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Heather S added a new event 3 days ago

Challenge Air for Kids and Friends

Volunteer pilots fly kids with special needs to help build...

  • Saturday, 19 May 2018 08:30 AM
  • McKinney, Texas (KTKI)
Nik Cielo added a new event 3 days ago

Aircraft Spruce West - Super Sale

This is the time of year when we go all out by offering...

  • Saturday, 29 September 2018 07:00 AM
  • Aircraft Spruce & Specialty Co., 225 Airport Circle, Corona, CA 92880
Nik Cielo added a new event 3 days ago

Aircraft Spruce Canada - Super Sale

This is the time of year when we go all out by offering...

  • Saturday, 16 June 2018 08:00 AM
  • Aircraft Spruce Canada, 27 York Road, Brantford, ON N3T 6H2
Nik Cielo added a new event 3 days ago

Aircraft Spruce East - Super Sale

This is the time of year when we go all out by offering...

  • Saturday, 19 May 2018 08:00 AM
  • Aircraft Spruce & Specialty Co. East, 452 Dividend Drive, Peachtree City, GA 30269
Mark Brenberger replied to the topic 'C182P - Cabin heat on all the time' in the forum. 4 days ago

Thank you very much for your insight, Steve. Always appreciate your responses.

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STEVE ELLS replied to the topic 'Avcon 180 C/S prop Conv with 10599R oil cooler' in the forum. 4 days ago

Sorry it took time to reply. I doubt you're going to get a reply from Avcon. Bob and Barb Williams weren't replying to request for help years ago; I doubt that things have improved.
I don't have any reference to how your cooler is mounted, but if it's firewall mounted, you may be able to use a Cessna part to direct cooling air over the cooler.
When Cessna started putting Lycoming engines in its 172s (1968) it mounted the coolers on the firewall. Cooling air was picked off the aft cooling baffle on the copilot's side and ducted through SCAT tubing to part number 1756001-1, duct assembly.
There must be about a zillion of serviceable duct assemblies like this in salvage yards around the country. Texas Air Salvage has one for $595. There's also one on eBay for $410 from Beegles in Colorado.
Let me know what you work out.

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STEVE ELLS replied to the topic 'C182P - Cabin heat on all the time' in the forum. 4 days ago

I know at this point is may seem hard to believe, when the heat control knob is all the way forward, there shouldn't be any heat entering the cabin through the cabin heat system. However, heat may enter the cabin through leaks in the firewall.
The first item to check is whether movement of the control knob does actually move the diverter/flapper valve in the heat box on the firewall. It's possible that although you're moving the control knob, the control wire may be bound up, or bent or the flapper is valve is broken or malfunctioning.
The diverter/flapper valve is located on the copilot's side of the firewall; a orange flex tube (SCAT tube) connects the valve to what looks like the muffler.
The heated air enters an oblong aluminum plenum "box" that ls attached to the aft side of the firewall and extends all the way across the cabin from side to side.
The POH recommends opening the cabin air control to mix the "relatively" cold inlet air with the hot heater air in the plenum to better control the temperature of the heated air entering the cabin .
I always lube the shaft on the diverter/flapper valve during maintenance; sometimes when it's sticking that's all it takes to return it to normal smooth operation.
If you find the cabin heat diverter/flapper valve to work correctly, then you have two options. Open the cabin air to bring more air into the system, Or determine if there's a leak in the firewall. A visual inspection is required to find any firewall leaks.

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Mark Brenberger created a new topic ' C182P - Cabin heat on all the time' in the forum. 4 days ago

Even with the push/pull control pushed all the way in, getting blasted by heat from the cabin heater. Anyone ever experienced this and can anyone make any suggestions to fix? Thank you!

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Christopher Heinl replied to the topic 'Exhaust Valves' in the forum. 1 week ago

Thanks Steve. I’ve worked closely with my mechanic for the last three annuals, and he has tought me about the danger of the prop while doing the compression check. And the hangar/shop is off limits to any young’ens while maintence is being done.

Thanks,
Chris

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STEVE ELLS replied to the topic 'Exhaust Valves' in the forum. 1 week ago

Chris, Please take a few minutes with your mechanic to make sure you understand the dangers involved during compression testing. If you aren't competent at the procedure that prop can swing with purpose. Always stay clear of the prop arc when the cylinder is pressurized--it's no place for grandkids to be playing while you're testing compressions. Be safe

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Christopher Heinl replied to the topic 'Exhaust Valves' in the forum. 1 week ago

Hey Steve.

Yes my mechanic uses the master orifice compression tester. I may order one myself and check my compressions at oil change intervals. Can’t hurt, and since I’ll have my grandkids with me at times I want to assure my engine is healthy.

Again, many thanks for taking the time to address my concerns.

Chris

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STEVE ELLS replied to the topic 'Exhaust Valves' in the forum. 1 week ago

Hi,
Continental has published very definitive guidelines to determine the airworthiness of its cylinders. In order to follow the Continental guidelines, compression readings must be determined using a compression tester with a calibrated orifice. The old guidelines that are printed in AC 43.13-1--any cylinder with compressions lower than 60/80--. are worthless in determining airworthiness of a Continental cylinder.
The correct tool to use is a compression tester with a built in Master orifice. You can get one here: www.aircraftspruce.com/catalog/topages/a...2.php?clickkey=25770.
As long as your compressions are above the value shown when the air pressures are routed through the calibrated orifice, and the borescope inspection shows no hot spots on the exhaust valve, the cylinder is airworthy.

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Christopher Heinl replied to the topic 'Exhaust Valves' in the forum. 2 weeks ago

Thanks Steve. I appreciate your willingness to answer members questions. My engine shop did all the work you suggested, and they covered the repair. And $200 is cheep insurance so I bought the borescope you suggested. Hopefully I’ll have no more issues, but I already have compressions in the sixties in new cylinders. Wish me luck.
Thanks again, Chris.

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STEVE ELLS replied to the topic 'Exhaust Valves' in the forum. 2 weeks ago

I wish I had a good answer for you. The guide valve alignment must have been inaccurate when it came out of the Superior.
Did you call Superior to see if they would pay for the work and parts under warranty?
If the engine shop that replaced the parts ground the valve seat perpendicular to the guide axis, and ground the seat correctly you shouldn't have any more valve problems for a long time.
I suggest you get your mechanic to inspect the exhaust valves with a borescope to see if there's any evidence of poor seating and overheating on the other cylinders. If he doesn't have a borescope I recommend the Vividia VA 400 from Oasis Scientific. Cost is $200. Get it here: www.aircraftspruce.com/catalog/topages/vividia12-04891.php.
Let me know what you find.
Thanks

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Christopher Heinl created a new topic ' Exhaust Valves' in the forum. 2 weeks ago

I just had to have a new valve and valve guide installed in my just over 100hr since new Supperior Millennium SA47006L-A2 cylinder. Has anyone experienced a similar problem and is this a common issue with these cylinders?

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