Jordk Posted January 22, 2014 Share Posted January 22, 2014 I'm looking into getting fittings and hose for my Zisco fuel rail. I already have the supplied hose and fitting from Rail-Filter.I'm now left with an AN10 hole in the rail. Obviously it'll need to be reduced to whatever size to then be taken from the FPR and then to the return. I was looking at changing all the hoses to braided ones but that leaves me with the return hose (hard pipe) what's best to do with that? Quote Link to post Share on other sites
Gary91 Posted January 22, 2014 Share Posted January 22, 2014 (edited) I've got 1 but not fitted yet. I bought braided hose and fittings from here http://stores.ebay.co.uk/Torques-U-K?_trksid=p2047675.l2563As for the return, I was just going to use the braided hose with jubilee clips. Or you could just use rubber hose from the FPR to return line. Edited January 22, 2014 by Gary91 Quote Link to post Share on other sites
Jordk Posted January 22, 2014 Author Share Posted January 22, 2014 Yeah dude that's the exact site I've been looking at, as going to get a aeromotive fpr too. The return line should be around 6.4mm and the AN6 hose measures around 8mm thus is theory the return would create a choke point/pressure area which could cause a few issues. Or so I'd think? Quote Link to post Share on other sites
Gary91 Posted January 22, 2014 Share Posted January 22, 2014 Hmm never really thought about that. Should be ok though because I've never heard of anyone fitting a larger return pipe to the tank. Quote Link to post Share on other sites
Jordk Posted January 22, 2014 Author Share Posted January 22, 2014 Not sure what to think tbh cant see why it's not worth a shot! Quote Link to post Share on other sites
AdamB Posted January 23, 2014 Share Posted January 23, 2014 I wouldn't worry about the size of the return line. I would dead head the fuel rail as well personally, meaning put the fpr on the pressure side as this keeps the fuel cooler and keeps octane high. Quote Link to post Share on other sites
Ricky@Race-Tech Posted January 23, 2014 Share Posted January 23, 2014 I beg to differ. The fuel in the tank might be cooler, but the fuel going into the engine wouldn't be as it would be sat in the rail until used. If the return line isn't big enough then the min base pressure will be higher. I wouldn't worry about the size of the return line. I would dead head the fuel rail as well personally, meaning put the fpr on the pressure side as this keeps the fuel cooler and keeps octane high. Quote Link to post Share on other sites
Jordk Posted January 25, 2014 Author Share Posted January 25, 2014 I beg to differ. The fuel in the tank might be cooler, but the fuel going into the engine wouldn't be as it would be sat in the rail until used. If the return line isn't big enough then the min base pressure will be higher. So if I was to increase the size of the return line for safest/optimum results? Wouldn't this require me running an an6 line all the way back to the tank? Any other methods you might recommend? Quote Link to post Share on other sites
AdamB Posted January 25, 2014 Share Posted January 25, 2014 I beg to differ. The fuel in the tank might be cooler, but the fuel going into the engine wouldn't be as it would be sat in the rail until used. If the return line isn't big enough then the min base pressure will be higher.Not every particle of fluid sits in the rail until the injector opens, it still gets pushed round the system, but I understand what your saying and that applies to where ever you position the regulator. I ment providing your reasonable with the return line it won't make a dramatic effect therefore not worth worrying about, the feed line I believe to be of more importance in getting the correct sizing. Quote Link to post Share on other sites
shorty Posted January 25, 2014 Share Posted January 25, 2014 (edited) I just cut off the hard pipe and used an an adaptor fitting from a local fluid transfer specialist to take the hard line from copper to an6 so i could run areoquip fuel line from there on. Most suppliers will stock what you need. A trader did sell me one too but not seeming to know their arse from their elbow on an conversion fittings i whent to a specialist instead. Edited January 25, 2014 by shorty Quote Link to post Share on other sites
Jordk Posted January 28, 2014 Author Share Posted January 28, 2014 Was that the hard line cut at the fuel tank end then adapt it there? Quote Link to post Share on other sites
shorty Posted January 30, 2014 Share Posted January 30, 2014 Nope, cut feed and return at the engine bay where they pop up into the bay then adapted from there. The stock lines are more than man enough for demand of fuel unless your going for 400+ id say, and even then they will probably be ok for a bit higher. Quote Link to post Share on other sites
Keri-WMS Posted February 28, 2014 Share Posted February 28, 2014 Jordan, are you getting PMs ok? :-) Quote Link to post Share on other sites
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