[Healeys] manifold nuts

[Oudesluys]

In general you do not need lock washers when using high grade nuts, 
studs and bolts. However as I always use anti seize compound (thus only 
torqued up to about 50% of the nominal value to get the correct stretch 
in the studs) on exhaust studs/nuts I prefer to use cupped spring 
washers, not the split washers, especially when using softer materials 
like brass. If it does not help it does not harm either.
Kees Oudesluijs
NL

Op 22-12-2012 1:03, Alan Seigrist schreef:
> John -
>
> The manifold and head are both surfaced.  Simply torque to spec - I've
> never had a manifold nut com off due to vibration.  I have over 100K miles
> in my BJ8 if that matters.  I have lots of old british cars, never a
> problem.
>
> Best,
>
> Alan
>
> On Sat, Dec 22, 2012 at 1:56 AM, john spaur <jmsdarch at sbcglobal.net> wrote:
>
>> The parts book shows only plain steel washers and tall brass nuts to
>> attach the manifolds to the head.
>>
>> Is a lock washer recommended?
>>
>> I have always used them but would like to know what the best practice is.
>>
>> John Spaur
>> '62 BT7
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-- 
Kees Oudesluijs
Dorpsstraat 183
2995XG Heerjansdam
T: 078-677 1233
E: coudesluijs at chello.nl

Technische commissie Jensen Healey en GT
Het Jensen Genootschap Holland
www.jensenholland.nl