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Thread: 1964 'S' engine rattle

  1. #31
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    Quote Originally Posted by piman View Post
    I presume your inlet side check did not show anything exceptional?
    Alec
    I've not done the inlet side yet. The cover gasket on the exhaust side split on removal (luckily at the the top, and not causing any issues), so i'm reluctant to remove the inlet side until I have new gaskets available, I need to drive the car tomorrow and over the weekend, so it may have to wait until after that.
    I plan to remove them both at that time, and see if the exhaust bucket guides have rotated, based on the marks I left.
    I have a new filter and oil here so will probably change it on Saturday, just because it's been in for a year and is quite black. I'm not expecting any change to the noise issue - it's been there for years and several oil changes !
    I have a boroscope type camera, if I get time i'll have a look inside the cylinders from the spark plug holes to see if it all looks as expected.

    On another note, the carbs could do with tuning, especially the auto-choke system, as idle is rough and smokey while it warms up. Can anyone recommend someone in the Herts / Beds / Bucks area who could do this?

  2. #32
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    Oil changed over weekend... engine noise seemed reduced... for a while.
    Talked to my father (who usually looks after this car) - he checked both cam clearances a few months ago and they were all within 1 or 2 'thou of where they should be - which is what I found on the exhaust side.
    To me, the worst of the noise appears to be around cylinder 5 - which has slightly worse clearance than the rest, but it's minimal.
    We're now wondering if the issue is 'further down' - eg the valve stem is misshapen etc.
    He has a complete spare head, which could be refurbished and fitted, so we'll probably go with that approach when time allows.

  3. #33
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    Hello alan,

    I don't expect that you will find any valve stem problems that would cause such a noise, at least not without a very smoky exhaust. A simple trick is to run the engine with the cam covers off and put a feeler gauge between the cam and the bucket to see if that removes any noise. this can help pinpoint the troublesome ones. Have or can you do a compression test to get a better indication of general condition?

    Alec
    2004 2.5 X Type Estate, MK 2 3.8 (Long term restoration), 2.5 P.I. Triumph saloon, 564 Hymer motorhome.

  4. #34
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    Sorted is it?
    Jaguar Keys & Remotes
    Castle Locks
    196 London Rd
    Hadleigh
    Essex
    SS7 2PD

    07792 552423
    01702 555557
    castle.locks@btinternet.com

  5. #35
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    I had a noise like this recently on a 3.8 and it was a bent valve, in that case the clearance had increased to 20 thou but it might be that you have one slightly bent.

    Have you done a compression test?

  6. #36
    Senior Member cass3958's Avatar
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    Alan have you registered your S Type with us at the International S type register? http://www.jagstyperegister.com
    We have a very good forum attached to the register which covers everything 1963 to 1968 S Type Jaguar related.
    Rob.C.
    1968 Jaguar S Type 3.4 Auto Old English white
    2006 X type SE 2.0d Estate
    1966 Ford Anglia 1760 X flow
    1993 Yamaha FJ1200
    2012 Old English Sheep Dog White and Grey

  7. #37
    Senior Member cass3958's Avatar
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    Originally Posted by ponsaloti
    Got it.
    When was the last oil change Alan?



    Last summer, and about 2000 miles ago IIRC. It's due another now.

    Quote Originally Posted by ponsaloti View Post
    Personally I wouldn't bother with only 2k.
    I was just reading through this topic again and thought I would comment on the above. Oil loves to attract water and in an engine that is sitting around for a length of time not running which this one is if it has only done 2000 mile in the last year. Changing the oil is not just to get rid of the dirt the engine accumulates over the miles but to change out the water content that will stop the oil doing its job correctly. This is also the reason you should change your brake fluid on a regular basis. I change the oil and filter in my 1968 S Type once a year and only cover 3000 miles a year if I am lucky.
    Last edited by cass3958; 24-12-19 at 14:26.
    Rob.C.
    1968 Jaguar S Type 3.4 Auto Old English white
    2006 X type SE 2.0d Estate
    1966 Ford Anglia 1760 X flow
    1993 Yamaha FJ1200
    2012 Old English Sheep Dog White and Grey

  8. #38
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    Apologies for not responding to the outstanding questions on this thread!
    I changed the oil in the summer, but it didn't help with this issue. The S-Type has returned to it's usual home in my Dad's garage, so nothing has moved forwards.
    I was talking to Tom Lenthall (jaguar specialist) over the weekend about this, and he's certain it will be worn buckets and guides, and recommended a complete head overhaul with new everything, costing a cool £2000+
    I'd rather a DIY approach costing far less if possible!
    @homersimpson - it's had a compression test in the past (which was normal), probably worth doing again to check it's still the same.
    @cass3958 - I've not added it to the register, i'll check if my Dad has, and if not will do so.

  9. #39
    Senior Member cass3958's Avatar
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    Alan if you PM me with the chassis number I can check if your car is on the register and if not we can exchange details so it can be registered correctly.
    I certainly had a ticking at the top end rather than a rattle. Had since I had the engine rebuild completed back in 2014 and thought it was the buckets. Fitted a stake down kit which quietened the engine slightly I thought but still had a ticking. I checked the valve clearances and found they had been set at 10 on the inlet and 12 on the exhaust. Whether this was due to run in I was not sure. I looked in to doing the shims myself but the cost of buying a shim set was as expensive as getting my local classic Jaguar specialist to do it for me. They dropped the clearances down to 4 on the inlet and 6 on the exhaust and the engine is now so quiet I found a couple of joints on the exhaust were blowing slightly. lol.
    PM me the chassis number with your E Mail address and I will check for you.
    Rob.C.
    1968 Jaguar S Type 3.4 Auto Old English white
    2006 X type SE 2.0d Estate
    1966 Ford Anglia 1760 X flow
    1993 Yamaha FJ1200
    2012 Old English Sheep Dog White and Grey

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