ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-35 1 2 3 4 5 6 7 8 9 10 11 CONTENTS ELECTRICAL FRAME FRONT END CONTROL WHEEL ENGINE DRIVE TRAIN FUEL EXHAUST GENERAL REFERENCE Size C630 Nickel/Bronze Cast Iron Model & Year O.D. Intake Exhaust Intake Exhaust VALVE GUIDES FOR ALL MODELS (CON’T) C630 Nickel/Bronze We choose to use the copper based C63000 nickel-aluminum bronze as a material to make our bronze valve guides, because of its ideal characteristics for the application. The 5% nickel content provides superior resistance to wear, and the approximately 80% copper content delivers outstanding heat conductivity. KPMI® guide profiles are designed to have minimal effect on the airstream, while maintaining critical cross sectional thickness in high temperature areas, which promotes high performance and endurance. Cast Iron After chemically separating several samples of cast iron material, and analyzing and evaluating the test data, we decided to have our own specification of cast iron made exclusively for us. We specify elements such as carbon, silicon, manganese, nickel, chromium, copper and sulfer to produce a highly pearlitic structure with dense fine grains, and excellent wear resistance. Superior Airflow Guide profiles are designed to have as little effect on the airstream as possible, while maintaining critical cross sectional thickness in high temperature areas, promoting both high performance and endurance. Tight Tolerances High concentricity tolerances are held to insure that the best possible geometry between the seat and guide is maintained when the guides are replaced. This means minimal material removal from the seat, time savings, and consistent chamber volumes, when valve jobs are performed. Twin Cam 2005/2011 Std –– –– 61640 61644 88” - 103” .001 –– –– 61641 61645 .562” STD O.D. .002 –– –– 61642 61646 .010 –– –– 61643 61647 Milwaukee-Eight® 107” & 114” Std 61675 61679 –– 61687 2017/Later .001 61676 61680 –– 61688 .002 61677 61681 61685 61689 .010 61678 61682 61686 61690 Ironhead Sportster 1957/Early 1983 Std 61742 61746 61593 61590 .5645” STD O.D. .001 61743 61747 61594 61591 .002 61744 61748 61595 61592 .010 61745 61749 61596 61597 Flathead 45” 1930/1973 Std –– –– 61750 61750 .001 –– –– 61751 61751 .002 –– –– 61752 61752 .010 –– –– 61753 61753 Flathead 74” & 80” 1930/1973 Std –– –– 61754 61754 .001 –– –– 61755 61755 .002 –– –– 61756 61756 .010 –– –– 61757 61757 C630 Nickel/ Bronze Valve Guides Cast Iron Discontinued, no longer in stock |
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