No idea - but you can't just unscrew it - it hits a stop at both ends of travel. Plenty of used venturis in scrapyards over here. Actually need to get some throttle linkrods ($36 from houston) so off up in a day or two toa Volvo breakers 30 mins away. Think I'll nab some intake manifolds and a few throttle bodies too - maybe a few idlespeed motors as well. Expect to come away £10 poorer if previous visits are anything to go by. Martin > >>1. What is the size and pitch of the CO2 adj screw >>as mine is >>completely absent and causing the engine to run >>really rich. > 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/