Cams and cam removal

Discussion in '1st & 2nd Generation 1983-1989' started by Pepper, Dec 8, 2019.

  1. Pepper

    Pepper New Member

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    5F5B11AB-EEAE-4987-B8EE-A02817B53C4F.jpeg 0D16608F-5ED4-4108-AF8A-D5BB30C59E1D.jpeg Hi there new to the group I apologize if this has been covered. I have cams that need to be replaced was wondering what’s the best option. Send them to be resurfaced and ground ? Or are there aftermarket ones that can be bought? Also the front cylinder looks ok to remove the the rocker guides but the back looks like the engine might need to come out. The manual says that they can be serviced in the bike. If they can be serviced any help would be appreciated. The rear rocker bolts will not clear the frame to allow new guides to go in??

    Also is anyone familiar with the aftermarket oil filter adapter that routes oil to the top end with the braided lines??

    Thanks for any and all help
     
  2. raYzerman

    raYzerman Insider

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    Yep, had one on my Magna...... you need to find some of those old Sab/Mag forums
    http://www.honda-v4.com/sabmag/v4honda/oilmod-dd.html

    Just a comment if you're talking about pitted cams... read a lot about folks replacing them, but of all the pics I saw, most of it was simply casting porosity which when machined would expose a "pit".... I see no harm in that whatsoever.... more oil, certainly won't hurt, needed or not.
    OTOH, if the cams are scored, that's another matter altogether, yes replace. Sorry I don't know of anyone who restores cams, but I'm sure they're out there.
     
  3. Pepper

    Pepper New Member

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    Thanks a lot raYzerman yes the cams at least one is pretty bad.
     
  4. Lobotomy

    Lobotomy New Member

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    https://www.megacyclecams.com/catalog/catalog.pdf
    My understanding is that these folks are the best for our bikes. You will have to send them your parts to refurbish.
    I do believe the engine has to c0me out to get at the back cams. There are places in Canada that do cams and rockers
    but I would Go with Mega cycle. I have to do my rear cam this winter, hopefully.
     
  5. Pepper

    Pepper New Member

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    Hey there Lobotomy

    yes I’ve looked into the megacyclecams
    They want close to 900$ us for a set. I think that this might be the best option but very pricey. I have sourced another set of cams in better shape. Also in my looking I also found a low mileage motor complete with a head gasket blown. The complete engine also has the oil mod on it. I’m hoping that I will be able to have enough to put something back together. This will also leave me a spare cam set to have redone when or if need be at a latter date. The engine is arriving on the 22nd fingers crossed.
     
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  6. VF1000Fe

    VF1000Fe New Member

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    I did a full set of cams/followers a few years ago.
    [​IMG]

    Was pricey, but was a more permanent fix.
    The cams don't have air pockets in'em, they are just too soft.
    The Followers are Real Soft so Honda put a thick Chrome coating ON.

    Once you get thru the coating its short of this world;

    [​IMG]

    Note how the follower on right just burn'd thru.
    [​IMG]

    The one on the left is losing its Chrome.

    Megacycle grinds down the lobes and welds them back up with Stellite, should last forever.
    They will guarantee the cams Only if you also include the followers (same Stellite).
    Also include $50 for shipping, then multiply by 1.35 for exchange.

    They also put ON a more aggressive Profile than stock;
    [​IMG]

    If you use Used Honda parts you'll get the wear soon enough.
    15W40 Diesel is recommended.

    I have an Oil Mod on one of my spare engines, not gonna use it.
    Don't think oil up there is a problem.

    I did All the Valve Guide Oil seals, but still burns oil.
    Hand Lap'd the Valves & Seats.
    I did take advantage of the tear- down to grind a lot of aluminum out of the way (Porting).
    While your at it replace the O-Rings in the carb gas supply tubes (delicate) and Bench-Sync them.
    Most likely needs new Exhaust Valves & Guides (sloppy), but I'm not gonna bother, just add more oil, no more Touring on it.
    I ran a tube from the Oil Vapor Condenser Bottle down to the chain, get hot oil vapor for AutoLube,.
     
    Last edited: Dec 14, 2019
  7. Pepper

    Pepper New Member

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    All great points for sure. When I tear into the project I will assess the cams and guides and decide then.

    thanks for all the help I will continue to post here
     
  8. chuntera

    chuntera New Member

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    Pepper likes this.
  9. Pepper

    Pepper New Member

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    Thanks ChunterA

    I have sent a email off to them as well have you used them before or know of their work?
     
  10. chuntera

    chuntera New Member

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    I never used them but I know some custom work for they did for drag bikes in the 90s.
     
  11. Pepper

    Pepper New Member

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    Here is the progress report on the bike. I did call BC and they would redo the cams only not the rocker arms for around $575 Canadian . Went with second option parts engine plus a additional set of cams 489E4E8C-155F-41A7-A183-2A72DD55F93F.jpeg This was the flat spot on my cam that was causing all the noise



    2663675A-2A47-47FE-9458-14387ACED2C4.jpeg


    I found low mileage engine with a head gasket issue.
    Was able to replace my cams with this engine that were in great shape.

    80167E46-2B3F-4993-AF2D-145D17B0608D.jpeg

    As a bonus the donor engine was running the oil modification that I will now put on my engine.


    Cams are lined up and back in position . Next up is to set valve clearance and finish oil mod installation gaskets and re assemble.


    Thanks for the help folks will post when running
     

    Attached Files:

  12. raYzerman

    raYzerman Insider

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    Agree with your direction... it's what I would have done...
     
  13. Pepper

    Pepper New Member

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    Thanks yes picked up engine and cams around 90$ Canadian.... if need be I will have camshafts and rocker arms to send to mega cycle at some point. Plus have a few other spares lol
     
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  14. Pepper

    Pepper New Member

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    Ok before I close this engine up a question that’s probably been asked a thousand times..... I have the cams re installed at T1-3 all dashes front and back match with case and all identifying letters on sprocket bracket and camshaft are facing up..... at T2-4 the dots are all lined up as well...... I’m i good to go no binding turns free , set valve clearance at .005. The install in the manuals and such are a little confusing ..... not sure if the lobes are facing the correct way. I did not remove sprockets on cams just swapped out and put the same identifying marks up. 87A8E1F1-E1BF-45C2-8963-28221165F73B.jpeg
    Any confirmation would be appreciated
    Thanks
     
  15. Pepper

    Pepper New Member

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    image.jpg image.jpg Well she roared back to life just need to put fairings back on sounds fierce again.

    Thanks For All the help
     
    Gary Long likes this.
  16. Gary Long

    Gary Long New Member

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    I recognized your profile pick from the CVMG newsletter. Someday we shall meet. Happy New Year!
     
  17. Pepper

    Pepper New Member

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    Hey Gary

    Yes CVMG member as well. I see you have a 1985 vf750 . I think the camshaft issue was sorted out by that time correct?
    Happy New Years as well
     
  18. Gary Long

    Gary Long New Member

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    Auxiliary oil lines have been on for a long time. I don't know if it was bought new that way, a factory recall, or upgraded much later when serviced. Either way, no valve train issues............. for now.
     
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  19. raYzerman

    raYzerman Insider

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    Gary, that oil filter/line mod may be a Dave Dodge kit, very similar if not the same as the one I put on my '83 Magna VF1100C.
     
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  20. squirrelman

    squirrelman Member

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    :eek:
    no such luck :eek:
     
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