bodywerx Posted May 11, 2011 Share Posted May 11, 2011 Hi guys, I am tring to tune my engine. My 17 engine was replaced with a 78 280 engine with a triple Weber carb setup. I know 1 of the 3 are out of sync. what kind of tool am I looking for? Can someone point me in the right direction. Thanks Dave Jones www.bodywerx.net Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted May 11, 2011 Share Posted May 11, 2011 I don't think you should dead head your fuel line like that. Use this tool: http://www.thezstore.com/page/TZS/PROD/TE/60-9976 Quote Link to comment Share on other sites More sharing options...
Lazeum Posted May 11, 2011 Share Posted May 11, 2011 Check this thread out, there's already tons of info in it. Check out also on Amazon and get some books: Weber Carburetors Weber Tuning Manual Quote Link to comment Share on other sites More sharing options...
kamikaZeS30 Posted May 11, 2011 Share Posted May 11, 2011 It's referred to as a "Uni-Syn" you can usually get them for about $30 or less. Basic theory of operation is that you want the carbs to float the little ball in the glass as high as possible but evenly between each barrel. Quote Link to comment Share on other sites More sharing options...
cygnusx1 Posted May 11, 2011 Share Posted May 11, 2011 (edited) Dead head fuel line seems to work well for me in both of my cars. I realize that there are "potential" problems with dead heading, but I have no issues. Speaking of fuel line, take a length of it, stick one end into the carb intake at idle, and listen to the other end. Make them sound the same and you are generally close enough...if you have a decent ear. It works. Alternatively, you can get close by looking down into the progression holes and visually adjusting the throttle stops so that the plates are all just downwind of the progression ports. Edited May 11, 2011 by cygnusx1 Quote Link to comment Share on other sites More sharing options...
Lazeum Posted May 12, 2011 Share Posted May 12, 2011 (edited) Dead head fuel line seems to work well for me in both of my cars. I realize that there are "potential" problems with dead heading, but I have no issues. Speaking of fuel line, take a length of it, stick one end into the carb intake at idle, and listen to the other end. Make them sound the same and you are generally close enough...if you have a decent ear. It works. I've got the unisync but I ended up using the hose technic. People "who know" (what they think) were amazed by the smoothness of my idle. They were all asking for the shop who tuned my carbs to get theirs tuned up as good "He might be good since he tuned 3 of them whereas 2 are already a pain" - this is the comment that came back the most.... People don't know (and I believe I know just a very little). btw, Unisync does not fit also in between my carbs & the shock tower making it very difficult to use anyhow. Edited May 12, 2011 by Lazeum Quote Link to comment Share on other sites More sharing options...
Canadianz Posted May 12, 2011 Share Posted May 12, 2011 (edited) Unisyns are well known for synching carbs, but there are better tools that are just as cheap. You can try looking up an STE style flowmeter. They are quite accurate and won't restrict air to the carb the way a uni-syn does when its in use. Here's an example Edited May 12, 2011 by Canadianz Quote Link to comment Share on other sites More sharing options...
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