Ford AU SOHC 4.0L Intech Rebuild Kit with Spool H Beam Conrods and CP Forged Pistons
Ford 250 XFlow Rebuild Kit with Spool 200 CID H Beam Conrods and Ross Racing Pistons
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Ford 250 XFlow with Ford 200 CID rod and Ross Racing Pistons Rebuild Kit
This Rebuild Kit includes the following quality parts:
- Spool Forged Ford 200 CID length H Beam Conrods (ARP 2000 3/8 bolts)
- Ross Forged Pistons (Rings, Pins and Locks)
- Cometic MLS Head Gasket
- ACL Race Series Main Bearings - STD or 0.25mm
- ACL Race Series Big End Bearings - STD or 0.25mm
Ross Racing Pistons Feature:
These Pistons are custom made for Spool and rated at 900-1000hp by Ross Racing Pistons.
With upgrade pins Ross rate these pistons up to 250 bhp per cylinder.
- Compression Height: 1.17"
- Bore Size: +0.40" / 3.720"
- Pin: 0.912"
- Pistons come with NPR Gas Nitrided top ring, three pcs. oil
- 0.225†wall Carbon steel
- Forged 2618
- Locks
All of Ross Racing Pistons (since 1985) have been forged from 2618 billet bar stock and have been heat treated and aged to a T61 condition (2618-T61). 2618-T61 is the material that is used when fatigue resistance and durability are of prime importance by all premium racing piston manufacturers.
This material has less than 1% silicon particulate content. High silicon content pistons (forged from 4032 or MS75) will not stand up to the most extreme stress placed on many racing pistons. If a crack starts to form in a high silicon piston it will continue until the piston experiences a catastrophic failure. Simply stated, adding sand to the aluminum only makes it more brittle. In the rare instance of a 2618-T61 piston cracking, the crack will continue to an area where the stress is not as great and will then stop. Another advantage of 2618-T61 over the high silicon pistons is the ability to keep its shape under extreme pressure and high RPM's. "Skirt Shrinking" is not a problem with ROSS Racing Pistons.
Spool Connecting Rods Feature:
- ARP 2000 fasteners (L19 fasteners are available as an upgrade)
- High tensile 4340 forged steel
- 2 Piece forging
- Hardness of HRC36-42
- Dowelled caps for precision alignment
- X-RAY & Sonic tested
- Quenching and heat treated
- Shot peened
- 100% Magnafluxed
- Weight Matched Sets +/- 1 gram
- Vacuum degassed to remove impurities
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout. If you are unsure get in touch with [email protected]
Note: We recommend Joe Gibbs Break in Oil for all new engines.
| Product Name | Ford 250 XFlow Rebuild Kit with Spool 200 CID H Beam Conrods and Ross Racing Pistons |
|---|---|
| Brands | Spool |
| Engine | 250 XFlow, Ford 200 |
| 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.
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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 are the recommended torque specifications for the ARP 2000 bolts included in the conrods?
For the ARP 2000 bolts in the Spool H Beam conrods, the recommended torque specification is around 55 ft-lb when using ARP Ultra-Torque lubricant. Always refer to ARP's latest instructions for the most accurate guidance.
What machining is required for the Ross Racing pistons in this rebuild kit?
The Ross Racing pistons require correct bore clearance and ring gaps to be set by the engine builder. Ensure that the bore is honed to the specified size and that the ring gaps are adjusted according to your engine's intended use and performance goals.
Can I use this rebuild kit for applications exceeding 1000hp?
While the Ross Racing pistons are rated for 900-1000hp, exceeding this range requires careful consideration of machining, clearances, tuning, and fuel quality. Reliability at higher power levels depends heavily on the overall build quality and setup.
What is the significance of using 2618-T61 material for the Ross Racing pistons?
The 2618-T61 material used in the Ross Racing pistons offers superior fatigue resistance and durability compared to high silicon content pistons. This material maintains its shape under extreme pressure and high RPMs, reducing the risk of catastrophic failure.
Is line boring necessary after installing the main caps and girdles?
Yes, line boring is often necessary after installing the main caps and girdles to ensure proper alignment and fitment. This step is crucial for maintaining the integrity of the engine's rotating assembly.
