After the successful introduction of our Austin DS5 cylinder heads we have recently added new products to our DS5 inventory. These new parts are the perfect complement to the cylinder heads and provide a perfect opportunity to upgrade your engine if you're undertaking a rebuild. These parts are all exclusive to us and are not available anywhere else.

The Austin DS5 6 cylinder 4.0 Ltr engine, is very similar in design, to the 2.66 Ltr 4 cylinder Austin engine used in the Healey 100 and A90 Atlantic. The DS5 was used in the Jensen 541, 541R and 541S as well as in the early Jensen Interceptor.

JENSEN

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AUSTIN DS5 ALUMINIUM CYLINDER HEAD

Our Austin DS5 Aluminium Cylinder Heads are the best and only ones on the market!
After 18 years of successfully producing Austin-Healey aluminium cylinder heads, we are pleased to launch the Austin DS5 version. We went back to the drawing board and started with completely new CAD drawings to ensure perfect accuracy, matched profiling and perfect detailing. From these drawings we fully CNC machine each head in our own factory - start to finish.

The Austin DS5 6 cylinder 4.0 Ltr engine, is very similar in design, to the 2.66 Ltr 4 cylinder Austin engine used in the Healey 100 and A90 Atlantic. The DS5 was used in the Jensen 541, 541R and 541S as well as in the early Jensen Interceptor.

Available in 3 versions, so whether you require a Standard, Fast Road or Bare head, there really is no better or more up to date version on the market today.

The Standard and Fast Road Heads come fully assembled with our Austin-Healey valves, guides, springs, top caps etc. All these components are also available to purchase for the Bare Head. The head is directly interchangeable for the Standard.

All are supplied with rocker and manifold stud kits.

JENSEN
Code: YCENG495AB
Sku: YCENG495AB
Availability: In Stock
YCENG495AB
£4,795.00
Qty
Code: YCENG495AR
Sku: YCENG495AR
Availability: In Stock
YCENG495AR
£5,950.00
Qty
Code: YCENG495AS
Sku: YCENG495AS
Availability: In Stock
YCENG495AS
£5,250.00
Qty

STEEL CRANKSHAFT

Steel crankshaft for the Austin DS5 engine.

Designed by our CAD team, made from EN40B steel and Nitride hardened, these will provide the ultimate performance and reliability and are currently the only steel crankshafts available. Having the original stroke and using standard main bearings, the crankshaft has 12 matching counterweights for better performance and balance. Ground rear seal to suit our rear main seal kit CENG590. 4 or 8 bolt fly wheel fitting for increased strength.

Please note that this crankshaft can only be used with our 4 cylinder Austin Healey conrods, you will need 1 1/2 sets of CENG432R.

JENSEN
Code: YCENG432K
Sku: YCENG432K
Availability: In Stock
YCENG432K
£5,950.00
Qty

Rear Crank Seal Kit - Austin DS5 Engine

When fitting this kit it will require some machining to the crankshaft and cylinder block so therefore can only be fitted during a total engine rebuild. Although full instructions are supplied it is recommended that this kit is fitted by us or a qualified engineer. (A 4.2mm Drill & M5 Tap is also required).

It is worth spending the money as, when fitted correctly, it really does stop those annoying oil leaks!

 

JENSEN
Code: CENG590
Sku: CENG590
Availability: In Stock
CENG590
£59.50
Qty

Austin DS5 Dished Top Pistons

Our Die Cast Pistons are made specially for us by Omega,  Britain's leading competition piston manufacturer. They have a dish of 14CC which will give a compression ratio of approximately 8.5:1, providing the cylinder head and block have not been skimmed.

Being lighter and having a better design than the original they are not only stronger for performance use but are also quieter for road use. We have used metric sizes in order to take advantage of the latest ring technology and reduce crank case pressure.

They are supplied with gudgeon pins to suit standard clamp conrods (gudgeon pins for fully floating rods are available to order).

The sizes stated are the actual bore sizes, all clearances have been allowed for on the piston.

Please note that these are supplied as a set of 4. You will need 1 1/2 sets for your Jensen. Please contact us after purchasing online so that we can amend your order.

JENSEN
Code: CENG409
Sku: CENG409
Availability: In Stock
CENG409
£395.00
Qty
Code: CENG410
Sku: CENG410
Availability: In Stock
CENG410
£395.00
Qty
Code: CENG411
Sku: CENG411
Availability: In Stock
CENG411
£395.00
Qty

Replacement Parts

Code: CENG413
Sku: CENG413
Availability: In Stock
CENG413
£31.00
Qty
Code: CENG414
Sku: CENG414
Availability: In Stock
CENG414
£31.00
Qty
Code: CENG415
Sku: CENG415
Availability: In Stock
CENG415
£31.00
Qty
Code: CENG409C
Sku: CENG409C
Availability: In Stock
CENG409C
£19.95
Qty

Austin DS5 - FLAT TOP PISTONS

Forged by Omega for maximum strength. These give an approximate compression ratio of 10.5:1 the crown is of sufficient thickness to allow a 6CC dish to be machined in if a slightly lower compression ratio is required.

They are supplied as a set of 4 with plain Gudgeon Pins to suit fully floating con rods.

Gudgeon Pins for standard clamp rods are available to order.

Please note that these are supplied as a set of 4. You will need 1 1/2 sets for your Jensen. Please contact us after purchasing online so that we can amend your order.

JENSEN
Code: CENG409F
Sku: CENG409F
Availability: In Stock
CENG409F
£495.00
Qty

Replacement Parts

Code: CENG413/3
Sku: CENG413/3
Availability: In Stock
CENG413/3
£9.95
Qty
Code: CENG413/7
Sku: CENG413/7
Availability: In Stock
CENG413/7
£8.65
Qty
Code: CENG413/10
Sku: CENG413/10
Availability: In Stock
CENG413/10
£12.65
Qty
Code: CENG409G
Sku: CENG409G
Availability: In Stock
CENG409G
£16.95
Qty
Code: CENG612C
Sku: CENG612C
Availability: In Stock
CENG612C
£0.53
Qty

STEEL CON ROD SET For standard crankshaft

These are H-Beam style made to our drawings and specification by Britain's leading manufacturer, with conventional fully floating little ends and can therefore only run with pistons that contain circlip grooves (i.e. our pistons CENG409, CENG410, CENG411 and CENG409F).

These are considerably lighter and stronger than standard ones. They are only suitable for use with a standard crankshaft with standard type big end bearings.

Please note that these are supplied as a set of 4. You will need 1 1/2 sets for your Jensen. Please contact us after purchasing online so that we can amend your order.

 

JENSEN
Code: CENG403
Sku: CENG403
Availability: In Stock
CENG403
£1,475.00
Qty

Replacement Parts

Code: CENG605
Sku: CENG605
Availability: In Stock
CENG605
£12.95
Qty

STEEL CON ROD SET For steel crankshaft

These are H Beam style made to our drawings and specification by Britains leading manufacturer, with conventional fully floating little ends and can therefore only run with pistons that contain circlip grooves (i.e. our pistons CENG409, CENG410, CENG411 and CENG409F).

These are considerably lighter and stronger than standard ones. They are only suitable for use with our steel crankshaft.

Please note that these are supplied as a set of 4. You will need 1 1/2 sets for your Jensen. Please contact us after purchasing online so that we can amend your order.

 

JENSEN
Code: CENG432R
Sku: CENG432R
Availability: In Stock
CENG432R
£1,175.00
Qty

Replacement Parts

Code: CENG605
Sku: CENG605
Availability: In Stock
CENG605
£12.95
Qty

A Little About Us...

Company Info

Welcome to the Denis Welch Motorsport website for Performance Parts. We cater for every aspect of work on your classic car be it road, race or rally, using our unrivalled success in many aspects of Motorsport to make your car as successful and reliable as possible.

 

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Parts Hotline +44(0)1543 472244
Office +44(0)1543 472214
Fax +44(0)1543 472339
E-Mail sales@bighealey.co.uk

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