1986 vfr700 moving oil cooler

Discussion in '1st & 2nd Generation 1983-1989' started by George_Washington, May 18, 2019.

  1. George_Washington

    George_Washington New Member

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    New to the forum, hello. https://imgur.com/IWkzOty not sure how pictures work.

    My bike has been a basket case for multiple po's and between the lot of us it's road worthy again. Long list of fixes and replacements, but she rides better than I could have hoped. The plastics are missing or trashed so I'm hoping to turn it into a era stock naked like a hawk gt big brother. A hawk double-wide, if you will.

    Anyway, I'm not sure how to move the oil cooler. A smart man told me these don't have high pressure through the cooler and the beefy high pressure stock tubes aren't necessary. The bike runs cool enough that it seems like the oil cooler isn't even necessary, but I want to ride a lot of miles on this. Haven't been able to find any relevant info.

    Has anyone move or altered the oil cooler? What do?
     
  2. squirrelman#1

    squirrelman#1 New Member

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    not clear why you'd want to remove it ? :pinky:
     
  3. George_Washington

    George_Washington New Member

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    Oil cooler mounts to a massive front bracket which everything else (headlight, gauges, etc.) attaches to. Only thing I'm unsure about changing is the cooler.
     
  4. squirrelman#1

    squirrelman#1 New Member

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    oil cooler helps alot in hot weather, stop-and-go traffic to keep engine cooler.
     
  5. George_Washington

    George_Washington New Member

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    I do not want to remove the cooler. I want to move it.
     
  6. Captain 80s

    Captain 80s Member

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    Move it where ever you want then.
     
  7. George_Washington

    George_Washington New Member

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    Yes, that's the plan. My searches for moving the cooler, altering the feed lines, or a simple cooler delete are all coming up empty. I was hoping someone here had insight or experience in this department. Sorry if I wasn't clear.
     
  8. Allyance

    Allyance Insider

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    I have had a Lockhart oil cooler since 1984, this is the only place I could mount it. It has healthy flexible braided lines, so I wouldn't scrimp on new oil lines. Have no idea how effective it is, but my 8th gen has one in the same location. Picture is my '83 during resoration. Color scheme is an '84 from used parts I bought. IMG_1190.jpg
    Oil cooler under headlight, small radiator is for coolant.
     
    Last edited: May 19, 2019
  9. Captain 80s

    Captain 80s Member

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    Because nobody else has wanted to do it. Blaze the path. Find the fittings, make the lines, go sick.
     
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  10. sixdog

    sixdog New Member

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    Last edited: May 19, 2019
  11. Allyance

    Allyance Insider

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    The Lockhart used an adapter that between the oil filter and the engine. Braided lines were connected to fittings in the adapter.
     
  12. squirrelman#1

    squirrelman#1 New Member

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    just stop. there's no good reason to move it. VFR's with so many wires, bottles, cables, coils, tubes hanging out don't make tidy streetfighters, as we all know.

    if you move it lower, it picks up heat from the exhaust pipes, not helpful.
     
  13. NorcalBoy

    NorcalBoy Member

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    My thoughts exactly. If you wait for universal consensus around here, you're wasting valuable time. Go forth and conquer.
     
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  14. George_Washington

    George_Washington New Member

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    Alright, sounds like it'll be an adventure. At least it's mechanical and no more electronic sorcery to combat.

    Thanks for the kick in the pants all. I'll try to update as I encounter catastrophes and find solutions.
     
  15. George_Washington

    George_Washington New Member

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    A few days ago I came across a thread on a street fighter forum discussing oil cooler relocation on 2nd gen vfr's while looking for something else. It led to other threads with pertinent info. I'm too lazy to look up the rules on linking to other forums so just reporting findings for now.

    Several people reported just hacking the lines apart. It's common to just cut both metal tubing and braided hose to fit the new location. Flaring the metal tubing and clamping the cut braided hose over the flare is supposedly an adequate fitting. Apparently the pressure through the cooler is low enough that a proper fitting isn't necessary. It's popular to build a bracket to mount the cooler to the front valve cover bolt locations with longer bolts and washers to account for the spacing. Both of these ideas seem like quick hack jobs and I want some redneck precision.

    The lower radiator mounts would be better mounting points, but that requires a dizzying bracket of two bends instead of just one. The radiator mounts already have rubber bushings like the cowl bracket, so bingo. Also, the radiator is designed to swing forward so another sheet metal bracket nestled in there shouldn't bother anything. Bango. It leaves more space between the cooler and exhaust pipes, but might be too far for the front wheel at compression. Nothing that a few iterations could fix, so I'll cut a couple different brackets when work is slow and see what fits. I'm hoping to find a semi-accurate way of cutting the lines and adding decent fittings at home, but haven't looked into it yet. I got a second set of cooler lines from the ebays in case I mutilate something in the process.

    Should probably start a build thread, but hot damn this bike is so much better than I expected. Every time I ride she begs for more money to make her pretty, and I lovingly oblige. I managed to get some oem side covers for cheaper than expected while also starting a masochistic exercise of sanding hot tub blue paint off to reveal the rwb tank. Wings and a red stripe are visible, but damn the oem paint is tissue paper thin.[​IMG]
     
  16. George_Washington

    George_Washington New Member

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    Well, a modicum of success was found this summer. My budget went to the local vet, so I did a hack job that let me ride with some hiccups.

    Oil Lines

    Braided lines were cut with a hacksaw, tubing with a tube cutter and "flared slightly". The new fittings are sealed with 10 cent hose-clamps. Quality Hazard Fraught tools used in all operations, and all dimensions inspected with eyecrometers.

    Cut and flared
    [​IMG]
    Gauging braided length
    [​IMG]
    Routed
    [​IMG]

    I was worried about cutting the braided line, but it cut fine. Wrapped it with masking tape, marked the location, and sliced right through. Surprisingly no signs of oil leaking, but the braided ends are scraggly.

    Brackets

    First iteration was as simple as possible with no bends. Straight shot from the lower radiator mount down. It was a bit too thin/flimsy and buzzed at 4-5k rpm, but nicely fit in with the brickish freight train front end.
    Rev A did not fit, Rev B shown[​IMG]
    Out Functioning[​IMG]

    Then disaster. Hit a bump and heard a chunk. Seemed ok, but started home to check it out. On the way I hit the brakes hard, and it got a lot less good.
    Rev B Failure[​IMG]

    So I cut a new bracket, same offsets and slightly beefier, and pushed it tight against the head. Got another fender off of ebay, and surprise it happened again.
    Rev C Failure[​IMG]

    On to a new longer bracket. I never quite found the bolt spacing on the lower radiator mount. It's somewhere between 300mm and 305mm, but also not 12.000".
    Rev D - flat[​IMG]
    Two bends be damned we can do this with one. Bent at 45°, then the hoses pushed it out a bit. Tubing shortened again for the new location.
    Rev D - bent[​IMG]

    ...and it seems to be working! Besides a bunk ignition coil and stator connector fire, she's done another couple hundred miles without issue. We've gone over the problem bumps that broke her before, and she rides out triumphant. Although the front springs need some more gusto. Now that the cooler is out of the way, the fender smacks into the front brake manifold.
    [​IMG]

    All the brackets were made with .090" 3003 Aluminum which is pretty whimpy. It kept most of the steel parts from getting hurt when things went wrong. I'm keeping my eye out for something more rigid now that the location is proven. There's still a little buzzing to work out.

    Anyway thanks for the kick in the pants you codgy geezers, I needed it. Hopefully I can throw more money at this next year and get something nice put together.
     
    chuntera likes this.
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