I ran into an IA at the airport while I was working on the airplane and he started peeking under the hood. He wasn't too happy with how the exhaust was mounted for my engine. The STC doesn't call out any specific instructions for mounting the exhaust, so he asked me to post here seeing if anyone had any experience with mounting the exhaust for the O-290-D.
Any input?
As usual thanks for all the help, this place has been a real gold mine of information.
O-290-D Exhaust
Forum rules
You must be a member of the Cessna 120-140 Association in order to post new topics, reply to existing topics, or search for information on this forum. Use the "Join" link in the red menu bar.
You must be a member of the Cessna 120-140 Association in order to post new topics, reply to existing topics, or search for information on this forum. Use the "Join" link in the red menu bar.
-
8359
- Posts: 229
- Joined: Tue Nov 27, 2018 10:53 pm
- Name: Tamer A
- Location: KSNA
- Aircraft Type: 1946 C120 O-290-D
- Occupation-Interests: Engineer
- Contact:
-
6183
- Posts: 353
- Joined: Tue May 01, 2018 7:00 am
- Name: Mike Smith
- Location: Florida
- Aircraft Type: 140A (2) 1949 & 1950
- Occupation-Interests: Retired aerial power line patrol pilot for Gulf Power Co. CFIA, CFII, MEI
120-140 Assoc. Florida Rep. N9633A & N9688A - Contact:
Re: O-290-D Exhaust
Yes, you can contact Reddoch Williams in Fort Walton Beach, FL and Tom Julian at Julian's Aircraft Repair in Holt, FL.
Reddoch has a 140 with the 0-290 installation. Tom did the conversion for Reddoch.
If you have an association membership book both Reddoch and Tom's numbers are listed.
Reddoch has a 140 with the 0-290 installation. Tom did the conversion for Reddoch.
If you have an association membership book both Reddoch and Tom's numbers are listed.
-
8340
- Posts: 27
- Joined: Sun Oct 14, 2018 11:31 pm
- Name: Joshua G
- Aircraft Type:
- Occupation-Interests:
- Contact:
Re: O-290-D Exhaust
Tamer, my exhaust isn't mounted to anything but the engine. The rest of the assembly just hangs out under the engine. No attach brackets or anything. I can take off the bottom cowling if you need better photos but here is some from the top and bottom.
-
8359
- Posts: 229
- Joined: Tue Nov 27, 2018 10:53 pm
- Name: Tamer A
- Location: KSNA
- Aircraft Type: 1946 C120 O-290-D
- Occupation-Interests: Engineer
- Contact:
Re: O-290-D Exhaust
I sent some photos of my exhaust to Custom Aircraft Parts in El Cajon, CA. They came highly recommended from my IA. They recommend a crossover exhaust system for the lycoming. He sent me photos of a 120 (O320) with their crossover system. Just curious if that member is on here? Wondering how much louder it is without mufflers. He said I can do with or without mufflers. Losing a few more pounds on the nose would be nice if it's not significantly louder.
Anyone know the owner of this aircraft?
Anyone know the owner of this aircraft?
-
8340
- Posts: 27
- Joined: Sun Oct 14, 2018 11:31 pm
- Name: Joshua G
- Aircraft Type:
- Occupation-Interests:
- Contact:
Re: O-290-D Exhaust
O-320!!! WANT! That thing has got to be silly. I'm curious about our 50 hour exhaust AD and if that exhaust system will dispose of it. Our company got an AMOC for a 50 hours exhaust AD on the TSIO-520 by installing Knisley exhaust. At $1800 it had better have no AD, make me 10 knots faster, and weight 20 pounds less.
Joshua
Joshua
-
6643
- Posts: 2456
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: O-290-D Exhaust
Do you mean the 25 hour exhaust AD? If so, it only applies to the "pancake" mufflers originally installed on '47 and '48 planes. If you have an O-290 you don't have them any longer.
John Cooper
www.skyportservices.net
www.skyportservices.net
-
8340
- Posts: 27
- Joined: Sun Oct 14, 2018 11:31 pm
- Name: Joshua G
- Aircraft Type:
- Occupation-Interests:
- Contact:
Re: O-290-D Exhaust
No, the McKenzie STC for the O-290-D2 installation has AD 62-24-03. 50 hour intervals.
-
6643
- Posts: 2456
- Joined: Tue May 01, 2018 7:00 am
- Name: John C
- Location: KLCI, NH
- Aircraft Type: 1946 C140/C90
- Occupation-Interests: A&P, semi-retired
- Contact:
Re: O-290-D Exhaust
Ah! Lucky you. No mention of specific exhaust systems (or a particular engine, for that matter) and no terminating action. I think you're stuck with it unless you can get the FAA to approve the new exhaust as a terminating action (or the exhaust manufacturer has already done that.)
John Cooper
www.skyportservices.net
www.skyportservices.net
-
8340
- Posts: 27
- Joined: Sun Oct 14, 2018 11:31 pm
- Name: Joshua G
- Aircraft Type:
- Occupation-Interests:
- Contact:
Re: O-290-D Exhaust
Exactly my hope. If the maufacturer hasn't accomplished that, maybe I can get an alternate method of compliance from the FAA.
Joshua
Joshua
-
VIP337
- Posts: 31
- Joined: Tue May 01, 2018 7:00 am
- Name: Bill Rhoades
- Location: KFBL MN
- Aircraft Type: C-120
- Occupation-Interests: nwa Retired
- Contact:
Re: O-290-D Exhaust
Joshua,
I've gotten two AMOCs from the FAA. If you have a FSDO that will work with you it is not all that hard. I got the approval to remove ( or not install) the primer line shielding on the firewall for the 1946 aircraft that have the pancake and 150 exhaust.
Bil
I've gotten two AMOCs from the FAA. If you have a FSDO that will work with you it is not all that hard. I got the approval to remove ( or not install) the primer line shielding on the firewall for the 1946 aircraft that have the pancake and 150 exhaust.
Bil