Sprint Racing Engines

Junior Sprint, Semi-Pro Sprint and Pro Sprint
380, 440, 500 & 600 Racing Engines
Air Cooled 2 Cylinder with Y pipe

Sprint racing in the Mid West is absolutely dominated by our customers. Have a Wienandt prepared engine, or get beat by one. Six straight World Championships says it all. We now have products for 380 Stock Sprint, 440 Stock Sprint, 440 Mod Sprint , 500 Mod Sprint and 600 Mod Sprint.

Jeff Ludwig, the has five undefeated seasons on WIENANDT Sprint engines. Jeff has been winning 440, 500 and 600 with his 440 cc WIENANDT engine and pipe.

Junior Sprint 380 and 440 class
Race Prep of 380 Rotax. With tuned race pipe…………$1000
Race Prep 440 Polaris or Arctic Cat with race pipe..…..$1000
Plus any new parts required to maintain quality engine.

Junior Sprint drivers all have WIENANDT engines.

Race Prep Sprint 440 Mod Polaris or Arctic Cat
Engine and pipe………………………………………..…$1700
WPT can prepare your engine with the most advanced porting, high tech head designs, and ignition curves that are matched for the WPT pipe with silencer for today’s racing.

Another first and second with WIENANDT engines

Race Prep Sprint 600 Polaris 440-550
Big Bore engine & Pipe…………………………………$2450
This is an over bore, engine. Displacement close to class limit
Good porting and head work along with a proper pipe is even more important in this new open type class.

Dynamometer Service
Racers may come to our facility or ship engines to the WPT for Dyno for tuning and evaluation of many engines in a days time or fine tune a given engine. See which of your engines is better and tune the best performance out of each one. Find the correct Rpm range, Jetting, Timing and even Spark Plugs, are things you can now verify with solid data, no longer just opinion.

WPT uses the most advanced computer engine simulation software in the world. The same software that some of the OEM’s use. Optimum Power Technology is beyond the capabilities of performance shops and uses the true science of an engine in every detail. Use it or get beat by it.

Crankcase Tunnel porting . ………………………$150- $350
Machine Cylinder bottoms…………………………….….$50
Machine Heads to proper ECR…………………….$150-$250
380, 440, 500 or 600 Sprint Exhaust pipes………..….…$450

     Bench Evaluation: Disassemble, evaluate all measurements and document only. No charge with Race Prep. Reassemble after cleaning parts if further work is not done by WPT. If/When we prepare your race engine, the above is not charged. It is part of doing it right. We need to know what you need first.

     Dynamometer Break-In Service: Highly recommended. Our test facility can do the break-in of your engine better and in more controlled conditions than can be done on a boat. This saves you time as your engine is delivered to you with knowledge that it runs correctly and is race ready.

     Dynamometer Service: Racers may come to our facility or ship engines to WPT for Dyno tuning and evaluation of many engines in a days time. See which of your engines is better and tune the best performance out of each one. Fuels, Jetting, Timing and even Spark Plugs, are things you can now verify with solid data, no longer just opinion.

     Providing Us With Equipment: You need to provide good parts to work from and WPT can prepare Quality, Legal Race Engine using techniques acquired from 25 years of preparing race engines. Each engine is prepared to the best of the ability of the parts provided. New parts will be recommended when required. It is our goal to make every engine, a winning engine.

  • Dynamometer Service (per day charge) $400.00
  • Cylinder Porting (each cylinder) $150.00 – $250.00
  • Deck Cylinder Tops (each cylinder) $25.00
  • Crankcase Mods (Transfer area) $150.00 – $350.00
  • Custom Copper Head Gasket $15.00
  • Carb Machining $45.00 – $125.00 (each carb)
  • Machine Heads to Proper ECR $150.00 – $250.00
  • 2 Cylinder Custom Exhaust Pipes $550.00
  • 3 Cylinder Custom Exhaust Pipes $800.00
  • Re-Sleeve, Finish Bore & Hone $175.00
  • Bore & Hone $55.00 (each cylinder)
  • Re-Plate (Nikasil) US Chrome $125.00 – $150.00
  • TLC Charge (per hour) $75.00