No - that's what "advance" is. The time it takes fuel to burn in the cylinders is exactly the same regardless of engine speed (roughly). Therefore the faster the engine is spinning, the earlier you have to light up the air/fuel mixture. The mission is to light up the mixture such that the point when it reaches the maximum expansion, the piston is exactly halfway down on the downstroke. However to achieve this, you light up the mixture BTDC or before top dead centre.. Have a read of the articles at www.pumaracing.co.uk for some excellent explanations of stuff like this. Specifically http://www.pumaracing.co.uk/chip.htm Martin stainlessilusion wrote: > If >the engine is trying to ignite fuel while the piston is still on its >way up-the engine won't run at all or kickback. -----Dani B. > > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/