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upgrading desmodue to dual spark!
Posted: Thu Feb 19, 2009 6:30 am
by ducapaso
Just linked from "forum desmodromico" : how to machine stock heads to place a second spark plug!
Just get drunk watching pics!!!
Re: upgrading desmodue to dual spark!
Posted: Thu Feb 19, 2009 9:18 am
by paso750
no links
With dual spark conversions you really have to know what you`re doing. If the timing is not set exact you can ruin your engine pretty fast.
Re: upgrading desmodue to dual spark!
Posted: Thu Feb 19, 2009 10:17 am
by Finnpaso
They have modified many 900cc Supersport(91-97) syl. heads for 2 spark plugs, but that is easier in that air/oil cooleed engine... Some of them used Harley coils.
Re: upgrading desmodue to dual spark!
Posted: Thu Feb 19, 2009 11:11 am
by englishstiv
main site link is here for those interested written English also available
http://www.desmodromico.com/homepage.htm
Re: upgrading desmodue to dual spark!
Posted: Fri Feb 20, 2009 7:02 pm
by ducapaso
here's the link! It didn't worked yesterday
The write about 350, 650 750 and 900 heads machined to place a second plug!
I have not enough time to read the entire topic
So busy by now!
http://desmodromico.forumattivo.com/off ... -t1917.htm
Re: upgrading desmodue to dual spark!
Posted: Fri Feb 20, 2009 8:46 pm
by persempre907
Unfortunately, it can't be read by not registered users.
I tried to register to that forum, but seems the administrator has to authorize me before I can read that forum.
Ciao
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 8:23 am
by ducapaso
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 8:25 am
by ducapaso
And this is from an american site...
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 10:07 am
by persempre907
Very interesting.
On a 900 engine, he has reached 92hp, from 78hp of the stock engine.
If someone needs the translation...
Ciao
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 3:21 pm
by higgy
So he has raised the compression to 13:1 with a new set of pistons,ported the head with new valves,added Benzene to the fuel as well as the additional spark
not your average street mod
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 5:15 pm
by Finnpaso
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 7:06 pm
by higgy
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 7:37 pm
by Finnpaso
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 11:09 pm
by Tamburinifan
What is the power difference between 2V 1000 & 1000DS?
I think dual spark is mainly for emissions, not power,
but what do I know....
Re: upgrading desmodue to dual spark!
Posted: Sun Feb 22, 2009 11:54 pm
by higgy
dual spark is strictly a flame propagation thing, related to higher octane fuels required for higher compression ratios.don't think anyone wants to go there ...again
that is why he adds green benzene in the 13:1 version of his mod
I don't actually think dual spark would add anything to a normal compression engine but it would sure be cool