(EngineSpec)2006Version
| Builder | SHIRASAWA Hidetoshi(owner) |
| Displacement | 2276cc |
| Crankshaft | Forged 82mm |
| Rods | CB Race Rods 5.5inch Cevy journal |
| Piston & Cylinder | Mahle 94B Kit with Scat Light Weight Piston Pin, 94mm SLIP IN! |
| Cam | Engle FK87 with Straight Cut Camgear |
| Crank Pulley | Gene Berg 7-1/2LBS power size Pulley |
| Valve Lifter | Scat Ultra Light Weight and LUBE-A-LOBE Lifter |
| Rocker Arms | CB Forged 1.4:1 |
| Push Rods | Scat 6061-T6 Aluminum Cut Type |
| Heads | CB 044 44mm X 37mm(in, ex) Valve Dual Springs, titan retainer |
| Carburetor | Weber 48IDAs |
| Exgaust System | 1-3/4" Marged + DynoMax |
| OilPump | BERG 30mm with relief cover |
| Oilcooler | stock + 16pass with electric fan |
| Flywheel | 12.5lbs Light weight |
| Clutch | Kennedy 2100lbs + Dual Friction Disc |
| Ignition | MSD 6AL + MSD SS Coil + MSD distributor + MSD wire(8.5mm) for Street MSD 7AL-2 + MSD PRO POWER Coil + MSD distributor + MSD wire(8.5mm) for Race |
| Spark Plugs | NGK IRIMAC 8 for Street NGK R2525-9 for Race |
| Compression Ratio | 10.4 : 1 |
2005 version からの変更点はCam, Lifter, Crank Pulleyで圧縮比をちょっと上げた程度です．．．
と書いちゃうと簡単そうなんですが，Cam変えたんで当然Case割ってますし，ついでに各所の計測や手を加えたりしています．
48IDAの現在のジェッティングは以下の通りです．
| AIR CORRECTION | 2.20 |
| EMULSION TUBE | F7 |
| MAIN JET | 1.70 |
| PUMP JET | .55 |
| IDLE JET | .70 |
| VENTURII | 42mm |
上記のセットアップで 2005年度の記録(14.604s)を更新するつもりでしたが，雨でRaceが中止となり，まだ結果が出ていません． とはいえほとんどノーセッティングだったのでまだまだこれからです．
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References:[(EngineSpec)2006Version] [EngineSpec] [(MyType2)2006]