RedMackWheeler Posted 13 hours ago Share Posted 13 hours ago Hello, Just installed new heads on 99 CL with E7460 etech with an engine brake.. It has spring loaded push rods. When adjusting valves, I adjusted them without compressing the push rod spring but engine seems doggy and seems like there is a lot of noise coming right out the air cleaner. I've never had any experience with spring loaded push rods and the book didn't say to compress the springs when adjusting the clearance so I didn't. But now I'm wondering if not doing so could be not allowing the exhaust valves to fully open and so when the intake valve opens the air that didn't get let out through the exhaust, is actually getting released through the intake valves since it is still under pressure. Thanks in advance for your help. Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/ Share on other sites More sharing options...
Joey Mack Posted 6 hours ago Share Posted 6 hours ago Yes you need to compress the springs. Did you also set the bridge clearence to .010" on both ends? And did you rotate the engine according to the book. And where you sure you were up on #1 when you started the ajustment ? I hope posted several times about adjusting the valves on these. You may be able to find my lengthy posts. Jojo Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586056 Share on other sites More sharing options...
RedMackWheeler Posted 5 hours ago Author Share Posted 5 hours ago Thank you Jojo. Yes, I did use the flywheel valve adjusting marks to start with #1 and then 5,3,6,2,4. I did also set the bridge clearance on the exhaust valves to .010. The yokes/ bridges on the intake valves for this engine did not seem to have any adjustment to them, so I did not do anything to adjust those. Am I missing something about these bridges? After I posted, I saw a post where you helped out Mcrachet1 with a similar problem in May of 2024. JoeH also added what seemed like factory instructions for spring loaded push rods. I think I have something to go on now. Thank you for your help. Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586058 Share on other sites More sharing options...
Joey Mack Posted 5 hours ago Share Posted 5 hours ago keep in mind.... when the pointer is pointing to 1&6 that doesnt mean you are up on #1. you may be up on #6.. when you are up on #1, the #2 exhaust rocker will be rocked, (valve open).. Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586059 Share on other sites More sharing options...
RedMackWheeler Posted 4 hours ago Author Share Posted 4 hours ago Correct. I had been watching the rockers as someone else rotated the engine to make sure #1 was 30°after TC of compression stroke. I didn't know about watching #2 trick. I was also looking at #6, the companion cylinder, close off the exhaust valves and open the intake (just after exhaust stroke) as the engine was coming up on the timing mark. Im pretty sure I was adjusting at the right time/stroke. Let me know if I'm wrong though. Thanks. Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586060 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago Sounds like you were paying attention. Good deal 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586061 Share on other sites More sharing options...
RedMackWheeler Posted 4 hours ago Author Share Posted 4 hours ago I tried to do my research. But those spring loaded push rods weren't in the book. Do you think it damaged things to run the engine like that for 3-5 minutes? Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586062 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago no damage. you have steel roller lifters. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586064 Share on other sites More sharing options...
RedMackWheeler Posted 4 hours ago Author Share Posted 4 hours ago Thanks for all your help. Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586065 Share on other sites More sharing options...
Joey Mack Posted 4 hours ago Share Posted 4 hours ago 🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/76176-e7-etech-overhead-with-spring-loaded-push-rods/#findComment-586066 Share on other sites More sharing options...
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