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1-800R ETEC
Dyno Tech tested 6 Y pipes and The Crank Shop's Y pipe was the winner producing 3.3 hp & 3.7 lbs of torque at 100 rpms less then stock. Dyno testing late this past 2013 season we have found using the y-pipe, trail... |
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1000 MACH Z TWIN
The Mach Z 1000 trail porting will gain 7-8 HP, and the twin pipes will gain 13 HP @ 7800-8000 RPM's netting a total of 190HP. The pipes available are twin silenced trail pipes into two individual silencers or twin... |
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1006 & 1019 RACE ENGINE
The 1006/1019 open race engine has a very wide power band. The 1006 is expected to produce 266 HP @ 9200 RPM's with 143 lbs. of torque and the 1019 motor is around 270 HP @ 9700-9800 RPM's with 144 lbs. of torque.... |
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1025 MACH Z OR 1100 MACH Z STROKER BIG BORE
The 1025 and 1100 trail big bore kit utilizes a complete new rave valve nickicil cylinder and head. The 1025 uses the 809 stock stroke crank and stock carburetors, and produces 200 HP @ 8800 RPM's on pump gas. The 1100... |
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1100 MACH Z TWIN BIG BORE
We have decided to discontinue this kit. We are still going to have parts available for the kit. |
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1200 SKI DOO 4 STROKE
The header is a bolt on piece and is available in stainless steel or steel that is ceramic coated. Ceramic coated header weighs 5 1/2 lbs., and Stainless Steel header weighs 6 1/2 lbs. Recent dyno testing shows a 7-8... |
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1240 MACH Z TWIN BIG BORE
The 1240 Big Bore Kit will produce an additional 27 hp over a piped and ported Mach Z. The package consists of new cylinders (individual), head, 98mm coated pistons, and silenced trail pipes. Disassemble and assemble is... |
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31-CRANK SHOP CUSTOM ROTARY AND REED ENGINES
The 2 cylinder engines are available up to 1140cc and the 3 cylinder engines available up to 1500cc. So whatever size fits your style we can build it. The custom engine package includes base, RV cover or reeds,... |
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31-CRANK SHOP UNFINISHED CYLINDERS
Cylinders and head castings machined, unfinished for the following motors- Rotax 2cyl & 3 cyl., Polaris 2 cyl., Cat F-7 800/900 2 cyl., Thunder Cat 3 cyl. Please call for bore sizes and applications. |
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340/440 RACE MODIFICATIONS
We have NO pipes available for the stock engine. We were unable to significantly improve on the stock pipe without losing the much needed torque in a small cc engine. Modified engine package for snowcross or lake... |
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500 MXZ REED
We have NOT developed any trail modifications for this motor. WE ONLY have race modified packages available at this time. The improve stock and the prostock package make 130 hp @ 9600 rpms 71 lbs. of torque. The RV SLS... |
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500 POLARIS RACE ENGINES
Package consists of pipes, porting, & head inserts. The 500 race motor produces 126 HP @ 9400 RPM's with 71 lbs of torque. |
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583 MXZ, 583 FORMULA Z, 583 SUMMIT
We have developed a set of twin pipes for the 583 engine that maintain the original torque at a higher RPM with a net gain of 8-9 HP at 8300-8500 RPMs. The pipes work good on the dyno, but it takes a good tuner to see a... |
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600 FIII TRIPLE
The 600 engine is very easy to make more HP, but not so easy to make more torque. Torque is what makes a heavy small cc sled faster not necessarily HP. With our pipes we came up with a compromise maintaining original... |
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600 HO REV
We have found success with the single pipe, porting, and Team clutches on the Revs with gains up to 10 sled lengths over stock. Trail porting is around 6-7HP, single pipe 3-4HP, and single pipe muffler is weight savings... |
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600 MXZ
The 2 cylinder Rotax cylinder reed valve designed motor with the reed valves mounted onto the cylinders offers more power than the 583 rotary valve motor. Twin trail pipes will net 10 HP with 3-4 pounds of torque @... |
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600 POLARIS SNO CROSS PACKAGE
The Polaris Sno Cross Package will produce 150 HP @ 8800 RPM's and 92 lbs of torque. . Package includes head inserts, head machining for inserts or sand cast head (depending on year), cylinder porting, base tunnel... |
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600 RS MXZX
We have race modications for the 600 RS to help the motor gain 6-7HP. Send us your cylinders, rave valves, and top half on the crankcase. We recommend using the Ski Doo factory race pipes with these modifications. We do... |
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660 BIG BORE KIT FOR THE POLARIS 600
This trail package will produce 14 HP over a stock 600. The package consists of boring, porting, replating cylinders, head modifications, pistons, base porting & carb boring. The pistons used are a stock 700 piston that... |
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670 MXZ, SUMMIT, FORMULA SS & MACH I
The 670 engine is Rotax's best engine combination. It responds very well to modifications. Twin pipes net 8-10HP and 3-4 pounds of torque @ 8200-8300 RPM's over the single pipe. We also have a thicker base gasket which... |
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