Stock Bore XB9 Forged Pistons

[08herobolt]

Anyone use forged XB9 pistons? What kind were they? Where did you get them from?

Thanks for the help.

JP

[Cosworth]

Check out hammer performance.
Any reason you want forged? Just curious

[08herobolt]

I'm going to go racing. I'm looking for higher compression in an S1 and new engine internals.

[theMelvster6]

Wiseco has .010" over pistons which equate to Stock 10:1 Compression for XB9 or 12:1 Compression for XB12

NHRS has .015" over pistons for XB9 with 10.5:1 Compression

If you are putting a Buell XB9 topend on your S1...you need to be aware the head chamber is different on all 04+ XL and 03-10 XB's and the cylinders have bigger fins for better heat dissipation...ALSO putting 12:1 compression to a stock 1200cc crank shaft will guarantee a short life span...either bent rods, crank bearing or rod bearing failure. if you are going to put that much compression to it...you better have a crank built to handle it.

[08herobolt]

Thanks Melv. Didn't think about the rods. Do you know of anyplace that sells forged rods? I plan on rebuilding the engine after every 2-3 races.

[theMelvster6]

You can get a pretty stout crank built. Carrillo has nice rods. Give Darkhorse crankworks a call. They are about the best for building up a solid crank.