Paul,
Tracy does specifically match his ECU with specific coils.
Neil.


Too bad I'll have to get a new set of RX8 coils and put them
on the test stand. If you have a set could you give me
the part number printed on the side of the coil and what
year you bought them?.

I want to find out if I have the old or the new RX8 coils.


Paul Lamar


Paul,

 I have a set of coils that came with my 2005 renesis engine that I didnot
use.I am using the Denso coils that I had with the 13b.

Rino Lacombe

Check the bottom of the RX8 coils. If they look like this they
have already been overheated and probably will fail shortly.
When I took this off my car about an hour ago I freaked out.
My 2004 RX8 only has 30,000 miles. According to the Internet
I just dodged the new engine bullet.

All you people out there with early RX8 car's change out the coils
for the later versions. Mixing oil with the fuel will only help.
It will not fix the problem.

If you are flying with early RX8 coils watch out.

Rino are using the RX8 crank angle sensor and trigger wheel with
the Denso coils?

The part number on the coil from my RX8 is;
N341 18 100
A10-1355
3627

The last number appears to be the serial number
as it is the only number different than the coils on
the test stand engine.

I have a new set ordered from Pep Boys so we will see
what is different.

Paul Lamar


Paul,
Just back from the Texas ranch and opened your web site. You mentioned
having difficulty starting the engine, please keep in mind that we ran
through heavy rain getting to your shop the other day and it may be alittle
wet. Additionally we noted questions about the six bladed setup. It is
important for one to understand that the stand is simple a testmechaminism,
not a flight system. As I indicated to you nothing on that test rig
airworthy. As to the prop, the six blades are un serviceable for flightand
only represent a 350 hp drag source. milo


--------------------------------------------------------------
Every thing is in good shape Milo. It is dried out and I charged
the battery and put in 50/50 coolant.

I have not yet figured out for sure why it won't won't
start. I have fuel pressure. I don't seem to be getting spark so I
hooked up the scope to one coil. It seemed to be getting a pulse from
Tracy system so I ordered a new set of RX8 coils for my 2004 RX8 car and
will use the ones from the car that are working now as spares for
the test stand.

Do you know if the GM/Denso LS2 coils will work with Tracy's RX8
crank angle trigger system? Rino seems to think they will. The
Internetconsensus is the GM/Denso coils are more robust than the RX8 coils.
Mazdatrix has had a lot of problems with RX8 coils and they are
installing The GM/Denso coils. I have four of those and may try them.

I found one small black wire with a round terminal on the end
and I assume it is another ground wire. Is that supposed to be
connected to the stud on Tracy's computer. I have four black
wires on there right at the moment. Two pares of two.

I don't need the six blade prop as I bought some shorter
grade 8 1/2 inch bolts and assembled just a 3 blade version.
Do you recall the IVO recommended bolt torque?

The engine is unlikely to produce more than about 200 HP.
Once the prop tip speeds go transonic the RPM will be limited
anyway. I'll not being doing any sustained full power runs.
The airport manager would run me off the airport :)


Paul Lamar


paul,
Yes, I think that black wire goes to Tracy's computer box! milo

--------------------------------------------------------------

I was just able to measure the cranking dwell at about 20 milliseconds.
The coils are getting the pulse from Tracy's box however the
plugs are not firing. The plugs looked fouled so I am going to get
a new set from Autozone. PepBoys does not carry them.
I am in thge boonies out here so they will be special order at about
$20 each. I already swapped out one coil for a coil off my RX8. That
did not seem to help.

I sure hope Tracy cuts down the dwell time at 7500 RPM
as the ignition is unlikely to work with that dwell time at
7500 RPM.

Mark from Texas was having problems at high RPM with the
RX8 trigger wheel and that could be it.

Obviously the RX8 coils will work with a shorter dwell
time as my RX8 revs to 9000 RPM no problem.

Paul Lamar