One of the most important factors in designing an custom engine is that we must emphasize power and torque within the RPM band where the engine will spend a majority of the time.

So will this engine be for a weekend warrior, drag racer, street performance racer, or basic street performance as an everyday driver? All these factors matter along with budgetary parameters and your application may be somewhat complex. Of course we'll help you make the right decisions that will fit your budget, produce power and torque and benefit the most enjoyment with your new engine. That's what we are here for!

Rebuilding an engine can be a very rewarding experience, working with us and designing the engine for your car. When you work with us you will become familiar with what your engine is. Remember that it's important not to "overbuild" and to save as much money as possible. A common fault of many other engine builders is their inability to analyze their customers needs. This produces an expensive engine with exotic parts that will never be needed for the application and in turn can disappoint the customer and create buyers remorse.

Below are the items that are included in the stage 2 long block package: Rated 700hp+

• Mahle 2618 Forged Pistons
• Manley H-Tuff Rods
• SP63 Custom Age 625+ 10mm Head Studs
• ARP Main Studs
• Clevite H-Series Main & Rod Bearings
• BSD Kit
• Keyed Crankshaft, Pulley, & Sprockets

Machine Shop Services
Your used block will go through our entire machine shop process to ensure it meets the highest specifications. We start off with a hot tank cleaning service to bring it back to factory clean and then inspect it for any cracks. The block is then bored and plate honed using a torque plate. Final clearances are checked and the block goes through a final cleaning to make sure there is no debris left over from the machining process.

Head Porting
Please see the head porting product page HERE

Crank Keying
The Mazda MZR engine relys on 3 friction washers between the crank pulley and sprockets to help keep the motor in time. This works very well for stock power levels and even mild big turbo setups. Once you reach the 500whp mark, slipping timing can become a problem. This can lead to catestrophic engine failure amounting to thousands of dollars in repairs. We have developed a square keyway which locks the crank pulley and sprockets from slipping on the crankshaft and eliminates the need to replace the friction washers and crank bolt every time it is loosened. 

Core Charge
Details on the core charge can be found HERE

Warranty
Every SP63 engine now comes with a 6 month, 6,000 mile limited warranty. More details can be found on our warranty page HERE

Shipping

All long blocks have a fixed shipping price of $420, short blocks is $300. Price is to the contiguous USA only.