny warm Pittsburgh Pa.
az_gila said:Since the stroke of this engine is in-between the 320 and 360, does this mean it has a uique crankshaft that isn't used on any other models?
If so, isn't this somewhat of a negative?
gil in Tucson
chaskuss said:Gil,
My discussions with the ECI folks at Sun N' Fun this past April included my question as to why they brought back the 340 (Lycoming also produced a 340, but they are rare). I was told that the 320/360 LancAir guys are having problems with the 360 engines contacting the cowl. It seems that some owners have found that under high loads (acro ??) the valve covers of the 360 engines will rub on their cowlings. The 340 engine is 1/2" narrower than the 360 (and 1/2" wider than the 320). The extra 1/4" clearance on each side cures this contact problem.
Charlie Kuss
If you go look at post #17 you will find the answer. It is the same cylinder as the 320.xl1200r said:Well, according to this, it would seem the 340 uses unique cylinders as well. Kind of conflicts with the report that they use the same cylinders as a 320 if the thing is 1/2" wider than a 320.
RV6_flyer said:If you go look at post #17 you will find the answer. It is the same cylinder as the 320.
The length width height and weight for the 320 340 and 360 can be found on the ECI web site.