Adding 2nd sparkplug to ie head.

[Saint aka ML]

Am I correct in thinking one just needs a mirror image of left side hole on the right side yes?

You know same angle, same depth in to head, same position just on right side?

Depends. I know when they do they old Triumphs and BSA's they use a much smaller plug as it's easier to fit into the combustion chamber.

This chap is worth a call

http://www.ducati-john.co.uk/ducati-tuning-upgrades.htm

[slob]

They are symetrical on 1000DS heads. You'll need much longer caps on the r/h side to clear the belts/covers.
Check piston clearance, my hi comp pistons have slots to clear electrodes.

[Saint aka ML]

Originally Posted by slob

They are symetrical on 1000DS heads. You'll need much longer caps on the r/h side to clear the belts/covers.
Check piston clearance, my hi comp pistons have slots to clear electrodes.

I will check clearance but as far as I remember pistons are identical on both sides on mine which would suggest they will clear electrodes if sparky mounted in the same spot.



Slob or someone can you look at my other thread regarding coils.

Also on my 3rd thread that sells stuff so I can get finds going!!!!

Someone buy those FCR'S!!!

[Saint aka ML]

With the lead it should not be a problem, is there maximum cable length?

Anyhow I can always mount right side coil as the one for front so leads are shorter.

[Dukedesmo]

What pistons are they? If JE high-comps then they are symmetrical so should be fine, stock are flat-topped so plenty of room.

I considered twin-sparking mine and it looked straight forward enough to 'mirror' the other side, only issue as Slob says is longer caps to clear belts/covers and either new covers or drill existing.

[slob]

Pistons are Pistal, symetrical left to right. Valve cutouts are different sizes.
I'll measure a DS Coil later

[Saint aka ML]

Thx guys.

From my research it does seems straight forward drill and thread job for 2nd sparkplug.

[Nickj]

Is there any cam and ignition timing difference to allow for the slightly slower burn when you compare a single to dual spark head?
As there's maybe going to be more of the mix burnt does it make any difference to the inlet valve (temperature maybe higher)

[Saint aka ML]

Originally Posted by Nickj

Is there any cam and ignition timing difference to allow for the slightly slower burn when you compare a single to dual spark head?
As there's maybe going to be more of the mix burnt does it make any difference to the inlet valve (temperature maybe higher)

It probably does but I am also running higher output oil pump, will add extra oil in/out lines to head as well if I can and second oil cooler.

Was thinking doing the extra oil ways at the same time.

Easy to get more oil in, extra line in via cam-shaft cover but not certain how to get more oil out of head?

[Dukedesmo]

Originally Posted by Saint aka ML

Easy to get more oil in, extra line in via cam-shaft cover but not certain how to get more oil out of head?

There's more than enough capacity on the oil return holes, the same as on 916 etc.

[slob]

[Saint aka ML]

Originally Posted by Dukedesmo

There's more than enough capacity on the oil return holes, the same as on 916 etc.

So I just add Y split to oil line out and deliver oil to heads. No need for extra return?

[Saint aka ML]

Originally Posted by slob

It looks clean is all I can say till I can get heads off