Firewall Forward at 1450 Hours

[Beancounter]

Paul
I hear you talking about parts that have failed others that look like new, and yet all I can focus on are those zip ties. I can't believe that after 6.5 years your engine hasn't fallen off! Sorry..sometimes I can be a SD.

[Flybuddy2]

My next door neighbor has an RV6 with a 180 lyc. New engine, newly installed about 7 months ago. With less than 120 hrs, here's pics of the inside of 2 of his new ECI cyclinders where the nickel came off and trashed the engine. ECI has had them back for a while and so far he's just getting a runaround.

[JonJay]

Originally Posted by az_gila

Paul,

Consider adding a 1/8 or so stiffener inside the flanges like the Grumman design.



It's probably easier than hacking washers and should be better support.

I used 3/4" angle. Probably overkill but you are right, it was really easy.

[az_gila]

Originally Posted by JonJay

I used 3/4" angle. Probably overkill but you are right, it was really easy.

The drawing doesn't really show it, but the stiffeners are 1/8 alum., so they do have some "meat" in them...

The other thing not shown is that the outer flange bolts via nutplates into a 4130 angle where the aft and side baffles are joined, so the stiffener is actually sandwiching the soft flange between two fairly robust members.

[Ironflight]

Originally Posted by Beancounter

Paul
I hear you talking about parts that have failed others that look like new, and yet all I can focus on are those zip ties. I can't believe that after 6.5 years your engine hasn't fallen off! Sorry..sometimes I can be a SD.

I know - shocking, isn't it....

[erich weaver]

Originally Posted by Flybuddy2

My next door neighbor has an RV6 with a 180 lyc. New engine, newly installed about 7 months ago. With less than 120 hrs, here's pics of the inside of 2 of his new ECI cyclinders where the nickel came off and trashed the engine. ECI has had them back for a while and so far he's just getting a runaround.

Man, thats nasty looking. What symptoms did he experience when this happened? Loss of compression and burning oil I assume?
Why the heck hasnt ECI forked over some new cylinders on warranty? Not sure what the delay/debate would be about. Hope he stays on them.

erich

[chaskuss]

Originally Posted by Ironflight

snipped
3) Speaking of oil coolers ? mine is dead. Or I should say, the flanges are dead ? cracked at the mounting bolts. They weren?t cracked (that I could tell) at the last annual. I talked to Pacific Coolers, and they said that the cost of repair would be the same as buying a new one (about $260) ? but they did have some used, zero-timed Niagara?s for sale for $200 outright! I have a new one on the way.
snipped
Paul

Paul,
Two ideas. If you are married to the baffle mount oil cooler, forget fancy alloys, the solution is called NEVERSEIZE. I see that problem all the time in my day job. Try removing the bolts which secure a motor mount to a 10+ year old alloy engine. Same thing happens. I always coat the shank of those bolts with NeverSeize and it prevents the galvanic corrosion.

Second idea. Do away with the vibration and heat that are transferred into a baffle mounted oil cooler. Keep the cooler in the same general vicinity, but mount it [with Adel clamps] to the engine mount. See photos of Gary's setup below.







Hope these photos give you some ideas to ponder. I tried to find a thread about doing this, but could not find it. I KNOW it exists, but the search engine failed me this time. I hope these two ideas help.

Charlie

[Flybuddy2]

Originally Posted by erich weaver

Man, thats nasty looking. What symptoms did he experience when this happened? Loss of compression and burning oil I assume?
Why the heck hasnt ECI forked over some new cylinders on warranty? Not sure what the delay/debate would be about. Hope he stays on them.

erich

It was burning oil and when he pulled on the prop it was obviously not doing well on compression (20 and 40 on those 2 cycls). Case is apart now. Pistons sidewalls are scuffed as is cam, crank and bearings. Looking ugly. Feel bad because he flew 400+ hours the prior 2 years on a 4 cyl Subaru with no real problems (other than dirt slow). We talked him into a "real" engine...oops.

[Rhino889]

Paul,

I see the reason why your compression dropped!

You have Zip-ties on your engine mount!

Don't you know that Zip-ties on engine mounts have caused entire wings to fall from aircraft!?

Sorry... couldn't help myself

Next time I'll just go to the primer thread for my fun...

Sorry about the FWF OH,

Scott

[Rhino889]

Originally Posted by Beancounter

Paul
I hear you talking about parts that have failed others that look like new, and yet all I can focus on are those zip ties. I can't believe that after 6.5 years your engine hasn't fallen off! Sorry..sometimes I can be a SD.

Ahhhhh! I wasn't the first!

Dang~