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crsgrant Samba Member
Joined: September 13, 2006 Posts: 11 Location: Portland
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Posted: Mon Apr 11, 2011 12:02 am Post subject: Any way to tell if a 2.0 rebuilt engine is hydro or not? |
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I'm at the point of starting a mystery rebuilt 2 ltr engine that is installed in my 72 bus. I know this, it is a '75 engine rebuilt by Gex. When adjusting valves the pushrods seem to be squishy when at .06 is there anyway to find out if it's hydro or not without taking out the pushrods tube and rocker arm? Didn't want to start it without proper adjustment. Help needed in Pdx! lifter puller:P |
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chabanais Samba Member
Joined: July 27, 2002 Posts: 4866
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Posted: Mon Apr 11, 2011 12:24 am Post subject: |
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If it's rebuilt by GEX lifters are the least of your problems.
As to the answer of your question:
A can tell if you have hydraulic lifters in a couple ways. First, pull either valve cover. Take a "mini Mag" flashlight and look up a pushrod tube around the rocker arm. If that little pushrod is only about the size of a big round (3/8") pencil all the way end to end and looks steel (probably brown and oily), chances are there are still hydraulic lifters in there. If instead, right behind the tip, behind the rocker arm, the pushrod steps out to a big, ugly aluminum rod (probably closer to 1/2" diameter and probably more silver in color) chances are you have solid lifters in the block. If they are all currently adjusted to somewhere in the .004-.008" range you can guess pretty much for sure.
http://www.type2.com/library/engineg/hydral.htm _________________ "I spud therefore I yam." |
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Vwman55 Samba Member
Joined: August 11, 2005 Posts: 550 Location: Valparaiso, IN
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Posted: Mon Apr 11, 2011 4:09 am Post subject: |
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It's no big deal to pull the rocker arm and one tube. All you'll have to do is torque the rocker arm and adjust the valves which sounds like what your trying to do anyway. Pull the lifter out with a magnet.
Last edited by Vwman55 on Mon Apr 11, 2011 7:18 am; edited 1 time in total |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51146 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Mon Apr 11, 2011 6:33 am Post subject: |
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If it's been sitting a long time you can likely depress a few of the lifters if it's indeed hydro. Try prying the valve ends of the rockers up away from the head with a small bar or big screwdriver, if some are springy feeling it's hydraulic. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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[email protected] Samba Member
Joined: May 01, 2003 Posts: 175 Location: camas washington
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Posted: Mon Apr 11, 2011 9:10 am Post subject: |
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I was helping him last night with the mystry motor which we asumed was a solid lifter. The rockers were all backed off as they were putting in new pushrod seals so no real initial setting to guage. Aluminum appearing push rods. As I set number 1 valves I felt that I could push in the lower rocker arm down on the pushrod a good 1/8 to 1/4 inch after it was set. Mushy is what I'd call it. This motor had sat 4 to 6 months so I thought it could maybe be hydro but didin't see any markings. Stopped us in the rain at 10pm. I know he should pull a lifter but my gut is saying hydro as it just felt different that my solids. Any ideas? _________________ 72 ASI Bus "Mill"
66 Singlecab
68 Squareback
62 Ragtop Bug
77 Westfalia |
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crsgrant Samba Member
Joined: September 13, 2006 Posts: 11 Location: Portland
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Posted: Mon Apr 11, 2011 12:17 pm Post subject: |
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I also was told you can tell by the springs between the rocker arms if they are there it's hydro. The pushrods are pencil size no step Im going with hydro on this mystery machine. Thanks! |
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busdaddy Samba Member
Joined: February 12, 2004 Posts: 51146 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Mon Apr 11, 2011 12:24 pm Post subject: |
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Suit yourself, the consequences are dire if you guess wrong.
Take the 10 minutes and remove a rocker and rod and look down the tube for the circlip, this is a GEX engine we're discussing here remember. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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crsgrant Samba Member
Joined: September 13, 2006 Posts: 11 Location: Portland
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Posted: Mon Apr 11, 2011 12:27 pm Post subject: |
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I'll look for the clip I'd hate to be wrong! |
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crsgrant Samba Member
Joined: September 13, 2006 Posts: 11 Location: Portland
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Posted: Mon Apr 11, 2011 12:30 pm Post subject: |
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What's so bad about GEX engine rebuilds? I'm clueless... |
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chabanais Samba Member
Joined: July 27, 2002 Posts: 4866
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Posted: Mon Apr 11, 2011 12:50 pm Post subject: |
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Let's just say many here have had "issues" with their longevity.
crsgrant wrote: |
What's so bad about GEX engine rebuilds? I'm clueless... |
_________________ "I spud therefore I yam." |
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kevin11 Samba Member
Joined: March 12, 2004 Posts: 828 Location: Arlington,Texas
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Posted: Mon Apr 11, 2011 3:19 pm Post subject: |
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pushrods. solid for hydro,alum. for solid. if you already have the pushrod tube off, just stick a magnet in and pull out a lifter. |
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[email protected] Samba Member
Joined: May 01, 2003 Posts: 175 Location: camas washington
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Posted: Tue Apr 12, 2011 8:10 am Post subject: |
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Is tall boy running yet? _________________ 72 ASI Bus "Mill"
66 Singlecab
68 Squareback
62 Ragtop Bug
77 Westfalia |
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crsgrant Samba Member
Joined: September 13, 2006 Posts: 11 Location: Portland
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Posted: Tue Apr 12, 2011 9:56 pm Post subject: |
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Not running yet this first time start is proving to be a bit difficult reading many pages of many books! |
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