Is anyone using a bigger gap than factory spec .06-.07 If so, what are the results. Thanks
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Is anyone using a bigger gap than factory spec .06-.07 If so, what are the results. Thanks
I've always considered this to be correct. Another thing to enhance your spark is to have sharp corners on the electrodes, like they are when new. Once upon a time we used to file and gap plugs to keep the spark hot. If you use Iridium or Platinum plugs you'll notice that the electrodes are much smaller, hence, even when they wear they remain sharper. However, iridium/platinum plugs hardly wear at all anyway. As a rule, you'll get noticeably better performance with them, and for a lot, lot longer - minimum 100,000Km. I haven't used conventional plugs for >20 years and I sure don't miss buying them, gapping them and changing them every 10,000Km or more. First plug change, in with iridiums.Not a good idea. Gap actually increases as miles accumulate and electrodes wear away. Increasing the gap requires more voltage to jump the gap. That can adversely impact coils. I've always set plug gap to the tight side so that they stay in range longer.
Hi, it's me again...How can I find the spark plug gap for my California Stone?Not a good idea. Gap actually increases as miles accumulate and electrodes wear away. Increasing the gap requires more voltage to jump the gap. That can adversely impact coils. I've always set plug gap to the tight side so that they stay in range longer.
Hi, it's me again...How can I find the spark plug gap for my California Stone?
Thanks John, I've been looking for a "Manual" but can't find one and the resource link under downloads does not have one for my bike...ugh...is there another place to find one? I would like to have one by my side, thanks again!Read the manual. If you don't have one the gap should be 0.7mm or 0.027 inch, Since we don't have metric feeler gauges in the US, I set with a round wire gauge to 0.025 inch. BTW, this question should have been asked in the Tonti and Loop section.
Larry, I think the gap should be 0.7mm or 0.025" with a roundIs anyone using a bigger gap than factory spec .06-.07 If so, what are the results. Thanks
I would check the manual. 0.7mm is normal on a motorbike with electronic coil ignition.V7 III manual says .9mm. Is that something one would stick to or is it better to close the gap. Mind you, mine as an 820.
HiBUT,!!! He is asking about a III not a 1 or a 2. The heads are different. It is 9 or 36 thousands.
I agree that this is what the manual says - my V9 is the sameThe V7ii manual gives the plugs as NGK CPR8EB-9. The "-9" means they come out of the box at 0.9mm gap. The manual says gap should be between 0.6mm and 0.7mm. Which means they need adjusting from new. Many garages will fit them out of the box without re-gapping, which is wrong - it needs more volts as stated above, and can result in missing sparks particularly as higher revs. I re-gap the plugs with metric spark plug gap wires to 0.7mm, by go/no-go, the 0.65 passes, the 0.70 sticks, with the electrode faces parallel (which cannot be done with flat feeler gauges). I have experimented - gap of 0.5mm misfires all over the place, bike is unridable - gap of 0.9mm misses sparks like the battery is dead. Metric gauges are available; the rest of the world is all-metric and are thoroughly pained by trying to use the inch. Italy has never used that inch, you will find conversion errors in their literature.
It does not just apply to Moto Guzzi but pretty much any vehicle (modern cars with "firing packs" can be a bit weird). There is some difference in time constant between points and electronic. Points, old school 0.025-inch "25-thou". With electronic 0.70mm, that final nought means +/-0.05mm. I actually experimented with a bike, a single with gaps of 0.5, 0.6, 0.7, 0.8, 0.9 mm. The 0.5mm produced random sparks all over the place, the bike would not run. The "out of the box" 0.9mm misses at high revs, there's not enough time for the charge to build up enough to jump 0.9mm at high revs.I agree that this is what the manual says - my V9 is the same
But it makes no sense to me that MG would specify a plug with a 0.9 gap when they could have specified it with 0.7 for example if that's what the bike needs