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Engine weight difference?

boearl

Well Known Member
Patron
Anyone know the difference in weight of the XIO-360-M1B and the XIO-360-A1B6? I heard the 200hp angle valve weighs as much as 27 lbs more than the 180hp version. Is that so? I?ve not found any documentation.

Regards,
Ken
 
Just spoke with Lycoming tech support: the 180hp parallel valve dry weight is 300lbs. The 200hp angel valve 200hp dry weight is 330lbs. The 200hp has heavier heads (about 5lbs each) and a heavier counterweight crank. Holey Moley��.
 
Yep.

I don't remember the pin point numbers now, but yes that sounds about right. 30-35 Lbs. more, I would think is in the ball park. The bigger heads and valves add more along with the crank damp weights and that mass. The angle valve counter weighted configuration is heavier than the P valve configuration. We built a hollow crank P valve IO-360 for just that reason, so as to have a better power to weight ratio. There are spec sheets around that will give you the dry weight for the two. You may just need to go to the Titan data page and look at it there. Hope this helps, yours, R.E.A. III # 80888


P.S. you can get the P valve hollow crank configuration in up to 190 Hp. in the 360 basic engine stile that is the most made variant out there. We push 195 with ours and don't have the extra weight.
 
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Anyone know the difference in weight of the XIO-360-M1B and the XIO-360-A1B6? I heard the 200hp angle valve weighs as much as 27 lbs more than the 180hp version. Is that so? I’ve not found any documentation.

Regards,
Ken

The info can be found in the TCDS (Type Certificate Data Sheet) of the certificated version of the engine.

The IO-360-M1B TCDS is 1E10.

Weight is found in Note 7 as 279 pounds.

The IO-360-A1B6 TCDS is also 1E10.

Weight is also found in Note 7 as 302 pounds.

That is a lot lighter than what I thought the answer would be. 23 pounds is about 1/2 what I thought the difference would be.
 
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Thanks guys. I’m leaning toward the Van’s recommended 180 hp. It more closely fits the mission and parameters I set when I decided to build a 7A.
 
IO360L2A

Mine may be the lightest 360 around.....the same engine running in 172R ans S models. 160HP @ 2400 and 180HP at 2700 rpm. So planning for a Catto Prop or Sensinich composite adjustable for 2700 rpm.

278 pounds dry empty weight.
 
Thanks guys. I?m leaning toward the Van?s recommended 180 hp. It more closely fits the mission and parameters I set when I decided to build a 7A.

If you want to build a light airplane, the Tip-Up Taildragger is the lightest combination.
 
If you want to build a light airplane, the Tip-Up Taildragger is the lightest combination.

Don't forget for light weight: fancy paint job, fancy panel (IFR), fancy upholstery, night lighting.... Prop - wood fixed pitch is lightest. Engine- O-320 would yeild lightest weight.

Weight of TIP vs SLIDE, as well as the gear Config is small compared to all of the above. However it make sense TIP + TG is lighter. I don't think weight should guide those choices.

PS Remember to diet and lose LB's off the mid section (note to self). Seriously it makes a difference.
 
You?ll be unhappy if you ever need to buy a angle valve cylinder, they?re more than twice as much and only available from lycoming.
 
Everything is a trade off when it comes to aviation. Engine/prop combo's each have advantages and disadvantages. I look at my flying using mission requirements. I have an 8 with IO360/CS, it's a good all round combo. 200 HP would be nice only on the odd occasion but doesn't warrant the extra cost/weight for most of my missions. VNE is also a consideration when more HP is available at altitude, it's very easy to go straight thru VNE in a high powered Vans on decent. A CS in my opinion is a must to get that rated HP at t/off, FP denies an engine this. Also better for aero's.
Each to their own of course but the above combo is the most widely used in Vans airframes cause it works��

That Vans smile costs money, one day I'll pay fir that by way of old age wrinkled looks...lol
 
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You’ll be unhappy if you ever need to buy a angle valve cylinder, they’re more than twice as much and only available from lycoming.

Nope. Even Continental makes PMA IO-360 angle valve cylinders for Lycomings. http://www.continentalmotors.aero/parts/faa-approved.aspx

IO-390 cylinders are currently Lycoming only, but they did lower the price some time back.

Weights, with stated accessories, as quoted by the factory for the Kitplanes Engine Buyers Guide:

YO-235-EXP direct 118 HP @ 2800 RPM carburetor parallel valve 250 w/mags,fuel system,starter
YIO-235-EXP direct 115 HP @ 2800 RPM fuel injected parallel valve 250 w/mags,fuel system,starter
YO-320-D1A direct 160 HP @ 2700 RPM carburetor parallel valve 255 lbs w/ mags, fuel system, starter, CS
YIO-320-DIA direct 160 HP @ 2700 RPM injected parallel valve 270 lbs w/ mags, fuel system, starter
YO-320-D2G direct 160 HP @ 2700 RPM carburetor parallel valve 250 lbs w/ mags, fuel system, starter
YO-360-A1A direct 180 HP @ 2700 RPM carburetor parallel valve 285 lbs w/ mags, fuel system, starter
YO-360-A4M direct 180 HP @ 2700 RPM carburetor parallel valve 285 lbs w/ mags, fuel system, starter
YIO-360-M1B direct 180 HP @ 2700 RPM injected parallel valve 290 lbs w/ mags, fuel system, starter
YIO-360-A1B6 direct 200 HP @ 2700 RPM injected angle valve 325 lbs w/ mags, fuel system, starter
YIO-390-A3B6 direct 210 HP @ 2700 RPM injected angle valve 315 lbs w/ mags, fuel system, starter
YIO-390-EXP (10:1 CR) direct 220 HP @ 2700 RPM injected angle valve 315 lbs w/ mags, fuel system, starter
YIO-540-D4A5 direct 260 HP @ 2700 RPM injected parallel valve 400 lbs w/ mags, fuel system, starter
YIO-580-B1A direct 315 HP @ 2700 RPM injected angle valve 440 lbs w/ mags, fuel system, starter
YIO-580-B1A (10:1 CR) direct 320 HP @ 2700 RPM injected angle valve 440 lbs w/ mags, fuel system, starter

Generally speaking, installed engine weight is the most nebulous number in all of aviation.
 
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Angle Valve Cylinders

Continental Motors now manufactures FAA PMA approved angle valve cylinders. There is now competition with Lycoming for them.
 
Engine

Thank you! Extremely helpful.

YO-235-EXP direct 118 HP @ 2800 RPM carburetor parallel valve 250 w/mags,fuel system,starter
YIO-235-EXP direct 115 HP @ 2800 RPM fuel injected parallel valve 250 w/mags,fuel system,starter
YO-320-D1A direct 160 HP @ 2700 RPM carburetor parallel valve 255 lbs w/ mags, fuel system, starter, CS
YIO-320-DIA direct 160 HP @ 2700 RPM injected parallel valve 270 lbs w/ mags, fuel system, starter
YO-320-D2G direct 160 HP @ 2700 RPM carburetor parallel valve 250 lbs w/ mags, fuel system, starter
YO-360-A1A direct 180 HP @ 2700 RPM carburetor parallel valve 285 lbs w/ mags, fuel system, starter
YO-360-A4M direct 180 HP @ 2700 RPM carburetor parallel valve 285 lbs w/ mags, fuel system, starter
YIO-360-M1B direct 180 HP @ 2700 RPM injected parallel valve 290 lbs w/ mags, fuel system, starter
YIO-360-A1B6 direct 200 HP @ 2700 RPM injected angle valve 325 lbs w/ mags, fuel system, starter
YIO-390-A3B6 direct 210 HP @ 2700 RPM injected angle valve 315 lbs w/ mags, fuel system, starter
YIO-390-EXP (10:1 CR) direct 220 HP @ 2700 RPM injected angle valve 315 lbs w/ mags, fuel system, starter
YIO-540-D4A5 direct 260 HP @ 2700 RPM injected parallel valve 400 lbs w/ mags, fuel system, starter
YIO-580-B1A direct 315 HP @ 2700 RPM injected angle valve 440 lbs w/ mags, fuel system, starter
YIO-580-B1A (10:1 CR) direct 320 HP @ 2700 RPM injected angle valve 440 lbs w/ mags, fuel system, starter
 
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