Today's Message Index:
----------------------
1. 06:26 AM - Re: New Tiger Update (flyv35b)
2. 06:30 AM - Re: Tiger Update (Les Staples, are you on TeamGrumman?) (flyv35b)
3. 08:26 AM - (TeamGrumman@aol.com)
4. 08:27 AM - Re: New Tiger Update (TeamGrumman@aol.com)
5. 10:01 PM - Autopilot (Gil Alexander)
Message 1
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| Subject: | Re: New Tiger Update |
--> TeamGrumman-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
The O-320 H series engine is a totally different design, unlike any of the
other O-320 models. You can't really compare much of anything on this
engine to others.
Cliff A&P/IA
----- Original Message -----
From: "Gil Alexander" <gilalex@earthlink.net>
Subject: Re: TeamGrumman-List: New Tiger Update
> --> TeamGrumman-List message posted by: Gil Alexander
<gilalex@earthlink.net>
>
>
> >
> >So, the last two days, I pulled the cowling, baffles, and cylinders. I
> >looked very closely at the cam. It looks pretty good. I'm going to
> >measure the
> >lobes with a dial indicator. Does anyone know the lobe lift? I can't
find
> >it in the overhaul manual.
>
>
> Gary .. this came from the Sacramento SkyRanch web site...
>
> "Lycoming do not publish the valve lift figures but I can tell you that it
is!
> Should be 0.30296\" plus or minus 0.002\" "
>
> This is for a O-320-H2AD .. my O-320 parts manual doesn't cover this
> version, but you might be able to compare part numbers...
>
> gil A
>
>
> >Gary
>
>
Message 2
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| Subject: | Re: Tiger Update (Les Staples, are you on TeamGrumman?) |
--> TeamGrumman-List message posted by: "flyv35b" <flyv35b@ashcreekwireless.com>
Gary, where are you taking the measurement, right on the cam lobes
themselves? Or are you measuring valve lift? If you are measuring valve
lift the rocker arms themselves will result is considerable variation
possibly.
Cliff
----- Original Message -----
From: <TeamGrumman@aol.com>
Subject: TeamGrumman-List: Tiger Update (Les Staples, are you on
TeamGrumman?)
> --> TeamGrumman-List message posted by: TeamGrumman@aol.com
>
> I pulled the cylinders and pistons. I inspected the cam and lifters
> visually. They look remarkably good. The baffle that wraps around #4
was missing.
> Consequently, #4 piston and cylinder have been run VERY hot. The
pistons
> and rings were cooked. At approximately 15 hours in the last 5 years,
I'm
> lucky. Had this been run a lot longer without the baffle, it could have
been a
> lot worse.
>
> I decided to mic the cam using a dial indicator. Here is where things
get
> interesting. I called Lycon and found that the cam is nominally 0.350
inch
> lift. Before I measured the lobe height with a dial indicator, I removed
all
> the lifter parts, cleaned everything with solvent, dried them, and put
them all
> back together.
>
> Now, without the specs for the cam going in, I can't tell you what it was,
> but, now, it reads like this. (NOTE: I measured the right side, #'s 1
& 3,
> first)
>
> 1I: 0.350 (So, I felt pretty good about this.)
> 1E: 0.3535 (OK, so, it was a little taller, I can live with that.)
>
> 3I: 0.351 (OK, close enough)
> 3E: 0.372 (SAY WHAT? I measured this about a dozen times. I also
had
> 2 other people verify how I was measuring and duplicated the measurement
> between 0.366 and 0.372
>
> 2I: 0.355
> 2E: 0.357
>
> 4I: 0.355
> 4E: 0.358 to 0.360
>
> Now for the weird thing. #1 intake (0.350) and #2 intake (0.355)
share
> the same lobe. So, even after measuring the two together several times,
#1
> was always about 0.005 less. Bent cam?
>
> Also, #3 intake (0.351) and #4 intake (0.355) share the same lobe.
Same
> thing. It's weird. Can you just picture two guys who have built
numerous
> motors and one machinist looking at this and wondering just how in the
hell
> the measurements can be different from one side to the other on the same
cam
> lobe?
>
> Tomorrow I am going to order:
>
> 1) new Lycoming cylinders and pistons, ported and polished by LyCon
> 2) JPI 700
> 3) New lightweight starter, the high torque model, from Les Staples.
> 4) plus a few odds and ends from Fletcher.
>
> Gary
>
>
Message 3
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--> TeamGrumman-List message posted by: TeamGrumman@aol.com
In a message dated 04/19/04 06:34:11 AM, flyv35b@ashcreekwireless.com writes:
> Gary, where are you taking the measurement, right on the cam lobes
> themselves?=A0 Or are you measuring valve lift?=A0 If you are measuring valve
> lift the rocker arms themselves will result is considerable variation
> possibly.
>
I'm taking them right at the cam. Like I said, it's all apart. I just
have the lifter body and its plunger and cap installed. I bled all the oil out.
Message 4
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| Subject: | Re: New Tiger Update |
--> TeamGrumman-List message posted by: TeamGrumman@aol.com
In a message dated 04/19/04 06:30:59 AM, flyv35b@ashcreekwireless.com writes:
> The O-320 H series engine is a totally different design, unlike any of the
> other O-320 models.=A0 You can't really compare much of anything on this
> engine to others.
>
this is on my new Tiger
Message 5
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--> TeamGrumman-List message posted by: Gil Alexander <gilalex@earthlink.net>
Gary.... this was the Century I autopiot that was on E-Bay
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=26436&item=2473078947&sspagename=STRK%3AMEBWA%3AIT
.. but I'll send you the amount we talked about.
What address do you want me to send a check to??
What shape is the Narco NAV 12 1 in? ....and how much do you want
for it??
gil in Tucson (Nav 121 for the future RV-6A)
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