Bill, you must not have read my note!
Thanks. Will look at mailbox! Bill
I also have about 100 hours on mine and they are holding up fine.
However, they are very fiddly to install properly. They are so soft that it's difficult to keep the tube centered in the counterbore of the tube retainer, and a little bit too much torque and they extrude into the port. Before you discard that last statement I'd like to qualify it by saying I'm an A&P and have been maintaining aircraft engines my entire adult life - they are extremely sensitive to torque and position. The required torque is far lighter than the norm for this size fastener.
I'd like to see them made of a higher durometer material or perhaps a fabric impregnated silicone (like cowl baffle seal) to keep it from extruding into the port.
.... they are extremely sensitive to torque and position. The required torque is far lighter than the norm for this size fastener.
I used locking nuts so the torque wasn't necessary.
I need to replace the intake gaskets on two of my tubes...
I found this part on Aircraft Spruce but it doesn't say what engine it's for...
"SUPERIOR SA629925 GASKET, INTAKE MANIFOLD"
I have an o-360, is this the gasket I need?
tks
I have 500 hours on my engine.... I assume it is a good idea to change the rubber hose used to attach the intake tubes to the sump. Is there any best products for this or just standard Lycomoing part?
Apparently, nobody has that spec. It's not in the Lycoming table of limits (my old version, anyway). I used 96 in.lb. on those nuts....anyone have that spec?
...Everyone that installed Rik's gaskets still happy with them despite the apparent tendency to creep and extrude?...
Id be happy if they didnt creep and extrude. They work for the most part, but are not "the" solution, IMHO.
If the Lycoming retainer could be machined with an O ring groove at the head interface and also at the ID of the intake pipe (that is, between the retainer and intake pipe) that would likely be ideal. These O rings should be common, hardware store items available everywhere for pennies, too (as long as I'm dreaming).
Hardware store o-rings won't take 400F cylinder temps. Silicone o-rings will.
I can't visualize how you would get an o-ring gland between the intake pipe and the retainer, but its been a while since I've looked at them. It would have to go on the back side of the flared flange, right?...
I say again:
Does anyone have the torque spec for the nuts attaching the inlet tubes???
Thanks
If they are not listed as special torque in the overhaul manual they default to the Lycoming "standard" torques.
They are not listed under special torques...