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| | | | Joined: Jul 2011 Posts: 257 Shop Shark | | Shop Shark Joined: Jul 2011 Posts: 257 | So I just can't get my Hydraulic Lifter issue under control. The rebuilt ( NOT! ) engine I bought had used lifters in it, they would start out nice and quiet and then start to tick when warmed up. So I bought a complete set of new lifters,installed and adjusted. They start out noisy and after 10min of driving they quiet down and will stay quiet. This is everytime I cold start the engine, when restarting after warmed up they stay quiet, but after sitting overnight, BAM, noisy. I'm using a straight 30wt, an old timer says that's my problem, " oils to thick, need a multiweight in there ". Is this true? Could this be my issue?? I would LOVE to remove these hydraulic lifters and pushrods and install a solid lifter/pushrod setup, but I know I can't, I'm stuck with what I bought :mad: | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy AZ59apacheguy, the 30wt. oil would not be the problem, how is your oil pressure? Usually once a lifter is full of oil they don't usually leak back down, could there be an internal oil delivery blockage in the block? What engine are we talking about? | | | | | Joined: Jul 2011 Posts: 257 Shop Shark | | Shop Shark Joined: Jul 2011 Posts: 257 | Hi, thanks for the reply. Sorry, it's a 235. Oil pressure upon start up is above 30lbs and will stay there untill the oil warms up and thins a little. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Lifters that are noisy on start up, then quiet down when they warm up, will usually quiet down after they wear in.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: May 2007 Posts: 1,718 Moderator: 60-66 Trucks; North Eastern Bolters | | Moderator: 60-66 Trucks; North Eastern Bolters Joined: May 2007 Posts: 1,718 | I have similar circumstance occurring. 62, 283 in my case. How do I diagnose oil pressure, or oil delivery problems? I don't have a pressure gauge. Only a warning light in cab. | | | | | Joined: Feb 2000 Posts: 5,219 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,219 | How do you have them adjusted?
zero lash
1/2 turn down
3/4 turn down
1 turn down
Try to adjust one with the engine running, tighten it till the engine misses (holds valve open) then loosen till the rocker arm ticks. This will give you a idea of how much internal travel the lifter has. I would stay on the deep side of the travel range.
Joe | | | | | Joined: Jul 2011 Posts: 257 Shop Shark | | Shop Shark Joined: Jul 2011 Posts: 257 | How do you have them adjusted?
zero lash
1/2 turn down
3/4 turn down
1 turn down
Try to adjust one with the engine running, tighten it till the engine misses (holds valve open) then loosen till the rocker arm ticks. This will give you a idea of how much internal travel the lifter has. I would stay on the deep side of the travel range.
Joe This is what I ended up doing, so far they are a quiet. They were even quiet upon start up. We'll see they sound after a long drive. I'll let ya know this weekend. | | | | | Joined: Jul 2011 Posts: 257 Shop Shark | | Shop Shark Joined: Jul 2011 Posts: 257 | [quote=Joe H]
This is what I ended up doing, so far they are a quiet. They were even quiet upon start up. We'll see they sound after a long drive. I'll let ya know this weekend. Lifters that are noisy on start up, then quiet down when they warm up, will usually quiet down after they wear in. Well, they are still noisy. I guess I'll keep driving and see if they break in and get quiet like someone else stated earlier in this thread | | |
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