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O540 weight

I weighed a carbureted parallel valve O540 and a fuel injected angle valve O540 Lycoming, I also weighed a 520 Continental and a GPU470. The parallel valve weighed 448LBS the angle valve weighed 473LBS and the 520 ironically weighed 520LBS and get this one the 470GPU weighed a whopping 570LBS. All motors had lightweight starters, alternators, flywheels and headers the 220GPU was the only one with an oil cooler. I used our lab scale that is certified and calibrated quarterly and then double checked it against our shipping scale. Both read within 3LBs. I also have a Lycoming operators manual that shows 16 different versions of O540’s that all weigh over 400LBS. Funny you mentioned this because I presently have a bet with a buddy that an O540 weighs over four hundred pounds. He swears they don’t he has several Internet sources claiming so but I go by what I see with my own two eyes on a scale that I know is calibrated. I have also weighed some Lycoming 160’s and 180’s.
 
The table I posted from Lycoming does not say what configuration the engines are in. I suspect the weights do not include accessories, and maybe not the flywheel. I'd guess they did not have an exhaust system on them.

Some of the 540's are turboed, and they are heavier.

Thanks for the information.

I am going to guess that your secret carb is a 600DP.

Jim
 
ANYONE LOOKING FOR A SUPERCHARGED 0480 WITH GEAR BOX NO ACCESSORIES BUT HAVE A PAIR OF MAGS TO GO WITH IT . ALSO HAVE LOG BOOK NEVER BEEN ON A BOAT.
 
I am without an airboat right now. I will go mostly solo so I just made an offer on an O540 (just the engine). However, I think your LS-1 conversion sounds like the best deal now. Either the 425 or the 550+.

Jim
 
Nope, I didn't ask this question to the Lycoming Yahoo group, but someone else asked for some information on these motors for his homebuilt RV airplane.

These weight are dry weights from Lycoming;
IO-540:
> T4A5D 412
> T4B5 418
> T4B5D 412
> T4C5D 424
> V4A5D 414
> W1A5D 400
> W3A5D 401
> W1A5 400
You have to watch the weight differences between the models, as some
of the engines may have different accessories installed as compared to
others.
Good Luck,
Mahlon

And I think these are supposed to be light weight models, don't know what was on them as far as accessories.
 
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