[josefvpp]

Hello friends, I am doing a mini cooper engine swap for Yamaha R1 2012, crossplane crank, 24-2 crank 1 tooth cam, I have problems with the odd ignition configuration since the ignition order would be 1-3-2-4, taking the cylinder 1 as zero degrees the trigger, has someone done this configuration before who can help me in configuring the ignition angle for each cylinder

[PSIG]

If I'm not mistaken, that is a flat-plane crank, not a cross-plane (American V8 style), which makes it uneven-firing. If my figures are correct, #1 is always 0°, and the rest would be:

R1 2009+ firing angles 1324.jpg (15.84 KiB) Viewed 602 times

Assumes 1-3-2-4 firing order. Verify angles before trying to run it. I'm just trying to help, and it's your engine.

[josefvpp]

Si no me equivoco, eso es una manivela de plano plano, no un plano cruzado (estilo V8 americano), lo que hace que dispare de manera desigual Si mis cifras son correctas, el #1 es siempre 0°, y el resto sería:

R1 2009+ ángulos de disparo 1324.jpg


Asume el orden de disparo 1-3-2-4. Verifica ángulos antes de intentar ejecutarlo Solo estoy tratando de ayudar, y es tu motor. : jajaja:
[/cita]

according to yamaha.

A key feature of the R1's 4-cylinder 998cc engine is the crossplane crankshaft with its even 270°-180°-90°-180° firing sequence

What I don't understand is that if 1 is physically at 0 degrees in the engine, cylinder 1 is at TDC in the center of the missing teeth, which would be 0 degrees. I will do the test as you indicate tomorrow, for this configuration I would have to run it sequentially with cam sensor?

[josefvpp]

Crossplane, Yamaha R1 after 2009 is crossplane

[PSIG]

You are correct, I reversed the terms when typing. The remainder of the statement stands.

If I'm not mistaken, that is a flat cross-pane crank (American V8 style), not a cross flat-plane, which makes it uneven-firing. [A flat-plane would fire 0-180-360-540] If my figures are correct, #1 is always 0°, and the rest would be:



Assumes 1-3-2-4 firing order. Verify angles before trying to run it. I'm just trying to help, and it's your engine.

[josefvpp]

Today I will do the tests with the angles that you indicate, otherwise I would have to uncover the engine and turn it manually to locate the degrees in the ignition order, is this the correct way to find?

[PSIG]

Yes, if you can't find it in research, test it physically. It's not too difficult, as the firing angles are multiples of 90°, so just getting close will confirm which it is. If you can find a crankshaft photo in proper orientation and rotation, you should be able to see if the #3 crank throw is either 270 or 180 from #1.

I used references such as this:

Uneven firing
The new engine’s uneven 270° - 180° - 90° - 180° firing interval creates a whole new feel to the inline 4-cylinder engine …

So, it could be from 0° + 270 + 180 + 90 = 720° total (full cycle). But it could also be assuming "270" is TDC, so 0 + 180 + 90 + 180 = 450, leaving 270 after the last firing to reach 0 again. I am not sure which 0° is (normally it would begin with 0). This is why I suggest to verify.

Don't forget the IGN outputs fire in-sequence, so they must be wired to the correct cylinders, e.g., IGN1 to Cyl1, IGN2 to Cyl3, etc.

[josefvpp]

This is the crank, I already numbered the cylinders, what can you deduce? What are the angles you think I should add to the ts?

[josefvpp]

Hello, I physically checked and starting from TDC cylinder 1, the ignition order is 270-450-540 degrees, I set the outputs to the corresponding coil, set it to sequential, I have full synchronization in ts, I have injection and spark but the engine does not makes some sign of wanting to start, it seems like it lost the spark

[jonbill]

Does it rotate anti clockwise? if so I'd agree with your angles.
Best to post your tune and a log.