86 VFR orphan rescue

Discussion in '1st & 2nd Generation 1983-1989' started by chuntera, Oct 16, 2019.

  1. chuntera

    chuntera New Member

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    I decided to have a go at a 86 VFR700 that has been garage parked for over a decade.
    Single owner machine, with 20k miles, original bodywork included, came with boxes of spares, etc.
    Found it on local craigslist; had to outbid a breaker who wanted to part it out, the PO (OO?) let it go for $800. Even if it never runs again I can use the parts on my 87 VFR.

    My first order of business was to clean out the cobwebs and rodent stuffing from various crevices. I didn't see any rodent marks on the wiring so hopefully the mice were transients and not permanent residents.

    I would like to check if the engine rotates freely. I've done orphan rescues for small offroad singles. With those I would apply penetrating fluid to piston via spark plug hole and rotate crankshaft by hand.

    What is best approach for a multi-cyl v4 ? Can I turn over engine by hand ?
     
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  2. squirrelman#1

    squirrelman#1 New Member

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    click it into 3rd gear and push the bike, but some oil the cylinders first.
     
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  3. Captain 80s

    Captain 80s Member

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    The VFR has an o-ring sealed access plug on the right crankcase that will allow you to turn it over by hand if you want.

    Glad you saved it from a breaker, good luck.
     
  4. sixdog

    sixdog New Member

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    I bought this one in boxes....spent about a year on it. I am very happy I saved it and very sorry I sold it.... DSC01427.JPG DSC01424.JPG
     
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  5. RS125

    RS125 New Member

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    Always nice to save one. Either option given should be what you need
     
  6. chuntera

    chuntera New Member

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    Thanks for the great advice, I am by no means a professional mechanic.

    So far this hasn't worked. Does the starter motor need to be removed first ?

    I put a ratchet on this bolt while in neutral but so far nothing is turning yet.

    I pulled off the valve covers and the cams look good, no pitting.
    I poured some oil into the cylinders and topped up the crankcase. I think I will let it percolate for a week or two.
     
  7. chuntera

    chuntera New Member

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    Matching rear stand very nice :)
    The one I'm working on also has Kerker exhaust.
     
  8. jeremyr62

    jeremyr62 New Member

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    Try it in top gear then. The starter motor is on a clutch so you don't need to remove it. In top gear (6th) you should be able to rotate the engine by rotating the rear wheel by hand (just).
     
  9. chuntera

    chuntera New Member

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    A did a couple more lube applications via sparkplug holes then left to soak for a week. Motor still does not turn.
    I put a breaker bar on the 17mm bolt attached to RH end of the crankshaft. I can turn the bolt but not the motor. I also tried putting bike in 3rd gear and pushing but no joy.

    I am thinking next step remove the camshafts and see if motor will turn without operating the valves.
     
  10. squirrelman#1

    squirrelman#1 New Member

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    removing cams very unlikely to help. most probably piston rings stuck to cylinder walls.
     
  11. chuntera

    chuntera New Member

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    You are very likely correct.

    I don't feel there is enough mechanical advantage turning the starter clutch, I am also worried about shearing the bolt. I drained the oil and pulled the starter motor (looking for another point to torque on the motor) but I don't see an easy way to attach an extension to the starter gear.

    Ideally I want to put breaker bar on the end of the crankshaft. Would the stator rotor bolt be sturdy enough to handle a breaker bar ?

    I pulled the 4-1 muffler and front exhaust pipes. Photo below is what came out #2 front exhaust. The #4 front exhaust came out clean.
    [​IMG]
     
  12. chuntera

    chuntera New Member

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    After soaking for over a month the engine is still seized. Cylinders 2 & 3 have some movement, #2 would spit fluid out the sparkplug hole when I bounced the the starter clutch bolt. However no movement from cyls 1 & 4

    This weekend I removed the heads to see condition of the pistons. Both 1 & 4 had sludge buildup on top of the piston.

    This photo of the front 2 &4 cylinders was taken immediately after removing front head (#4 is on the left).
    [​IMG]


    The next photo is after quick cleanup of #4. Definitely rust on the cylinder walls. Possibly pitting of piston surface below the "MK" stamp and some carbon buildup around the exhaust valve.
    [​IMG]


    Photo of #2 cyl after wipedown with a shop towel soaked in MMO. #2 also has some rust on the walls
    [​IMG]



    Rear cylinders after removing the rear head (#1 is left in photo). The red fluid is ATF + Marvel Mystery Oil I used to soak the pistons.
    [​IMG]


    After cleanup #3 looks pretty good, no rust on the walls. Sorry I forgot to take a photo.

    #1 is close to top of its stroke so I can't see condition of the cylinder walls. #1 & #3 pistons cleaned up much better than 2 & 4.
     
    Last edited: Dec 15, 2019
  13. Jim McCulloch

    Jim McCulloch New Member

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    Are those acorns? Pretty industries rodent at work there!
     
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