 Hydraulic Valve Adjustment Question, Hydraulic Valve Adjustment Question |
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| sweathappens |
 Feb 25 2006, 11:52 PM
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#1
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Newbie  Group: Members Posts: 22 Joined: 25-February 06 From: Prunedale Member No.: 5,636  |
I have hydraulic valves in my 1974 2.0 914. Does anyone know what the symptoms of the valves needing adjustment and what the prcedure is for adjustment.
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| ThinAir |
Feb 25 2006, 11:58 PM
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#2
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Best friends Group: Members Posts: 2,543 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region 
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I've got a 2.0L with hydraulic valves in my son's '75 bus. When I had the engine rebuilt a couple of years ago the shop told me that the procedure was to tighten the adjuster screws until there was no gap, then tighten 1-1/2 turns more and lock it down. They made a big deal out of saying it needed to be 1-1/2, not 2 turns. I've not touched his valves since I set them up.
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| sweathappens |
Feb 26 2006, 10:37 AM
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#3
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Newbie Group: Members Posts: 22 Joined: 25-February 06 From: Prunedale Member No.: 5,636 |
Thanks,
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| Katmanken |
Feb 26 2006, 11:51 AM
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#4
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You haven't seen me if anybody asks... Group: Members Posts: 4,738 Joined: 14-June 03 From: USA Member No.: 819 Region Association: Upper MidWest |
One, change the oil and filter. Use synthetic 20-w50 and a GOOD filter. Run for awhile if you have stuck clanking lifter to disolve deposits.
Two, Loosen the valve screws to touching or a slight gap and tighten. Three, put on valve covers and run the engine for 5 minutes or so to fully pump up the lifters. The gap allows partially compressed lifters to fully pump up. Four, remove valve covers and readjust valve screws in to just contact valves, and 2 additional HALF turns in to partially compress lifters. Retighten nuts, put on valve covers and drive. The manual is wrong at 2 full turns. Most of the top guys do the 2 half turns. Use this on my Vanagon hydros. Ken |
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| sweathappens |
Feb 26 2006, 11:58 AM
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#5
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Newbie Group: Members Posts: 22 Joined: 25-February 06 From: Prunedale Member No.: 5,636 |
Thanks Ken,
Do I adjust the valves in the same sequence as if there were solid lifters? Why do you refer to 2 half turns as apposed to one full turn? Dave (IMG:http://www.914world.com/bbs2/html/emoticons/pray.gif) |
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| Tom Perso |
Feb 26 2006, 01:31 PM
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#6
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Crazy from the Cold... Group: Members Posts: 647 Joined: 8-August 03 From: Kalamazoo, MI Member No.: 1,003 |
Ever try to make one complete turn with your hand? Severe tendon damage is sure to follow.
Don't even think about a full 1.5 turns! Yikes!!! (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif) |
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