ThreePointFive Posted February 18, 2013 Share Posted February 18, 2013 I'm just starting to get my MS build together (trying to work out what is missing from my engine has stalled it quite badly). I have been going through Microcat and I've noticed there are several fuel pumps for petrol Defenders, some specifically for EFI, some not I have the standard 3.5 carb in-tank pump, is this going to work with megasquirt or am I going to run into some issue with this? It's clearly defined as not being for EFI in the Catalogue, so any pointers would be a massive help. Yes, I did try the search function first. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 18, 2013 Share Posted February 18, 2013 Carb pump won't work, Nige has details on how to convert for EFI in his big MS build thread, I believe. It is pretty easy to do TBH, once you have a pump or two on the bench, you can make them any length you want by adding hose and a plate of steel/aluminium. Quote Link to comment Share on other sites More sharing options...
Quagmire Posted February 19, 2013 Share Posted February 19, 2013 http://forums.lr4x4.com/index.php?showtopic=77496 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 19, 2013 Share Posted February 19, 2013 Found my post on the subject as well: http://forums.lr4x4.com/index.php?showtopic=63968&hl=pump Quote Link to comment Share on other sites More sharing options...
rusty_wingnut Posted February 19, 2013 Share Posted February 19, 2013 I've got one I converted - would sell it to Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 19, 2013 Share Posted February 19, 2013 Lazy option - stick an inline EFI pump somewhere. Plenty on eBay for ~£30. Quote Link to comment Share on other sites More sharing options...
cosecon Posted February 19, 2013 Share Posted February 19, 2013 I fitted a volvo 850 pump I found on Ebay. I bought for £3 + 5 postage to Greece. It fits perfectly in place of the in tank carb pump with no alteration. It was same with this one,http://www.ebay.co.uk/itm/VOLVO-850-S70-V70-FUEL-PUMP-1993-2000-INCLUDING-T5-CARS-/221182063833?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item337f7a74d9 much lower price. I had to dismantle and fit. Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted February 19, 2013 Author Share Posted February 19, 2013 Very helpful, thanks guys. I don't know why the search function seems to find nothing I want when I use it. What is the reason why the carb pump won't work with EFI? I had thought that as long as it pumps, it would supply the engine, which would use it?! I might look at pricing up the 50th anniversary pump instead, as it's a LR part and wouldn't require any mods. I expect it's hideously expensive, in which case the RR EFi pump is my next favourite option. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 19, 2013 Share Posted February 19, 2013 Carbs need low pressure (<10psi) injectors need high pressure (~50psi). Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted February 19, 2013 Author Share Posted February 19, 2013 Well that explains that then. I think the RR in-tank EFI is the way to go having weighed it up, for the sake of some ali strip and a longer tube. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 20, 2013 Share Posted February 20, 2013 IIRC the fuel injection pumps runabout 100PSI, but the regulator on the fuel line drops it to 30PSI, which is what the injectors need, 7PSI, which is what I think the carb pumps produce just wouldn't produce enough fuel or spray pattern through the injector I don't know, but I expect the RR pump is a LOT cheaper than the 50th anniversary one, and as you say very easy to mod. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted February 20, 2013 Share Posted February 20, 2013 Yes, they are cheap. In fact, I think I have one here somewhere that I'd be happy to donate. PM me if you want it. Quote Link to comment Share on other sites More sharing options...
mikec Posted February 22, 2013 Share Posted February 22, 2013 I bought the rr I e off eBay,25-30 quid delivered. Seemed cheap enough Quote Link to comment Share on other sites More sharing options...
dirtyninety Posted February 22, 2013 Share Posted February 22, 2013 I've got three EFI RRC pumps that are working and could be donated Quote Link to comment Share on other sites More sharing options...
ThreePointFive Posted February 24, 2013 Author Share Posted February 24, 2013 Hi guys, thanks for the replies and offers of pumps! Have asked Mr. Reckless, will donate a few quid to the forum as it only seems right. Quote Link to comment Share on other sites More sharing options...
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