[xk] XK150 3.8 litre B type head C14958

I have just picked up a wonderful unmachined uncoroded 3.8 litre XK150 head
part number C14958 the 8 being handstamped meaning there was a different
part number under it ie C14956 the 6 being removed and the 8 hand stamped.
This had come from a low mileage XK150FHC
What I was interested to find was the part numbers on the cams and they were
not what I thought they would be.
Does anyone have any info on the part numbers on the cams in their genuine
3.8 litre XK150 with the turquoise coloured head?.
photos of the Head can be seen at https://www.facebook.com/JaguarArchives/

terry
http://www.jtpublications.com.au/book/---
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Don’t you mean the usual 3.8 B-type Metallic-Mid-Blue coloured-head, and not
‘turquoise’, albeit there may be traces (albeit unlikely) of the usual 3.4
B-type duck-egg-blue/green head colouring somewhere not evident in your
photos.

If as you suggest this head started life as a C14956 (quite feasible) then
it was originally made/intended/used on a 3.4 litre (non-S) XK150, 3.4 litre
Mark 1, or 3.4 litre Mark 2 - all the same apart from any Engine Number
stamped on.

But as per photos, the cast-in part number now shows C14958, with last digit
‘8’ stamped in, which suggests to me that this head may indeed be simply a
factory reworked/reconditioned head (pre-delivery, warranty replacement,
spare-parts replacement) originally used/intended on a 3.4, but now
reworked/renumbered/repainted Metallic-Blue to be used on a 3.8 litre
(non-S) XK150, Mark IX or 3.8 litre Mark 2.

You don’t show any HEAD NUMBER stamping, which would reveal more.

And you don’t show any CAMSHAFT Numbers, as per your inquiry, albeit CAMS
are and were regularly changed.

Roger Payne
XK140MC OTS; 4.2E OTS; DaimlerSV8
Canberra, Australia

.-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On Behalf Of
Terry McGrath
Sent: 1 September, 2016 00:00
To: xk@jag-lovers.org
Subject: [xk] XK150 3.8 litre B type head C14958

I have just picked up a wonderful unmachined uncoroded 3.8 litre XK150 head
part number C14958 the 8 being handstamped meaning there was a different
part number under it ie C14956 the 6 being removed and the 8 hand stamped.
This had come from a low mileage XK150FHC What I was interested to find was
the part numbers on the cams and they were not what I thought they would be.
Does anyone have any info on the part numbers on the cams in their genuine
3.8 litre XK150 with the turquoise coloured head?.
photos of the Head can be seen at https://www.facebook.com/JaguarArchives/

terry
http://www.jtpublications.com.au/book/


This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

good to see someone reads my post and yes I got description of colour wrong,
head is definitely metallic mid blue as roger points out
Engine number stamped on head is an original factory stamping and the number
is as listed on the ID plate so it is the head on the car as it left the
factory.
I didn’t post pics of cam part numbers so to not influence whatever answers
that came up.
This car when it left the USA was a very original low mileage car and
unlikely to have had cams changed.
I have pulled out my entire collection of spare cams including a genuine
pair of D type cams to sort out and photograph all the part numbers for
reference see pic at

terry>> Date: Thu, 1 Sep 2016 10:17:58 +1000

From: “Roger Payne” rogerpayne@bigblue.net.au
Subject: RE: [xk] XK150 3.8 litre B type head C14958

Don’t you mean the usual 3.8 B-type Metallic-Mid-Blue coloured-head, and
not
‘turquoise’, albeit there may be traces (albeit unlikely) of the usual
3.4
B-type duck-egg-blue/green head colouring somewhere not evident in your
photos.

If as you suggest this head started life as a C14956 (quite feasible)
then
it was originally made/intended/used on a 3.4 litre (non-S) XK150, 3.4
litre
Mark 1, or 3.4 litre Mark 2 - all the same apart from any Engine Number
stamped on.

But as per photos, the cast-in part number now shows C14958, with last
digit
‘8’ stamped in, which suggests to me that this head may indeed be simply
a
factory reworked/reconditioned head (pre-delivery, warranty replacement,
spare-parts replacement) originally used/intended on a 3.4, but now
reworked/renumbered/repainted Metallic-Blue to be used on a 3.8 litre
(non-S) XK150, Mark IX or 3.8 litre Mark 2.

You don’t show any HEAD NUMBER stamping, which would reveal more.

And you don’t show any CAMSHAFT Numbers, as per your inquiry, albeit CAMS
are and were regularly changed.

Roger Payne
XK140MC OTS; 4.2E OTS; DaimlerSV8
Canberra, Australia

.

I have just picked up a wonderful unmachined uncoroded 3.8 litre XK150
head
part number C14958 the 8 being handstamped meaning there was a different
part number under it ie C14956 the 6 being removed and the 8 hand
stamped.
This had come from a low mileage XK150FHC What I was interested to find
was
the part numbers on the cams and they were not what I thought they would
be.
Does anyone have any info on the part numbers on the cams in their
genuine
3.8 litre XK150 with the turquoise coloured head?.
photos of the Head can be seen at
https://www.facebook.com/JaguarArchives/

terry
http://www.jtpublications.com.au/book/


This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

So what is the HEAD stamped ENGINE NUMBER, and also the rear-of-valley
stamped HEAD-SEQUENCE-NUMBER (can’t read in fuzzy photo)

Smacks of a factory expedient of using a spare/surplus 3.4 head for a 3.8
block application.
Age for age, not much difference, so easily factory modified/reworked - as
indicative of grinding off ‘6’ digit and stamping in ‘8’.
Common practice for Jaguar where casting/forging similar, with differences
in machining.

Roger Payne
XK140MC OTS; 4.2E OTS; DaimlerSV8
Canberra, Australia

.-----Original Message-----
From: owner-xk@jag-lovers.org [mailto:owner-xk@jag-lovers.org] On Behalf Of
Terry McGrath
Sent: 2 September, 2016 10:41
To: xk@jag-lovers.org
Subject: [xk] XK150 3.8 litre B type head C14958

good to see someone reads my post and yes I got description of colour wrong,
head is definitely metallic mid blue as roger points out Engine number
stamped on head is an original factory stamping and the number is as listed
on the ID plate so it is the head on the car as it left the factory.
I didn’t post pics of cam part numbers so to not influence whatever answers
that came up.
This car when it left the USA was a very original low mileage car and
unlikely to have had cams changed.
I have pulled out my entire collection of spare cams including a genuine
pair of D type cams to sort out and photograph all the part numbers for
reference see pic at


4310&type=3&theater

terry

Date: Thu, 1 Sep 2016 10:17:58 +1000
From: “Roger Payne” <@Roger_Payne2>
Subject: RE: [xk] XK150 3.8 litre B type head C14958

Don’t you mean the usual 3.8 B-type Metallic-Mid-Blue coloured-head,
and not ‘turquoise’, albeit there may be traces (albeit unlikely) of
the usual
3.4
B-type duck-egg-blue/green head colouring somewhere not evident in
your photos.

If as you suggest this head started life as a C14956 (quite feasible)
then it was originally made/intended/used on a 3.4 litre (non-S)
XK150, 3.4 litre Mark 1, or 3.4 litre Mark 2 - all the same apart
from any Engine Number stamped on.

But as per photos, the cast-in part number now shows C14958, with
last digit ‘8’ stamped in, which suggests to me that this head may
indeed be simply a factory reworked/reconditioned head (pre-delivery,
warranty replacement, spare-parts replacement) originally
used/intended on a 3.4, but now reworked/renumbered/repainted
Metallic-Blue to be used on a 3.8 litre
(non-S) XK150, Mark IX or 3.8 litre Mark 2.

You don’t show any HEAD NUMBER stamping, which would reveal more.

And you don’t show any CAMSHAFT Numbers, as per your inquiry, albeit
CAMS are and were regularly changed.

Roger Payne
XK140MC OTS; 4.2E OTS; DaimlerSV8
Canberra, Australia

.

I have just picked up a wonderful unmachined uncoroded 3.8 litre
XK150 head part number C14958 the 8 being handstamped meaning there
was a different part number under it ie C14956 the 6 being removed
and the 8 hand stamped.
This had come from a low mileage XK150FHC What I was interested to
find was the part numbers on the cams and they were not what I
thought they would be.
Does anyone have any info on the part numbers on the cams in their
genuine
3.8 litre XK150 with the turquoise coloured head?.
photos of the Head can be seen at
https://www.facebook.com/JaguarArchives/

terry
http://www.jtpublications.com.au/book/


This email has been checked for viruses by Avast antivirus software.
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