1993 Yukon crate motor hydraulic roller lifter cleaning and adjustment journey - (Solved)
- Thread starter scott2093
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Just reread this. To overcome the phone light limitation, if you have a small flashlight around
use *that* light source while taking a photo with your phone. In addition, oftentimes the
autofocus will tend to follow the strongest light source, and you can end up steering the
camera to focus where you want it instead of the camera just trying to guess what's best.
It will take a minute or two to experiment, but the resulting photos may end up super sharp
and give us remote folks a definitive look-see.
Give that a try...
EDIT: Like the idea of the endoscope. Others in this forum have shared some sharp photos
with that method.
Last edited:
Not to worry about that quarter cup of gas. But just to avoid any more discharge, if you haven't already disconnected the ground to
the battery then go ahead and do so. (The sun may have caused the quarter cup of discharge...but you really want to avoid one or
more Key On scenarios where the 2-second prime is generated -- a lot of fuel can be delivered when there's no backpressure.)
still not great with my phone.... The One Plus I have is notorious for poor quality pictures and videos..... My son used his i phone for this one.... even so.... focus is a bit off...
hopefully scope will be nice... I have got to get moving...lol
Still haven't even reassembled the first lifter..
Praying to God when it gets later and my eyes grow dim, those little springs and balls make it back home safe
Attachments
That's the best photo yet. I'm seeing a little scuffing in the very center, with the 2 polished
stripes on either side that I would normally expect on a healthy roller cam, followed by the
varnish on the outer edges. No doubt the endoscope/borescope will be this good or possibly
better sharpness.
When you get to the lifter associated with this sound I'd like you to look for any extraneous rubbing
on the lifter body. Here's a photo of where the needle bearings inside a roller lifter failed, and the
problem was first identified by a 'squeaking' sound:
You must be registered for see images attach
(credit: enginelabs.com LINK TO ROLLER LIFTER ARTICLE)
To explain the picture above, when the needle bearings failed, the roller wheel receded
back into the lifter body, which then allowed the lifter body to rub against the edge of the
cam lobe instead. If you follow the link and read the article it describes how the resulting
metal particles went through the engine and caused a lot of collateral damage. (!)
Again, when you get to that 'feedback sounding' area, be on the lookout for anything
unusual like this.
FWIW --
Last edited:
I believe that's the same location as pictured in post #40.
It seems that's just above timing cover. Poor pic resolution, but me thinks that's a male tapered threaded pipe plug with an internal hex; Not a bolt.
No, that's Not a blind or dead hole. And, there's full oil pressure behind that 1/8" threaded tapered pipe plug. I do KNOW many blocks have an OE 1/8" tapered pipe thread hole in exactly that position.
FWIW, there are another three of those on Rear face of block (you cannot see or access them when bellhousing bolted to motor). If oil is seeping from any of those, suggest remove plug and clean threads of both plug & block; then reinstall & seal plug with teflon pipe dope or paste. If, IF it were to come loose & fall away; you'll instantly lose all engine oil pressure (zero psi).
Of course, any oil seeping from that pictured plug does also contaminate any Serp/V-belt And rubber that's in your harmonic damper; hastening their failures. Suggest fix that leak ASAP.
Last edited:
BBC not like sbc ... instead of vent Holes, Big Blocks have a series of about Four long Slots.
AFAIK, valley pan/tray not OE on either sbc or BBC; aftermarket supplies em for both.
You must be elbows deep in the project, good! When you come up for air, I would
certainly add the 'wild shooter(s)' to the list of lifters that you pay extra attention to.
I've read across the interwebs, and like you said earlier there is a vortex of misinformation
surrounding this topic out there. :0) When you discover a lifter that's shooting 20x the
oil that it's sisters and brothers are metering, one theory is that the spring-loaded ball is
no longer seating properly. It's possible? To me, though, if that lifter had been assembled
with a missing metering disc, then I can absolutely visualize how the pressurized oil in the
galley feeding the lifter would go immediately up the lifter, through the pushrod, and geyser
out of the rocker arm spit hole.
IF the oil metering disc is not missing, then a careful look at the spring-loaded ball bearing
and associated seat would be my top priority. Sure would be cool if you could bring that
lifter back into line, oil-metering-wise. It's gotta be causing a drop in overall oil pressure
at a hot idle. (?)
Fingers crossed you are enjoying success.
Cheers --
Just up to my knuckles... I need a visit from Madge and her Palmolive...
Believe it or not I still have number 8 valves to clean and...have all the driver's bank left... number 4 exhaust fought me pretty good trying to get it out but the brake cleaner worked eventually..
Everything looks good so far...That scope really isn't too good at all ...enough to see enough... It's got a weird sweet spot and you have to take pictures of the screen it has because it's just a monitor. but the sweet spot is pretty good...Just can't seem to get it to focus on the lobes apart from being able to tell they look good enough... I can stick my finger down and feel them too...with my nail...
And I've been going at it pretty good. A few breaks and trip into town but, other than that and dinner..man..
I think the fear of making sure everything stays with it's specific lifter slows things down... Just about every video out there shows guys just throwing everything in a bucket and coming back the next day and wiping everything down.. mixing all the internal parts....
Cleaning right away is pretty tough. varnish and carbon everywhere inside..Thanks for the lacquer thinner tip. Alcohol was ok. MEK was ok but it eats through gloves in a couple of minutes...Got tired of using it...
Surely there are specific tools to speed things up but I'm making do.. slowly...
It's incredible these things even work and for as long and hard as they do. Mind blowing to me... Too cool...
Yeah it was number 1 intake that's the rainbird..
Speaking of the metering discs, these have raised ridges on both sides but one side is the inverse of the other. I took notes of the direction but I'm seeing them every which way so far. The only thing I failed to pay attention to before I figured it didn't matter , is that perhaps one direction is for the intake and the other is for exhaust. I'll need to really check.. Pictures show what I'm talking about....
Definitely glad I'm doing this but didn't realize how tedious it would be... But tomorrow will be great.. It was choppy today with a slow start. I've figured out what works best with what I have here to work with.
Everything is looking really good. Insides are pretty much back to close to new and working great. It's neat to see the rods push the plunger. Now all the talk of watching the plunger when setting zero lash makes sense seeing as how they all can move...exactly the same
Attachments
Last edited:
