| Porting guide 429/460 pictorial |
| pg.4 |
| Ridges blended back parallel with valve centerline |
| When you blend the long side allow the bowl to gently angle toward the guide. This is the beginning of the long turn/side radius. Be conservative when blending the back of the bowl. If you make it too large here flow seperation will occur at the back of the bowl due to the divot at about 5:00. 12-02 |
| Begin to lay back the short turn where the rust ends and the carbon begins. Bear in mind the casting number you are working on and shape this area as I nave noted throughout these guides. The D2VE and D3VE castings have a greater distance here than the D0VE and earlier itinerations. |
| Step-3 |
| Begin to lay back the short turn after you have blended right, left and longsides of bowl |