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DwightFrye
Joined: 16 Apr 2008
Posts: 27
Location: Cary, NC
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 Posted: Thu Dec 18, 2008 1:53 pm Post subject: Oil Cooler Selection |
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I am building an RV-7, and am installing the 180HP XP-360 engine with
an Airflow Performance FI system. I got the stock/standard oil cooler
in my firewall-forward package (Van's part "EA OIL COOLER II").
Reading comments from others my impression is that the -7s have a
tendency to run hot. I'm curious as to the impression other on the list
have about the best oil cooler to run with the setup I intend to install.
Right NOW is the time for me to make a decision, as I'm just starting
to do some baffle work.
Clearly, if I stick with the existing cooler I can baffle-mount it,
but if I switch to the larger Stewart/Warner style ol cooler (Van's
part "EA OIL COOLER 20006A") I'll need to firewall mount the cooler
and the baffle behind the #4 cylinder will need a fitting for four
inch SCAT hose.
So ... whats the collected wisdom on this issue, folks? Chime in if
you have experiences one way or the other. And ... thanks!
-- Dwight Frye
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yenduc(at)sbcglobal.net
Guest
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| Posted: Thu Dec 18, 2008 3:43 pm Post subject: Oil Cooler Selection |
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Dwight:
I just finished flying off my hours with an XP IO 360. I used the
factory mount and radiator mounted on the baffling behind # 4
cylinder. I started flying off my hours in October when daytime temps
here in SOCal were in the high nineties and low 100s. Oil temps did
not go above 220 and as the engine broke in were normally between 180
and 195. I did do some extra bracing as has been reported by others
to reduce vibration and avoid cracking of the cooler mount and
baffling. I really like the engine -- it did take some practice to
get used to hot starts with the Airflow FI induction system, but it
is easy once you get used to it.
best wishes
dave RV 7A
On Dec 18, 2008, at 2:10 PM, Dwight Frye wrote:
| Quote: |
I am building an RV-7, and am installing the 180HP XP-360 engine with
an Airflow Performance FI system. I got the stock/standard oil cooler
in my firewall-forward package (Van's part "EA OIL COOLER II").
Reading comments from others my impression is that the -7s have a
tendency to run hot. I'm curious as to the impression other on the
list
have about the best oil cooler to run with the setup I intend to
install.
Right NOW is the time for me to make a decision, as I'm just starting
to do some baffle work.
Clearly, if I stick with the existing cooler I can baffle-mount it,
but if I switch to the larger Stewart/Warner style ol cooler (Van's
part "EA OIL COOLER 20006A") I'll need to firewall mount the cooler
and the baffle behind the #4 cylinder will need a fitting for four
inch SCAT hose.
So ... whats the collected wisdom on this issue, folks? Chime in if
you have experiences one way or the other. And ... thanks!
-- Dwight Frye
|
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Jerry Grimmonpre'
Joined: 09 Jan 2006
Posts: 144
Location: Huntley, Illinois 60142
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| Posted: Thu Dec 18, 2008 3:48 pm Post subject: Oil Cooler Selection |
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Check this out Dwight ... it was sent to me by this builder last year, he installed a SW ... just an idea for you. Jerry
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rv9jim(at)juno.com
Guest
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| Posted: Fri Dec 19, 2008 6:42 am Post subject: Oil Cooler Selection |
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Dwight,
I live in central Florida and have the same system you have. I
use the Posi---- what ever oil cooler from Van's and baffle mounted it.
I added a brace from the inside (centerline side) of the cooler to the
mounting tab flange on the engine for the purge valve. This made the
oil cooler solid to the engine rather than just attached to the baffle.
I have had no cooling problems . I started flying July 1st and only got
the oil temps high by leaning (220*F). Now that it is winter (?) here in
Florida, I watch to be sure it gets warm enough (over 180*F). I do like
the AFP fuel injection system and especially the purge valve.
Jim
____________________________________________________________
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bjudge(at)gmail.com
Guest
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| Posted: Fri Dec 19, 2008 6:41 pm Post subject: Oil Cooler Selection |
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I've been running a setrab 10 row oil cooler mounted to the baffles for ~150 hrs and never had an oil temp issue. the highest I see on a 100 F day is 200 F oil temp. Cruise will generally settle out around 170 F.
It is about 1/4 of the stock cooler size. I had a friend who was running one in a 180 hp RV-6 and I figured it was worth a try.
I made the swap because the stock cooler kept cracking my baffles and my temps were always low even with the stock cooler completely covered.
I beefed up the baffles when I did the change out so it's hard to tell if the lack of cracks is from the extra material, decreased weight or combination. Either way I was cracking baffles about every 60 hrs before. no problems since.
Bill Judge
N84WJ 330 hrs.
rv-8.blogspot.com
[quote]
Time: 01:53:20 PM PST US
From: Dwight Frye <dwight(at)openweave.org (dwight(at)openweave.org)>
Subject: Oil Cooler Selection
I am building an RV-7, and am installing the 180HP XP-360 engine with
an Airflow Performance FI system. I got the stock/standard oil cooler
in my firewall-forward package (Van's part "EA OIL COOLER II").
Reading comments from others my impression is that the -7s have a
tendency to run hot. I'm curious as to the impression other on the list
have about the best oil cooler to run with the setup I intend to install.
Right NOW is the time for me to make a decision, as I'm just starting
to do some baffle work.
Clearly, if I stick with the existing cooler I can baffle-mount it,
but if I switch to the larger Stewart/Warner style ol cooler (Van's
part "EA OIL COOLER 20006A") I'll need to firewall mount the cooler
and the baffle behind the #4 cylinder will need a fitting for four
inch SCAT hose.
So ... whats the collected wisdom on this issue, folks? Chime in if
you have experiences one way or the other. And ... thanks!
-- Dwight Frye
________________________________ Message 3 _____________________________________
Time: 03:43:39 PM PST US
From: David Cudney <yenduc(at)sbcglobal.net (yenduc(at)sbcglobal.net)>
Subject: Re: Oil Cooler Selection
Dwight:
I just finished flying off my hours with an XP IO 360. I used the
factory mount and radiator mounted on the baffling behind # 4
cylinder. I started flying off my hours in October when daytime temps
here in SOCal were in the high nineties and low 100s. Oil temps did
not go above 220 and as the engine broke in were normally between 180
and 195. I did do some extra bracing as has been reported by others
to reduce vibration and avoid cracking of the cooler mount and
baffling. I really like the engine -- it did take some practice to
get used to hot starts with the Airflow FI induction system, but it
is easy once you get used to it.
best wishes
dave RV 7A
On Dec 18, 2008, at 2:10 PM, Dwight Frye wrote:
>
> I am building an RV-7, and am installing the 180HP XP-360 engine with
> an Airflow Performance FI system. I got the stock/standard oil cooler
> in my firewall-forward package (Van's part "EA OIL COOLER II").
>
> Reading comments from others my impression is that the -7s have a
> tendency to run hot. I'm curious as to the impression other on the
> list
> have about the best oil cooler to run with the setup I intend to
> install.
> Right NOW is the time for me to make a decision, as I'm just starting
> to do some baffle work.
>
> Clearly, if I stick with the existing cooler I can baffle-mount it,
> but if I switch to the larger Stewart/Warner style ol cooler (Van's
> part "EA OIL COOLER 20006A") I'll need to firewall mount the cooler
> and the baffle behind the #4 cylinder will need a fitting for four
> inch SCAT hose.
>
> So ... whats the collected wisdom on this issue, folks? Chime in if
> you have experiences one way or the other. And ... thanks!
>
> -- Dwight Frye
>
>
________________________________ Message 4 _____________________________________
Time: 03:48:28 PM PST US
From: "Jerry Grimmonpre" <jerry(at)mc.net (jerry(at)mc.net)>
Subject: Oil Cooler Selection
Check this out Dwight ... it was sent to me by this builder last year,
he installed a SW ... just an idea for you. Jerry
---
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martin(at)gbonline.com
Guest
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| Posted: Thu Dec 25, 2008 6:23 pm Post subject: Oil Cooler Selection |
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Dwight,
When I built my RV8 .IO360AlB6 ten years ago and converted to IO390AlB6 5
years ago, I experienced the same problems you are encountering. Van
supplied the Positeck oil cooler and suggested firewall mounting. This was
a disaster. No matter what I did, it overheated immediately. I live in
Wisconsin where it is cold. I then tried another popular cooler and mounted
it on the back of cyl 4. It worked better, but still hot. After talking to
friends in the race group, I found that they had all been there and done
that to no avail. The solution is a Niagara/Harrison (now called Niagara)
10 row cooler mounted on the back of Cyl 4 as high as possible and tilted
down towards the cowling outlet as much as possible. Approx 30 to 45
degrees. The reason for the tilt is that when the outflow is directed down
towards the cowl outlet at the bottom of the cowl, it reduces the back
pressure and turbulance that is induced by directing the flow back to the
firewall and then down and out. Depending on your engine installation, you
will be able to obtain between 30 and 45 degrees down tilt before the engine
mount interfers with the oil cooler.
Good luck. If you want to discuss this, do not email me, as I do not always
monitor the internet. Call me (at) 920 619 6968 cell anytime, central time
until 1-1 2009, eastern time after, I will be in Spruce Creek Airpark in
Florida January thru April 2009.
Dick Martin
RV8 N233M
the fast one
---
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