2.3 Ford lifter issues

[CnDRacing]

Has anyone else had problems with 2.3 Ford hyd lifters "mushrooming" the crimped on tops? Once this happens the engine either misses and/or runs "flat" at the upper rpm range. I've been having this issue for the last few weeks. Engine guy says springs are set correct. RPM has been between 7500 & 7800. Using std oil pump and 20w-50 oil.

Any help into what is causing this or how I can fix the problem?

Thanks

[drtlvr]

110-125 seat 250-275 open spring pressure. .040-.050 lash with lifter collapsed.

[Big E tech]

Dirt lover is correct! Sounds like you have exceeded the rpm that you have springs to control!

[CnDRacing]

Thanks for the information guys.

Big E, do you stock springs that would fit my application and if so, what is the part number?

[drtlvr]

They also have printable instructions on their site on setting up hydraulic heads.

[Big E tech]

Use our pn#E3207 for valvesprings on the hydraulic heads

[CnDRacing]

Thanks Big E
I ordered those and the matching retainers last week.