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  #1  
Old 08-23-2018, 05:45 AM
boearl boearl is offline
 
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Location: Dothan, AL
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Default Engine weight difference?

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? Iíve not found any documentation.

Regards,
Ken
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  #2  
Old 08-23-2018, 07:19 AM
boearl boearl is offline
 
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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��.
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  #3  
Old 08-23-2018, 07:19 AM
Robert Anglin Robert Anglin is offline
 
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Location: houston, texas
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Default 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.

Last edited by Robert Anglin : 08-23-2018 at 07:28 AM.
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  #4  
Old 08-23-2018, 07:23 AM
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RV6_flyer RV6_flyer is offline
 
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Location: NC25
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Default

Quote:
Originally Posted by boearl View Post
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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Last edited by RV6_flyer : 08-23-2018 at 07:24 AM. Reason: Add TCDS link
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  #5  
Old 08-23-2018, 07:42 AM
boearl boearl is offline
 
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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.
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  #6  
Old 08-23-2018, 08:12 AM
snoop9erdog snoop9erdog is offline
 
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Default 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.
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  #7  
Old 08-23-2018, 10:50 AM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by boearl View Post
Thanks guys. Iím leaning toward the Vanís 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.
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  #8  
Old 08-28-2018, 09:54 PM
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gmcjetpilot gmcjetpilot is offline
 
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Quote:
Originally Posted by N941WR View Post
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.
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  #9  
Old 08-31-2018, 11:04 AM
slairson slairson is offline
 
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I can attest to the diet!!!!!
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  #10  
Old 08-31-2018, 05:41 PM
Tommy123 Tommy123 is offline
 
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Location: Naples fl
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Youíll be unhappy if you ever need to buy a angle valve cylinder, theyíre more than twice as much and only available from lycoming.
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