http://forums.aaca.org/ en Sat, 21 Nov 2009 07:35:57 GMT vBulletin 60 http://forums.aaca.org/styles/aaca/misc/rss.jpg http://forums.aaca.org/ http://forums.aaca.org/f125/detroit-lubricator-carburetors-272254.html Tue, 17 Nov 2009 13:26:35 GMT I posted this on the AACA Technical forum and wanted to hear from the CCCA experts as well. As mentioned in past posts I have been chasing fuel... I posted this on the AACA Technical forum and wanted to hear from the CCCA experts as well. As mentioned in past posts I have been chasing fuel system problems on my 32 Cadillac V-12 in order to get it running dependably. The fuel pump has been rebuilt and I have run it both with and without the electric fuel pump. It runs better with the electric pump but still not smoothly and continues to backfire when coasting. This weekend I removed the fuel pump to check the actuator pushrod which had been suggested as the problem by a number of people. There appears to be no problem there as the rod is the correct length and does not show excessive wear at either end. So, I am left with the dual Detroit Lubricator model 51 updraft carburetors, which I also removed. These carbs were rebuilt by the previous owner and both look excellent on the outside but I have no idea what was done to them inside. The previous owner said he just cleaned them out as they had sat unused for a long time when he bought the car, but he did not check or change any adjustments such as float height, etc. My problem is I know very little about these carbs and do not want to touch them without some education. Does anyone have any literature, repair instructions, exploded views, etc. that they could copy and send? Has anyone personally rebuilt these carbs and could give me some insight on how to proceed? At minimum I need to know how to check and set the float height and how to baseline set the mixture needles so both carbs are synchronized, plus whatever other adjustments might be needed to get these running right. Any help will be greatly appreciated. ]]> CCCA - Tech Questions TexRiv_63 http://forums.aaca.org/f125/detroit-lubricator-carburetors-272254.html