That's interesting and may well be the reason.
The passages (the one in my cylinderhead and the 6 holes in the other head)
have a diameter of about 12mm). So these passages are facing the block and are
located precisely beneath the exhaust ports. My cylinderhead has all the work
done, so I'd rather add these passages than searching for another cylinderhead.
Marcel
----- Oorspronkelijk bericht -----
Van: "fot" <fot@autox.team.net>
Aan: "fot" <fot@autox.team.net>
Verzonden: Zaterdag 30 november 2019 16:50:06
Onderwerp: Re: [Fot] TR6 cylinderheads
Comparing the cylinderhead of this engine with another 6 cylinder head
(probably also from a TR6 , but from a Triumph saloon is also possible)
: it turns out that my cylinderhead is lacking 5 coolant passages. My
cylinderhead has only a passage just beneath outlet port no 6. The other
cylinderhead has passages beneath every outlet port. I didn't know of
this difference between 6 cylinder heads.
Just a WAG. In the late 1960s and 1970s SMOG regulations were kicking
in. One of the first things that manufacturers did was have their
engines run hotter. Some manufacturers accomplished that by reducing
coolant flow through cylinder heads, reducing passage size and/ or
eliminating cooling passages. My WAG is that you have a late TR6 head
intended for the US or just California market. I suggest going shopping
for an earlier head that still has all the passages.
TeriAnn
Who knows nothing about TR6 heads
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