measuring pushrods (hyd lifters)

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Mar 16, 2010 | 10:14 AM

#11

kalli

Thread Starter

6th Gear Member

Joined: Oct 2006

Posts: 6,417

From: Cork, Ireland

Quote:

Originally Posted by MBDiagMan

Use the lifters that you will actually be using in the engine for the test. The way you can do this is to use a "checking spring" in the place of your regular valve spring. The checking spring is a very light pressure spring. This will allow you to use the push rod length checker without collapsing the lifter.

well I got through to compcams and they advised the same. use a checking spring and add 50/1000" for preload ... bollocks. not really in any mood for organising checking spring and trying to find gear for changing valve springs ...

Kalli

Mar 16, 2010 | 10:40 AM

#12

MBDiagMan

3rd Gear Member

Joined: Aug 2006

Posts: 886

From: North East Texas on the Red River

Quote:

Originally Posted by kalli

great idea, but as I understood you have to preload a lifter so that the lifter actually works. (~0.03"). so i probably have to add that later to the pushrod lenght?! anyway. I'll keep researching if there's a way without me having to change valve springs. i want to do at least 2 cylinders intake and exhaust side. so that means I need more tools ...
If i find a different method, I'll post it !!

For checking purposes, just squirt oil in the side of the lifter until the lifter is fully extended, then check with that. That will give you a pattern close enough to see if the length is correct or not. If you're .030 off from a perfect length push rod, you will be okay.

Mar 16, 2010 | 10:56 AM