mountune High Performance 1.6L MRX Fiesta ST Long Block
mountune High Performance 1.6L MRX Fiesta ST Long Block
Mountune's extensive knowledge of the Ford EcoBoost engines coupled with our comprehensive motorsport experience provides the foundation for our premium 1.6L Ford EcoBoost long block assembly.
Each long block starts off as a brand new aluminum Ford Fiesta ST engine block strengthened with the Cylinder Support System then skillfully assembled with mountune forged pistons, forged h-beam connecting rods, and tri-metal racing bearings.
Engine Build Specifications
| Product Code | 6064-LB-160S2 |
| Base Engine | 1.6L Ford Ecoboost |
| Bore x Stroke | 79mm x 81.4 mm |
| Compression Ratio | 10.1:1 |
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Piston |
Upgraded Forged Piston |
| Connecting Rod | Mountune Forged H Beam Rod |
| Crankshaft | OEM Fiesta ST |
| Main Bearing | Mountune Race Tri-Metal |
| Main Bolts | Premium Grade 8740 Alloy |
| Application | Fiesta ST 2014-2019 |
1.6L MRX Long Block is topped with a mountune MRX Cylinder Head - Fiesta ST
A factory Fiesta ST cylinder block which has undergone our precision MRX machining service for the best possible performance, increasing intake airflow by 51% and exhaust air flow by 24%.
Our 1.6L EcoBoost MRX cylinder head also features high-performance black nitrided intake valves, sodium inconel exhaust valves, along with our motorsport valve stem seals, and V2 camshafts.
Also included: mountune 1.6L ECOBOOST OIL CONTROL SYSTEM and mountune ICR HEAD GASKET
This long block is the perfect foundation for your Fiesta ST for high boost applications including track day use.
Cylinder Support System Information
The Cylinder Support System is a proven method of strengthening open deck engine blocks while maintaining OEM integrity. The support ring is made from aircraft grade 6061-T6 aluminum. It prevents cylinder cracking, walking, and bell mouthing.
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Estimated Build Times
Estimated Build Times
For built to order engine assemblies the current estimated build time is 10-12 weeks. (As of April 2023)
For more information please contact us.
Installation & Break-In Process
Installation & Break-In Process
To see all available installation and break-in instructions, click here.
Warranty information
Warranty information
Mountune is confident in our products and services and we proudly stand behind our workmanship. Therefore, we offer a limited warranty against defects in workmanship or materials, covering both parts and labor, for a standard period of 1-Year/12,000-Miles.
For more information see, terms & conditions.
Disclaimers & Legal
Disclaimers & Legal
WARNING:
This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards.
Click Here for emissions compliance information.
California Residents Prop 65 Information
California’s Proposition 65 entitles California consumers to special warnings for products that contain chemicals known to the state of California to cause cancer and birth defects or other reproductive harm if those products expose consumers to such chemicals above certain threshold levels. This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information visit www.P65warnings.ca.gov.
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Start your engine with a Deposit
Contact us for more informationWith a 50% deposit we can start your engine assembly process. The remaining balance will be due upon completion of your long block or short block engine.
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Flat-Rate Freight Shipping
Engine assemblies ship anywhere in the continental USA for one of two flat-rates. Long block assemblies ship for flat-rate of $350. Short block assemblies ship for a flat-rate of $100.