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  #21  
Old 03-10-2014, 08:30 PM
Toobuilder's Avatar
Toobuilder Toobuilder is offline
 
Join Date: Jul 2009
Location: Mojave
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Default Just thinking out loud...

I've been thinking about the silicone hoses most often seen in turbo plumbing on cars. The stuff comes in all kinds of sizes (and colors)... Anybody ever used them as intake tube couplers on the Lycomings? In theory, they should remain pliable longer than the rubber based stock stuff.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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  #22  
Old 03-11-2014, 03:26 AM
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RV10inOz RV10inOz is offline
 
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Location: Brisbane Qld. Aust.
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Default

Vlad.....you confirm my thoughts.

A good reason to do a GAMI lean test high and low. It shows up the leaks.

Did you get some of the Superior gaskets?
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  #23  
Old 10-17-2019, 12:11 PM
devgru38 devgru38 is offline
 
Join Date: Apr 2019
Location: El Segundo, CA
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Default

Hate to bump a super-old thread, but figured this was the right place to get the information listed.

Was wondering if anyone could provide any guidance in replacing these intake gaskets and couplers...

Is it as simple as:
1. Remove flange bolts & intake coupler
2. Clean gasket surfaces, replace coupler
3. Bolt back up?

Any torque values for the tube-flange-to-head fasteners?

Thanks!
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  #24  
Old 10-17-2019, 04:46 PM
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Bill Boyd Bill Boyd is offline
 
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Location: Landing field "12VA"
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Default My guidance:

Replace that mess with SDS Aero O-ring seal intake flanges. Ross will hook you up!
http://sdsefi.com/sdsaero.htm
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  #25  
Old 10-17-2019, 05:39 PM
devgru38 devgru38 is offline
 
Join Date: Apr 2019
Location: El Segundo, CA
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Default

Quote:
Originally Posted by Bill Boyd View Post
Replace that mess with SDS Aero O-ring seal intake flanges. Ross will hook you up!
http://sdsefi.com/sdsaero.htm
Looks like a smart design, but do need to get the plane in the air this weekend, and only have stock gaskets on hand. Still looking for installation torque if anyone has one...
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  #26  
Old 10-17-2019, 06:49 PM
Fracrat Fracrat is offline
 
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Location: Loganville ga
Posts: 97
Default Intake torque

Pretty sure it?s 100? lbs. info is for 0-320.
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  #27  
Old 10-17-2019, 07:13 PM
devgru38 devgru38 is offline
 
Join Date: Apr 2019
Location: El Segundo, CA
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Default

Found it!

For future reference: O-320 Intake flange nut torque is 96in-lb (basically 100) per Lycoming manual.

Any other tricks/tips to get these off/on? I don't need any special tools? Just remove nuts, replace gasket, bolt back on?

Thanks!
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  #28  
Old 10-17-2019, 07:19 PM
Toobuilder's Avatar
Toobuilder Toobuilder is offline
 
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Location: Mojave
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Default

The intakes don't have nuts, they have bolts. The exhaust has nuts (on studs).

Remove bolts, scrape old gasket junk off, ensure tube retainers are not bowed, Install new gaskets, ensure tube is centered in retainer, tighten to spec.

Next step - buy the SDS intake kit so it's on hand when you need to replace the next cracked intake gasket (and it WILL happen).
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C

Last edited by Toobuilder : 10-17-2019 at 07:21 PM.
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  #29  
Old 10-18-2019, 07:48 AM
chaskuss chaskuss is offline
 
Join Date: Mar 2005
Location: SE Florida
Posts: 1,499
Default The red Rubber intake connectors are available through Continental

Quote:
Originally Posted by RV10inOz View Post
snipped

If it helps the red SUPERIOR gaskets seem to last longer.

Glad you are onto these things!
It appears that the red high temp rubber connectors that David & Michael mentioned are available through Continental. Are used on their Titan experimental engines. You can see some photographs of them on the recent thread linked below.

http://www.vansairforce.com/communit...d.php?t=169487

The close proximity of your exhaust pipes to those rubber connectors sure isn't doing them any favor. Is there any room to possibly install a heat shield between those parts?

Charlie

Last edited by chaskuss : 10-18-2019 at 07:55 AM. Reason: Added the last paragraph
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