Simply put - we’ve been at this for a very long time! After investing a lot of our time and resources, we have identified several problem prone areas within the factory motor design that limit your fun-factor. You can rest assured, that our horsepower specification that we’ve associated with our in-house built motors still leaves some head room.
We choose our rod and main bearing clearances based on the ultimate RPM range that your new motor will see. We also give you the choice to choose your engine compression ratios. You have two choices of 8.5:1 or 9.8:1 and whichever you choose, please keep in mind of the type of fuel that the motor will see most often. This is an important part when ordering your motor. Typically, we’ll suggest the higher compression to run on race gas or E85.
Since Motion Lab is a wholesale distributor for Manley Performance and has established relationships with other major engine parts manufacturers, we are able to provide the most proven and reliable combination of Subaru engines on the market.
Additional build information: Motion Lab typically implements the use of a torque plate for our performance line of motor builds (not used for standard rebuilds). Our build tolerances are redundantly checked throughout the build process, which includes:
- Individual (ring to bore) ring end gaps augmented
- Individual piston-bore clearances checked
- Wrist pin bore checked
- Main, rod, and thrust bearing clearances checked
- Strict rod bearing eccentricity measurements
- Big-end rod bore roundness checked
- Small-end rod bore checked
- Crank straightness checked
- Block decks checked
Subaru EJ255/257 (04-Present)
ML 2.3L Blocks
- ML675DS 2.3L
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Similar to the ML 2.5L line-up, the ML “DS” blocks receives a shorter stroke for higher revving! We add our exclusive high RPM crankshaft and connecting rod modification to the build and treat the crank with a hardening process. The upgraded ARP Age-625+ rod bolts allow for worry-free high RPM revving.
Recommended Power: 550-700whp/8800rpm
- H-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- 99.5mm
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New 75mm Factory Crank
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$5,393.00
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- ML825DS 2.3L
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The ML825DS is a beast! It is built around the strongest rotating parts available on the market! It goes to next level above and beyond the ML675DS by adding Manley’s I-Beam rods to handle 9000 RPMs and higher cylinder pressures. We also perform our exclusive crankshaft and rods modification.
Recommended Power: 650-825whp/9000rpm
- I-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- 99.5mm
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New 75mm Factory Crank
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$6,393.00
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- ML1300 2.3L
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The ML1300 is BOMB PROOF - all the above with the addition of AEBS sleeves, a Manley 4340 billet crank, and 9310 alloy wrist pins. We originally built this this block for racers and hardcore enthusiasts. It’s the best Subaru block on the market - the best that your hard-earned money can buy!
Recommended Power: 1300whp/9500rpm
- I-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- 99.5mm
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- 75mm Manley Performance Crank
- 4340 Chromoly Billet
- Heat treated
- Stress relieved and shot-peened
- Dual-main oiling for high RPM
- Gun drilled counter weights
- Nitrided
- Magnafluxed
- ML-Spec Wet sleeved Factory Block (absolutely the strongest block available)
- AEBS Sleeves
- AEBS sleeves provide the strongest upper cylinder deck strength for highly boosted applications
- Superior cooling over dry sleeved blocks
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$8,979.00
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ML 2.5L Blocks
- ML500 2.5L
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This is our entry-level block but certainly up for the task of holding big power. Light years better than a standard Subaru short-block but lacks some of the finer details of the ML500+ line. This is a great choice for those looking to have a stout daily driver but with the ability to turn the wick up when needed.
Recommended Power: 400-500whp/7200rpm
- New Factory Block
- New Factory Nitrided Crank
- New Factory Bearings
- New Factory I-Beam Rods
- Forged Pistons
- 4032 forging offers quiet operation with strength
- Chromoly Wrist Pins
- Anti-friction skirt coating
- Off-set wrist pin
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$2,989.00
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- ML500 Plus 2.5L
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The ML500+ block adds refinement in terms of balance and strength over the standard ML500. The H-Beam rods are light and strong and the 2618 pistons are race proven.
Recommended Power: 475-575whp/7200rpm
- H-Beam Manley Rods
- ARP2000 Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- Chromoly Wrist Pins
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New Factory Nitrided Crank
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$4,479.00
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- ML600 2.5L
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Like the ML500+, the ML600 adds our exclusive high RPM crankshaft and connecting rod modification to the build. The upgraded ARP625+ rod bolts also allow for worry-free high RPM revving.
Recommended Power: 575-650whp/8200rpm
- H-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New Factory Nitrided Crank
- ML-Spec High RPM Crank and Connecting Rod modification
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$4,998.00
Buy Now >>
- ML700 2.5L
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The ML700 steps it up to Manley’s top of the line I-Beam “Turbo-Tuff” rods for a higher horsepower capacity.
Recommended Power: 650-750whp/7800rpm
- I-Beam Manley Rods
- ARP2000 Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New Factory Nitrided Crank
- ML-Spec High RPM Crank and Connecting Rod modification
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$5,459.00
Buy Now >>
- ML800 2.5L
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We build the ML800 around the strongest rotating parts available on the market! It goes to next level above and beyond the ML700 by adding ARP’s best connecting rod bolts available to handle 8500 RPMs. We also perform our exclusive crankshaft and rods modification.
Recommended Power: 700-825whp/8500rpm
- I-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- New Factory Block
- New Factory Nitrided Crank
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$5,693.00
Buy Now >>
- ML1200 2.5L
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The ML1200 is BOMB PROOF - all the above with the addition of AEBS sleeves, a Manley 4340 billet crank, and 9310 alloy wrist pins. We originally built this this block for racers and hardcore enthusiasts. It’s the best Subaru block on the market - the best that your hard-earned money can buy!
Recommended Power: 1200whp/8500rpm
- I-Beam Manley Rods
- Custom ARP AGE-625+ Upgraded Rod Bolts
- ML-Spec Rod and Main Bearings
- 2618 Forged Manley Pistons
- Choose 8.5:1 (or) 9.8:1 Compression Ratio
- 9310 Alloy Wrist Pin Upgrade
- Anti-friction skirt coating
- Off-set wrist pin
- 79mm Manley Performance Crank
- 4340 Chromoly Billet
- Heat treated
- Stress relieved and shot-peened
- Dual-main oiling for high RPM
- Gun drilled counter weights
- Nitrided
- Magnafluxed
- ML-Spec Wet sleeved Factory Block (absolutely the strongest block available)
- AEBS Sleeves
- AEBS sleeves provide the strongest upper cylinder deck strength for highly boosted applications
- Superior cooling over dry sleeved blocks
Customer to pay extra for shipping: Contact us for a shipping quote, to arrange installation or local pickup.
$8,679.00
Buy Now >>
