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P38A Diesel Exhaust Studs

Discussion in 'Range Rover' started by Lukas018, May 13, 2020.

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  1. Lukas018

    Lukas018 Active Member

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    Hi I need to renew the exhaust manifold studs but cannot find them anywhere online I was considering using high tensile bolts instead but would like to keep it original.

    Has anyone bought new ones or have an alternative to use?

    Stud is 55mm overall length with 20mm shank. Size M8.

    Thanks.
     
  2. Mark Piercy

    Mark Piercy Well-Known Member Full Member

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  3. Lukas018

    Lukas018 Active Member

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  4. Mark Piercy

    Mark Piercy Well-Known Member Full Member

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  5. wammers

    wammers STILL BREATHING. Donater

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    STC2014 ;)
     
  6. Lukas018

    Lukas018 Active Member

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    You guys definitely know your stuff!

    Just a random question, been reading about different engines and bolts types etc. Was there a certain year when everything on engines became metric sizes for bolts, washers and O-rings etc? I read that some engines use imperial bolts for certain bits and metric for other more so American applications.
     
  7. Henry_b

    Henry_b ̿̿ ̿ ̿'̿'\̵͇̿̿\з= ( ▀ ͜͞ʖ▀) =ε/̵͇̿̿/’̿’̿ ̿ ̿̿

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    Its Full of WIN.....
    Everything on the M51 is Metric IIRC..
     
  8. Grrrrrr

    Grrrrrr Technician, Bodgit & Scarper Ltd Full Member

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    The v8 is a bit of a mish-mash. GEMS is Imperial or a lot of it is and Thor has more metric, maybe all metric.
     
  9. wammers

    wammers STILL BREATHING. Donater

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    Are head bolts not still 5/8" AF? Used to hear of people using 16mm twelve point on them and buggering them up.
     
  10. Grrrrrr

    Grrrrrr Technician, Bodgit & Scarper Ltd Full Member

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    On Thor? Don't know. The exhaust manifold bolts are metric on the Thor though but imperial on the GEMS.
     
  11. RangeRoller dt

    RangeRoller dt Well-Sprung Member

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    I think that’s what monkfish did.
    Used metric and it cooked straight away
     
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  12. Henry_b

    Henry_b ̿̿ ̿ ̿'̿'\̵͇̿̿\з= ( ▀ ͜͞ʖ▀) =ε/̵͇̿̿/’̿’̿ ̿ ̿̿

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    The Thor head bolts are 14mm head M10x1.5 thread "I believe"

    My '91 3.9 was 5/8" AF / 7/16 UNC

    They changed to Metric in 95.

    IIRC
     
  13. Grrrrrr

    Grrrrrr Technician, Bodgit & Scarper Ltd Full Member

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    Pretty sure the GEMS was imperial because I remember getting that socket set out. So that puts the change-over around 1999. My suspicion is that they had a massive spares bin and it took until 1999 before they started to run out of Imperial so the metric slipped in.
     
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  14. Henry_b

    Henry_b ̿̿ ̿ ̿'̿'\̵͇̿̿\з= ( ▀ ͜͞ʖ▀) =ε/̵͇̿̿/’̿’̿ ̿ ̿̿

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    Its Full of WIN.....
    Typical LR ;)
     
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  15. Rubberknees

    Rubberknees Well-Known Member Full Member

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    About right for LR
     
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  16. Datatek

    Datatek Well-Known Member

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    That's why LR were still using up 13.8 volt alternators years after all the other manufacturers had switched to 14.7.:rolleyes:
     
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