marki Posted May 27, 2016 Report Share Posted May 27, 2016 Hi All. Does anyone use the large bowl type pre filter with a Bosch pump ? Rather than the small glass tube type. My filter appears to cavitat and creat air. Cheers Mark. Quote Link to post Share on other sites
GT6M Posted May 29, 2016 Report Share Posted May 29, 2016 As bigg a diesel filter as ye can get. mine holds aboot 2 litres of fuel, acts as a swirl and a resovoir too. butt, need some home made pipes t,plumb it up. M M Quote Link to post Share on other sites
marki Posted May 30, 2016 Author Report Share Posted May 30, 2016 Thanks for the reply, I'm guessing this would be a canister type ? Something like this ? Cheers Mark Quote Link to post Share on other sites
Stag powered Posted May 30, 2016 Report Share Posted May 30, 2016 I have got 3 Triumphs on efi using the TR6 type of filter as a pre filter for the Bosch pump. Pipe size is in theory too small, but works far better than the glass tube type which just caused cavitation. Neil Quote Link to post Share on other sites
marki Posted May 30, 2016 Author Report Share Posted May 30, 2016 Hi Neil. Yes my glass type filter was causing cavitation. I'm guessing you are talking about the original filter ? Mark. Quote Link to post Share on other sites
Andy Moltu Posted May 31, 2016 Report Share Posted May 31, 2016 The Bullitt filter works well - has a coarse metal mesh filter option which is fine as a pre filter - large bore pipework and negligible effect on flow. I note that some of the kits now supply this option. There is a disposable paper mesh option but that's not required if you use the post pump high pressure filter. (The same supplier used to advocate enlarging the tank outlet whilst supplying the glass filter which had a far smaller bore than the tank outlet!) Quote Link to post Share on other sites
astontr6 Posted May 31, 2016 Report Share Posted May 31, 2016 (edited) Hi Mark! Bosch Pump 0-580-254-952 Info from 1993, as per Bosch. Fuel free flow rate that is required from tank to pump 2.6 Litres/Minute minimum! or up to 5 l/m. On a 1/2 tank of fuel with no pipework fitted you will get about 2.5 l/m!, in free flow! Bore size of pipework to be 10 to 12mm. I will let you draw your own conclusions from this info. Bruce Edited May 31, 2016 by astontr6 Quote Link to post Share on other sites
marki Posted May 31, 2016 Author Report Share Posted May 31, 2016 Thanks for the replies guys. I'll consider my options. Mark. Quote Link to post Share on other sites
Stag powered Posted May 31, 2016 Report Share Posted May 31, 2016 Hi Neil. Yes my glass type filter was causing cavitation. I'm guessing you are talking about the original filter ? Mark. Yes I am talking about the original filter, I had it so I thought I would use it, and it did the job! Quote Link to post Share on other sites
marki Posted June 2, 2016 Author Report Share Posted June 2, 2016 Had a run down to Poole last night more issues with cavitation. Any ideas appears worst after been stuck in tragic and ticking over for a while Mark. Quote Link to post Share on other sites
Mk1PI Posted June 2, 2016 Report Share Posted June 2, 2016 Put the PRV spill back into the CAV filter and then the tank Quote Link to post Share on other sites
JohnG Posted June 2, 2016 Report Share Posted June 2, 2016 Thanks for the reply, I'm guessing this would be a canister type ? Something like this ? Cheers Markimage.jpg Marki Please, don't use the Delhi one, it's contamination removal capability is terrible. I spent 30 years in the filter business and solved many, many problems by removing the standard fit filter in the fuel system and fitting a Racer replacement. Not only does the Racer unit remove the particulates, it will remove 96% of the free water contained within the fuel You can get the filter from ASAP Supplies in Beccles and, before anyone asks, I have absolutely no connection with ASAP Supplies or Racor. I have fitted Racer filters to 4 of my own boats (petrol and diesel) and the boats of 6 of my friends. The difference is, they work properly and do what they are meant to do. Quote Link to post Share on other sites
marki Posted June 2, 2016 Author Report Share Posted June 2, 2016 When you say put the PRV into the filter would this be before it goes back into the tank. Hi WJGCO Could this filter remove the ' air ' in the fuel ? Cheers Mark Quote Link to post Share on other sites
JohnG Posted June 2, 2016 Report Share Posted June 2, 2016 Marki No, not air It utilises a patented aquaphobic media; 'Aquabloc' It is extremely efficient at removing solids and water. I bought a narrowboat that had suffered with diesel bug, which is a direct product of heat, water and oxygen. Remove any one and you cure the problem I fitted a Racor filter and the problem went away The fuel system on my '6' is working well, but, when I make a change/upgrade, a Racor filter will be fitted. Quote Link to post Share on other sites
Mk1PI Posted June 6, 2016 Report Share Posted June 6, 2016 When you say put the PRV into the filter would this be before it goes back into the tank. Yes - let the PRV return feed the filter and any overflow return to the normal point in the tank - helps keep the pump supplied properly. Quote Link to post Share on other sites
JohnG Posted June 6, 2016 Report Share Posted June 6, 2016 Yes - let the PRV return feed the filter and any overflow return to the normal point in the tank - helps keep the pump supplied properly. Marki If you decide to use a Racor filter, talk to ASAP, there are different heads available, some of which offer up to 7 ports. Useful when running multiple flow lines Quote Link to post Share on other sites
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