Bob the Aussie

[Dirty Harry]

The old Jag XK is a six cylinder right? Like a TR6? What kind of single carb manifold will fit the nice TR4A head? Old Vanguard I car? I need to put a single updraft carb on my Fergy, but want to build a big TR4A in it for tractor pulls. Ports are all in-line on the Fergy head, but the TR4A head is different. Trying to get a manifold set up to work without being all modified and chopped up.

 

[John (UK)]

If you are interested in using your tractor for pulling, make sure that you have the later type axle where everything is much heavier. You will pop the axle-shafts on the old one, you need 325001 and onwards. The Vanguard does have a Head like you describe and it would fit the Block...John

 

[Bob (Aust)]

For some reason I'm having problems posting in this thread??? :shock:

"We are sorry, your post contained one or more characters outside of the allowed character set. Only A-Z, a-z, 0-9 and all the special characters are supported. Please press back arrow and remove any accents, math symbols or unusual character sequences that would not normally occur in a simple text message post."

I'm totally mystified............

 

[Bob (Aust)]

Sorry ....... my response will need to be in parts until I can find the characters - or what ever - that are causing the problems.

I don't think the TR4 or Vanguard head will help you much as the Fergy Standard engine is governed to 28 HP at approx 2,400 RPM. The TR4 specifications are:

Bore x stroke 86.00 mm x 92.00 mm 3.39 in x 3.62 in
Displacement 2.1 litre, 2138 cc, (130.469 cu in)
Compression ratio 9.00:1
Fuel system 2 SU carbs
Maximum power (Net) 101.4 PS (100 bhp) (74.6 kW) @ 4600 rpm
Maximum torque (Net) 172.0 Nm (127 ft/lb) (17.5 kgm) @ 3350 rpm

If the Fergy engine retains the original governor I suspect you will only get 30-something HP at approx 2,400 RPM with the TR4 head?

And if you remove/disconnect the governor the gear ratio may be too low to get the benefit of any greater torque? I assume for pulling you need torque low down plus a high gear ratio as speed is probably not a requirement? Would you not be better using a tractor with gear reduction?

John (UK) is the governor expert - he may comment.

If you use the TR4 head, why not retain the twin (1 3/4"??) SU carbies on the TR4 intake manifold? As side draft carbies, they should clear the fuel tank and bonnet/hood? And if you use the TR4 intake manifold (thus eliminating the original Standard/Ferguson intake/exhaust combined manifold), fit a TR4 after market extractor exhaust manifold - make sure it is chromed or stainless, they go faster? :lol:

If you install the original twin SUs, you will also need to install an SU electric fuel pump. SU carbies will not work with gravity fuel feed.

Weber carbies are also side draft and I know you can get an after market twin Weber manifold for a TR4 - but now you are talking BIG dollars!

You could also consider making a 90° elbow adaptor to mount a side draft carby to the existing Fergy/Standard intake manifold.

You could try a carby expert to see if the original Zenith up draft carby can be modified and re-jetted for greater performance?

(Found the problem - it was an "x" like character in the TR4 specs due to the cut and paste......... :lol: )

 

[Bob (Aust)]

The Jaguar XK engine "grew out of" pre War Standard engines when Jaguar was known as SS Cars (Swallow Side Cars). The name was changed to Jaguar after WWII in part due to the connotations around the "SS". Prewar, SS or Jaguar used Standard engines. In fact, many vehicle manufacturers around the world used Standard engines.

I like British machinery from the era when Great Britain was still great in innovative engineering. My Jaguars are not for performance or speed - although they have that - but for the sheer pleasure of driving wonderful cars with impeccable handling and discrete comfort.

My 1966 XKE/E Type comes from the era when Jaguar was owned by Sir William Lyon’s Jaguar Cars Ltd - a few years later Jaguar was sold to British Leyland:

80% of all Jaguar sports cars were exported, mostly to the USA - Britain needed the export dollars to pay it's War debt. Had it not been for the impact of Jaguar sports cars (XK120, XK140, and XKE) on the US car market, Americans may not have had the Mustang or Covette to fall in love with.

The story of my E Type "rolling restoration" is [b:da81f13b99]HERE[/b:da81f13b99].

My 1993 XJ6 XJ40 3.2 liter sedan bas built during the period Ford owned Jaguar and with German ZF transmission, ZF steering and a metric engine, it is hardly 100% British!

Sadly, Jaguar is now owned by TATA of India, cars still built in the UK and the quality seems quite good, but for how long I wonder?

So much fine British innovative engineering is now non existant, sold off shore, or moved off shore. Aston Martin (when owned by David Brown), MG and Mini (now Chinese owned), Morris, Austin, Wolsley, Standard, Riley now gone, Rolls Royce (owned by Volkswagen?), Bentley (owned by BMW?) etc.

 

[John (UK)]

Bob Mini is BMW. still made here tho in a new factory.

 

[Jeff-oh]

That's good to know the thought of Mini TATAs is too much to contemplate.