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CVylinder Head ID

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jdt64Spit John Tardelli
Sugar Hill, NH, USA   USA
I have a complete Spitfire cylinder head that I can not ID. I also have
the carburetor along with intake and outtake manifolds. I have
attached photos of the cylinder head and intake manifold. My
research has indicated that it may be from a USA 1970 Spitfire III.
These Spits had a single Stromberg CDSE 150 carb, this matches
with the carb and intake manifold that I have.

Does anyone have a confirmation or other ideas?

Thanks,
jdtSpit64

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spitlist Avatar
spitlist Joe Curry
Sahuarita, Sahuarita, AZ, USA   USA
The casting number 307871 verifies that it is for a small journal 1296.

clshore Carter Shore
Beverly Hills, FL, USA   USA
In reply to # 1511642 by jdt64Spit I have a complete Spitfire cylinder head that I can not ID. I also have
the carburetor along with intake and outtake manifolds. I have
attached photos of the cylinder head and intake manifold. My
research has indicated that it may be from a USA 1970 Spitfire III.
These Spits had a single Stromberg CDSE 150 carb, this matches
with the carb and intake manifold that I have.

Does anyone have a confirmation or other ideas?

Thanks,
jdtSpit64

I cannot see the numbers on the manifold.
But there are basically two variants, one with 1" diameter ports, the other with 1-1/4" ports.
The 1" version was fitted to 1500; the smaller ports yield higher gas velocity and better low end torque, at the expense of high RPM power.
The 1-1/4" version yields better high end power, is less common in the US, and more desireable.

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jdt64Spit John Tardelli
Sugar Hill, NH, USA   USA
Manifold reads -
P8M1 STANPART V3178
The main port diameter is 1.5"



Edited 1 time(s). Last edit at 2018-02-05 04:44 PM by jdt64Spit.

clshore Carter Shore
Beverly Hills, FL, USA   USA
In reply to # 1511657 by jdt64Spit Manifold reads -
P8M1 STANPART V3178
The main port diameter is 1.5"

I was referring to the 4 ports that mate to the cylinder head.

But V3178 is indeed a big port manifold.

GeorgeOhr Nonya Business
Yes, confused, USA   USA
515973?

spitfire50 Avatar
spitfire50 Paul Mugford
Rochester, N.H., USA   USA
John,
Stamped into the top surface of that head there is a number which identifies it more closely than the cast in number 307871. I seem to see something like 575935. 515748 is a late Mk3 emission control head after engine number FE 8155E perhaps that is what I'm trying to make out in the first pic.
All the best,
Paul

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grumpicus Steve Jackson
Leicester, Leicestershire, UK   GBR
The casting number 307871 indicates it's an 8 port head, fitted to 1300 (and 1500 FWD) engines produced before about 1971, such as the Spit Mk3 and the Herald 13/60. The model specific number is stamped into the head surface closest to No. 3 cylinder, and is of the form 51XXXX.
Specific numbers using the 307871 casting I'm aware of are:-

515573 for the UK Herald 13/60, with an overall head thickness of 3.005"
515973 for the UK Spit Mk3, with an overall head thickness of 2.975"
and
519275 from a UK 1500 TC FWD saloon/sedan (head thickness unknown, lots of skimming to fit it to a 1300!)

I'm sure there are lots of other numbers - the basic casting number is always the same, but head thicknesses vary and some of the 1500 FWD versions had larger inlet & exhaust valves!

TinDrum Herald Ma
cologne, NRW, Germany   DEU
In reply to # 1511680 by GeorgeOhr 515973?

+1

Herald

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jdt64Spit John Tardelli
Sugar Hill, NH, USA   USA
Yes, the number stamped on the head is 515973.
The intake ports are 1 1/4" in diameter

So the head is for a Spitfire M3. It was definitely from a
US car, not a UK one.

If anyone is interested in the head and/or manifolds, send me a message.
I am in the MA/NH area.

Thanks to all for your information.
jdt64Spit .

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