Coils
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Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
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Evilchicken0
- Site Supporter
- Posts: 5374
- Joined: Tue Apr 29, 2008 8:59 pm
- Bike owned: Bimota SB6 Yamaha FZR 3TJ x2
- Location: Lundin Taan
Re: Coils
If your just looking to upgrade use a pair of Dyna coils with posh HT leads and plug caps.
I doubt anybody would notice a difference at ilde. Coils tend to break down at high revs where there's a "blurring" to the engine. That's to say the spark is slightly weaker and advaced / retarded due to the recovery time of the coil. Better coils can recover and discharge faster with a more intense spark. The HT leads and caps may have a lower resistance ...all of which adds to a better burn of fuel which will mean a 1-2% difference in power at the top end.
But if your bike's running ok then it's really not worth the cash as a mod.
I doubt anybody would notice a difference at ilde. Coils tend to break down at high revs where there's a "blurring" to the engine. That's to say the spark is slightly weaker and advaced / retarded due to the recovery time of the coil. Better coils can recover and discharge faster with a more intense spark. The HT leads and caps may have a lower resistance ...all of which adds to a better burn of fuel which will mean a 1-2% difference in power at the top end.
But if your bike's running ok then it's really not worth the cash as a mod.
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dinodelta
- Settled in member
- Posts: 20
- Joined: Mon Jul 27, 2009 7:15 pm
Re: Coils
Coils break down slowly and the figure I remember being banded around was that if the original coils were still on the bike at 20k miles, you would probably have a power loss of around 10%. The modern 'coil pack' type are a lot more efficient and last better. Not a straight forward swap though.
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buzzawak
- Settled in member
- Posts: 212
- Joined: Mon Apr 06, 2009 1:22 am
Re: Coils
dinodelta wrote:Coils break down slowly and the figure I remember being banded around was that if the original coils were still on the bike at 20k miles, you would probably have a power loss of around 10%. The modern 'coil pack' type are a lot more efficient and last better. Not a straight forward swap though.
More interesting dinodelta, Coils are now back on my to do list.