Valve thrown advice please

Discussion in 'Engine & Transmission' started by Winged, Sep 13, 2017.

  1. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
    In addition one of my cylinder/head studs is kaput. Should I be replacing them all (either studs themselves &/or threads ) or just leaving well enough alone?
    Thanks
     
  2. andrew

    andrew Active Member

    Messages:
    369
    Location:
    Richmond
    Sorry for the slow response - definitely replace the stud. I am away and will get you the detail on the valves when I get back to Melbourne.
     
  3. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
    All the studs or just the bum one?
     
  4. andrew

    andrew Active Member

    Messages:
    369
    Location:
    Richmond
    I would get the others assessed and replace s necessary - in the past on other engines I have replaced them all if there are issues.
     
  5. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
    Thanks Andrew I will talk to the machinists about it. Are they case savers that i need?

    Are these the spacers i need? Doesnt specify hydrolic though

    https://type4store.com/rocker-spacer-kit.html

    Are they used for racing or something as well as hydro?
     
  6. andrew

    andrew Active Member

    Messages:
    369
    Location:
    Richmond
    Winged,

    As I bought normal lifters I reused the rockers from the heads and did not need spacers so I'm not familiar with the change in lengths or the need for spacers.

    The case bolts etc will all be fine to reuse - I will be interested when I go to recheck the head torsion etc - the engine is running beautifully so I'm carefully following the oil changes and maintenance process
     
    oldman and Winged like this.
  7. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
  8. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
  9. andrew

    andrew Active Member

    Messages:
    369
    Location:
    Richmond
    Winged - list looks fine - bearings may not be correct size depending on crankshaft and any machining or line bore - hopefully all standard - mine ended up with 10thou oversize.
    With the oil pump - I bought a new one - it was deeper and tighter onto the new cam bolts so back in with an old one - oil preasure is great so no need for the one I bought. Have you tested the old one?
     
  10. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
    No i haven't tested it. Not sure how?
    Is it a case of matching pump to cam? How will i know if the bearings are right?
    Do bearings need to be sourced once the condition of the crank is know?
     
  11. andrew

    andrew Active Member

    Messages:
    369
    Location:
    Richmond
    I bought a pump with extra capacity which was deeper and with the new cam having bolts rather than rivets there was no clearance for the additional depth.
    If the crankshaft is ground or the align bore requires machining the bearings will need to be the right size for the machined reductions.
     
  12. Winged

    Winged Member

    Messages:
    173
    Location:
    Huon Valley
    Hi again, quick question. The new cam thats going in recommends HD springs on the heads. Do i need different ( eg steel) push rods when running HD springs?
    Cheers W
     
  13. Barry

    Barry Well-Known Member

    Messages:
    2,342
    Location:
    Abbotsford NSW
    No. Stock is fine
     
    David H likes this.

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