Tekira Posted January 26, 2004 Share Posted January 26, 2004 Hi, Iam in the process of installing triple mikunis and takind off extra weight, a/c, ehaust that sort a thing. Anyway i have to run the set-up like this. Tank---Pump-----------Regulator----carb----carb----carb.L.fitting The stock fuel system had two lines. One went to the mehanical pump then to carb and the other one went straight to carb. Could i run a single fuel line from the pump to the regulator or does the stock pump at the tank need two fuel lines. I would put some pics up but i cant figure it out right now Thx, Josh. Quote Link to comment Share on other sites More sharing options...
Synlubes Posted January 26, 2004 Share Posted January 26, 2004 Josh, Here is what I did with my triple webers. Tank - Filter - Stock pump - Filter - Carb - Carb - Carb - Back to return line. Using one big loop. I used a carb jet (in fuel line) to regulate my pressure and used the stock fuel lines for feed and return. I ran the supply hose in front of radiator to carbs, and the return hose along the firewall back to the return line. You can see some engine compartment pics by clicking the ZPics link in my sig. Quote Link to comment Share on other sites More sharing options...
gramercyjam Posted January 26, 2004 Share Posted January 26, 2004 What you have should work. I've got Tank - filter - stock electric pump - filter - fuel pressure regulator - carb - carb - carb. I've seen lots of variations though. Quote Link to comment Share on other sites More sharing options...
Tekira Posted January 27, 2004 Author Share Posted January 27, 2004 Ok, ill run the stock fuel lines up to the firewall then ill replace the line from there to the regulator because they are very rusted as they sit under the battery. Ok now the only question i have for the set up is how do i run the return line? do i have to and what is the purpose? Thx, Josh. Quote Link to comment Share on other sites More sharing options...
zcarnut Posted January 27, 2004 Share Posted January 27, 2004 Does anyone use the fittings on the _bottom_ of each carb? I assume that Mikuni put them them so you could route the return line through them, thus removing some heat from the fuel in the bowl. Quote Link to comment Share on other sites More sharing options...
z-ya Posted January 30, 2004 Share Posted January 30, 2004 Shouldn't it go: tank - filter - pump - filter - carb - carb - carb - regulator - return line This will maintain a contant pressure at the inlet to the float bowl. If you put the regulator before the carbs, the fuel line from the tank to the pump will be at the correct pressure, but the pressure at the carbs will not be consitant. Correct? Pete Quote Link to comment Share on other sites More sharing options...
gramercyjam Posted January 30, 2004 Share Posted January 30, 2004 If you are using a return line. Mines dead headed. Depending on your regulator it could be this too - regulator - carb - carb - carb Return line - tank Quote Link to comment Share on other sites More sharing options...
Guest jwa51 Posted January 31, 2004 Share Posted January 31, 2004 How bout if your running a vented to atmosphere fuel cell: Cell to Holley pump, to filter, to regulator, to homemade one in three out manifold, three lines to each carb. No return. Quote Link to comment Share on other sites More sharing options...
gramercyjam Posted January 31, 2004 Share Posted January 31, 2004 Thats pretty much the way mine is. It works fine. Just make sure your fuel pressure is _low_. 3 to 3.5 PSI for Webers. Mukinis should be similar. Quote Link to comment Share on other sites More sharing options...
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