Does anyone know the crank angles between 1,2,4,5 and 3.

[gnutz2]

As i said in the title does anyone know the crank angles between cylinders 1,2,4,5 and 3.
I need to put the info into the S100 DTA ecu that im setting up

[S2central.net]

Already replied in your previous thread - maybe I'm not understanding your Q properly.

[gnutz2]

Sorry Paul i must have missed your reply.

I see what you are suggesting 72 Deg.

Maybe some of the Vems boys can confirm their findings?

[Gringo]

What`s there to find ? 360 degrees of crank rotation divided by 5 cylinders is 72 degrees. For full sequential fireing you shoud have a spark at every 144 degrees for each cylinder.

[S2central.net]

Thats how I see it... 144 degrees is 54 flywheel teeth (if my assumption of 135 teeth is indeed correct).

[gnutz2]

So its not 72 deg between each pot like you seggested Paul.

It`s 144 deg angles between cylinders.

[Flat on my back]

72 degees is right for the crank, angle at which the rod centre is found.

144 is the number of degrees for each firing point, remember 4 strokes rotate twice for a complete firing cycle.

Me thinks, hoping i'm right.

[caterpillar]

60 degrees

[Flat on my back]

no...

Engine cycle starts at 0 degrees, so the the firing on a 4 stroke would be seperated as:-

0, 144, 288, 432 and 576 degress of two complete cycles.

[gnutz2]

60 degrees

What is 60 degrees.

Flat on my back is correct with the 144 deg, i turned the engine over by hand to double check everything.

But because the second revolution of the engine is different to the first it means i have to run a camshaft sensor (awkward I5 engines, but sounding good)

You can repeat the ignition cycle every 360 deg on a 4 cyl engine, as long as you fire on the exhaust stroke too (wasted spark). Eliminating the need for a cam sensor( easy but not quite as sexy sounding as an I5 engine)

[Flat on my back]

It shoudn't be too dificult to identify the 4 parts of the 4-stroke cycle eg. inlet, compression, combustion and exhaust for the 5 pot engine over the 720 degree rotation, for each pot.

You know the firing cycle so work from this, being electrical i'll probably draw some crayon pictures for myself.

[Audi_CQ]

What is 60 degrees.

Flat on my back is correct with the 144 deg, i turned the engine over by hand to double check everything.

But because the second revolution of the engine is different to the first it means i have to run a camshaft sensor (awkward I5 engines, but sounding good)

You can repeat the ignition cycle every 360 deg on a 4 cyl engine, as long as you fire on the exhaust stroke too (wasted spark). Eliminating the need for a cam sensor( easy but not quite as sexy sounding as an I5 engine)

Waste spark works just as good on I5 too. No need for a camshaft sensor

[gnutz2]

Waste spark works just as good on I5 too. No need for a camshaft sensor

Please tell me more, I`ve been thinking about it and cannot see how it is possible as no two cylinders are at TDC at any one time.