Mikez31ss Posted March 22, 2010 Share Posted March 22, 2010 My car's PO installed a Carquest E8012S fuel pump just before I bought the car. The specs on that pump are 5-9 psi @ 75-100 LPH. In light of that info I think I'll go ahead and install an FPR and set the pressure at 3psi. I'm going to use a Holley 12-804 1-4psi FPR and add an inline gauge. Sound okay? I thought there was a Weber FAQ here so I searched but all I found was the one on jets. And a fine FAQ it is but it doesn't help here. Quote Link to comment Share on other sites More sharing options...
Lazeum Posted March 26, 2010 Share Posted March 26, 2010 (edited) You did not look good enough (it is not so easy, I admit it!) So here is a good thread about your concern even if the initial question is different from yours. Edited March 26, 2010 by Lazeum Quote Link to comment Share on other sites More sharing options...
Mikez31ss Posted March 28, 2010 Author Share Posted March 28, 2010 You did not look good enough (it is not so easy, I admit it!) So here is a good thread about your concern even if the initial question is different from yours. Thanks Matt. There should be some info there I can use. The irony is that I remember that post. You have any tips for setting Thackeray washers? I found some suggestions on a Lotus board that should be good enough to get them tensioned. I'm assuming there is some margin for error. Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted March 28, 2010 Share Posted March 28, 2010 Thanks Matt. There should be some info there I can use. The irony is that I remember that post. You have any tips for setting Thackeray washers? I found some suggestions on a Lotus board that should be good enough to get them tensioned. I'm assuming there is some margin for error. I use these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Cosx4&CategoryID=8&PartsectionID=46 and these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Misabx2&CategoryID=8&PartsectionID=46 Quote Link to comment Share on other sites More sharing options...
Mikez31ss Posted March 28, 2010 Author Share Posted March 28, 2010 I use these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Cosx4&CategoryID=8&PartsectionID=46 and these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Misabx2&CategoryID=8&PartsectionID=46 I like the looks of those Cosworth mounts. But...I just got some Thackeray washers and new spacers from that very same company. I got the plastic spacer and o-ring kits from them too. The ones you got look better. Not much difference in price either. I bought them on ebay. I should have googled Eurocarb Ltd to see the shop selection. I bought the spacers/o-rings because there had been leakage between the carb bodies and the intake manifold long before I got the car. Now I find that gas is coming out of two of the horns. I'm thinking I may need a gasket/seal kit. It isn't a big problem when the car is actually running but while I've been trying to get the electronic ignition going I've had the key on a lot with the fuel pump running and I think the fuel pump is too much for the Webers. I've since removed the fuel pump fuse while I work on the ignition but new gaskets and seals are probably a good idea. Any thoughts on that or suggestions on which kits to buy? Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted March 28, 2010 Share Posted March 28, 2010 It depends on which Webers you have...IE 40DCOE18 or 40DCOE151 etc. Also, are you deadheading the fuel to the carbs? Quote Link to comment Share on other sites More sharing options...
zbloke Posted March 28, 2010 Share Posted March 28, 2010 I use these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Cosx4&CategoryID=8&PartsectionID=46 and these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=Misabx2&CategoryID=8&PartsectionID=46 I used the Misab plates and Cosworth/Werner washer kits too, apparantly the plastic spacers with the rubber O rings are ok upto 40mm carbs, over that size the plastic spacer is so thin and weak the O rings don't allways make an effective seal http://img.photobucket.com/albums/v299/zbloke/Datsun%20240Z/28032010213.jpg Quote Link to comment Share on other sites More sharing options...
Mikez31ss Posted March 28, 2010 Author Share Posted March 28, 2010 (edited) It depends on which Webers you have...IE 40DCOE18 or 40DCOE151 etc. Also, are you deadheading the fuel to the carbs? They are 40DCOE18. I'm a total noob w/ carbs but I'm guessing that deadheading means no return line? There is no return line from the carbs but it looks like the car has a smaller return line alongside the supply line that has been capped off. I need to read through that entire thread that Lazeum linked to. I used the Misab plates and Cosworth/Werner washer kits too, apparantly the plastic spacers with the rubber O rings are ok upto 40mm carbs, over that size the plastic spacer is so thin and weak the O rings don't allways make an effective seal http://img.photobucket.com/albums/v299/zbloke/Datsun%20240Z/28032010213.jpg Yeah the Cosworth things have got to be easier to get right than fooling with a feeler gauge trying to get the thackeray washer tension and the spacer gap even. The heat shield makes it hard to even see the bottom of the carbs much less get a feeler gauge in there. Edited March 28, 2010 by Mikez31ss Quote Link to comment Share on other sites More sharing options...
Dtsnlvrs Posted March 29, 2010 Share Posted March 29, 2010 I like the looks of those Cosworth mounts. But...I just got some Thackeray washers and new spacers from that very same company. I got the plastic spacer and o-ring kits from them too. The ones you got look better. Not much difference in price either. I bought them on ebay. I should have googled Eurocarb Ltd to see the shop selection. I bought the spacers/o-rings because there had been leakage between the carb bodies and the intake manifold long before I got the car. Now I find that gas is coming out of two of the horns. I'm thinking I may need a gasket/seal kit. It isn't a big problem when the car is actually running but while I've been trying to get the electronic ignition going I've had the key on a lot with the fuel pump running and I think the fuel pump is too much for the Webers. I've since removed the fuel pump fuse while I work on the ignition but new gaskets and seals are probably a good idea. Any thoughts on that or suggestions on which kits to buy? I use these kits. http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=WE436-V&CategoryID=3&PartsectionID=102 and these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=41030.005&CategoryID=3&PartsectionID=57 Quote Link to comment Share on other sites More sharing options...
Mikez31ss Posted March 31, 2010 Author Share Posted March 31, 2010 I use these kits. http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=WE436-V&CategoryID=3&PartsectionID=102 and these http://www.dellorto.co.uk/merchandise/products_details.asp?PartNo=41030.005&CategoryID=3&PartsectionID=57 I put a fuel pressure gauge on today. The gauge reads ~6.5psi so I'm at least 3psi too high. I'm going to reread that thread and decide whether to try a FPR w/ or w/o a return line or just a return line. Quote Link to comment Share on other sites More sharing options...
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