1. Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Simmy's Naked Turbo Project

Discussion in 'XJ Modifications' started by Simmy, Feb 25, 2017.

  1. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

    Messages:
    19,613
    Likes Received:
    6,703
    Trophy Points:
    113
    Location:
    The City of Seven Hills
    If it sat for a while then the rings could have got stuck from corrosion. Do the ATF/Acetone soak on the outer two cylinders and see what happens.
     
    sybe likes this.
  2. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    I agree k-moe, probably stuck rings, maybe some rust on open valve seats. The fact those cylinders do eventually build pressure leads me to believe it will start and run.
    Once the heat from combustion hits it it should be good, I hope.
     
    Chitwood likes this.
  3. jayrodoh

    jayrodoh YimYam Premium Member

    Messages:
    2,522
    Likes Received:
    1,102
    Trophy Points:
    113
    Location:
    Cleveland
    X3. Varying numbers on an unknown motor is nothing to worry about. Get them unstuck etc. and then run your usual tests.
     
  4. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    From Sunday to Wednesday, 3 days I've collected about 25 ml of oil leaking from the scavenge line, virtually nothing is leaking past the check valve on the turbo oil feed side.
    I emptied the measuring cup and we'll monitor this for a few more days.
    I will definitely be opening up the bottom of the motor to inspect the scavenge pump and it's o-ring seals.
     
    sybe and jayrodoh like this.
  5. JeffK

    JeffK Well-Known Member

    Messages:
    1,208
    Likes Received:
    81
    Trophy Points:
    48
    Location:
    Just North of Annapolis MD
    Simmy, I "believe" the only access is by splitting the cases. I've been using a check valve located right after the turbo on oil pipe #2 at the clip nearest the turbo. This solution, combined with a good, non-leaking #1 check at the oil filter means no more puddles under my turbo if it sits for a month and no more "blowing out the smoke" after taking off when it first warms up because accumulated oil. Two dollar solution for a PITA problem!!

    The pump acts like a small displacement pump and pumps in little surges so don't get freaked b/c it doesn't pump continuously.

    jeff
     

    Attached Files:

  6. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    For some reason I thought you installed an additional check valve before the turbo to supplement the OEM check valve. What you've done makes sense to me now as I've learned the oil is seeping on my bike through the scavenge line and nothing through the check valve on the feed line. Have a look at the parts schematic of the oil pump. Part #6 is labelled a gasket and #7 an o-ring. I thought this might be accessible with the bottom pan removed. I think Chacal lists both as available. Installing your check valve would certainly stop it. I checked the measuring cup I have under my motor again and can verify it is leaking 25 ml every couple of days. I need to do something.
    oil pump.JPG
     
  7. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    I pulled the oil pump out today.
    The 2 rubber seals I wanted to verify were both in place, the scavenge seal is hard but I don't believe it was the culprit leaking oil.
    I'll replace them anyway.
    I think it must be leaking through the pump itself. I'm planning to install an external check valve as Jeff K suggested.
    scavenge pump seal.jpg
    scavenge pump seal to oil pan

    oil pump seal.jpg
    oil pump seal to lower case
     
  8. JeffK

    JeffK Well-Known Member

    Messages:
    1,208
    Likes Received:
    81
    Trophy Points:
    48
    Location:
    Just North of Annapolis MD
    Simmy,

    From what I remember reading, the o rings on the shaft itself leaks and allow the oil to drip back to the turbo but I really don't know any more about it.

    Did you have to split the cases the get to the scavenge pump?

    jeff
     
  9. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    the pump is easily accessed once you remove the bottom pan. Once you remove the mounting bolts you can wiggle the sprocket off the drive chain.
    I've attached the schematic of the oil pump here and don't believe there are any o-rings on the shaft to replace.
    It has to be leaking on the swiping surfaces between the scavenge pump rotor and the pump housing.
    Your solution with the external check valve is fool proof and cheap at that. E-bay has them for a couple of bucks, you don't recall what size you bought do you?
    If I measure the OD of the oil return piping that should be the size needed right?
    The thick rubber gasket sealing the scavenge pump to the oil pan was hard. I have that on order from Chacal.

    oil pump schematic.JPG
    Meanwhile I sent my entire exhaust to High Tech Coatings near Windsor Ontario for a chrome like finish, everything from the head pipes to the mufflers, basically everything except the turbocharger. Anxious to see how it turns out.

    I have a 2nd set of engine covers at the local powder coaters, this way the motor is still sealed (once I put the oil pump and bottom pan back).
    Now the weather is turning nice I'm going to move the motor to the patio and sandblast the head, cylinders and top half of the cases. I bought one of those cheap sandblasters, its just an air gun with a container on top for the sand. Once I spray these areas with black engine enamel I can bolt the motor and frame together.

    I read on the Turbo forum a Walbro GSL395 fuel pump was recommended. Looking into ordering one of those.
     
    JeffK likes this.
  10. lostboy

    lostboy Well-Known Member

    Messages:
    1,225
    Likes Received:
    324
    Trophy Points:
    83
    Location:
    Tillsonburg, Ontario, Canada
    If you do enough sandblasting on the porch you will have your own private beach. Will you have this bike ready for Paris?
     
  11. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    Yea we’ll see how effective my $30 sandblaster is.
    I do expect to take it to Paris, probably in 2020
    At some point I need to focus on spring maintenance of the bikes I actually ride. Are you going to the swap meet Apr.27?
     
  12. lostboy

    lostboy Well-Known Member

    Messages:
    1,225
    Likes Received:
    324
    Trophy Points:
    83
    Location:
    Tillsonburg, Ontario, Canada
    I will be attending for the morning. The hunt for parts will start. I have to go to work in the afternoon to pay for the parts I find.
     
    Last edited: Apr 3, 2019
    MattiThundrrr likes this.
  13. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    while the high temp coater was sandblasting my parts he found rust perforations in the waste gate muffler (RH).
    He will attempt to braze this up with brass.
    I suspect relying on the waste gate to open doesn't always heat this side enough to rid it of moisture.
    I could run it without this side but a bike with a LH only silencer looks too weird to me. BMW has bikes like that.
    holes.jpg
     
  14. JeffK

    JeffK Well-Known Member

    Messages:
    1,208
    Likes Received:
    81
    Trophy Points:
    48
    Location:
    Just North of Annapolis MD
    Thanks for posting the info Simmy, I learned something new so I can go home for the day!

    jeff
     
  15. JeffK

    JeffK Well-Known Member

    Messages:
    1,208
    Likes Received:
    81
    Trophy Points:
    48
    Location:
    Just North of Annapolis MD
    Any progress lately?

    jeff
     
  16. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    XJ porn
    IMG_20190510_170114.jpg

    The entire exhaust except for the turbo housing is done in pseudo chrome.
    I'd like to put the Ducati pipes I have on it eventually. This is good for now.
    The oil pump is back together with new seals, next big task is painting the cylinders and head.
     
  17. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

    Messages:
    8,866
    Likes Received:
    1,780
    Trophy Points:
    113
    Location:
    The room where it happened
    Looks nice, how does it compare to original chrome, and can you explain a little more about what process is used?
     
  18. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
  19. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    I had no one strong to help me lift the motor outside so I set up a sandblasting tent inside my garage.
    It did a pretty good job containing the dust but it was too awkward and difficult to see what I was doing.
    I cut holes to stick my arms inside and cut view ports to see. I'm also gonna need a face shield, LOL
    I still need to move it outside for a final blast. The good news is my $30 sandblaster works pretty good.

    sandblast3.jpg
    sandblast2.jpg
    sandblast1.jpg
    I taped off most of the lower cases as the paint was still pretty good, easier to just touch up where paint is missing.
    Its only the cylinder block and head getting paint, all the removable covers are powder coated.
     
  20. Simmy

    Simmy Well-Known Member

    Messages:
    2,261
    Likes Received:
    1,126
    Trophy Points:
    113
    Location:
    Waterloo Ontario Canada
    Encountered a small son-of-a-diddly while removing the starter motor. The shorter of the 2 mounting bolts snapped off about 1/4" proud of the case.
    Normally this presents an opportunity for vice grips however this partial bolt sticking up prevented the starter motor from sliding out of it's O-ring seat.
    I lifted the starter motor just enough to saw the bolt off flush. Funny that just 2 weeks ago I restocked my tool chest with every size easy out available, in both the threaded and knife edge type. Started drilling into the bolt but that's as far as I got.

    I'm still prepping the motor for paint, been a slow process but once the motor is ready to bolt to the frame things will advance faster.
     

Share This Page