Sierra Front Propshaft

The 4×4 Ford Sierra Cosworth Front propshaft needs to be extended. Because of the 19” front wheels the front diff is mounted higher in the chassis. This means the propshaft now travels upwards towards the front of the car. If I angled the front diff down 1.5 degrees then I could gain a couple millimetres where I have clearance problems, but not quite enough. I could angle it more and this would cure the problem but the UJ’s would be working much harder.

Cosworth Sierra Front Propshaft problems

The front propshaft is now over 3 time it’s original length. Unfortunately it now wants to occupy the same space as the bottom bellhousing bolt.

Cosworth 4x4 Propshaft

The intention for this Haynes Roadster is to mount the Ford MT75 4×4 gearbox to the Jaguar Duratec 3.0 AJ-30 V6. I have hopefully sorted how to mount these two together without the need for an adaptor plate.

The rear half of the gearbox is Sierra and the front half is from a van. The gearbox casing halves fit, but until I get a manual flywheel / clutch and solve problems with the sump, I’m a little reluctant to publish what I’ve found. Just because 6 bolts line up, doesn’t mean it fits.

Besides, I have my eye on a supercharged Jaguar XJR V8!

A 400BHP 4.2litre 4×4 Haynes roadster!

Watch this space for the solution….

If a V8 is fitted, then the lack of triangulation in the standard Haynes Roadster / McSorley 442 chassis will become a real issue. Once I have worked out how all the parts fit together, I will design a new much stronger chassis using FEA.

The part number of propshaft is:

V89BB AA B027A
807031 BT92 B.

This is another lucky ebay find. New Old Stock.

Ford Sierra Cosworth Front Propshaft

Sure, it’s a bit scratched but it came in its original Ford bag and it was very cheap. In reality I could have used a second hand item as when it goes off to be extended, it will be re-manufactured and balanced to better than original standards.

Cosworth Sierra Front propshaft CAD

Update: The Duratec V6 will be replace with a Rover V8. The intention for the front proshaft is to find an old Volvo 2 piece propshaft (as I’ve been told that the parts are interchangeable)

Kit Car Tube Chassis

This Haynes Roadster Kit Car Tube Chassis is a 44-0.2 4 inches wider 4 inches longer -0.2 inches less tall The gearbox tunnel hasn't quite ended up as I would have hoped. No doubt it will look better once the front section has been re-added.

Rover V8 Timing Chain Cover Part 3

What is a Serpentine Front Cover? Will it save me the room I need? The Rover V8 serpentine timing chain cover was fitted to 'interim' Land Rovers, long after the demise of the SD1 Rover. The engine I have, is from an SD1 Vitesse and unfortunately I am having problems

Rover V8 Inlet Trumpets

Many people modify the length of the Rover V8 Inlet Trumpets within the plenum. However, until I get my Rover V8 up and running I keep mine as Land Rover intended. The first job for me was to get it drawn up into CAD. - Basically an excuse not to be

Rover V8 Timing Chain Cover - Part2

Rover V8 Plenum Chamber

Rover V8 PlenumThis might just look like a Rover V8 Plenum Chamber, but in fact it will enable me to judge bonnet height. The Rover V8 engine is quite tall compared to others I've looked at and I am determined not to have a huge bonnet bulge that looks like a

Rover V8 Timing Chain Cover

Rover V8 Timing Chain Cover for short water pump. What's the shortest water pump assembly that can be fitted to the Rover V8? The Rover 3500 SD1 had a very similar front timing cover to that of it's predecessor, the P6. The P6 timing chain cover always suffered

Rover V8 CAD

The BW35 bellhousing for the Rover V8 hasn't arrived, so I've started drawing up other parts of the engine. This may look like just another rocker box, but in fact it is actually a sign that I've decided to draw the Rover V8 engine. I reckon, long

Plan of Attack

Having built and modified several cars in the past, with this build I knew it was vital that I laid out exactly what I wanted to do before I even picked up a saw or file. I’d had projects that started with live axles, swapped for IRS then

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