scootlife Posted March 7, 2016 Report Share Posted March 7, 2016 I've just fitted some bike carbs to my pinto. Supposedly fully working but arrived in a box that looked like 20 elephants had sat on with a second set of carbs damaged with various pieces of metal at the bottom of the box. The cars fired up and currently have a regulator set at 0.5 psi but there is fuel dripping quite badly out carb overflows when running. Anyone had experience of this at all? Could the box being used as a football have caused internal damage to them? Link to comment Share on other sites More sharing options...
katana Posted March 7, 2016 Report Share Posted March 7, 2016 Usual suspect - float valves and float heights. Do you know what they are off? A picture would be useful. If someone gives spares then they've likely been apart and maybe re-assembled fubar! Link to comment Share on other sites More sharing options...
scootlife Posted March 7, 2016 Author Report Share Posted March 7, 2016 They are R6 carbs. Been running on a 2.1 Pinto . Gonna check needle valves and hopefully its just something silly. Just worried that as they've been chucked about by the courier that its something more sinister Will get some pics uploaded. Link to comment Share on other sites More sharing options...
aardvark101 Posted March 9, 2016 Report Share Posted March 9, 2016 Are they fitted on horizontally as i believe they should be angled up somewhat, same as on a bike ? Link to comment Share on other sites More sharing options...
scootlife Posted March 10, 2016 Author Report Share Posted March 10, 2016 yes fitted at an angle , they are keihin cvr carbs.. will check floats and valves and hopefully that will sort it . Runs lovely but just fuel dripping everywhere. Link to comment Share on other sites More sharing options...
Veemax Posted March 12, 2016 Report Share Posted March 12, 2016 do you know what model, year they came from?, i would check to see if the carbs originally sit at an angle, most bike carbs sit horizontal with angled inlet manifold rubbers, if you look at manifold rubbers for r6 on ebay they all are angled, so even if yr float height is correct you may be still wrong if the carbs are angled Pete.... Link to comment Share on other sites More sharing options...
katana Posted March 12, 2016 Report Share Posted March 12, 2016 do you know what model, year they came from?, i would check to see if the carbs originally sit at an angle, most bike carbs sit horizontal with angled inlet manifold rubbers, if you look at manifold rubbers for r6 on ebay they all are angled, so even if yr float height is correct you may be still wrong if the carbs are angled Pete.... Check out google images of installed R6 carbs - the inlets are virtually vertical. Angle rubbers are to get the angle even steeper no flatten it off. They were about the most extreme angle of any bike till efi became more widely used as injectors don't care what angle they are at. I'm still thinking float heights especially if the angles aren't exactly as the bike installation. Link to comment Share on other sites More sharing options...
Snapper Posted March 12, 2016 Report Share Posted March 12, 2016 My first start with bike carbs also spewed fuel out but this settled after a few mins Link to comment Share on other sites More sharing options...
robert maguire Posted March 12, 2016 Report Share Posted March 12, 2016 It must be catching .I too am fitting Keihin? Kawasaki zxr carbs to my Zetec to day and when I put pump on the fuel spewed out the top white T piece which I believe is breather and not fuel return. Link to comment Share on other sites More sharing options...
robert maguire Posted March 13, 2016 Report Share Posted March 13, 2016 How do I check the floats to see if they are stuck?? Or will light tap of screwdriver handle unstick them? Also the fuel was coming out the breather hose when needles/floats were stuck.Is this not fire hazard and any suggestions for overcoming the risk? Its approx 13mm breather outlet so could it be run somewhere in case of future sticky floats etc? Its just the coil/HT leads in under the carbs so bit risky or should I put coil elsewhere. (Zetec in mk2 escort) Link to comment Share on other sites More sharing options...
colr6 Posted March 13, 2016 Report Share Posted March 13, 2016 Not had anything to do with bike carbs on cars, but if your chucking fuel out the overflows like that pump pressure must be to high. You will need very little pressure as bikes are gravity fed and not pump fed on carbs. Have had quite a few friends suffer with carb leakage especially after winter storage. The float valves appear to be a delicate item and don't need a lot for them to pass fuel Link to comment Share on other sites More sharing options...
scootlife Posted March 13, 2016 Author Report Share Posted March 13, 2016 Glad its not just me !!! i wonder if re starting it may help ?? Maybe with the bowls full of fuel it may have freed off floats ? Gonna have a tinker later and will get the the bottom of it as they look good and first impressions are they will be well.. Once the leaks sorted !! Strip and clean then later if no better. Link to comment Share on other sites More sharing options...
scootlife Posted March 13, 2016 Author Report Share Posted March 13, 2016 Will try and get some pics and video up but seem to have been locket out of my photo bucket account Link to comment Share on other sites More sharing options...
Blue ass fly Posted March 13, 2016 Report Share Posted March 13, 2016 Are you using a bike pump Mine spewed when using a LP facet one but are perfect with a bike pump Bike pumps switch off when pressures up and no need for a reg Link to comment Share on other sites More sharing options...
robert maguire Posted March 13, 2016 Report Share Posted March 13, 2016 Hi Blu Ass ,thats interesting that they switch off when pressure reaches it max.Presume they are strong enough to drive Zetec but I would think so Thanks Colr6 you are correct as I was using Mazda mx5 pump(injection) inline just to see if it would fire up.I have electric aftermarket pump but the bike pump suggestion seems good?? Link to comment Share on other sites More sharing options...
scootlife Posted March 13, 2016 Author Report Share Posted March 13, 2016 Im actually still using the pinto mechanical furl pump with a Sytec fuel regulator. I have it set right down to 0.5psi at mo !! It started at 2psi but even reducing it had no impact. I didn't know about the bike pump switching off and you can get new replacement R6 pumps on eBay for £20 so think thats gonna have to be looked at . Blue Ass In see you in East Mids too? Where abouts? Link to comment Share on other sites More sharing options...
katana Posted March 13, 2016 Report Share Posted March 13, 2016 Personally i'd try and get an R1 or FZR1000 or CBR900RR pump as they used to produce about 145-150hp so would just about keep up with a Zetec..... the R6 was good for 100-105hp so could starve the float bowls. The pumps are call interupter as the back pressure on a shut float valve is enough to stop them. They are low pressure 0.5-1.0psi tops but high flow, most have 8mm outlets and are generally reliable if used to push fuel, not suck! Link to comment Share on other sites More sharing options...
robert maguire Posted March 14, 2016 Report Share Posted March 14, 2016 Thanks Lads,sounds like bike pump is the way to go. Link to comment Share on other sites More sharing options...
Blue ass fly Posted March 14, 2016 Report Share Posted March 14, 2016 Hi scoot Ime near measham Ebay is the cheapest route for new pumps as bike outlets want the earth Katanas spot on with his info Fit it right by the tank outlet as low as poss I used a cbr600 pump and carbs on a rs1800 zetec and never had an issue I used 10mm fuel lines Link to comment Share on other sites More sharing options...
katana Posted March 14, 2016 Report Share Posted March 14, 2016 Ain't a biker for nothing! Link to comment Share on other sites More sharing options...
DT36 Posted March 14, 2016 Report Share Posted March 14, 2016 I have a Fireblade pump on mine, no issues. This switches itself off when it reaches pressure. Link to comment Share on other sites More sharing options...
Snapper Posted March 15, 2016 Report Share Posted March 15, 2016 I have a Facet silver top through a Malpassi Filter King running about 1.5psi with no issues Link to comment Share on other sites More sharing options...
Blue ass fly Posted March 15, 2016 Report Share Posted March 15, 2016 I think most of the carbed bike pumps are the same , maybe just the plug being different Link to comment Share on other sites More sharing options...
robert maguire Posted March 15, 2016 Report Share Posted March 15, 2016 I ordered the interuptor type pump from DanSt engineering and it has 8mm inlet/outlet but Dan sems to know his buisness so I got 8mm plastic hard fuel line with just rubber/reinforced braided interior, for both ends (carbs and pump).Any advise Link to comment Share on other sites More sharing options...
scootlife Posted March 16, 2016 Author Report Share Posted March 16, 2016 Heres another question then ??? If I use a bike pump, which appear to have a plug with 2 wires ( assume neg and pos) will I need a relay or can I just find a live and earth and have an inline fuse ?? Cant say car electrics are my strong point, so if I need a relay any ideas on what would go where ?? Cheers again Rob Link to comment Share on other sites More sharing options...
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