Hey Anders , its really good to see all these pics in one place I have seen most of this before over at mobacken but its a treat to see it all here and with english subtitles ;)an excellent job and top class machine work , thanks for taking the time to document this , an inspiration !
Hey Joe! Thanks a lot. I´ve seen some Google Translator links in the site stats and I figured that it was you checking in on the progress. =)
I made some progress on the engine today, I finished making the radius in the turbine exducer cover and drilled the bolt circle. Next up is to fit 6 M10 bolts to the turbine plate so the exducer cover can be bolted to it.
Last Edit: May 2, 2015 16:31:27 GMT -5 by Johansson
More work done on the engine today. I welded the turbine housing bolts in place and modified the turbine exducer shroud so the welds around the bolts will have enough clearance.
Here is a picture of the assembled engine so far, it is slowly starting to look like a gas turbine.
I also milled two ducts for bleed air holes to the back side of the turbine wheel, I know that John used 6x1mm holes but since an oil return channel in the bearing housing is in the way for a 360° hole pattern I decided to try two 2mm holes to begin with. If the shaft still gets a heating pattern I can just add a couple of holes.
Happy new year guys!
Last Edit: May 2, 2015 16:36:40 GMT -5 by Johansson
hello Anders! happy new year to you and everyone in here! how well is that Biltema pump doing in pumping oil?i have exactly the same pump for my project turbine as a fuel delivery pump and according to specs it is designed to pump diesel fuel OR water BUT if it functions to pump oil i might get another one as well for oil pumping! best regards/stephan
You mean my oil scavange pump, right? I don´t think that it is good for any usable pressure, it is originally built as a suction pump for boats and I will use it to suck the return oil out from the engine.
If you need a fuel pump you should use a Bosch EFI pump from a car, Biltema sells those as well for 500SEK. For pumping oil you should read Racket´s suggestion in the jet kick thread, a Subaru oil pump coupled to an electrical motor.
hello Anders! i know that that particular scavenge pump is originally used for marine application AND for intermittent duty only and i also know that its capacity are way too low to use as a lube pressure pump,for that i have another pump and i was planning to use a bosch EFI pump for fuelpump,i was only interested how wel it is for oil
hello anders! yes,you misunderstand me i think, my question was how good that biltema pump is fubctioning as an oil scavenge pump,because the oil is thicker than diesel fuel which it was designed for,thats why i was interested to know how well it is as a scavenge pump. but actually i know one guy which modifies bosch EFI pumps to use as pressure lube pump,he has run a holset truck turbo turbojet engine for over hundred hours by now,it functions perfectly! but i will only use the EFI pumps for my vapourizer fuel system. best regards/stephan
I don´t know yet if it will work or not, It sucks the oil out along with some air through the shaft seals but once the engine is running I have no idea if it will cope with the extra air bypassing the seals. Time will tell I guess.