[Healeys] 1275 Engine timing and carbs

Oudesluys coudesluijs at chello.nl
Tue Dec 29 15:19:03 MST 2009


As it is not the original engine (later Healey/Sprite, Mini, Metro, 
Cooper?), the timing mark may be on the flywheel. Or perhaps the 
original pulley was replaced due to damage or not of the proper type for 
this application. Was the waterpump and/or dynamo-alternator changed?
If you cannot find any mark, just measure nr. 1 piston TDC accurately 
and make the mark yourself .
One way of doing that is to make an adaptor from a sparkplug to blow 
bubbles from soapy water. Inserta few drops of heavy oil on the piston 
to create a really good seal. Put the piston in TDC as well as you can, 
fit the adaptor, stretch a film of soapy water accross the opening and 
find the position the bubble is at its biggest.
That is TDC.
It does not sound like very sophisticated technology but it works, you 
do not need special tools apart from making up an adaptor from an old 
sparkplug and it is extremely accurate.
Kees Oudesluijs
NL


Ron Ray schreef:
> While trying to help a friend time the 1275 engine in his recently acquired
> Bugeye, we could not see or feel any indication on the pulley indicating the
> TDC notch.  We looked and felt around the entire circumference of the
> pulley.
>  
> Does anyone have any suggestions what may have happened and how to correct
> this?
>  
> Also, one of the HS2 carbs' piston needle binds up after centering the jet
> and tightening the nut.  Loosening the nut allows the piston to fall with
> the "clunk" sound.  However,  even with the nut lose the needle seems to be
> sticking as upon acceleration of the engine, this piston does not raise
> nearly as quickly as the other carb piston.  I assume that the needle is
> bent and we should replace both the needles and jets in each carb.
>  
> Thanks.
>   Ron
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