Revolution Posted May 8, 2013 Report Share Posted May 8, 2013 Have just ordered a replacement pipe from Rimmer Bros and the diameter of the copper pipe they have sent is smaller than the original Will this affect the performance of the pump/carbs or is the pipe diameter incidental? They have included a union nut and olive at each end of the pipe even though the pipe only requires one nut/olive to screw into the fuel pump outlet (AC mechanical) Before I start shaping the new copper pipe - any thoughts / advice please? Thank you very much Nick Quote Link to post Share on other sites
RogerH Posted May 8, 2013 Report Share Posted May 8, 2013 Hi Nick, the pipe into the carb is 1/4" dia. therefore you need a 1/4" pipe from the pump so that the rubber connector will fit. Few rubber pipes are 1/4 at one end and 5/16 at the other. Make sure that the level of the copper pipe that runs along the rocker cover is slightly uphill towards the front - to allow air to flow uphill. If you are going to fit an inline filter anywhere you need to think about this before bending/cutting/screeming and crying. I have a horizontal glass filter fitted in the run over the top of the alternator. Roger Quote Link to post Share on other sites
Revolution Posted May 8, 2013 Author Report Share Posted May 8, 2013 Thanks Roger Interesting coz the pipe I took off the car was 5/16" bore - wonder if the bore was oversized whether it was contributing to my "carb floodding" problems I had Looks like they've sent me the right pipe anyway @ 1/4"! Good point about the inline filter - had a look on E Bay, millions of them! What you using on your car? Nick Quote Link to post Share on other sites
RogerH Posted May 8, 2013 Report Share Posted May 8, 2013 Hi Nick, most people fit a 5/16" pipe from pump to carb because the outlet of the pump has a fitting that takes 5/16" pipe as the norm. A 1/4" pipe union is available if you look for it. The problem, as I mentioned, with the 5/16" pipe is marrying up to the carb pipe - which is a 1/4". The carb shouldn't flood due to the larger pipe. However if it did flood it would be biblical. I use the glass filter with the chrome )removable) ends. These take 1/4 or 5/16 pipe. It would be nice if they had a screw end thus removing all the rubber from the system. Roger Quote Link to post Share on other sites
ChrisR-4A Posted May 8, 2013 Report Share Posted May 8, 2013 Hi Nick, most people fit a 5/16" pipe from pump to carb because the outlet of the pump has a fitting that takes 5/16" pipe as the norm. A 1/4" pipe union is available if you look for it. The problem, as I mentioned, with the 5/16" pipe is marrying up to the carb pipe - which is a 1/4". The carb shouldn't flood due to the larger pipe. However if it did flood it would be biblical. I use the glass filter with the chrome )removable) ends. These take 1/4 or 5/16 pipe. It would be nice if they had a screw end thus removing all the rubber from the system. Roger Roger, how often do you replace the element on the glass tube, I had one of these and it closed up after about 18 months use. You could not see it was blocked but I could hardly blow through it and it caused the engine to stop. Quote Link to post Share on other sites
RogerH Posted May 8, 2013 Report Share Posted May 8, 2013 I've had mine fitted for a little less than 2 years. Fuel is still flowing through very well. I also have the filter in the pump filter bowl fitted so as to remove the big stuff. I understand that they can be taken to pieces and cleaned Roger Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.