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Pump them up?

50K views 500 replies 11 participants last post by  Wezz 
#1 ·
Hi. Yesterday my new cam and lifters. Were dilivered But now im dnt know if i have to pump them up or put them in a container with oil. The edelbrock says no but a lot of people are saying yes . So what to do .. Thnx
 
#70 · (Edited)
Cloyes is a very good quality gear & chain set! Isn't there any where you can get push rods close? A Wrecking yard or boat yard The Volvo v8 marine engine is a Chevy 350 with volvo valve covers check at a boat repair shop and see if they have the 7.8 push rods. With all the water there LOL, there should be a place that repairs boats! many boats ran 327s & 350 engines!
Jester
 
#74 ·
CarCraft.

"It's worth discussing the fact that the rocker tip is actually quite busy across the valve-stem tip. Even with proper pushrod length, the rocker tip starts from the inboard side of the rocker. As lift begins, the rocker tip moves toward the center of the valve tip, approaching the middle of the valve at approximately half of maximum valve lift. As lift continues, the rocker tip moves past the valve tip's center toward the outboard edge of the valve stem at max lift. Then as the valve begins to close, the rocker tip retraces its movement back to where it began. In essence, the rocker tip sweeps across the valve-stem tip and then returns. This is what the rocker tip does with proper pushrod length. With either too-short or too-long pushrods, the roller tip starts in the wrong position and travels much farther. This can lead to all kinds of dangerous situations, all of which can also create valvetrain problems."

Install on one of the front rockers and watch the rocker tip as you rotate the motor.
 
#79 · (Edited)
I looked every where for an easy way to check for you! With this video, you and that tool, you can check if your push rod length is right or not!! Its very easy!




myvintageiron7512: How to check for correct rocker arm geometry : when building any engine rocker

This is the push rod length checker pic! It didn't load on the first post! LOL Its very easy to use!
Proform Parts 66789 - Proform Pushrod Length Checkers



 

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#88 ·
Stock 187 head decks are miller . Underblock dont stock valves stock rockerarms . Studs are not been mahined inhave new valve seat in exhaust and the intake is regrinded valves are regrind ... Quincendistance and base circle i dont understand
 
#96 ·
Here is a snapshot of my number one cylinder (@ TDC) exhaust roller rocker,
taken today.
My block is a stock roller cam block, the heads are Brodix IK200, head gasket
Clevite, CLE-5746, compressed height 0.026.
The pushrod is stock length and you can see the roller tip is just inboard of the valve stem centerline.
Maybe I was just lucky but stock length seems a good place to start.



Wezz The stock pushrod is way to short I can push the pushrod realy up and down. Like u see in the picture i post earlier in the topic

Have you adjusted it correctly ?
 
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