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WR 2.2 Engine Kit

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  • WR 84mm Crankshaft
  • WR 82mm Stroker Rods
  • WR 91mm Durabar Cylinder
WR .030" Copper Head Gasket
WR CP Forged X Series Piston
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  • Underside view of WR-CP X Series Piston
  • WR HD Glandnut
  • WR Aluminum Pushrods
  • WR Cylinder Head Studs
  • WR78S Camshaft
  • WR Full Flow Filter Kit
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82.00 LBS

Product Description

The NEW WR 2.2 Engine Kit

This is the ultimate 356/912 engine! It's the result of over 12 years of testing and development by John to produce a street engine that is super durable, cool running, provides a radical improvement in the 1000 - 5500 rpm power band (right where most of us drive), and can be assembled without exotic machining, clearancing, and requires no knowledge beyond that of the average 356 mechanic. The engine width does not increase, and the stock engine tin and stock muffler fit just like original.

The NEW WR 2.2 Engine Kit now includes our WR 2.2 Big Valve Heads. The new heads are an improved cast aluminum design of the factory 356C/912 head and have new WR developed CNC chambers and ports. They include a special CNC ported manifold for the Weber 44IDF. These new heads flow 20% better than our best modified oem heads, and eliminate all the problems of old heat cycled heads at a better price. They come fully assembled and ready to install.

The WR 2.2 Engine kit provides all the parts needed to convert your stock late model 356 or 912 engine. Instructions for all case machine work is included, as well as tips for the complete rebuild. By including the Weber 44IDF carb kit already modified for 356/912 and correctly jetted for the 2.2 liter engine, and a conversion of your stock 022 or BR18 distributor,  there are no tuning headaches or obstacles for the mechanic.  No external oil cooler is needed since the WR Full Flow Filter Kit adds to the cooling of the engine. If desired the addition of an extra cooler is simple. 

We have over 50 of the 2.1/2.2 liter engines on the road with fantastic results. The longevity is the same as a 1720cc and there are no special servicing requirements. The newest WR2.2 engine produces easily over 150hp and over 150lbft of torque as tested on our new Superflow 902S engine dyno. The low rpm torque and throttle response is amazing, and fuel economy on long drives is still in the 25mpg range. The engine will pull easily to 6000 rpm and a redline of 6500 rpm is suggested. 

This engine will turn the 356 or 912 into a real performance car...with power, driveability, and reliability before only possible with a 911.

The kit includes all the parts listed below along with complete instructions:


  • WR 84mm Crankshaft with straight drilled oiling $3150.00
  • WR HD Gland Nut $75.00
  • WR 84mm Stroker Carrillo Rods with 19mm wrist-pins $1775.00
  • Clevite Tri Armour Rod Bearings $130.00
  • WR 91mm Durabar Cylinders $1700.00
  • WR 91 Pistons with 19mm wrist-pins $1050.00
  • WR Head Studs $395.00
  • WR78S Camshaft (new billet) $350.00
  • WR Alloy Pushrods $175.00
  • WR Big Valve Cylinder heads with Manifolds $4800.00
  • WR Weber 44IDF Kit w/o manifolds $1300.00
  • WR Sport Air Filters (4" or 6") $550.00
  • WR Full Flow Oil Filter Kit $595.00
  • Rebuilding of your BR18 or 022 Bosch distributor to the WR Sport Special curve $525.00. We now offer an optional electronic distributor that is sized like the 022 but has the electronic internals of the 123. It is preset with the 2.2 curve.


COMPLETE KIT $16,570.00


Photos of all parts listed above are shown. Please call with any questions.

If you're interested in purchasing the WR 2.2 Engine Kit, please call 1-562-439-3333



Q: Can I purchase the 2.2 kit parts individually?

A: You must purchase the crank/rods/pistons/cylinders/camshaft as a package since they will not work individually in the 356/912 engine. Any of the other parts can be purchase separately.


Q: Can I use my own distributor with the kit?

A: Yes, it's possible to use your own distributor. The 123, Pertronix, MSD, and other aftermarket distributors will work fine but the curve will have to be adjusted to suit the WR 2.2 engine. Our modification to the original Bosch BR18 and 022, and our new electronic distributor, increase static advance to better match the camshaft in the WR 2.2 engine.


Q: Can I use my own special cylinder heads and/or valves with the WR 2.2 Kit?

A: Yes, as long as you match the combustion chamber design to work with the WR pistons. Special pistons can be ordered for your chamber but keep in mind that we have done considerable research and testing to optimize the WR Big Valve Cylinder Heads.


Q: Does the larger engine require a better flywheel and clutch?

A: Not necessarily, but we offer a WR 215mm Lightweight Flywheel that uses a 901 pressure plate and disc. This is an excellent package for the 2.2. For the 912 we offer a modified new German flywheel that uses the 215 PP and disc.


Q: Will I need to modify my transmission?

A: A 741 transmission and synchros are required. You can use a 741 type trans with a 644 nose cone for a 356A . Stock gearing of either BBBC or BBBD is recommended. A 12 bolt ring gear is recommended. We also offer special HD axles. A GT Torque Biasing Differential is recommended to keep the wheels from spinning...a common problem with the added power;-) 

A: We now offer a true swing axle 5 speed transmission kit that uses the 901 internal gears. No body modification is necessary for the B/C model and only minor modification to the tunnel is necessary on the A model. The price is about $23K and you keep your original trans intact. 


Q: Do I have to run the Weber carbs, or can I use my Solex 40P11s?

A: We gave up on the Solex carbs several years ago. The difference in drivability and overall performance is significant with the Webers. It's possible to use the Solex carbs if you can deal with the issues and we have suggested jetting available. Larger 44mm bored out Solex carbs don't work.


Q: Can WR do the case work for me or my mechanic?

A: Yes. The case work including line bore, full flow modification, boring for cylinders, blueprinting and clean and tumble finish is approximately $2500 depending on the extra work required.


Q: Can WR dyno test and tune my engine when it's finished? 

A: Yes, at WR we offer engine dyno testing for an hourly rate. This is usually about $1500 for a 356/912. 911s are a little more. The type of testing you want to do will determine the total price.


Q: Can WR build my engine for me?

A: Yes. Depending on your engine, the parts supplied, and how complete the engine needs to be when delivered to you, we can give you a quote. It's also possible for us to build and dyno test an engine as a long block using our fan shroud, exhaust, etc. Please call for a quote.


Q: Why only 160hp. Can't we get 200hp from a 2.2 liter?

A: The goal for early engine designers was 100hp/liter. These were race engines, not street engines. The most the 4 cam 904 made in racing form was 92hp/liter and it wasn't streetable. The most powerful 2 valve naturally aspirated and carbureted street engine that Porsche produced was the 2 liter 911S. It made 80hp/liter. It was a 6 cylinder with 50% more valve area and pumping potential than a 4 cylinder. The 356 SC made about 60hp/liter and was a good street car. With the WR 2.2 we are easily making 71hp/liter which is good, especially since our torque and HP are the same, indicating a very streetable engine making good low rpm power. The only way to make more horsepower is to push the rpm up, this makes the engine less manageable at lower rpm. How much of this the owner is willing to deal with is up to the owner. For the WR 2.2, the throttle response is instant and impressive at low rpm, and it pulls easily to the 6500rpm redline. Most owners rarely go over 6000rpm and spend most of their time between 1K and 5K. 


Q: Why does it take so long to get a WR2.2???

A: The biggest bottle neck in the WR engine program has always been the cylinder heads. This problem will be solved beginning in October 2020 with the new WR Big Valve Cylinder Heads. These are cast heads that look just like original but offer several big improvements. Ports, chambers, and manifolds will be CNC ported. They will be ready and available when you order and the cost will be less than converting your original heads to WR specs. The flow is up 20% over our best modified stock head, and the best part is that they are brand new! 


Q: What about the 92mm and 94mm engine kits I've heard aboutl

A: These kits were originally made in Europe using cut down and modified VW big bore cylinders. They then use a special stud that fits into the case with 10mm threads as stock but has 8mm threads on the top to allow for a smaller hole in the cylinder head. This smaller hole is achieved by plugging the stock heads large holes and redrilling them for 8mm studs. The head nuts supporting the rocker stand also need an insert to convert to 8mm. This would all be OK except that the head stud spacing on a 356 is too small. The 94mm cylinder needs to be cut down so thin on the register in the case spigot holes that it becomes too thin. There are two problems with this: The register on the 356 is relatively long and it's difficult to hold the tolerance of the cylinder wall bore when boring it so thin. Also, it's typical to machine a slight chamfer into the inside bottom of the lower edge of the cylinder so that the piston doesn't encounter a sharp edge when it changes direction at the bottom of the stroke. This is impossible with the thin cylinders since there's no material left for a chamfer. I'd like to see one of these engines that has gone over 20K miles without cylinder problems. 


Q: Are there any upgrades and changes to the WR Engine Program?

A: Absolutely! We are constantly developing new engines packages that will eventually become new kits. In the future look for our new WR 42/36 Valve Kit, our Stock and Big Valve WR Cylinder Heads with improved flow and performance, our 1.7 Engine Kit, our 1.9 Engine kit, our new 2.2 Engine Kit - all of these complete with new WR Cylinder Heads. We also have a new 1857cc kit  that requires no machine work to the case or heads.  

Stay tuned. Lots of new fun products are coming from WR in 2021!






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