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Discussion Starter · #1 ·
How can I tell which one do I have in my '70 GT, I'm getting ready to do a valve adjustment, and reading through the posts I realized that I don't know what I have.
Thank you.
 

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Curve Crazy GT
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i believe , but i may be mistaken that a hydrolic lifter has a small hole threw it, about in the middel of the side, and the solid does not.


chris
 

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Old Opeler
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Yeah! But ...

Sorry! Can't see the hole in the side while they are still in the head.....

When the motor is stopped try pushing down on the lifter end of a couple of rocker arms. If there is just a bit of a gap and the lifter "button" will not compress then you have solid lifters. If there is hardly any clearance and the lifter "button" ( the bit the tiny sliding ball on the rocker locates in) should compress against a quite heavy spring and move up & down a couple of millimetres. You can compress this spring in a new hydraulic lifter by holding the lifter between thumb and finger, so the spring is no hugely strong.
The other, visual, telltale sign is a crimped metal capping ring holding the lifter "button" in place on hydraulic lifters - the solids do not have this ruffed collar around their necks ... searching for picture.

Now for a picture... : The one on the right is an Opel hydraulic lifter - the left is a Ford Orion hydraulic lifter. See the steel blue pressed band around the lifter below the "button" - The Ford one has a "ruffle" !
 

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Al Olmo said:
How can I tell which one do I have in my '70 GT, I'm getting ready to do a valve adjustment, and reading through the posts I realized that I don't know what I have.
Thank you.
If you have a '70 GT (which your signature says you have two of), and the engine hasn't been fiddled with, you should have solid lifters, a three-bearing cam, and flat top (high compression 9.0:1) pistons.

HTH
 

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Discussion Starter · #6 ·
Thank you friends, know I have a good idea of how to go about it, I'm getting ready to do a valve adjustment job and I need it to know what I was up against, they are solid it is a stock 1970 GT.
Thank you again.
 

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Curve Crazy GT
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is this solid or hydrolic???

does any one have a picture of a solid and a hydrolic lifter
i have mine out and i kinda wanna know. thanks
 

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Curve Crazy GT
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ya i saw that but i was wondering what a solid would look like, just kinda a side by side comparison
 

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I'm pretty sure there is a side by side picture here somewhere. If not I have a set of both I can take a picture of tomorrow. Jarrell
 

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Curve Crazy GT
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so taht means i have a hydrolic lifter, but it has the high comp asterics on teh motor, waht does taht mean, i thouhgt only the low comp motors had hyd. lifters??
 

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What year model? It could have been at the end of the change over, and they had blocks and newer heads. Then again it could have been done by a PO and the head rebuilt that way. Hth. Jarrell
 
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