Powers 13 Posted January 30, 2006 I need to upgrade my fuel pump and am just enquiring whether anyone on the forum has upgraded theres. The two options are: An up rated fuel pump that replaces the original and sits inside the tank. Cost around £100. An up rated fuel pump that sits inline with the original. For rally regulations I dont think the fuel pump can go inside the cabin, so it will need to take up room in the engine bay (A big negative). Such examples cost upwards of £150 from the US. I know that the standard fuel pump flows enough for 250 bhp so please no replies saying why! Cheers. Share this post Link to post Share on other sites
DrSeuss 0 Posted January 30, 2006 Surely its better to have a single item to go wrong then a combination of 2. I'd be tempted by the in-tank solution assuming all other issues are equal. Out of curiosity why! Share this post Link to post Share on other sites
Powers 13 Posted January 30, 2006 The engine will cause the fuel pump to be on the very limit, when fitted .So i would prefur to sort it out now. When the car is being assembled. Share this post Link to post Share on other sites
Jonmurgie 2 Posted January 30, 2006 (edited) Go with a second pump... you can then add in a surge tank as well and precent any fuelling issues Edited January 30, 2006 by Jonmurgie Share this post Link to post Share on other sites
boombang 2 Posted January 30, 2006 How about two 405 Mi pumps in parrallel? Working ones should be cheap and pretty easy to get hold of. If you run two on seperate circuits, coudln't you have a light on each to show its live - so if one pump stops running you'll at least be able to get off the stage by running the car on part throttle. Ignore me if this sounds stupid! Share this post Link to post Share on other sites
Powers 13 Posted January 30, 2006 Do i need a second pump inorder to run a surge tank? Share this post Link to post Share on other sites
Jonmurgie 2 Posted January 30, 2006 Yes you will... 1 pump to get the fule from the fuel tank to the surge tank, and one to take the fuel from the surge tank to the filter/injectors... It's usual practice to use the standard in-tank pump to fill the surge tank, then somthing like a facet to take it from the surge tank. Thanks how mine will be done anyhow Share this post Link to post Share on other sites
Powers 13 Posted January 30, 2006 Cheers Jon. Any idea what spec the pump will have to be? How you arrange the fuel lines etc. Share this post Link to post Share on other sites
PumaRacing 2 Posted January 30, 2006 I need to upgrade my fuel pump and am just enquiring whether anyone on the forum has upgraded theres. The two options are: An up rated fuel pump that replaces the original and sits inside the tank. Cost around £100. An up rated fuel pump that sits inline with the original. For rally regulations I dont think the fuel pump can go inside the cabin, so it will need to take up room in the engine bay (A big negative). Such examples cost upwards of £150 from the US. I know that the standard fuel pump flows enough for 250 bhp so please no replies saying why! Cheers. A big pump inline with the OE pump would be well pointless. You'll only ever flow as much as the smaller one can move. Before deciding whether you really do need a bigger pump measure the ouput of the one you have. Approx 0.5 litres per minute per 100 bhp plus say a 20% safety margin for wear and tear or jetting that's a bit on the rich side. OE pumps are usually ok for up to about 300 bhp on most vehicles. Share this post Link to post Share on other sites
veloce200 3 Posted February 1, 2006 Yes you will... 1 pump to get the fule from the fuel tank to the surge tank, and one to take the fuel from the surge tank to the filter/injectors... It's usual practice to use the standard in-tank pump to fill the surge tank, then somthing like a facet to take it from the surge tank. Thanks how mine will be done anyhow totally right except the swirl pot/surge tank is filled by a low pressure pump eg the facet and then the high pressure pump is fed from there. It wouldn't work the other way round. Share this post Link to post Share on other sites
Powers 13 Posted February 1, 2006 Ah. So i would need to buy two pumps? Or could i just fit a regulator after the in-tank Peugeot pump? Share this post Link to post Share on other sites
veloce200 3 Posted February 2, 2006 Ah. So i would need to buy two pumps? Or could i just fit a regulator after the in-tank Peugeot pump? I mentioned in an earlier thread you can just stuff you tank full of fuel foam - it's easy and cheaper than pumps and pots. I can run below a 1/4 with no surge with this solution. Share this post Link to post Share on other sites
Powers 13 Posted February 2, 2006 Thanks for the advice veloce200. My solution will be to upgrade the in-tank pump and baffle the tank to prevent fuel starvation. Where did you buy the foam from? Cheers. Share this post Link to post Share on other sites
