cfgioja

iTrader: (2)

Just curious on how to measure valve to piston clearance. i know you cant cut the engine in two or just hold a valve at what you think might be the right height.

I just want to make sure the new high lift cam will clear my pistons.

vettenuts

iTrader: (4)

Will the heads be off the car? There are a few ways to do this.

1SLwLS1

iTrader: (6)

Clay Method - Heads off

or

Dial Indicator and Checker Springs Method - Heads on

cfgioja

iTrader: (2)

The heads are off of the engine.

Jim_PA

iTrader: (9)

Get (or make) 2 solid lifters, put some clay on the piston, tighten the head down without a gasket, make 2 revolutions, remove head, measure the thinnest part of the clay, add compressed head gasket thickness, review the results.

cfgioja

iTrader: (2)

why do I need solid lifters? will my roller lifters not work?

Jon@Texas-Speed

iTrader: (18)

The solid lifter gives you a true measurement. The hydraulic lifter will compress and you will not get the correct number.

Jon

vettenuts

iTrader: (4)

I would use your old gasket to do this as no gasket and a tight clearance can lead to the valve hitting the piston.

You can use the roller lifters with a dial indicator, check springs, adjustable pushrod and a very careful touch.

cfgioja

iTrader: (2)

How do I go about making a solid lifter if all I have is a hydraulic? If I use a solid one on my hydraulic setup wont the numbers be off?

cfgioja

iTrader: (2)

I got a set of testing springs and was able to use my hydraulic lifters. i got the clay thickness with out head gasket. I need to know what the over all clearance needs to be. i will research but any help will be nice. Thanks

Black 99 Bird

iTrader: (31)

70 to 80 thou. seems to be the norm.

cfgioja

iTrader: (2)

I measured, .06-.07 in with a digital caliper and clay impressions without a head gasket. So including a head gasket I should be right in the .1 ball park, which is good right?

Black 99 Bird

iTrader: (31)

Sounds good!