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Sparky's winter/spring/summer/autumn work

Discussion in 'Members Projects' started by quattro, Dec 19, 2009.

  1. quattro

    quattro Well-Known Member

    A while ago, when searching for a slight rumble on the N/S front, I changed the wheel bearings to find there were some score marks around the stub axle under where the inner bearing sat. This allowed the inner bearing to rock slightly on the axle. I don't actually know for certain if this caused the slight rumble, but decided, against advice from this forum to bond the inner race on :rolleyes:

    This did make a difference, it got louder. Then, a long time later, I found a N/S upright in a scrap yard. They said they would take it off for me and I could pick it up whenever I wanted. When I got there they showed me this, in the pic below, and apart from the pickling of the paint, it looked perfect. So, I asked them if they had a N/S one :oops::rolleyes:

    [​IMG]

    Anyhoo, two hours later and covered in mud, grease and blood, I had the correct one. After a good clean up, I put a new set of bearings on it and they fit perfectly, although I can't quite get it off at the moment :)

    [​IMG]

    I haven't fitted it yet
     
  2. harveyp6

    harveyp6 Well-Known Member

    Ah, the old "N/S" "O/S" problem again.... Still I doubt you would have fared any better if you had asked for a LH one....
     
  3. quattro

    quattro Well-Known Member

    Next job, now I have finally got around to starting it is: -

    [​IMG]

    I really wanted a 2.88 LSD jag diff, but couldn't find one anywhere, so ended up bidding on entire axle on ebay. Surprisingly, I won the auction :) I can't remember how long I've had this and don't have many ideas on how to fit it yet (some but not many). I have however, taken it apart

    [​IMG]

    [​IMG]

    Diff out and ready to fit (ok it needs cleaning and perhaps an internal inspection) :)

    [​IMG]

    [​IMG]

    Anyone want any of this lot, make me an offer

    [​IMG]
     
  4. quattro

    quattro Well-Known Member

    I did actually check that it was the passenger side one before I went over, but his assurance didn't actually seem to be that confident, so I checked when I got there:)
     
  5. quattro

    quattro Well-Known Member

    I've got the calipers off, along with the discs, which are basically scrap :( (the discs, not the calipers). They were very fiddly to get at, heaven knows how difficult they are to get off when they are still on the car. I'll be rebuilding the calipers, new pads and discs so I can hopefully fit and forget. Then half an hour with a wire brush, and it looks like this:-

    [​IMG]

    The rear cover is off and I've had a delve inside. Turn the input pinion by hand and both output shafts turn smoothly and freely. Catch hold of one of the output shafts, and try to turn the other one, and I can't. Lock one of them with a bar and then try to turn the other with a two foot long bar, and I can do it but there is a good resistance and everything is very smooth with no roughness at all. I have turned the crown wheel round a few times and carefully inspected it, no chips or marks on any of the teeth. All seems well with that, within my limited knowledge of diffs, so I'll cover it up for now and fit it as it is when I'm ready :)

    [​IMG]

    I've also managed to get Sparky up on four ramps, so I can get underneath and start measuring and making plans of how to fit the diff. The ramps are all the same height, so any angles I'll be measuring should be the same. I hope :)

    [​IMG]

    Now, there is a a sensor on the back of the diff. Anyone knows what it does and do I need it?

    [​IMG]
     
  6. harveyp6

    harveyp6 Well-Known Member

    I guessed it's for the speedo, and a quick google would seem to confirm that.
     
  7. Gargo

    Gargo Member

    Not sure what Jag used the sensor is for.
    But, the diff will put your gearbox driven speedo out of calibration. Ever since fitting a Jag diff, whcih also has this sensor and if I get round to it, I'll make an electronic speedo that runs off this sensor. So keep it in there and I'll get back to you. :eek:

    Good luck fitting the diff, you'll enjoy it once fitted.

    If you have a torque wrench, see if you can measure the torque required to start the diff slipping? It sounds like you still have a fairly tight diff. See Tightening the LSD

    Gav.
     
  8. quattro

    quattro Well-Known Member

    Cheers Harvey, I was thinking along the lines of it registering slip, but speedo seems a lot more probable.

    Hi Gav, at the moment, the speedo reads 70, when I am doing 70. It is absolutely spot on. With the new diff it will read 70 when I am doing 75, so I will be sending it back to the place that recalibrated it when the LT77 went in. My son has my torque wrenches at the moment, but I'll have them back shortly, and will test the breakaway torque. I was down at Santa Pod recently and did have an urge to try out Sparky down the track at one of their "Run what you brung" events, but would be rather nervous to truly open him up bearing in mind I need to drive home :)

    Richard
     
    2453kevinowen likes this.
  9. quattro

    quattro Well-Known Member

    I know I'm jumping the gun here, but I've been looking at brake bias proportioning valves. There's some real cheapies, which I'll not bother with, some from Wilwood at around £50 or so, OBP which look to have the same manufacturer, Tilton ones at just over £100, and some really expensive ones.

    Anyone use any of these, are the Wilwood ones reliable?

    Richard
     
  10. cobraboy

    cobraboy Active Member

    On another car I fitted a cheap one and on applying the brakes they stayed on ! needless to say it went in the bin. I then fitted this one which has been good for a number of years. I have it tucked up under the dash.

    Tilton Knob Type Proportioning Valve UNF Threads

    PS
    Your build thread is excellent reading.
     
  11. quattro

    quattro Well-Known Member

    Cheers Mark, that's the Tilton one I was looking at. I will have think on that - it's not urgent.

    Thank you, I can't believe I started this in 2009 :) Where did those years go? :eek:
     
  12. Gargo

    Gargo Member

    We've fitted the Tilton knob type too and I'm totally happy with it. Once you get the balance correct, the balance sensitivity to adjustment is impressive.

    Keep going....
     

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