>> Jerry and I have been working on a new RX8 oil pan design to hold
>> eight quarts and that will fit a lot of motor mounts.
>>
>> Holds over 8 quarts which should delay the oil over heating
>> problem on take off. My 230 HP O-470 holds 12 quarts. Aircraft
>> engines need more oil than car engines.
>>
>> Also the RX8 engine has problems
>> with the oil breather in aircraft use as Mazda decided to store more
>> oil up inside the engine. That allowed them to make the oil pan only
>> about 2 inches deep and lower the engine in the RX8 car. At high
>> RPM (6000 to 7500 RPM) it pukes oil unless one builds an elaborate
>> oil vapor recovery system.
>>
>> When I first got my RX8 you could cruise> >> it at 70 MPH at about 3500 RPM and the check engine oil light
>> would come on. Slow down to 69 MPH and the light would go out.
>> Speed back up to 70 MPH and the light would come on again.
>> Mazda did a recall and reflashed the CPU I think to "fix" it:)
>>
>>
>> Paul Lamar ...No rotor no motor.
>
>
> Is anyone going to build this? What about the oil pickup? I am in need
> of an oil pan, I have Fred Breese's mount for My GlaStar.
>
> Also I need tgo find an oil cooler for my project. I haven't been able
> to locate a used one for the Renesis. A new one is around
> 460$....ouch. Here is a link to a guy who is selling an oil cooler kit
> on e-bay any comments would be appreciated.
>
> http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=320056703532&category=46095#ebayphotohosting
>
>
> K11
> Alaska GlaStar
>
>
> Jerry will build you a pan.
> Beware of non Mazda oil coolers. The rotary oil pressure
> runs up to 150 psi. Pressure test any oil cooler you buy to
> 300 psi. We have had several oil coolers that burst. One was the
> cause of a fatal crash. Two others caused in flight fires
> fortunately in the pattern right after take off.
>
> Not a place to save money. The oil cooling is one third of
> the total cooling there fore the coolers must be extra large.
> Paul Lamar
You should be able to find a good used 2nd or 3rd gen rx7 oil cooler on
ebay.com or www.rx7club.com for considerably less.
Cheers
Cary
Is the RX7 oil cooler the same as the RX8, do they have an internal
thermostat?
How can I get ahold of Jerry? Ed Klepsis?
I am going to use the stock water cooling tower(don't know if that is
the right term) because I am going to put in a heater. I will just
have to build a little bump into the cowl. I need to have the inlets
to the radiator I choose at near the firewall. Does anyone have
suggestions for a good radiator. I thought I needed 600 sq inches but
that is pretty big. 20" x 30" or do you also calculate in the
thickness?
Thanks,
K11
Paul Kvernplassen
The RX7 version had an oil thermostat but I don't think
you will need it. Even in Alaska. I don't recall anybody
that is complaining about cold oil. An aircraft engine generates
so much more continuous power than a car engine that cooling
always becomes and issue. I think you should control engine
temp with cowl flaps anyway as that results in more MPG due
to decreased aerodynamic drag when the flaps are closed.
Basically one is throwing away some fuel when one uses
a thermostat in an aircraft engine.
The ideal is a thermostat controlled cowl flap.
Don't know about the RX8 oil cooler thermostat but I assume it
it works the same as the RX7 oil cooler thermostat.
Paul Lamar ...No rotor no motor.
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