JaysZ Posted November 21, 2004 Share Posted November 21, 2004 I just ordered a Unisyn carburetor synchro tool. I opted to get this rather than the Colortune since it was much cheaper. Any tips on how to use this tool? I read up on a few good sites on how to tune my carbs without the Colortune and all they say is "use the Unisyn to..." Thanks! Quote Link to comment Share on other sites More sharing options...
260ZRED Posted November 22, 2004 Share Posted November 22, 2004 basicly, you just want the same vacum (I believe thats what the unisyn measures) for both carbs, at all load levels. Do a search there's some nice in-detail tips for tuning SU's all over the place... when you have vacuum readings that are identical for both carbs, then you can start to tune the mixture. you'll have a feel for it in no time, and you can certainly do it without colortune (what is that?) or the unisyn. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted November 22, 2004 Share Posted November 22, 2004 Colortune and unisyn do entirely different things. The colortune is used to set your fuel mixture. (for those that don't know, the colortune is essentially a sparkplug with a window in it so you can see into the cylinder, and set mixture depending on the color of the flame) The unisyn is used to balance your dual or triple carbs. The unisyn is a snap to use, just balance both at idle and at about 2000rpm or so. (use the set screw on the linkage to achieve a steady rpm above idle) After this is done (and take your time to get it right) you may still need to make mixture adjustments. That can be a bit more difficult, but can be done by ear fairly well. There is lots of info on the web about tuning mixture on SU's. Quote Link to comment Share on other sites More sharing options...
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