High Engine Temp.-912

[Aurele Lavigne]

I`ve been having trouble with my engine temp. in my Rebel. Even with the oil cooler supplied by Rotech I`m running in the 270`s F, and water temp at about 90 C. I`ve talked to Murphy and they indicate that the cowling is fine the way it is based on their field experience. I`m using a 15w50 full synthetic oil but that`s just for added protection. Of course my oil temps have dropped off with the weather and this problem existed primarely in the hottest summer days, but I`d still like to oin point the problem. I ususally mix my antifreeze at 70/30.

Does anybody have any suggestions where I should troubleshoot.

Thanks, Aurele
Rebel 063

[Wayne G. O'Shea]

Aurele, have you actually checked your senders and gauges with a know medium(like boiling water at 212deg) to be certain you are not chasing a ghost! The AULA rebel we built and sold did good to get the oil up to 200F and the cooling system matched!(using the supplied Murphy cowling) We see this also in my wifes Zenair CH701 with a 912, that is that the oil and cylinder temperatures usually match and in this case at approx 210F.

Wayne

-----Original Message-----
From: Aurele Lavigne <alavigne@ntl.sympatico.ca (alavigne@ntl.sympatico.ca)>
To: murphy-rebel@dcsol.com (murphy-rebel@dcsol.com) <murphy-rebel@dcsol.com (murphy-rebel@dcsol.com)>
Date: Monday, November 15, 1999 8:23 PM
Subject: High Engine Temp.-912


I`ve been having trouble with my engine temp. in my Rebel. Even with the oil cooler supplied by Rotech I`m running in the 270`s F, and water temp at about 90 C. I`ve talked to Murphy and they indicate that the cowling is fine the way it is based on their field experience. I`m using a 15w50 full synthetic oil but that`s just for added protection. Of course my oil temps have dropped off with the weather and this problem existed primarely in the hottest summer days, but I`d still like to oin point the problem. I ususally mix my antifreeze at 70/30.

Does anybody have any suggestions where I should troubleshoot.

Thanks, Aurele
Rebel 063

[REBEL112R]

Is that mixture 70% water and 30% glycol? If it is the other way around it
may cause some problems, my opinion. I don't think that would be 100% of the
oil temp problem though.
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[Bob Patterson]

I agree completely !! Our 912 has the oil temp about 175 degrees, and
the water at 165, through most of the summer. The absolute reading could
be off by a fair bit, but as long as they stabilize to ABOUT the same temp,
everything is likely OK. There were problems with the accuracy of the
factory sensors on some engines...

Hmmmmmm.... "oil cooler supplied by Rotech" - I thought they recommended
TWO coolers..... We use the oil cooler supplied by Murphy - it was
less expensive, and works well.

......bobp

--------------------------orig.-------------------------------------------
At 11:03 PM 11/15/99 -0500, you wrote:

Aurele, have you actually checked your senders and gauges with a know

medium(like boiling water at 212deg) to be certain you are not chasing a
ghost! The AULA rebel we built and sold did good to get the oil up to 200F
and the cooling system matched!(using the supplied Murphy cowling) We see
this also in my wifes Zenair CH701 with a 912, that is that the oil and
cylinder temperatures usually match and in this case at approx 210F.

Wayne
-----Original Message-----
From: Aurele Lavigne <alavigne@ntl.sympatico.ca>
To: murphy-rebel@dcsol.com <murphy-rebel@dcsol.com>
Date: Monday, November 15, 1999 8:23 PM
Subject: High Engine Temp.-912


I`ve been having trouble with my engine temp. in my Rebel. Even with

the oil cooler supplied by Rotech I`m running in the 270`s F, and water temp
at about 90 C. I`ve talked to Murphy and they indicate that the cowling is
fine the way it is based on their field experience. I`m using a 15w50 full
synthetic oil but that`s just for added protection. Of course my oil temps
have dropped off with the weather and this problem existed primarely in the
hottest summer days, but I`d still like to oin point the problem. I ususally
mix my antifreeze at 70/30.

Does anybody have any suggestions where I should troubleshoot.

Thanks, Aurele
Rebel 063
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http-equiv=Content-Type><!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN">

<META content='"MSHTML 4.72.3612.1706"' name=GENERATOR>
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<BODY bgColor=#ffffff>
<DIV><FONT color=#000000 size=2>Aurele, have you actually checked your senders
and gauges with a know medium(like boiling water at 212deg) to be certain you
are not chasing a ghost! The AULA rebel we built and sold did good to get the
oil up to 200F and the cooling system matched!(using the supplied Murphy
cowling) We see this also in my wifes Zenair CH701 with a 912, that is that

the

oil and cylinder temperatures usually match and in this case at approx
210F.</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
<DIV><FONT size=2>Wayne</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 solid 2px; MARGIN-LEFT: 5px; PADDING-LEFT: 5px">
<DIV><FONT face=Arial size=2><B>-----Original Message-----</B><BR><B>From:
</B>Aurele Lavigne <<A

href="mailto:alavigne@ntl.sympatico.ca">alavigne@ntl.sympatico.ca</A>><BR

<B>To:
</B><A href="mailto:murphy-rebel@dcsol.com">murphy-rebel@dcsol.com</A>
<<A

href="mailto:murphy-rebel@dcsol.com">murphy-rebel@dcsol.com</A>><BR><B>Date:

</B>Monday, November 15, 1999 8:23 PM<BR><B>Subject: </B>High Engine
Temp.-912<BR><BR></DIV></FONT>
<DIV><FONT color=#000000 size=2>I`ve been having trouble with my engine
temp. in my Rebel. Even with the oil cooler supplied by Rotech I`m running
in the 270`s F, and water temp at about 90 C. I`ve talked to Murphy and

they

indicate that the cowling is fine the way it is based on their field
experience. I`m using a 15w50 full synthetic oil but that`s just for added
protection. Of course my oil temps have dropped off with the weather and
this problem existed primarely in the hottest summer days, but I`d still
like to oin point the problem. I ususally mix my antifreeze at
70/30.</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
<DIV><FONT color=#000000 size=2>Does anybody have any suggestions where I
should troubleshoot.</FONT></DIV>
<DIV><FONT color=#000000 size=2></FONT>&nbsp;</DIV>
<DIV><FONT size=2>Thanks, Aurele</FONT></DIV>
<DIV><FONT size=2>Rebel 063</FONT></DIV></BLOCKQUOTE></BODY></HTML>

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[Bob Patterson]

I seem to recall that Rotax suggest a 50/50 mixture ...... But you're
right, this shouldn't affect the oil temp much.

Where is the oil cooler mounted ?? Does it have good exit for the air ??

.......bobp

------------------------------orig.-----------------------------------
At 11:47 AM 11/16/99 EST, you wrote:

Is that mixture 70% water and 30% glycol? If it is the other way around it
may cause some problems, my opinion. I don't think that would be 100% of the
oil temp problem though.
*----------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*----------------------------------------------------*

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between builders and owners of Murphy Rebel aircraft.
Archives located at:
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[Aurele Lavigne]

Bob, many thanks to you again, as well as others who have replied to my
querries. Here's a summary on the points raised:

Muffler: I do plan to buy most parts from Terry and he also feels the fit
should be close(small mods may be req`d and welding is not a problem)
Pitch: I will play with this and try to get them all even
Strobes: Once again you`re an invaluable source of information(Can't wait to
buy you one!!!(I will make an effort to attend a meeting in the spring)
Oil temp: the conscensous seems to be that my coolant should be diluted more
to 50/50 and I'll try this next summer( I do think the oil temp should
improve)

Bye for now, Aurele
-----Original Message-----
From: Bob Patterson <bob.patterson@canrem.com>
To: Murphy Rebel Builders List <murphy-rebel@dcsol.com>
Date: Tuesday, November 16, 1999 10:53 PM
Subject: Re: High Engine Temp.-912

I seem to recall that Rotax suggest a 50/50 mixture ...... But you're
right, this shouldn't affect the oil temp much.

Where is the oil cooler mounted ?? Does it have good exit for the air ??

.......bobp

------------------------------orig.-----------------------------------
At 11:47 AM 11/16/99 EST, you wrote:

Is that mixture 70% water and 30% glycol? If it is the other way around

it

may cause some problems, my opinion. I don't think that would be 100% of

the

oil temp problem though.
*----------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*----------------------------------------------------*

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The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
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*----------------------------------------------------*

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[Bob Patterson]

Great !! Please keep us updated on how the exhaust is working - there
will likely be others who want one !

Now you know why I recommend this mail list so highly !! You've received
useful information from Rebel builders all over the world !!!

A big thank you to everybody for your help - Rebel builders are all
GREAT people !!! :-)

......bobp

-------------------------------orig.--------------------------------------
At 04:18 PM 11/17/99 -0500, you wrote:

Bob, many thanks to you again, as well as others who have replied to my
querries. Here's a summary on the points raised:

Muffler: I do plan to buy most parts from Terry and he also feels the fit
should be close(small mods may be req`d and welding is not a problem)
Pitch: I will play with this and try to get them all even
Strobes: Once again you`re an invaluable source of information(Can't wait to
buy you one!!!(I will make an effort to attend a meeting in the spring)
Oil temp: the conscensous seems to be that my coolant should be diluted more
to 50/50 and I'll try this next summer( I do think the oil temp should
improve)

Bye for now, Aurele
-----Original Message-----
From: Bob Patterson <bob.patterson@canrem.com>
To: Murphy Rebel Builders List <murphy-rebel@dcsol.com>
Date: Tuesday, November 16, 1999 10:53 PM
Subject: Re: High Engine Temp.-912

I seem to recall that Rotax suggest a 50/50 mixture ...... But you're
right, this shouldn't affect the oil temp much.

Where is the oil cooler mounted ?? Does it have good exit for the air ??

.......bobp

------------------------------orig.-----------------------------------
At 11:47 AM 11/16/99 EST, you wrote:

Is that mixture 70% water and 30% glycol? If it is the other way around

it

may cause some problems, my opinion. I don't think that would be 100% of

the

oil temp problem though.
*----------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*----------------------------------------------------*

*----------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
http://www.dcsol.com/murphy-rebel/lists/default.htm
*----------------------------------------------------*

*----------------------------------------------------*
The Murphy Rebel Builders List is for the discussion
between builders and owners of Murphy Rebel aircraft.
Archives located at:
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*----------------------------------------------------*

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Archives located at:
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