Discovery 2: Build and assembly of 4.6L V8 - Page 4





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  1. #61
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    Default Re: Build and assembly of 4.6L V8

    Most probably a little burr on one of the rings.

    If you dismantle you will probably not find anything.

    If you remove that piston keep the bolts in mind, how many times they can be used.

    Your choice, you have to sleep at night.
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  2. #62
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    Default Re: Build and assembly of 4.6L V8

    Jay B, I love your work. Glad to see I am not the only one that is fanatic about clean a surrounding and a clean work place when assembling an engine.

    One thing I always do is to check true TDC with a dial gauge and see if the timing marks on the crank is true. Have find many of the manufactures markings to be out.

    Keep up the good work. I really enjoy this thread.
    Last edited by grips; 2019/12/20 at 06:50 AM.
    It is not what you buy its what you build.

  3. #63
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by grips View Post
    Jay B, I love your work. Glad to see I am not the only one that is fanatic about clean a surrounding and a clean work place when assembling an engine.

    One thing I always do is to check true TDC with a dial gauge and see if the timing marks on the crank is true. Have find many of the manufactures markings to be out.

    Keep up the good work. I really enjoy this thread.
    Thanks appreciate it, can never be too clean.
    Im still anxious and wondering what I am doing with all the "what if" questions as to whether im going to get this right.

    Thanks for advice on checking timing, hopefully get camshaft and chain fitted on monday so will keep that in the bank for then

  4. #64
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    Default Re: Build and assembly of 4.6L V8

    Finally finished up getting all 8 piston assemblies in.
    Bearing caps all torqued with no issues and clearance between rods all within spec

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  5. #65
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    Default Re: Build and assembly of 4.6L V8

    Also fitting the camshaft, amazing how a single piece of billet turns into something like this.
    used Comp CAMS camshaft and lifter lube on the camshaft journals and lobes.

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    Looks like i went from building an engine to slaughtering a lamb for tomorrows lunch
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    Long bolt screwed into the front of the Cam makes it pretty easy to slide it in without damaging the bearings or lobe surfaces.
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  6. #66
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    Default Re: Build and assembly of 4.6L V8

    Loving your work. What is that floor you are doing the engine on? Looks like you are in the kitchen on a laminated floor!

  7. #67
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    Default Re: Build and assembly of 4.6L V8

    Jay you sure that was from a billet? It looks like its cast and then machined.

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  8. #68
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    Default Re: Build and assembly of 4.6L V8

    Technically a billet can be a casting.
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  9. #69
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    Default Re: Build and assembly of 4.6L V8

    Just love this thread. I am a Comp cam fan. All three of my latest v8 builds run Comp cams.
    Another tip get yourself a degree wheel to set your cam timing accurately.
    It is not what you buy its what you build.

  10. #70
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by stephenplumb View Post
    Loving your work. What is that floor you are doing the engine on? Looks like you are in the kitchen on a laminated floor!
    If i was allowed i would be doing it in the kitchen
    It is just some extra cupboard panels we had that i put down to reinforce the floor in my shed.

  11. #71
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by grips View Post
    Just love this thread. I am a Comp cam fan. All three of my latest v8 builds run Comp cams.
    Another tip get yourself a degree wheel to set your cam timing accurately.
    Thanks, yes someone else suggested the degree wheel as well.
    Going to see if i can find one somewhere today, otherwise will just look at printing one out.

  12. #72
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    Default Re: Build and assembly of 4.6L V8

    While I wait for my head studs to be delivered I have started removing the existing engine so I can get the rocker shafts and other bits and pieces i need to use on the new motor.

    And the crap I am finding just irritates me to no end...

    This is the connection on the heater return pipe to the lower inlet manifold
    The amount of silicone being used in place of gaskets has been beyond me.
    Bolts missing from hard to reach places and i can keep going
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    But all we need to do is release the gearbox bolts and lift her out.
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  13. #73
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    Default Re: Build and assembly of 4.6L V8

    I do have a question for those who maybe know better, when I took the rocker shafts off I compared with the manual and found that they are assembled the wrong way round.

    Manual below says marking at 1 O'clock and push rod to the right.
    Mine are assembled with marking at 7 O'clock and push rod to the left, the part in blue is what of great interest to me.

    If our vehicle stands for more than a day there is significant ticking and delayed time to build oil pressure before the ticking dissipates and I am of opinion this is the reason why.

    So I will pull apart and reassemble according to the manual before installing on the new heads.
    Valve contact pads still look usable to my eye, will post some detailed photos once i have cleaned them nice and proper.

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  14. #74
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    Default Re: Build and assembly of 4.6L V8

    Did you come right with an engine hoist?
    Alan


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  15. #75
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by Jay_B View Post
    I do have a question for those who maybe know better, when I took the rocker shafts off I compared with the manual and found that they are assembled the wrong way round.

    Manual below says marking at 1 O'clock and push rod to the right.
    Mine are assembled with marking at 7 O'clock and push rod to the left, the part in blue is what of great interest to me.

    If our vehicle stands for more than a day there is significant ticking and delayed time to build oil pressure before the ticking dissipates and I am of opinion this is the reason why.

    So I will pull apart and reassemble according to the manual before installing on the new heads.
    Valve contact pads still look usable to my eye, will post some detailed photos once i have cleaned them nice and proper.

    Click image for larger version. 

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    My money would be on your lifters before that as the root cause for the ticking. As they age, they bleed down easier and this takes time to allow them to pump up again on startup, and with an older oil pump it all runs less efficiently and adds up.
    Valve train ticking will be an almost constant ticking from a worn shaft on tired rockers, I'd brace myself to maybe replace at least the shaft before you reassemble.
    Cheers,
    John

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  16. #76
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    Default Re: Build and assembly of 4.6L V8

    Ja, thats probably leak by on a hydraulic lifter.
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  17. #77
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by jfh View Post
    Ja, thats probably leak by on a hydraulic lifter.
    And how do you measure this?

    Not intended to be a smart arse question
    Alan


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  18. #78
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    Default Re: Build and assembly of 4.6L V8

    No, don't think that's possible.

    It's just wear. On my 3.5 V8 I had one that ticked until the engine got to operating temperature.
    Drove it like that for years.

    Don't ask. Long story.

    Just as a side note, if you are going to replace them, please replace the cam as well.
    If you don't the old cam will just eat into the new lifters at a higher rate.
    '07 Land Rover Defender 110 TDI 300 Kalahari (Meisiekind˛)

    84' Land Rover Defender 110 V8 4-speed Hardtop (Meisiekind) Sold after 12 years of fun and hard work




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  19. #79
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by jfh View Post
    No, don't think that's possible.

    It's just wear. On my 3.5 V8 I had one that ticked until the engine got to operating temperature.
    Drove it like that for years.

    Don't ask. Long story.

    Just as a side note, if you are going to replace them, please replace the cam as well.
    If you don't the old cam will just eat into the new lifters at a higher rate.
    How much quicker will the lifters wear with old cam?
    Alan


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  20. #80
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    Default Re: Build and assembly of 4.6L V8

    Quote Originally Posted by All -in -one View Post
    How much quicker will the lifters wear with old cam?
    The lifters will probably outlast the cam, but both WILL wear at an accelerated rate if you don't replace them as a set.
    The lifters rotate in their bores as the engine runs and this rotation on the cam lobe beds in to a matched set for the life of the cam, which on the Rover engines is a finite thing.
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    Cheers,
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