Lycoming IO 540 J4a5

[Randy Means]

I am considering installing a IO 540 J4A5 250 hp Lycoming out of a piper twin with 450 hours on it. . I can't see any reason this wouldn't mount up properly can you?

 

[tacchi88]

IO540 J

As long as it is a straight valve and the FI mounted on the sump bottom, don't see why not. Mine is a B4B5 with FI.
TT
RV10
N968TP

 

[10_Dreamer]

I'm wanting to do the same. I found a B4b5 that was upgraded to 250hp from the stock 235hp. Is this just a compression ratio upgrade? Is there anything else I'll need to make this fit the 10?
Tacchi88, isn't this motor carburated? What FI system did you put on it?
Thanks,
Wyatt
Somewhere between total depression and complete satisfaction in the building process...