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Thread: What to do after V8 head removal

  1. #1
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    What to do after V8 head removal

    Having decided to replace the head gaskets on my V8, I've stripped the top end down and am just about to pull the two heads off.

    Being a bit of a novice, I know I am going to have a few questions to ask before I get this thing back together again.

    The reason for this work is that I got sick of the persistent coolant leak, so here we are. There seems to be quite a build-up of crud around the rockers, so I'm thinking perhaps there has been a bit of contamination of coolant inside the engine as well.

    For now though I need some advice on what to do with the heads when I get them off. I intend to drop them off at a local engine builder, but what should I ask them to do? Do I have to clean them first? I’m thinking the engine bloke will be able to do a much better job of that than I could.

    Also, to change the subject a little, I have removed the fuel rail complete with injectors and was wondering how to remove the injectors from the rail. I think they are just sitting in there with an o-ring seal, but I pulled as hard as I was game and they don’t want to come out.

    Anyway, that’s all for now.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  2. #2
    Roverlord off road spares is offline AT REST
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    Biggin it depends on your budget, some take the short cut cheap way and just get the heads skimmed.
    The proper way would be to have the engine shop pressure test for cracks, hardness test to see if heads have gone soft. If all is ok, they put it in a cleaning bath, strip all the valves and stuff reseat the valves , skim it to make sure its flat, re-asssemble, the last time I had a pair done with new valve stem guides it was about $760. That was Orger Engines, they are expensive but do a thorough job.
    Cheers, Mario


  3. #3
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    Mate read this thread. Cheers

    New Head Gaskets

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    Thanks for the advice Mario.
    This isn't the sort of job I want to do again in the near future, so definitely worth doing it properly considering I plan to keep this vehicle for a long time yet.
    I take it that Orger is near you. I'm considering a guy in Moe that has a good reputation.
    Cheers, Alan.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  5. #5
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    Biggin with attention to detail, cleanliness and RAVE you can't go to far wrong. Any questions I will do my best to assist. Cheers

  6. #6
    Roverlord off road spares is offline AT REST
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    Quote Originally Posted by biggin View Post
    Thanks for the advice Mario.
    This isn't the sort of job I want to do again in the near future, so definitely worth doing it properly considering I plan to keep this vehicle for a long time yet.
    I take it that Orger is near you. I'm considering a guy in Moe that has a good reputation.
    Cheers, Alan.
    Hi Alan, Orger is in
    Scoresby road Bayswater, they usually ask for the customer to provide the valve stem seals which would be in a VRS kit.


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    Thanks Ozscott and Mario.
    I'll just keep the questions coming then:

    Do these injectors just pull out of the fuel rail or do you need a special tool for that? I pulled pretty hard and was worried about breaking them. Perhaps a bit of lubricant will help.
    I suppose the new injectors' o-rings come in the head gasket kit.

    Cheers,
    Alan
    Attached Images Attached Images
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  8. #8
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    on mine, there was a clip holding the injector in place.

    the clip isnt obvious but comes out easily so just pull round.
    Current Cars:
    2013 E3 Maloo, 350kw
    2008 RRS, TDV8
    1995 VS Clubsport

    Previous Cars:
    2008 ML63, V8
    2002 VY SS Ute, 300kw
    2002 Disco 2, LS1 conversion

  9. #9
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    Hi mate. I didn't remove mine from the rail. Have you got RAVE? Cheers

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    Eevo, I've already removed the clip and they turn easily but won't pull out.

    Ozscott, I have RAVE. Must say I haven't checked to see what it says about taking the injectors out though. Will probably say something like "remove".

    I've just read your link below. It is amazing how identical your original issues where, to mine. Leaks in the exact same spots. How did you manage to get your block looking so clean, especially under the valley cover. What did you use to do that?

    I really appreciate all of your input. No mechanics or mechanical engineers in my family, but I am used to this sort of work being an old school instro, of whom there are few left.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

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