User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 12-14-2021, 11:24 PM #1
Pyral's Avatar
Pyral Pyral is offline
Member
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
Pyral Pyral is offline
Member
Pyral's Avatar
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
Rust on 3rz-fe cam shaft

There is rust on the cam shaft lobes. I barely know how well this engine was treated, but the last owner wasn't super ideal to say the least.

There is rust on the cam lobes, the timing chain tensioner seems pretty far out too. The engine is 23 years old with 177k. The dark spots in the photo aren't oil, they are corrosion.










Link to album
__________________
1998 4runner 2.7 manual

Last edited by Pyral; 05-16-2023 at 02:56 AM. Reason: Maintaining photos (link rot)
Pyral is offline   Reply With QuoteReply With Quote
Old 12-14-2021, 11:43 PM #2
JZiggy's Avatar
JZiggy JZiggy is offline
Senior Member
 
Join Date: Oct 2016
Location: Atlanta
Posts: 2,255
JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future
JZiggy JZiggy is offline
Senior Member
JZiggy's Avatar
 
Join Date: Oct 2016
Location: Atlanta
Posts: 2,255
JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future JZiggy has a brilliant future
The dark stuff is just varnish. It actually doesn’t look bad — no sludge or deposits. Just some stain from slightly over long oil changes. A few fills of full synth (diesel spec is best) may reduce it over time.

Try to count the exposed teeth on the tensioner. It looks about how mine does but it’s hard to tell.
JZiggy is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 12:01 AM #3
Devbot's Avatar
Devbot Devbot is offline
Senior Member
 
Join Date: Apr 2020
Location: Monroe, WA
Posts: 2,188
Real Name: Devan
Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold
Devbot Devbot is offline
Senior Member
Devbot's Avatar
 
Join Date: Apr 2020
Location: Monroe, WA
Posts: 2,188
Real Name: Devan
Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold
Are you talking about that orange coloration? You realize that's just varnish right? Pull the covers off any valvetrain of similar age/mileage and it'll look very close to the same, especially if they use conventional oil. The only way they could possibly rust is if water entered the valvetrain and the engine sat until it fully dried out, in which case you would've notice a lot more problems before now
The spark plug wells aren't super uncommon; just how they seal up. Moisture gets in one way or another but can't get out
Edit: screeenshot of how my 5VZ cams look to give an idea. PO used lots of dino fluid
Attached Images
Rust on 3rz-fe cam shaft-screenshot_20211214-200206_snapchat-jpg 
__________________
Y2K Highlander Millennium Silver 3.4L auto @ 320k and climbing
Toytecs + 5100s / 7.5 wrap + OME spacers + Tokicos / JBA UCAs / Anonymous Fab. LBJs / Total Chaos Gussets / EimKeith PCK + LCAR / Extended Bump Stops; Brake Lines; Rear Diff Breather / True North Fab. Hybrid Bumper / CBI Hybrid Bumper + Tire Carrier / 4xInnovations Hybrid Sliders / Opt Offroad Trailing Arms / Lil Skip Gas Skid / BudBuilt Front Skid / ARB Rear Locker

Last edited by Devbot; 12-15-2021 at 12:06 AM.
Devbot is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 02:59 AM #4
Pyral's Avatar
Pyral Pyral is offline
Member
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
Pyral Pyral is offline
Member
Pyral's Avatar
 
Join Date: Jun 2021
Location: Eastern WA
Posts: 595
Real Name: N/A
Pyral has a spectacular aura about Pyral has a spectacular aura about
I've owned it for 12k miles and I've probably done 3 or 4 oil changes, 2 with synthetic oil. I think an seafoam oil treatment might be in order. I think your right about it being varnish, but there is definitely corrosion on the inside of the valve cover.

The sparkplugs had a good seal, really struggled to pull them out the first time, now they come out easily. I think the coils were replaced at some point, they aren't numbered annoyingly and they don't have a date on them like the stock ones do.

For some reason my denso spark plugs had this neoprene ring around them, IDK if its from the after market coils, but this neoprene stuff was falling apart and its resting on the lip where the spark plug usually sits. I'm worried I might get shreds of this neoprene substance in my cylinder. Should I worry?

Oh and I counted the teeth on the timing chain tensioner. I think there was 10 or about that. Anyone know how many teeth there are total?

Answered my question: there are approximately 20 teeth on the tensioner total. So I'm at half life. Had to pause and count teeth on this video.
__________________
1998 4runner 2.7 manual

Last edited by Pyral; 12-15-2021 at 03:17 AM.
Pyral is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 11:14 AM #5
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute Bad Luck has a reputation beyond repute
Quote:
Originally Posted by Pyral View Post
I've owned it for 12k miles and I've probably done 3 or 4 oil changes, 2 with synthetic oil. I think an seafoam oil treatment might be in order. I think your right about it being varnish, but there is definitely corrosion on the inside of the valve cover.

The sparkplugs had a good seal, really struggled to pull them out the first time, now they come out easily. I think the coils were replaced at some point, they aren't numbered annoyingly and they don't have a date on them like the stock ones do.

For some reason my denso spark plugs had this neoprene ring around them, IDK if its from the after market coils, but this neoprene stuff was falling apart and its resting on the lip where the spark plug usually sits. I'm worried I might get shreds of this neoprene substance in my cylinder. Should I worry?

Oh and I counted the teeth on the timing chain tensioner. I think there was 10 or about that. Anyone know how many teeth there are total?

Answered my question: there are approximately 20 teeth on the tensioner total. So I'm at half life. Had to pause and count teeth on this video.
It's all varnish. There is no corrosion on the engine internals or the inside of the valve cover.

I have a different engine but none of my spark plug coils are numbered or marked from the factory.

The neoprene stuff you are talking about isn't an issue. If you really want to you can vacuum it out with a shop vac with a smaller diameter rubber hose (heater core hose works good if it will fit) duck taped to the shop vac hose to reduce it down.
__________________
2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
Bad Luck is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 11:54 AM #6
Devbot's Avatar
Devbot Devbot is offline
Senior Member
 
Join Date: Apr 2020
Location: Monroe, WA
Posts: 2,188
Real Name: Devan
Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold
Devbot Devbot is offline
Senior Member
Devbot's Avatar
 
Join Date: Apr 2020
Location: Monroe, WA
Posts: 2,188
Real Name: Devan
Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold Devbot is a splendid one to behold
Quote:
Originally Posted by Pyral View Post
I've owned it for 12k miles and I've probably done 3 or 4 oil changes, 2 with synthetic oil. I think an seafoam oil treatment might be in order. I think your right about it being varnish, but there is definitely corrosion on the inside of the valve cover.

The sparkplugs had a good seal, really struggled to pull them out the first time, now they come out easily. I think the coils were replaced at some point, they aren't numbered annoyingly and they don't have a date on them like the stock ones do.

For some reason my denso spark plugs had this neoprene ring around them, IDK if its from the after market coils, but this neoprene stuff was falling apart and its resting on the lip where the spark plug usually sits. I'm worried I might get shreds of this neoprene substance in my cylinder. Should I worry?

Oh and I counted the teeth on the timing chain tensioner. I think there was 10 or about that. Anyone know how many teeth there are total?

Answered my question: there are approximately 20 teeth on the tensioner total. So I'm at half life. Had to pause and count teeth on this video.
If you're talking about light pitting here and there that isn't corrosion nor uncommon with older vehicles that have potentially been neglected at one point. Very common with age regardless. I don't see how steel would corrode in the presence of oil unless you're using straight crude
__________________
Y2K Highlander Millennium Silver 3.4L auto @ 320k and climbing
Toytecs + 5100s / 7.5 wrap + OME spacers + Tokicos / JBA UCAs / Anonymous Fab. LBJs / Total Chaos Gussets / EimKeith PCK + LCAR / Extended Bump Stops; Brake Lines; Rear Diff Breather / True North Fab. Hybrid Bumper / CBI Hybrid Bumper + Tire Carrier / 4xInnovations Hybrid Sliders / Opt Offroad Trailing Arms / Lil Skip Gas Skid / BudBuilt Front Skid / ARB Rear Locker
Devbot is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 11:59 AM #7
brillo_76's Avatar
brillo_76 brillo_76 is offline
Elite Member
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
brillo_76 brillo_76 is offline
Elite Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 6,012
Real Name: Jon
brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute brillo_76 has a reputation beyond repute
The steel internals only rust if an engine sits a long time without running or being spun to coat the parts with oil.

Sent from my SM-A505U using Tapatalk
__________________
7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
brillo_76 is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 03:51 PM #8
phattyduck phattyduck is offline
Elite Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,380
phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute
phattyduck phattyduck is offline
Elite Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,380
phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute
Looks like a great engine. The only (incredibly minor) corrosion I saw was on the inside of the spark plug tube. Still not an issue.

Do the next couple oil changes with Rotella T6 and your engine can look like this inside (250k miles of dino oil, then 20k of T6):



You can see the varnish is still getting cleaned up, but much of the engine is quite nice already.

-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
phattyduck is offline   Reply With QuoteReply With Quote
Old 12-15-2021, 04:16 PM #9
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 823
cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 823
cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold cl4Rk is a splendid one to behold
Quote:
Originally Posted by phattyduck View Post
Looks like a great engine. The only (incredibly minor) corrosion I saw was on the inside of the spark plug tube. Still not an issue.

Do the next couple oil changes with Rotella T6 and your engine can look like this inside (250k miles of dino oil, then 20k of T6):



You can see the varnish is still getting cleaned up, but much of the engine is quite nice already.

-Charlie
Looks great. I'm a newbie, please tell me more
- What weight are you using with Rotella T6?
- Synth?
- All 5.5 quarts of Rotella? Or a blend?
- Any side effects or anything to watch out for?
- cat converter damage over time?
- temporary cleaning tactic? or run Rotella forever?

Thanks
__________________
2000 SR-5 V6 4x4 Auto
"Ol' Ruby" - build thread
@Y2K_4X4

Last edited by cl4Rk; 12-15-2021 at 05:00 PM.
cl4Rk is offline   Reply With QuoteReply With Quote
Old 12-16-2021, 03:39 PM #10
TravThePro's Avatar
TravThePro TravThePro is offline
Member
 
Join Date: Jul 2017
Location: SLC Utah
Posts: 183
Real Name: Travis
TravThePro is on a distinguished road
TravThePro TravThePro is offline
Member
TravThePro's Avatar
 
Join Date: Jul 2017
Location: SLC Utah
Posts: 183
Real Name: Travis
TravThePro is on a distinguished road
Quote:
Originally Posted by cl4Rk View Post
Looks great. I'm a newbie, please tell me more
- What weight are you using with Rotella T6?
- Synth?
- All 5.5 quarts of Rotella? Or a blend?
- Any side effects or anything to watch out for?
- cat converter damage over time?
- temporary cleaning tactic? or run Rotella forever?

Thanks
I would run the 5-40 for the Rotella T6 and all of the Rotella T6 is synthetic. Just use the T6 and don't bother blending it with anything else. If you already have oil leaks then they can become worse with the detergents eating away all of the buildup blocking them off. The only way you will damage your catalytic converter with oil is if your engine burns a ton of oil (worn valve seals or seized/worn piston oil rings). Using T6 and other high detergent oils have actually helped with making this problem less significant in the past for a few older/neglected engines we have used it on. I know people who run it once every 2-3 oil changes and people who refuse to use anything but the Rotella T in their engines. Seeing the additives in T6 I would say that it is completely safe to run it long-term in our engines. The most important thing with running a high detergent oil after potential long-term abuse on an engine (you have no idea how the PO took care of it) is to use a really high-quality oil filter.
__________________
1996 T4R
TravThePro is offline   Reply With QuoteReply With Quote
Old 12-16-2021, 05:25 PM #11
phattyduck phattyduck is offline
Elite Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,380
phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute
phattyduck phattyduck is offline
Elite Member
 
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,380
phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute phattyduck has a reputation beyond repute
^^^ That about covers it.

I run it fully time on my older engines (ones that originally called for 5w30 or 10w30), 5w40 weight. Whether you want to do that is up to you. There is some theoretical chance of cat damage, but I haven't seen it yet (and pass CA smog every two years).

-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
phattyduck is offline   Reply With QuoteReply With Quote
Reply

Tags
cam , engine , lobes , rust , shaft

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I use rust reform on a small body dent with rust? Nooga_Rock Maintenance/Detailing 3 05-18-2020 02:58 AM
Propeller Shaft = Dealer Shaft tahoekarl 5th gen T4Rs 31 01-24-2020 02:51 PM
Any rust issues on Gen 5? Beach rust prevention. Fomer_FJ_owner805 5th gen T4Rs 8 09-19-2016 01:08 PM
Drive shaft/Prop shaft question (Picture Incl.) rinkman07 4th Gen T4Rs 4 03-31-2014 09:49 PM
thump ,clunk noise in my drive shaft. where is grease fitting for drive shaft? taeytaey 4th Gen T4Rs 2 09-12-2012 10:30 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 02:37 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020