Erland,volodkovich wrote: ↑Thu Jan 18, 2018 5:07 pm Erland, it looks like your seating velocity is too high and the valve is beating the seat. You can see the big difference in velocity at the lash point between your two cams. What is the cam velocity at seating? Cam pro plus should even give you a seating velocity in Inchs/sec I believe.
Does your software produce a report like this? While most do use inch/sec I happen to programed fps.
Stan
C:\Program_Files\Microsoft_Visual_Studio\VB98\CARFOR\cmm\COMP161.CMM
RA_Ratio_=_1.65___Lash_=_0.0000__RPM_=_7500__Smooth_=_NO
_______I_N_T_A_K_E
_______Valve_Lift________Velocity______Acceleration_______Jerk___________Velocity_fps
__1___0.00000000000
__2___0.00084448650___0.00042224325___0.00021112163___0.00010556081___1.58341218750
__3___0.00087986250___0.00001768800__-0.00020227763__-0.00020669963___0.06633000000
__4___0.00098648550___0.00005331150___0.00001781175___0.00011004469___0.19991812500
__5___0.00116928900___0.00009140175___0.00001904512___0.00000061669___0.34275656250
__6___0.00143172150___0.00013121625___0.00001990725___0.00000043106___0.49206093750
__7___0.00176563200___0.00016695525___0.00001786950__-0.00000101888___0.62608218750
__8___0.00216871050___0.00020153925___0.00001729200__-0.00000028875___0.75577218750
__9___0.00264952050___0.00024040500___0.00001943287___0.00000107044___0.90151875000
_10___0.00324802500___0.00029925225___0.00002942363___0.00000499538___1.12219593750
_11___0.00402484500___0.00038841000___0.00004457887___0.00000757762___1.45653750000
_12___0.00503066850___0.00050291175___0.00005725087___0.00000633600___1.88591906250
_13___0.00630118500___0.00063525825___0.00006617325___0.00000446119___2.38221843750
_14___0.00784494150___0.00077187825___0.00006831000___0.00000106837___2.89454343750
_15___0.00965037150___0.00090271500___0.00006541838__-0.00000144581___3.38518125000
_16___0.01171849800___0.00103406325___0.00006567412___0.00000012787___3.87773718750
_17___0.01409646150___0.00118898175___0.00007745925___0.00000589256___4.45868156250
_18___0.01683922350___0.00137138100___0.00009119963___0.00000687019___5.14267875000
_19___0.01998915600___0.00157496625___0.00010179262___0.00000529650___5.90612343750_______Cam_Calls_for_0.021"_hot _lash
_20___0.02358071100___0.00179577750___0.00011040563___0.00000430650___6.73416562500
_21___0.02760826200___0.00201377550___0.00010899900__-0.00000070331___7.55165812500