Mediamab Posted January 11 Share Posted January 11 (edited) So next on my list is my fuel pump. Currently it’s the standard in tank version and my fuel lines looks like it’s made up of 10 pieces of pipe and pump is making some lovely noises at times! So im thinking of moving to Facet external fuel pump. My question is what part do I replace the fuel pump from the tank with? Is there an alternative part that’s just got the pipe? assume for fitting, pump should be as close to tank as possible and as low as possible and ideally angled slightly upwards? And then a filter I assume can sit in engine bay before the carb? thanks as always Edited January 11 by Mediamab Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 11 Share Posted January 11 Honestly I'd stick with the in-tank pump it's much neater and it's out of harm's way there. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 11 Share Posted January 11 Use an in tank, much quieter, easier and cheap. I have two red tops on mine, they clank away so.... So.... Much.... Almost painful. Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 11 Author Share Posted January 11 Ah ok this is useful to know assume advice then would just be to replace it with an original pump then? Is there a regulator that’s advised? I assume original fuel pump is pressured too high for carb? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted January 11 Share Posted January 11 An 88 V8 should have a low pressure fuel pump anyway, shouldn't need a regulator. Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 11 Author Share Posted January 11 4 minutes ago, Bowie69 said: An 88 V8 should have a low pressure fuel pump anyway, shouldn't need a regulator. Ah ok so just buying a direct replacement and replacing the lines should do the trick? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 12 Share Posted January 12 12 hours ago, Mediamab said: Ah ok so just buying a direct replacement and replacing the lines should do the trick? Yes. I can vouch that facets are noisy buggers, mine's under my seat and going back to an in-tank pump is very much on my to-do list! 1 Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 Is there a specific model of in tank that you guys would advise? And just to check even with my carburettor I would need a regulator? I’m pretty sure mine has one now but it may just be being used as a filter and regulator isn’t restricting… thank you!! Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 You shouldn't need a regulator but if you have flooding it could help fix it. Four barrel carbs haven't really been that successful for off road use. The factory system uses a full flow system which returns unused fuel back to the tank, keeping the fuel in the lines flowing and preventing problems with fuel heating and vaporizing in the lines. Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 PRC7019 should be the pump for a side mounted tank. Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 Ah ok great thank you!! So ultimately, even ignoring the noise, the original setup is best? And I’ll just replace pump and fuel lines? Is a filter integrated in the pump or worth having one before it hits the carb? Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 3 minutes ago, Paul C said: PRC7019 should be the pump for a side mounted tank. Is it worth spending the mega price on original vs remake which I assume is britpart? Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 I have been using aftermarket ones in my 110 for over 10 years without any problem. The factory one could be made by the same manufacturer anyway. You could by 10 aftermarket for the price of 1 just for different packaging. 1 Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 Just now, Paul C said: I have been using aftermarket ones in my 110 for over 10 years without any problem. The factory one could be made by the same manufacturer anyway. You could by 10 aftermarket for the price of 1 just for different packaging. The answer I was definitely hoping for haha Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 The pump has a gauze filter on it but it should have another filter between pump and carb. On yours most likely would have been in front of the tank on the bulkhead outrigger 1 Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 Ah ok great thank you that’s perfect, mine is there but looks different to yours which I think led me to think it also restricted flow. Sounds a good plan and cheaper too which makes me happy Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 https://www.lrworkshop.com/diagrams/land-rover-defender-fuel-air-emission-systems/fuel-system Good place to research what your factory system should be. I manged to find most of the factory lines for my 110 rebuild even with the twin tanks Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 Some of the early v8s had an external pump mounted there too I believe. Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 I’ll check but I’m pretty sure I’m not mistaking a pump for a filter! I’ll come back with tail between my legs tomorrow maybe ha! Thanks for all the info, super useful! Now I have the fun task of getting all the parts to order and give the truck some love finally. Just left with working out if tapping noise from engine is the exhaust manifold or something else! Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 12 Share Posted January 12 My 3.9 has a piston tap when it's cold, ever since I fitted it 10 years ago. Occasionally get exhaust leaks but noisy cam and lifters is common on older engines too. 3.9 upgrade is the best thing you can do. You can keep the injection on or as I did use the original carbs and manifold, your 4 bbl would probably work better on a 3.9 as they are a bit big for the 3.5. Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 12 Author Share Posted January 12 Yeah the tapping seems to happen as the engine gets warm and I know a number of people have mentioned common on 3.5 for exhaust manifold to leak and sound that way. My manifolds seemed to be held on with sporadic sized bolts and anything between 0 and 8 washers so part of me feels a leak is likely which I guess makes sense? Unsure what else I should explore though. Still learning about the v8 but its original so quite like to keep to it for now, not too fussed for that is low compression and doesn’t have a great deal of power ha Quote Link to comment Share on other sites More sharing options...
Paul C Posted January 13 Share Posted January 13 I have used 3.9 disco manifolds on mine since fitting the 3.9, also on the new 4.6, they flow really well, though I put mine into a single pipe straight after the manifold to increase the torque, the rangerover used twin pipes which increases the top end horsepower but doesn't gain as much torque. Originally used the Disco 1 front pipes, mine had the cats removed and they fitted straight on. 1 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 13 Share Posted January 13 19 hours ago, Paul C said: You shouldn't need a regulator but if you have flooding it could help fix it. No - if you have flooding that's a problem with the carb that needs fixing, not bodging round by messing with other stuff. The system doesn't need a regulator - what would it be regulating??? The carb float sets the level and everything else returns to the tank, pumping more or less fuel in the top doesn't change that. @Mediamab - honestly just stick with the stock pump & tank, it makes life so much easier and there's zero benefit in fitting anything else. Avoid Britpart, but that doesn't mean you have to buy genuine. 1 Quote Link to comment Share on other sites More sharing options...
Mediamab Posted January 13 Author Share Posted January 13 Well I was told it had a regulator fitted when the carbs were upgraded hence my question and I haven’t looked through fuel setup to check. I’d assume common sense if you have a high pressure pump that you’d need to regulate pressure, obviously I was wrong assuming my pump was high pressure i have no issues with flood ok appreciate a definite no. Just trying to ensure I’m replacing parts with the best and most reliable Quote Link to comment Share on other sites More sharing options...
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