Spool Ford Barra / XR6 Turbo / 4.0L DOHC – 4.2L 103mm Stroker Kit
We carry a limited range of pistons for this kit in stock. If we don't have your exact requirements it will take 6-8 weeks to have pistons made.
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
Spool 4.0 Litre DOHC Barra / XR6 4.2L 103mm Stroker Kit
The 103mm Stroke Crankshaft increases cubic capacity to 4.2 Litres and comes with the Drag Pro I Beam Custom Conrods
These kits may require a custom pistons which will take 14-20 weeks once ordered
This Kit includes the following quality parts:
- Spool Billet 4340 Nitrided Full Counterweight Crankshaft - 103mm Stroke
- Spool Drag Pro I beam custom conrods 156mm c/c with ARP2000 7/16 bolts (ARP L19 Bolts available as an upgrade)
- Spool Custom CP Extreme Boost Forging 2618 Forged Pistons
- 9310 0.200" / 5mm Wall Thickness Gudgeon Pins standard (0.250" Pins available as an upgrade)
- We can arrange custom CP pistons to any bore size and comp ratio - custom piston surcharge applies
Note: Clearancing of the cylinder block is sometimes required.
| Product Name | Spool Ford Barra / XR6 Turbo / 4.0L DOHC – 4.2L 103mm Stroker Kit |
|---|---|
| Brands | Spool |
| Engine | Barra XR6 |
| Make | Ford |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
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If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What is included in a typical Spool engine kit?
Kits usually include pistons, rings, rods, bearings and related hardware depending on the engine family. Check the listing for exact inclusions.
Do I still need machining with a full engine kit?
Yes. The block must be honed and all clearances checked and set by your builder. Assembly should only occur after full measurement and verification.
What is the benefit of using the Spool 103mm Stroker Kit for the Barra XR6?
The Spool 103mm Stroker Kit increases the engine's cubic capacity to 4.2 litres, enhancing torque and power potential. This is particularly beneficial for applications requiring higher performance, such as drag racing or circuit racing.
What are the requirements for fitting the Spool Drag Pro I Beam conrods?
The Spool Drag Pro I Beam conrods come with ARP2000 7/16 bolts, which should be torqued to around 75 ft-lb using ARP Ultra-Torque lubricant. Ensure that the big-end and small-end of the conrods are honed to the correct size for your specific application.
Are custom pistons necessary for the 103mm Stroker Kit?
Yes, custom pistons are typically required for the 103mm Stroker Kit to ensure proper bore clearance and compression ratio. The lead time for custom pistons is approximately 14-20 weeks once ordered.
Is clearancing of the cylinder block necessary when using this stroker kit?
Yes, clearancing of the cylinder block is sometimes required to accommodate the increased stroke of the crankshaft. This is a critical step to prevent any interference during engine operation.
What is the material and thickness of the gudgeon pins included in this kit?
The kit includes 9310 gudgeon pins with a standard wall thickness of 0.200 inches (5mm). An upgrade option for 0.250-inch pins is also available if additional strength is required.
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