Jump to content

Fuel Injection on O-235 L2C?

Sandy Cleland

Recommended Posts

I have a Lycoming 0-235 L2C with the Ellison Throttle body. I am seeing a large difference between EGTs. (150-200 degrees) Yes, I have checked the probes for accuracy and looked for leaks. I'm told the fuel atomization is poor on the 0-235 to begin with. Would like to know if anyone has an "IO-235" flying. What the options are, reliability and costs might be in converting to fuel injection.

Link to comment
Share on other sites

If it was me, I would stick with the Ellison and take the hit on EGTs.


If you did put in fuel injection (I assume you are talking about mechanical, not electronic injection) you would still have pretty much the same problem you've got now since the O-235 doesn't distribute AIR evenly, and mechanical injection systems DO distribute fuel evenly. This would result in the same large variations in EGT that you've got now, and there's very damned little you can do about it.


Electronic fuel injection OTOH can be programmed to distribute fuel just as unevenly as Lycosaurus distributes air. But you would need 40 psi electric fuel pumps and all the attendant goodies. For what? You still have a Lycosaurus.


If you want even EGTs and smooth, even power strokes, get a Subaru or Mazda. There's no other way IMO.


Just a theory .... Jim S.

...Destiny's Plaything...

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information