***Cam Alignment Pic Requested*** | FerrariChat

***Cam Alignment Pic Requested***

Discussion in 'Technical Q&A' started by christopher, Jul 2, 2004.

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  1. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    Hello fellow "F"-Chatters,

    Ok, I've came to grips that I'll be replacing the '2' timing belts on my 79 308GTB. After downloading a couple of sites on how to perform the proceedure, I thought I'd give it a shot of doing it myself.

    I was wondering if anyone might have a picture on where the cam alignment marks should (look like) be at the conclusion of the proceedure? A few arrows to point out the markes would also be very helpfull. Also, where is the window (in relationship to the engine) for the flywheel mark?

    Any other advice on tricks to help with the job would greatly be apprecaited...

    e.g. Can you cut the old belts off etc....
     
  2. Sean F.

    Sean F. F1 Rookie

    Feb 4, 2003
    3,067
    Kansas
    Full Name:
    Sean F
    Get your engine at TDC as described in the numerous proceedures you've downloaded.

    Remove the CAM Covers. It will be obvious once you see them. In fact, you should be able to see the intake of the rear bank by removing the Oil Fill cap.

    Just try to look at them the same way when you take them off and when you get them lined up to put them back on. I noticed that if I looked at the front bank with a mirror (viewing from the passenger side) it looked 'pefect' but if I looked at them leaning over from the driver side they looked 'a little off'.

    Just note where they are when you take the belts off and try to get them back in the same place when you put them on. Know that they may not be EXACTLY perfect. If you want to get anal about it, you'll have to get a degree wheel and a dial indicator to get them perfect.

    Oh, and it's helpful to put a mark on the passenger side pulley at TDC with a black marker. If you're by yourself, it's easy to shoot past TDC and have to go around again twice.
     
  3. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    Hey Sean,

    Thanks for the input, what's TDC? Also if it's not perfect will it do harm?
    I've heard that when you apply the tensioners, there's a chance the the cams might be out-of-alignment? Will this cause a problem???
     
  4. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    Christopher

    It's great that you're keen, but the questions you are asking show you may be out of your depth, with potentially very expensive consequences.

    Try to find a mechanic that can do it for you, that knows what he's doing, and see if he'll let you help and/or watch.

    I'm happy to let customers come and see how things get done, but some spannermen don't like it of course.

    Many carb cars have external cam marks on the back edge of the cam surface against the back of the pulley. there is a factory tool that simply sits on top of the cams to show alignment.

    This removes the need to remove covers to check timing marks.

    Inside the oil filler, you can see the 1-4 inlet cam mark, so if you get the flywheel on TDC, look at the inlet cam mark, you can check to see if that one cam is ok, and ASSUME the others are, and simply replace the belts using your own external marks.

    Verify ignition timing both before and after as a back up to your work.

    ps.....you don't need all the ******** everytime you ask a question!!

    We'll still answer anyway!
     
  5. Mike C

    Mike C F1 Veteran
    Lifetime Rossa Owner

    Aug 3, 2002
    6,081
    Southeast USA
    Full Name:
    Mike Charness
    I'm with Phil... if you're unfamiliar with "TDC" (Top Dead Center) and don't realize that cams out of alignment definitely cause problems, then you might need more help than just text responses here... you may need to hand this over to someone with more experience as you're learning. It's a potentially critical job!

    And yes, please drop the "****" on your subject line.
     
  6. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    I basically understand the comcept, but was stumpped on the jargon of "TDC"
    Now it makes sense!

    Please excuse the past "*******", they were just to aid me in finding my thread. I've received a few complaints so by now I'll drop em'.

    Last Question:

    Where is the flywheel window in relationship to the engine?

    Thanks, Chris.
     
  7. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    Ok here's a test...

    Do you know where the flywheel is.....if so, you should really not need to ask where the window is, it is very obvious. If not, please see previous post!!
     
  8. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    Give the guy a break you guys! We all started someplace. The flywheel observation window is on the drivers (left) side of the engine right below the oil filter. It's covered with a small metal plate. In fact, when you change oil filters be careful not to let it drip all over that cover because you don't want to get oil in there.

    I agree with the guys here though, do some serious research and reading before you do this yourself. If you mess it up, you have a very expensive fix. But this ain't rocket science. Take the belts off and put the new ones on with everything in exactly the same position with respect to each other that you started. Always replace the tensioner bearings at the same time.

    Remember that each 2 complete turns of the crankshaft equals only one complete turn of the cams. (If you don't know why, you DEFINITELY need to do a little more reading before you tackle this puppy!)

    My advice? Find an Fchatter in your area that knows what he is doing, buy him dinner and pick his brain. I am lucky to have the guru Verell here in MA who has helped me out so much. If you are like me, you will also gain a friend.

    Thanks Verell!!

    Birdman
     
  9. Darolls

    Darolls F1 Veteran
    BANNED

    Jul 2, 2003
    7,782
    Full Name:
    Sparky
    Chris-

    Perchance, are you in the Chicagoland area?

    If so, will be happy to give you some hands on help.
     
  10. ferrarifixer

    ferrarifixer F1 Veteran
    BANNED

    Jul 22, 2003
    8,520
    Melbourne
    Full Name:
    Phil Hughes
    Believe me , we are giving him a huge break.

    I wish somebody had given me this sort of quality advice when I learned some very expensive lessons in my life........

    Financial advice like this usually costs thousands.........
     
  11. Fiat Dino 206

    Fiat Dino 206 Karting

    Apr 19, 2004
    144
    Mississippi
    Full Name:
    David
    Christopher:

    I went back over your posts and believe that you are in Southern California?

    If this is correct, you may want to post that you are looking for a "Chat" member in your area to give you a hand on your first time around on the belt change.

    There should be members in your area that can give you some advice and support through the project.

    It is not a terribly difficult project in terms of work, just terribly important that the project be done correctly.

    If you don't have a workshop manual, you may be able to download one through:

    https://www.owners.ferrari.com/cgi-bin/Feros/os/jsp/01_0_login.jsp

    You will have to register your car with the site, but the information will help you with your project.

    Come on you guys in Southern California ... saddle-up that white horse and ride to the rescue!
     
  12. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    To: Phil & Mike,

    Thank you very much for your concern. It's appreciated! I spent several years aquiring the funds to find the right car, and I don't want to trash it! I will be sourcing some guidance on this one.

    To: Birdman, Darolls & Fiat Dino 206,

    Thank you for your compassion and patience with a new guy!

    I'm not a mechanic but am very detailed and have the understanding of the system. I very much apprecaite your guidance, anything else you could offer is GREATLY appreciated!

    Repsectfully,

    Chris L.
     
  13. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    Christopher,
    It would also be extremely helpful if you would put some information in your profile, the least of which should include the model and yeat of your car and the general area where you live. This information makes it a lot easier for others to help you.

    Birdman
     
  14. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    I was waiting to take a pic of my car as to include in the profile. But the car is in the my garage in pieces........

    I will very soon! Thank you again!

    Chris.
     
  15. Mike C

    Mike C F1 Veteran
    Lifetime Rossa Owner

    Aug 3, 2002
    6,081
    Southeast USA
    Full Name:
    Mike Charness
    If you have the opportunity, do take advantage of the offers for hands-on help. If you don't have a workshop manual, you will find it's very worthwhile, with lots of pictures, specs and how-to directions. I don't know what car you've got, but for 308QV's, the Mondial manual is actually more detailed than the 308/328 manual.
     
  16. Bryan

    Bryan Formula 3

    If you can track down a copy of FCA publication Prancing Horse #151, Bill Badurski (FCA Tech Chairman), has a great article on doing valve timing for a V-12. While the details will be different for your car, the PH article is a good introductory article with helpful pictures. Bill's tech articles are always good, but this one is a classic for me.
     
  17. billb

    billb Formula Junior
    Professional Ferrari Technician

    Jun 4, 2001
    407
    Shorewood, IL
    Full Name:
    Bill Badurski
    Bryan,
    Thanks for the kind words.
     
  18. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
  19. vincenzo

    vincenzo F1 Rookie

    Nov 2, 2003
    3,373
  20. p4traverler

    p4traverler Rookie

    May 24, 2004
    9
    BRADWELL ON SEA
    Full Name:
    GRAEME KERSLEY
    this has worked for a frend of mine when he did his belts ,by the road side !!.

    hope this is of sum help ,very slightly lossen the belt , get a very sharp knife and put the blade in the centure of the belt get a budy to turn the engine over by hand ,keep turning till the belt is in two half's
    remove the outer part of the belt ,
    start the new belt on the edge of the pully rotate engine pushing the new belt on all the time when it is on over half way and tuching the old belt cut of the rest of the old belt,slide the new belt all the way home and re tenshion .

    which ever way you do it before you remove any thing put the engine on t.d.c.
    paint one point on each pully that lines up with a paint mark on a fixed point,
    after fitting new belts turn engine over by hand at least twice and re-check all marks, if in any doubt NO NOT START get help,
     
  21. Peter

    Peter F1 Veteran
    Owner

    Dec 21, 2000
    6,441
    B.C., Canada
    #22 Peter, Jul 10, 2004
    Last edited by a moderator: Sep 7, 2017
  22. Gianluca

    Gianluca Formula Junior

    May 6, 2003
    349
    Centreville, Virgini
    Full Name:
    Gianluca Chegai
  23. Birdman

    Birdman F1 Veteran

    Jun 20, 2003
    6,689
    North shore, MA
    Full Name:
    THE Birdman
    Graeme,
    THAT is clever!! Thanks for sharing.

    Birdman
     
  24. christopher

    christopher Formula 3

    Nov 29, 2003
    1,136
    Ontario California
    Full Name:
    Christopher
    Hey Greme,

    Just a word of "Thanks", that was clever, I appreciate you going to the trouble of sending me a pic!

    Thank you, Chris.
     

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