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While I'm in there.

Discussion in '308/328' started by Tonksy1, Sep 28, 2020.

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  1. Tonksy1

    Tonksy1 Karting

    Jun 21, 2016
    91
    New Zealand
    #1 Tonksy1, Sep 28, 2020
    Hello Ferrari chatters. I currently have the plenum off my engine doing a job on re painting it, I'm now looking at that normally impossible place to get access to on top of the engine,and wanted some advice on what I should service/replace while I'm in there...
    Also I'm thinking of removing the intake manifold to give them a really good clean, maybe vapour blast. Could I come across any problems removing them? I do have new gaskets if needed.
    Thanks in advance.

    Dean (NZ)
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  2. conan

    conan Formula Junior

    Nov 13, 2011
    389
    #2 conan, Sep 28, 2020
    The intake gasket is a pain to remove ... but I guess it might be different on different cars. It will look amazing when the cleaning job is done ...

    Thermo time switch could be easier to access and test.

    The coolant return line looks pretty good, but if old, it is worth replacing.
     
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  3. derekw

    derekw Formula 3

    Sep 7, 2010
    1,521
    London, UK
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    Derek W
    #3 derekw, Sep 28, 2020
    I wouldn't remove the manifolds, they can be really stuck. Upside you have cleaner parts that you can hardly see, downside is a whole lot of work and trouble. Get some foaming or gel alkaline cleaner, put it on, wait a few minutes for it to bubble a little, wipe it all off. Cover everything else while you do it so none goes astray.
     
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  4. spicedriver

    spicedriver F1 Rookie

    Feb 1, 2011
    3,859
    #4 spicedriver, Sep 28, 2020
    The coolant "T" has a hose fitting that corrodes. The small rubber hose attached. It looks like yours is corroding (green color). The original part is some sort of alloy, so I don't know why it disintegrates, but it does. Fairly common problem. Ricambi sells a stainless steel replacement. I would replace the big end hose as well.

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  5. Ricambi America

    Ricambi America F1 World Champ
    Sponsor Owner

    Dec 7, 2003
    16,459
    Winston Salem, NC
    #5 Ricambi America, Sep 28, 2020

    Attached Files:

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  6. johnk...

    johnk... F1 World Champ
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    Jun 11, 2004
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    John Kreskovsky
    #6 johnk..., Sep 28, 2020
    Is the stainless steal nipple coated? I would put a bare SS nipple in an aluminum manifold.

     
  7. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
    13,621
    San Carlos, CA
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    Mitchell Le
    #7 yelcab, Sep 28, 2020
    Whenever I have access to that area, I change the two large coolant hoses, the small coolant bleed hose, the fitting (above) if it is corroded, and clean up the top of the engine. I rarely remove the intake runners just to clean them.
     
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  8. Nuvolari

    Nuvolari F1 Veteran
    Owner Silver Subscribed

    Sep 3, 2002
    6,644
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    Rob C.
    #8 Nuvolari, Sep 28, 2020
    Depending on your what your service records say, I would replace any hose that is more than 10 years old. If you are not sure then replace them all. Cheap insurance.

    Beyond that I would not remove or replace anything. It is a very slippery slope because everything you clean or restore will make the unrestored part next to it look much worse.

    Just do general cleaning with the minimum amount of disassembly.
     
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  9. johnk...

    johnk... F1 World Champ
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    Jun 11, 2004
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    John Kreskovsky
    #9 johnk..., Sep 28, 2020
    Let me correct that. /\
     
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  10. Brian Harper

    Brian Harper F1 Rookie
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    Feb 17, 2006
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    Brian Harper
    #10 Brian Harper, Sep 28, 2020
    From memory those threads on the nipple and head are straight, not pipe threads. This means they need a sealant on them. So they wind up being coated. Sort of.
     
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  11. Tonksy1

    Tonksy1 Karting

    Jun 21, 2016
    91
    New Zealand
    #11 Tonksy1, Sep 29, 2020
    Thanks for all the feed back guys.
    I've decided to leave the manifolds and clean in place. I'll just remove the T section. This will allow me to replace the upper and lower large coolant hoses, and get amongst the many years of grime.
    The threaded coolant hose fitting(as above) looks to be solid so will keep as is.
    Any tips on lifting the t section off its gaskets? Looks to have some sealant out the sides of the gasket and seems really bonded on.
    Thanks again for the help.


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  12. yelcab

    yelcab F1 World Champ
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    Nov 29, 2001
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    Mitchell Le
    #12 yelcab, Sep 29, 2020
    Give it a good whack and shake it loose. Replace the gaskets and orings on the studs, as well as smear it with a layer of silicone since it is often a place for leaks. You don't want to have a leak there after the whole thing is back together.
     
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  13. derekw

    derekw Formula 3

    Sep 7, 2010
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    Derek W
    #13 derekw, Sep 29, 2020
    hot air gun on the flanges and then PB blaster down the threads and leave it a day or two.
     
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