Today's Message Index:
----------------------
1. 05:41 AM - Re: Running a TSIO520 without the turbo. (Dan Rogers)
2. 06:37 AM - Re: Running a TSIO520 without the turbo. (flyv35b)
3. 07:17 AM - Re: Running a TSIO520 without the turbo. (flyv35b)
4. 11:42 PM - Official Usage Guideline [Please Read] [Monthly Posting] (Matt Dralle)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Running a TSIO520 without the turbo. |
--> 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
>
>
>
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Running a TSIO520 without the turbo. |
--> Engines-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
I don't see why you can't operate it normally aspirated. You might compare
the parts books on the IO and TSIO engines and see if there is any
difference in the bottom end of the two engines. I doubt it.
Cliff A&P/IA
----- Original Message -----
From: "Scott Derrick" <scott@tnstaafl.net>
Subject: Engines-List: Running a TSIO520 without the turbo.
> --> 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
>
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Running a TSIO520 without the turbo. |
--> Engines-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
> 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
Correct, but this is all upper end changes and he was talking about the
bottom end of the engine.
The typical compression ratio of most turbo engines is 7.0:1, whereas the
normally aspirated IO-520 is 8.5:1. This is why the turbo engine is so much
less fuel efficient, especially at the lower altitudes. It is also the
reason why the aftermarket turbonormalized engine modifications with their
unchanged 8.5:1 CR are much superior to the factory turbos. The best of
both worlds.
Cliff A&P/IA
----- Original Message -----
From: "Dan Rogers" <drogers@maf.org>
Subject: Re: Engines-List: Running a TSIO520 without the turbo.
> --> 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
> >
> >
> >
> >
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Official Usage Guideline [Please Read] [Monthly Posting] |
DNA: do not archive
--> Engines-List message posted by: Matt Dralle <dralle@matronics.com>
Dear Lister,
Please read over the Engines-List Usage Guidelines below. The complete
Engines-List FAQ including these Usage Guidelines can be found at the
following URL:
http://www.matronics.com/FAQs/Engines-List.FAQ.html
Thank you,
Matt Dralle
Matronics Email List Administrator
******************************************************************************
Engines-List Usage Guidelines
******************************************************************************
The following details the official Usage Guidelines for the Engines-List.
You are encouraged to read it carefully, and to abide by the rules therein.
Failure to use the Engines-List in the manner described below may result
in the removal of the subscribers from the List.
Engines-List Policy Statement
The purpose of the Engines-List is to provide a forum of discussion for
things related to this particular discussion group. The List's goals
are to serve as an information resource to its members; to deliver
high-quality content; to provide moral support; to foster camaraderie
among its members; and to support safe operation. Reaching these goals
requires the participation and cooperation of each and every member of
the List. To this end, the following guidelines have been established:
- Please keep all posts related to the List at some level. Do not submit
posts concerning computer viruses, urban legends, random humor, long
lost buddies' phone numbers, etc. etc.
- THINK carefully before you write. Ask yourself if your post will be
relevant to everyone. If you have to wonder about that, DON'T send it.
- Remember that your post will be included for posterity in an archive
that is growing in size at an extraordinary rate. Try to be concise and
terse in your posts. Avoid overly wordy and lengthy posts and
responses.
- Keep your signature brief. Please include your name, email address,
aircraft type/tail number, and geographic location. A short line
about where you are in the building process is also nice. Avoid
bulky signatures with character graphics; they consume unnecessary
space in the archive.
- DON'T post requests to the List for information when that info is
easily obtainable from other widely available sources. Consult the
web page or FAQ first.
- If you want to respond to a post, DO keep the "Subject:" line of
your response the same as that of the original post. This makes it
easy to find threads in the archive.
- When responding, NEVER quote the *entire* original post in your
response. DO use lines from the original post to help "tune in" the
reader to the topic at hand, but be selective. The impact that
quoting the entire original post has on the size of the archive
can not be overstated!
- When the poster asks you to respond to him/her personally, DO NOT
then go ahead and reply to the List. Be aware that clicking the
"reply" button on your mail package does not necessarily send your
response to the original poster. You might have to actively address
your response with the original poster's email address.
- DO NOT use the List to respond to a post unless you have something
to add that is relevant and has a broad appeal. "Way to go!", "I
agree", and "Congratulations" are all responses that are better sent
to the original poster directly, rather than to the List at large.
- When responding to others' posts, avoid the feeling that you need to
comment on every last point in their posts, unless you can truly
contribute something valuable.
- Feel free to disagree with other viewpoints, BUT keep your tone
polite and respectful. Don't make snide comments, personally attack
other listers, or take the moral high ground on an obviously
controversial issue. This will only cause a pointless debate that
will hurt feelings, waste bandwidth and resolve nothing.
-------
[This is an automated posting.]
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|