Today's Message Index:
----------------------
1. 05:18 AM - 582 Blue Head problem (George Myers)
2. 05:19 AM - Re: Use of Honda HP4M Oil in 912 UL (Thomas R. Riddle)
3. 07:35 AM - While we're on the subject of oil... (icrashrc)
4. 08:02 AM - Re: While we're on the subject of oil... (Ollie Washburn)
5. 08:04 AM - Re: While we're on the subject of oil... (Robert Borger)
6. 08:18 AM - Re: Use of Honda HP4M Oil in 912 UL (Goodone)
7. 10:41 AM - Re: 582 Blue Head problem (Guy Buchanan)
8. 05:40 PM - Re: While we're on the subject of oil... (Dave)
Message 1
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| Subject: | 582 Blue Head problem |
I just decarboned & replaced the crank seals my 582 blue head. It runs great
but has one big problem. It keeps forcing coolant out of the overflow. At
higher rpms it will fill the expansion bottle in a few minutes, but nothing
comes out under 3500. It will continue forcing the coolant out until enough
is lost for the engine to overheat. Water Temp is perfect until enough fluid
is forced out and then skyrockets. It isn't the cap as I have tried 2 and it
makes no difference. There is pressure inside even after cool down. I am
assuming either a gasket leaking or improperly installed. I would appreciate
any ideas.
Thanks
George E. Myers Jr.
San Marcos, TX 78666
Quicksilver MXLII 582 Blue Head C box N8130K
Message 2
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| Subject: | Re: Use of Honda HP4M Oil in 912 UL |
Roger,
When you copy and paste a long treatise on oil viscosity (or other
subject) please reference the source so we will be able to evaluate
its validity. Also, I'm sure its author would appreciate the credit.
Lacking this, one might assume that you are the author.
I'm not a petroleum engineer so I rely on published charts for
acceptable OAT minimums when selecting oil viscosity ratings, which
follows:
20w-50 Min 0F
15w-40 Min -10F
10w-30 Min -20F
5w-30 Min -30F
Thom in Buffalo
Message 3
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| Subject: | While we're on the subject of oil... |
Does anyone know if one brand/ type/ weight of oil does a better job of scavenging
lead then the others? I have a used 912uls that was run on 100ll but had oil
changes on the mo-gas schedule. The engine only has 180 hours on it. I'm sure
there's some excess lead buildup in the crankcase. Lockwood has looked over
the gearbox and pronounced it fine.
Also, I've read in the past about a fuel additive that scavenges lead from the
top end but last i knew they quit making it. Is there any product like that still
on the market?
Thanks,
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 5496#205496
Message 4
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| Subject: | Re: While we're on the subject of oil... |
Lockwood sells TCP which is supposed to scavenge the lead
Ollie
On Mon, Sep 22, 2008 at 10:34 AM, icrashrc <icrashrc@aol.com> wrote:
>
> Does anyone know if one brand/ type/ weight of oil does a better job of
> scavenging lead then the others? I have a used 912uls that was run on 100ll
> but had oil changes on the mo-gas schedule. The engine only has 180 hours on
> it. I'm sure there's some excess lead buildup in the crankcase. Lockwood
> has looked over the gearbox and pronounced it fine.
> Also, I've read in the past about a fuel additive that scavenges lead from
> the top end but last i knew they quit making it. Is there any product like
> that still on the market?
> Thanks,
>
> Scott
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p 5496#205496
>
>
Message 5
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| Subject: | Re: While we're on the subject of oil... |
Scott,
There is ALCOR TCP (hazmat, it is not transportable in your aircraft) and Decalin
Runup Fuel Additive (not hazmat, it is transportable in your aircraft). Both
are supposed to scavenge lead. In addition, I have heard that Marvel Mystery
Oil is supposed to be able to assist lead removal. All are available from
Aircraft Spruce.
I plan to use the Decalin and Marvel products in my 914 when I begin to run it
regularly.
Check six,
Bob Borger
Europa XS, short wings, Rotax 914 w/ intercooler & Airmaster C/S prop.
99.9% complete. Shaking out radio gremlins...
On Monday, September 22, 2008, at 09:34AM, "icrashrc" <icrashrc@aol.com> wrote:
>
>Does anyone know if one brand/ type/ weight of oil does a better job of scavenging
lead then the others? I have a used 912uls that was run on 100ll but had
oil changes on the mo-gas schedule. The engine only has 180 hours on it. I'm
sure there's some excess lead buildup in the crankcase. Lockwood has looked over
the gearbox and pronounced it fine.
>Also, I've read in the past about a fuel additive that scavenges lead from the
top end but last i knew they quit making it. Is there any product like that still
on the market?
>Thanks,
>
>Scott
Message 6
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| Subject: | Re: Use of Honda HP4M Oil in 912 UL |
Thanks folks for all the information. I do want to say that I have felt that a
semi-synthetic oil would be best for use in the 912 even if you were not using
100LL. The major reason for this is that it is my understanding that conventional
oils are supposed to stay attached to metals better than synthetic oil and
thus protect from rusting better than the 100% synthetic. Since aircraft engines
typically sit for long periods of time compared to autos, it would seem to
suggest that the semi-synthetic would be the way to go since it would protect
a bit better. Now Shell has come out with their new oil and it is a semi-synthetic.
The Honda oil is like the Shell and it contains the moly. However, I can't
seem to get the lower weight oil anymore.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p 5504#205504
Message 7
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| Subject: | Re: 582 Blue Head problem |
At 05:18 AM 9/22/2008, you wrote:
>It will continue forcing the coolant out until enough is lost for
>the engine to overheat. Water Temp is perfect until enough fluid is
>forced out and then skyrockets. It isn't the cap as I have tried 2
>and it makes no difference. There is pressure inside even after cool
>down. I am assuming either a gasket leaking or improperly installed.
>I would appreciate any ideas.
Three:
1. Leaking head O-ring allows high pressure gas into the water
jacket. Replace O-rings and carefully inspect seats.
2. Leaking cylinder bolt allows gas from the block into the water
jacket. (Remember that on a 2-stroke the case is pressurized.)
Replace cylinder base gasket and lube the cylinder bolts on installation.
3. The coolant system needs bleeding. Any residual gas in the coolant
system will expand and force out coolant when it gets hot. Make sure
you vent the system vigorously. (E.g. shake the crap out of it.)
Guy Buchanan
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Message 8
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| Subject: | While we're on the subject of oil... |
Almost everyone I know that uses Alcor carries it in their planes. Alcor
suspended shipping the easy to measure containers due to leaking at the cap
seal. It may be available again now. I use the Alcor when Auto Fuel is
unavailable.
-----Original Message-----
There is ALCOR TCP (hazmat, it is not transportable in your aircraft) and
Decalin Runup Fuel Additive (not hazmat, it is transportable in your
aircraft). Both are supposed to scavenge lead. In addition, I have heard
that Marvel Mystery Oil is supposed to be able to assist lead removal. All
are available from Aircraft Spruce.
I plan to use the Decalin and Marvel products in my 914 when I begin to run
it regularly.
Check six,
Bob Borger
Europa XS, short wings, Rotax 914 w/ intercooler & Airmaster C/S prop.
99.9% complete. Shaking out radio gremlins...
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