Motus just announced pricing and availability for their all new MV4 Baby Block engine. You can reserve yours now for delivery this spring and summer, the price is $10,220 which includes the ECU, ride by wire intake, engine harness and fuse box. While most everyone here is focused on the Motus MST and MST-R motorcycles, the engine strikes me as equally, if not more important in many respects, because, in my opinion, it could represent the future of old school hot rodding.
We’ve covered a lot of motorcycle engine powered cars on The Kneeslider with V-Twins, inline fours, just about anything you could find in a bike has been shoehorned into a car, the small size and high performance is just too much to resist, but the brand new MV4 “Baby Block” engine designed and built for the Motus MST is different, it’s a compact and lightweight engine with strong family ties to the automotive world, it’s a cam in the block, pushrod V4 just waiting for all of the old school hot rodding that drag racers and hot rodders have been practicing for the last 60 or 70 years. At the same time, with gasoline prices well over $3.00 per gallon and CAFE regulations mandating dramatic increases in fuel mileage for new cars, the MV4 is a perfect way to transition from the old big block V8s while still being able to use all of the same hard won knowledge for boosting performance.
Look at the specs:
• 1650cc (100ci), liquid cooled, cast aluminum 90° V4 w/ steel liners
• Cam-in-the-block, 2 OHV
• Splayed lifters for maximum valvetrain stability
• Aluminum cylinder heads w/ splayed & canted valves for max. flow and combustion efficiency
• Automotive-style low mass, low inertia roller rocker arms
• Maintenance-free hydraulic roller lifters
• 4340 forged steel I-beam connecting rods
• 3-ring forged aluminum pistons with moly coating
• Wet sump w/ integral pick-up, serviceable screen, magnetic drain plug
• 4 bolt main bearing girdle for maximum strength and durability
• Investment cast 4340 one-piece crank w/ automotive-style plain bearings
• Gerotor oil pump, integrally cast internal water pump
• CFD optimized, precision cast water jackets
• Closed loop 250kBd multi-point fully sequential fuel injection
• Ride-by-wire w/ electronic throttle control (ETC)
• Cast individual runner manifold w/ 4 x 40mm contoured bore downdraft throttle bodies
• 12 bolt bellhousing (9.5” bolt circle) for easy application adaptation
• Spare bosses for alternate accessory drives and motor mounts
If you didn’t know this was designed for a motorcycle, you’d be thinking you were reading the specs for some small displacement automotive engine, or airplane engine, or boat or off road vehicle or midget racer or whatever you can dream up. How about a Mini with one of these under the hood, or any small car, or …
We wrote about this before and there was a long discussion afterwards, but after all of the hopes and doubts and wishes and skepticism that has surrounded this project and engine, the imminent availability of the MV4 as a crate engine just gets me all warm and fuzzy. And for all of you who may have missed it or forgotten about it, I’ve included the video of the prototype below, there’s a few minutes of talk leading up to a short dyno run at the end. Listen to that dyno run with your speakers turned way up. Then, listen to it again. The future of old school hot rodding? Oh yeah!
Link: Motus Motorcycles