Awesome find! I always wondered why my bank 1 valvetrain was slightly noisier than bank 2, even with the lifter bucket clearances within spec. It would be super cool to reassemble the VVEL system, take the according measurements and confirm the theory! In regard to acquiring the 5.5° VVEL (actuator to control cam) inclination, how did you go about finding that exact measurement? With Piston 1 at TDC, and both control cams locked to the left stopper, I measured 1.633” (B2) and roughly 1.585” on (B1). I’m sure every engine has slight variances; curious how you went about landing on that 1.585” measurement. My engine only has about 37k miles and seems to be in great shape. Upgrading to 2013+ springs/retainers.
Very good stuff dude!! Quick question motor motor has been built for a year now. I had amazing oil pressure 15-17 ibs at warm up idle Now im constidemtly at 12-10 ibs after oil warm Should look into gallary gaskets already??
Sounds like it, that's really the only thing that can make it creep down....I say that...but a potentially failing or fractured oil pump gear can do similar stuff
I know right!!!...I'm finally the guy that found it...but, it will go unnoticed.lol🙃....honestly, I've never had catastrophic mechanical failure...just extremely audible valvetrains...I always assumed the general looseness of the control cam rockers with plastic valve cover+ mileage. For all my big boy motor builds (I have tons of cores) I had been selecting 30k mile or less valvetrains and heads; that basically eliminated my issues as a builder..but now we know why and what the solution is...I've been chasing this dragon for years.
@@sethjoyner391 that of which i completely agree. So, another thought is, why not just tighten the top one? Or would that just throw off the lift alignment per cylinder?
@@sethjoyner391 would be interested hearing you and the race engineer's take on if this flaw had any potential of compromise to the point of engine failure.
@Mizagyu so, the important part is that the pin stays in its all the way up position, then the bottom set screw meets it as far as height..so, the other bizarre thing is that only the bottom set screw backs out...I've never seen a loose top screw or even under torqued for that matter if that helps
Locktite is always the answer. Lol. Super cool to see that part and the solution to the rattling noise! Thanks for sharing 😎
That^^^ and the other intentionally engineered obsolescence of gallery plate hardware....loctite em all gentleman 👌
Thank uuu😊
Pretty interesting discovery Seth! So I guess the only purpose of ester oil is to hide that flaw lmao.
Exactly^^^ they could definitely never reveal this issue
Hi Seth, which torque you put to those bolts?
Awesome find! I always wondered why my bank 1 valvetrain was slightly noisier than bank 2, even with the lifter bucket clearances within spec. It would be super cool to reassemble the VVEL system, take the according measurements and confirm the theory!
In regard to acquiring the 5.5° VVEL (actuator to control cam) inclination, how did you go about finding that exact measurement?
With Piston 1 at TDC, and both control cams locked to the left stopper, I measured 1.633” (B2) and roughly 1.585” on (B1). I’m sure every engine has slight variances; curious how you went about landing on that 1.585” measurement.
My engine only has about 37k miles and seems to be in great shape. Upgrading to 2013+ springs/retainers.
Very good stuff dude!!
Quick question motor motor has been built for a year now. I had amazing oil pressure 15-17 ibs at warm up idle
Now im constidemtly at 12-10 ibs after oil warm
Should look into gallary gaskets already??
Sounds like it, that's really the only thing that can make it creep down....I say that...but a potentially failing or fractured oil pump gear can do similar stuff
@sethjoyner391 your the man dude!!!
Time to park it and take it a part again..
It's like Legos at this point 😅🤣
Wow people have been guessing what causes that noise for years. Can this cause a catastrophic failure?
I know right!!!...I'm finally the guy that found it...but, it will go unnoticed.lol🙃....honestly, I've never had catastrophic mechanical failure...just extremely audible valvetrains...I always assumed the general looseness of the control cam rockers with plastic valve cover+ mileage. For all my big boy motor builds (I have tons of cores) I had been selecting 30k mile or less valvetrains and heads; that basically eliminated my issues as a builder..but now we know why and what the solution is...I've been chasing this dragon for years.
So, just out of curiosity, why did they even bother with a top screw at all?
I work with a race engineer; he thought the assembly "was hilarious and silly" 😂
@@sethjoyner391 that of which i completely agree. So, another thought is, why not just tighten the top one? Or would that just throw off the lift alignment per cylinder?
@@sethjoyner391 would be interested hearing you and the race engineer's take on if this flaw had any potential of compromise to the point of engine failure.
@Mizagyu so, the important part is that the pin stays in its all the way up position, then the bottom set screw meets it as far as height..so, the other bizarre thing is that only the bottom set screw backs out...I've never seen a loose top screw or even under torqued for that matter if that helps
@NengHuynh I actually know the guy pretty well😊...and we've both gone deep into different vq engine issues...that might be an interesting video. 🤔