COP
Turbo Mini Forums

I was wondering if anyone had gotten COP to work yet? And if they've found any benefits? I've got a mate who's parting up his project and has some brand new AEM pencil COP's that he'll give me for a bargain and I'm wondering if it's worth my trouble on the MS.

-James

Whats it stand for?
Cam Over Piston?

In boost we trust

Coil on plug, i googled it.
Cheers,
Joe

In boost we trust

Assuming by MS you mean MegaSquirt, you will tie up two more CPU ports to drive COP or CNP or low level logic or any 4 channel ignition system.

If you search there is a thread where Paul has bought CNPs for his next project but if you start adding in everything else MS can do and it's limited number of ports, you have to make choices what you want.

You might also find COPs hard to fit on a 5 port head under a standard round-nose front.

Coilpack on the other hand, is well proven on lots of high performance engines.

Just my thoughts.

Schrödinger's cat - so which one am I ???

I fire my vw cop units waisted spark, only requires 2 outputs ad works fine :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Your running a twink head though right evolution? I think I might agree with you Rod. I was just running a thought, as I would rather save the ports for the eventual efi.

-James

Schrödinger's cat - so which one am I ???

I thought it was a post on heatpumps and Coeffficient of performance!

http://www.jbperf.com/

i fire my hyabusa cop's wasted spark too ,on the bike .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

The vw units are unreliable at best but I havnt had any issues waisted spark to over 8000rpm. The cop I run have a low impedance pull down resistor on the logic level input (built in ignitor), but driving two off the same PNP driver is ok as it's just a logic level input, would never run two coils off the same ignitor!

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

I use the Hyabusa coils wasted spark on individual igniton drivers. I dont see these Denso coils having a problem on wasted spark as they can run silly rpm anyway, and they dont live at 8000rpm all the time.

The Denso coils are very compact and only 2 wires each and a primary resistance of around 1.6 ohm. Just beware of the CDI coils with supper low primary resistance of 0.6 ohm!!

There will be little difference in performance between a 4 tower coilpack and a COP setup.

Most modern ignitions are just bloody powerful.

And it mostly depends on the coil itself.

I once did a simple spark test on a 6 tower coil with teh spark plug out. When cranking, it was by far the biggest damn spark I had ever seen !!! No idea what vehicle they were from though, as it was in a Bowler Wildcat with a LS1 engine ( They used a pair of 6 tower coils, although were actually only using 4 towers on each coil )

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

Space was the main reason I used them

Team www.sheepspeed.com Racing

What are those COP's sprox?
They look like Ford duratec perhaps?

I'd presume they are a bike type. there are lots of Denso ones available form bikes.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

Those coils are Denso 129700 - 4150 from a suzuki GSXR. They are inductive, so the ECU will need four IGBT outputs to drive them if you want to use them.

I havent done any testing on them so to speak, other than they worked OK with a dwell of 2.5ms. That said, I never got to the bottom of a missfire around peak torque when running a 50 shot of nitrous. Some experienced people in the NO2 field suggested that the spark was not fat enough to ignite the extra rich mix, but I never got the chance to try and increase the dwell. I didn't have a scope at the time and I didn't want to cook the coils, I never had a spare set.

I have however just ordered a set of VAG TFSI 1.4 coils which have the ignitors built in so they should be perfectly suited, but will need some wiring mods to my loom

There are significant differences with the Denso coils from bikes. Some are CDI As I found out the hard way. They will work for about 30 seconds then pop the fuse and the coils are extra hot to the touch, even with dwells as low as 1ms

I'm thinking of the change to COP to save some weight, I like the look of the VAG TFSI 1.4. do you know what each of the 4 pins are for on them?

Team www.sheepspeed.com Racing