Today's Message Index:
----------------------
1. 07:14 AM - Re: Lycoming OI-360/540 (Scott Derrick)
2. 07:23 AM - Re: Running a TSIO520 without the turbo. (Scott Derrick)
3. 06:20 PM - Re: Lycoming OI-360/540 (Charlie England)
Message 1
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| Subject: | Re: Lycoming OI-360/540 |
--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
The IO360 does not have a return line, I believe the 540 does.
You could put in a Bonanza style return. Have one return line to the
largest left or right tank, always start on that tank when full, burn it
down to 10-25% and then run through the rest of the tanks. By then the
return tank is now full as your last tank.... Sounds weird but i
drove Banana for years and it got to be a natural process..
Scott
At 06:03 AM 6/2/2004, you wrote:
>--> Engines-List message posted by: "caldwell" <caldwell@mswin.net>
>
>I'm putting the tanks in the wings of a CH-801. I'm contemplating getting
>the injected OI-360 or OI-540 Lycoming engine. I got the extended range
>option, so I have four tanks. My question is, do I need a return to all
>four tanks from the engine or do I need one at all?
>
>Thanks, Jay
>
>
"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin
Message 2
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| Subject: | Re: Running a TSIO520 without the turbo. |
--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
James,
Thanks for the reply. I thought it was strange to think it would burn more
gas at the same HP output as an engine with higher compression
pistons. made no sense at all.
The TSIO520-CE has an automatic wastegate. I'm pretty sure the compression
ratio is 7.5 to 1 and max boost is around 38 inches.
My plan at this time is to install the engine with the turbo, but its going
to take a large amount of modifications to get it all to fit so I wondered
how it would run without it....
Just thinking about going from a 200 HP normally aspirated engine to a
turbo'd 325 HP engine is exciting... Especially when your home field is at
6500 ft and summer temps are in the 90's.
Scott
At 04:47 PM 6/2/2004, you wrote:
>--> Engines-List message posted by: jamesbaldwin@attglobal.net
>
>Scott -
>This engine will run just fine without a turbo and will not use more
>gas. Fuel consumption, all other variables being equal, is dependent
>upon horsepower output as a ratio to BSFC (brake specific fuel
>consumption). Although higher compression ratios have a minimal effect
>on BSFC, your fuel consumption will vary with how much horsepower is
>being delivered to the prop. If the manifold pressure is less,
>horsepower to the prop will be less and so will your fuel consumption.
>Also, the engine will get 30 inches at standard sea level conditions
>just like any other normally aspirated engine regardless of compression
>ratio. The big catch is it won't develop as much horsepower as it would
>with the effective boost in compression ratio that a turbo supplies.
>Look at the data plate to see what the compression ratio is. This will
>determine how much power loss you will suffer. Engines that are rated
>at large boost levels --i.e. over 38 inches or so -- have compression
>ratios correspondingly low. Those which are only boosted slightly or
>are "normalized" have ratios the same as or close to their unboosted
>counterparts. This is why some turbocharged engines are not boosted
>for sea level takeoffs. The wastegate, usually manual, is left wide
>open, bypassing the turbo output. Turbos are installed on normally
>aspirated engines to maintain sea level pressure conditions at altitude.
>
>James Baldwin
>
>Dan Rogers wrote:
>
> >--> Engines-List message posted by: Dan Rogers <drogers@maf.org>
> >
> >All turbo 520s that I know have lower compression than their non turbo
> >counterparts, so therefore make less power and use more gas. I don't
> >think you will ever get 30" in a running non turbo engine so would not
> >get 285 hp. All you sure it doesn't need 32 inches for 285?
> >
> >All the compression difference is in the pistons so if you got the non
> >turbo pistons you would be set to make full power without turbo. I
> >think you would still need to get the right fuel pump and injectors and
> >you would also have to make something for the intake airfilter system.
> >
> >Dan Rogers
> >
> >Scott Derrick wrote:
> >
> >
> >
> >>--> Engines-List message posted by: Scott Derrick <scott@tnstaafl.net>
> >>
> >>I am rebuilding the bottom end of a TSIO520 for installation into a Std.
> >>Velocity.
> >>
> >>Can I run this engine without the turbo? It is rated at 285 HP at 30
> >>inches, so I would assume it would operate just like a IO520?
> >>
> >>Scott
> >>
> >>"Those who sacrifice freedom to get security, deserve neither."
> >>- Benjamin Franklin
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
>
"Those who sacrifice freedom to get security, deserve neither."
- Benjamin Franklin
Message 3
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| Subject: | Re: Lycoming OI-360/540 |
--> Engines-List message posted by: Charlie England <ceengland@bellsouth.net>
caldwell wrote:
>--> Engines-List message posted by: "caldwell" <caldwell@mswin.net>
>
>I'm putting the tanks in the wings of a CH-801. I'm contemplating getting the
injected OI-360 or OI-540 Lycoming engine. I got the extended range option,
so I have four tanks. My question is, do I need a return to all four tanks from
the engine or do I need one at all?
>
>Thanks, Jay
>
Continentals typically use a return line; Bendix injection on Lycs (at
least on the IO-320/360 series engines I've flown) don't use a return line.
Charlie
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