Thread: why no compression

Tweet

it called bent valves? or bad valve job bad???. lash set wrong holding off the valve seat???? i would have to look that piston up i know them by dome not numbers but i doing two 427 now both with old trw piston about the same as speed pro for valve notch .the one 427 with a 246/254 @050 621/621 on lsa108 with them small lsa will not fit in a bbc with trw or speed pros pistons they need to be cut . less some ones has cut them . the running lash may save you but ? for PV room ??? never had that kind of luck i have had to cut the pistons .your running a 2.300 intake or 2.250 intake valve in the merlin heads ? over the years i have had to cut for PV room and with your cam you would or they change up the valve cuts in the pistons . thats why i do not used them much .hard to beat a SRP . but i understand the used what you have thats why i have to fly cut some 427 pistons today