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 Post subject: Re: drz400....im at my wits end
PostPosted: Mon Jan 30, 2017 10:55 am 
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125cc
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Joined: Mon Nov 14, 2011 9:38 am
Posts: 209
Cams can only be 180 degrees out if the ignition firing point is derived from the camshaft, but this is probably impossible to do, as the trigger device is most likely keyed to the camshaft.
Virtually all single cylinder engines have the ignition derived from the crankshaft, so have an extra 'wasted spark' at the end of the exhaust stroke, which effectively becomes the ignition spark if the cams are 180 degrees out.


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 Post subject: Re: drz400....im at my wits end
PostPosted: Thu Feb 09, 2017 9:33 pm 
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125cc

Joined: Sun Nov 10, 2013 3:28 pm
Posts: 144
Location: yeovil
bluezie wrote:
Cams can only be 180 degrees out if the ignition firing point is derived from the camshaft, but this is probably impossible to do, as the trigger device is most likely keyed to the camshaft.
Virtually all single cylinder engines have the ignition derived from the crankshaft, so have an extra 'wasted spark' at the end of the exhaust stroke, which effectively becomes the ignition spark if the cams are 180 degrees out.



thankyou all for your words.

ive exhausted all my knowledge and even a pro mechanic is stumped

I have bit the bullet and bought another engine. fed up with it sat in the garage..for £300 on a engine theres more fun to be had riding than getting stressed with it


Dan


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 Post subject: Re: drz400....im at my wits end
PostPosted: Thu Feb 09, 2017 10:26 pm 
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300 cc
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Give you £50 for the knackerrd one.


Sent from my iPhone using Tapatalk


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 Post subject: Re: drz400....im at my wits end
PostPosted: Mon Feb 20, 2017 10:58 am 
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Joined: Sat Apr 04, 2009 12:39 am
Posts: 1713
Location: Kent
How much do you want for it as is?


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