Stroker Crank, Will this work for a 2270? Options

[gregrobbins]

QUOTE

What is offered is a Type IV- 78 mm stroke performance crankshaft made from an original German VW forging, shot peened, stroked, counterweighted, machined, precision ground, and dynamically balanced. The main bearings are either .010 or .020 under standard and the rod journals are 50 mm diameter.  If you are building a high performance engine for street or off road, where you want the incredible torque and power of a full counterweighted crankshaft, this is the crankshaft you have been waiting for.

This crank is being offered by a shop that builds off road air cooled race motors. Would this work on a 2270? Or are you better off with a crank that has 55 mm rod journals and uses type I rods?

This crank is priced at $300 which seem reasonable.

[Jake Raby]

It has stock 2 liter rod journals..

Like mentioned above you only have 3 choices of rods with it

Stock 2 liters- They are too short for even the stock stroke crank, heavy as hell and generally suck for making a good combo. You can lighten them and do whatever you want and you are still stuck with a 650+ gram rod with a 24mm wrsit pin that limits the piston selections, especially those with higher pin heights.

Pauter- 800 bucks and still heavy

Carrillo- 1450 bucks.

The other issue is that the best bearing made for this journal is the std 2 liter VW bearing by Kolbenschmidt. These bearings suck for performance because they are only Bi Metal.

By using my crank or any other with a TI rod journal you are capable of creating a good rod ratio and the selection of rods is broad and a set of H beams is about 300 bucks instead of 1400!

Also we have Clevite Tri Metal rod bearings for the TI journal- these bearings are tough as nails compared to the 2 liter bearing. The piston selections are broad and much lighter with their 22mm pins Vs the 24mm pins


Doing this my way is cheaper, easier and creates a combo that not only is proven to work but also is correct mathmatically- its a much smarter way of doing things.