New Cams In Now Get Lifter Noise

[t304vkcalais]

ok so got some custom grind cams for my car 285.14 duration intake 276.24 duration exhaust 0.35921 peak cam lift intake

0.35728 peak exhaust cam lift.

now my issue is this, when i give it a some stick i get lifter noise and in some cases i get it missfireing sounds like a lifter isnt working correctly.

do i need bigger valve springs suited to the increase in lift?

cheers tim

[kitto]

What engine?

Did you use zinc assembly lube when putting them in?

Did you run the cams in?

[boostn0199]

I reckon would be the springs if there still std ones.

[StevenCJR31]

new cams amd old lifters are a very bad idea.ALWAYS use new lifters with a new/ reground cams

[t304vkcalais]

used correct lube, did run them in.

yes still are std lifters, sure cam said they will be fine to use, but now im getting the issue with them.

could i get away with getting a new set of supertech upgraded springs or do i need lifters as well?

was considering going solid but alot of money to spend

[StevenCJR31]

new cams amd old lifters are a very bad idea.ALWAYS use new lifters with a new/ reground cams

YES, you need the lifters

[t304vkcalais]

ok so it says here to install these cams with intake/exhaust bucket lifts of .044"inch/ .015"inch at tdc for suggested intake/exhaust centrelines of 108*/116* respectively. use minnium valve spring loads: 70lbs on the seat, 195 lbs at full lift,280 lbs/inch spring rate approx.

i got no fing idea what i got to buy now, anyone got an idea or can put me onto someone who would know?

tim