wobblegob Posted February 3 Posted February 3 Awdo chaps im hoping I've found my smoking issue.....my scavenge pump is a lower psi one 4to6 psi facet pump so ordered the higher pressure one. Now I've noticed that out of the breather pipe from the little reservoir goes all the way up to my catch tank on the side of my oilcooler. I've had fresh oil up into my catch tank , not breathed oil if you no what I mean. So I am thinking that my scavenge pump is not getting rid of the oil quick enough (for it to be coming out of the breather 18inch higher). It has got a non return valve between the res tank and my pump. Is this set up ok or is there a better set you guys can come up with. I ran it up on sunday and it started fine no smoke and ran fine blipping the throttle for a few minutes. Then started smoking .......which is leading to believe im not removing enough oil quick enough. Cheers chaps Quote
Gixer1460 Posted February 3 Posted February 3 Why use a 'higher' pressure pump? It doesn't need to build pressure - just flow a volume of 'waste' oil discharge. Although the pump may draw oil vertically, every time it empties the sump can it has to start again and the can vent won't help in that respect. Personally, I'd mount the pump down low / equal height to sump can so oil flow by gravity is constant and if you have a check valve, fit it AFTER the pump so pumped oil won't flow backwards after pump shut off. Sorry if reply seems naive - I have a crank driven mechanical pump so these electrical ones are alien to me LOL! 2 Quote
wobblegob Posted February 3 Author Posted February 3 (edited) 12 minutes ago, Gixer1460 said: Why use a 'higher' pressure pump? It doesn't need to build pressure - just flow a volume of 'waste' oil discharge. Although the pump may draw oil vertically, every time it empties the sump can it has to start again and the can vent won't help in that respect. Personally, I'd mount the pump down low / equal height to sump can so oil flow by gravity is constant and if you have a check valve, fit it AFTER the pump so pumped oil won't flow backwards after pump shut off. Sorry if reply seems naive - I have a crank driven mechanical pump so these electrical ones are alien to me LOL! Because I've been told that its not a big enough facet pump and it seems to not be returning quick enough Edited February 3 by wobblegob Quote
clivegto Posted February 3 Posted February 3 Could also try relocating the pump lower, just a thought. 2 Quote
wobblegob Posted February 3 Author Posted February 3 (edited) 4 minutes ago, clivegto said: Could also try relocating the pump lower, just a thought. Next to bottom engine mount ish ? Non Return valve before or after pump ? Edited February 3 by wobblegob Quote
clivegto Posted February 3 Posted February 3 Mount below the sump at the back right I have the none return value inline before the pump like most people have. Quote
wobblegob Posted February 3 Author Posted February 3 3 minutes ago, clivegto said: Mount below the sump at the back right I have the none return value inline before the pump like most people have. Any pics please mate Quote
clivegto Posted February 3 Posted February 3 Not to hand no just mounted from 2 back sump bolts with a bracket Quote
Gixer1460 Posted February 3 Posted February 3 34 minutes ago, clivegto said: Mount below the sump at the back right I have the none return value inline before the pump like most people have. Why before pump? Most check valves have a crack pressure which holds oil back before pump but if placed after the pump will easily overcome the resistance & stop any backflow! Quote
clivegto Posted February 3 Posted February 3 (edited) Less resistance for pump and it's always primed but as you say should work other side of pump too. Edited February 3 by clivegto Quote
Wee Man Posted February 3 Posted February 3 (edited) Mount it on the spare bolt holes on the underside of the frame. Twin exhaust used to bolt here. Edited February 3 by Wee Man Upside doon pic 3 Quote
peter1127 Posted February 4 Posted February 4 think the issue is the suction side because pump is too high and doesnt work if not primed as clivegto said. Mount it as wee man suggests: low, out of sight and still protected from debris Quote
wobblegob Posted February 8 Author Posted February 8 https://vm.tiktok.com/ZNRUvk9oG/ Well after a little playing today we seem to be smoke free, new higher pressure pump and reposition seems to have sorted it cheers chaps 6 Quote
94RF1146 Posted February 10 Posted February 10 My setup. BB turbo. Check valve in turbo feed / check valve after scavenge pump. zoom in. M. Quote
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