Timing chain RE & RE
Thread Starter
Instructor
Joined: May 2002
Posts: 144
Likes: 0
From: Ajax Ontario
Timing chain RE & RE
Just wondering how hard/long to do a timing chain in my garage with basic tools etc. My Chiltons says I will have to drop the pan but one of our tech says I should only have to loosen the front of it and push it down enough to get the chain cover off. I would like this job to be as quick and painless as possible.
Wedge. :rolleyes: :confused:
P.S. its an 84 vette.
[Modified by WEDGE, 8:11 PM 10/4/2002]
Wedge. :rolleyes: :confused:
P.S. its an 84 vette.
[Modified by WEDGE, 8:11 PM 10/4/2002]
Melting Slicks
Joined: Aug 2000
Posts: 2,009
Likes: 1
From: Springfield MO
Re: Timing chain RE & RE (WEDGE)
I'd say 12-14 hours with appopriate tools and adequate beverage breaks :cheers: I just loosened the front of my pan and massaged the timing cover a bit and she slid rigt in place with no leaks. Preventative mainentance or broken parts??
Melting Slicks
Joined: Nov 2000
Posts: 3,388
Likes: 1
From: X
Re: Timing chain RE & RE (WEDGE)
It shouldn't take you long to do. And dropping the pan really isn't that hard either. I'll bet the gasket leaks a little anyway. You may also want to look into replacing the waterpump while you are at it. Just take your time and you will do ..OK....If you need any diagrams from the helms book, let me know.
Drifting
Joined: Sep 2001
Posts: 1,875
Likes: 27
From: Long Beach NY
Re: Timing chain RE & RE (WEDGE)
Just curious, do the timing chains on L98 engines have a nylon gear on the cam? Does any body know the condition of these after say 100k, 125k, 150k miles? Years ago chains used to go on chevy engines at about 90k but that was with the nylon gear. The gears would actually disintegrate, with teeth falling off, causing the chain to jump. From what I have read on the Forum they now seem to last much longer and get replaced as a precaution rather than necessity. Is this true???
Barrier
Barrier
Thread Starter
Instructor
Joined: May 2002
Posts: 144
Likes: 0
From: Ajax Ontario
Re: Timing chain RE & RE (JonM)
Yep I got another water pump to put on while I was in there along with a new chain cover since the original one now has a big slice:mad in it from my balancer(outer ring walked backwards off of the rubber sleeve:eek: )self destructing.
Wedge. :cheers:
Wedge. :cheers:
Burning Brakes
Joined: Nov 2000
Posts: 1,012
Likes: 1
From: Bowie MD
Re: Timing chain RE & RE (WEDGE)
Looking at my 90 chain and gears on garage floor, there is NO nylon gear, just metal. at 108k miles it doesn't look bad. It could be stretched a little, but not much. On my new rebuild project I am going with a cloyes 9-3145, and clean new GM timing cover, as the old one looks nasty. Because the water pumpclearance is so slim. I can not go with the nice edelbrok aluminum ones. Glad I replaced the Damper already. Seems alot of them are going these days.
Pro
Joined: Dec 2000
Posts: 700
Likes: 20
From: Derby Kansas
Re: Timing chain RE & RE (WEDGE)
I replaced my 85's a couple of years ago. About the only "special" tools I needed was a balancer puller, small gear puller, and a long #45 (I think) torx bit to get the lower torx screw for the A/C. I'd start on it first thing on a Saturday in case you run into any problems (tools or otherwise) you can wrap it up on Sunday if needed. I didn't pull my pan either, I just loosened a few pan bolts on each side. It took a little "persuading" to get the lower part of the timing chain cover with a new seal in though...but it WAS do-able.
Not sure when GM went to steel teeth on the cam gear, but my 85 had nylon, so it's a safe bet your 84 has nylon also. I changed mine at 150,000 miles. I had cracks on 6 of my teeth. The worst was almost cracked all the way through with less than 1/8" of material holding it on. The chain was also VERY sloppy.
My balancer slipped and I needed to replace it. I figured as long as I was down there with stuff torn apart, it might be a good idea to change the chain "just in case"....Im glad I did.
[Modified by Ron78Z&85Vette, 1:38 AM 10/7/2002]
Not sure when GM went to steel teeth on the cam gear, but my 85 had nylon, so it's a safe bet your 84 has nylon also. I changed mine at 150,000 miles. I had cracks on 6 of my teeth. The worst was almost cracked all the way through with less than 1/8" of material holding it on. The chain was also VERY sloppy.
My balancer slipped and I needed to replace it. I figured as long as I was down there with stuff torn apart, it might be a good idea to change the chain "just in case"....Im glad I did.
[Modified by Ron78Z&85Vette, 1:38 AM 10/7/2002]
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer