VF400F Revival

Discussion in '1st & 2nd Generation 1983-1989' started by ShaunVF400, Apr 20, 2021.

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  1. Colddevil

    Colddevil New Member

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    That's one heck of a carburetor to cut your teeth on! Really nice work.

    The relevant discussion (in a pretty disjointed thread) is on page 7 here: https://vfrworld.com/threads/matt-tries-–-1984-vf500f-overhaul.57900/page-7
     
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  2. ShaunVF400

    ShaunVF400 New Member

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    Cheers for all the feedback, and for pointing me in the direction of instructions on how to bench sync, much appreciated.
     
    Last edited: May 5, 2021
  3. ShaunVF400

    ShaunVF400 New Member

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    So back for another update, engine related this time. Now you see it.....

    now you don't.
    IMG_20210415_174854_649.jpg

    Removal of the rear head:
    IMG_20210417_110032_637.jpg

    IMG_20210417_110100_205.jpg

    IMG_20210417_114907_518.jpg

    IMG_20210417_123708_141.jpg

    Head off, ready for valve lapping (notice not all the head gasket wanted to come with the head) Cylinder on the left is the one that had low compression and wasn't firing:
    IMG_20210417_181439_623.jpg

    A first pass with the coarse grinding paste (before and after), a marked improvement already: IMG_20210418_183908_708.jpg
    IMG_20210418_184502_061.jpg

    IMG_20210418_183941_405.jpg

    IMG_20210418_184513_765.jpg

    As a side note, its when you look at someones profile picture and think "I recognise that bike" then realise Colddevil is the guy you've been watching on youtube for months for tips! (Exhaust collector box removal for one) cheers mate, great videos.
     
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  4. ShaunVF400

    ShaunVF400 New Member

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    Not much of an update today, but managed to score this beauty a little while back from eBay:
    IMG_20210426_044947_547.jpg

    And if anyone needs any of this info in the future:
    IMG_20210426_045032_422.jpg
     
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  5. Jim McCulloch

    Jim McCulloch New Member

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    WOW! There can't be many of those around anymore. Nice score.
     
  6. duccmann

    duccmann Member

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    So exciting to watch.
    Great job


    Sent from my iPhone using Tapatalk
     
  7. ShaunVF400

    ShaunVF400 New Member

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    So this might give away where I'm at at the moment, don't suppose anyone might happen to know the torque value for the four bolts that hold the cam tensioner in place (no mention in the service manual, assume it should be the same as the VF500).

    Thanks!
     
  8. Captain 80s

    Captain 80s Member

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    Should be the same. Yo can also go to the General section and they usually list common torque values for bolt sizes (6mm?).
     
  9. Terry Smith

    Terry Smith Member

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    This is the general torque values for the VT250F which I would expect to be very similar to the 400, same general vintage and layout.

    upload_2021-7-7_15-35-13.png
     
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