Cam (bearing) advise needed..... JY 5.3L
03-21-2013, 07:38 PM
#1
TECH Regular
Thread Starter
iTrader: (5)
Join Date: Sep 2007
Posts: 408
Likes: 0
Received 0 Likes
on
0 Posts
Cam (bearing) advise needed..... JY 5.3L SOOOOOO I tore my motor apart tonight and was planning on reassembling, but ran into this.
Mind you this is a 91k miles JY 5.3 that I am boosting and am looking for input.
The front bearing has a little copper showing, BUT the cam spun really good, truck had great oil pressure before it came out and ran really well. I am not looking to sink a bunch of machine work into this thing.
My dad is helping me on the build and is old school and says it needs to come apart. I don't want to spend a bunch of money on it, rather buy another one to be honest, but they have become hard to find with lower miles. The rod bearings look great.
I have a custom Martin spec'd Tick Performance cam to go in.
ADVISE????
Here are the pics:
First bearing. Worst of bunch and only one I can really snap a pic of.
Cam journal on first.
Rest of the journals:
Mind you this is a 91k miles JY 5.3 that I am boosting and am looking for input.
The front bearing has a little copper showing, BUT the cam spun really good, truck had great oil pressure before it came out and ran really well. I am not looking to sink a bunch of machine work into this thing.
My dad is helping me on the build and is old school and says it needs to come apart. I don't want to spend a bunch of money on it, rather buy another one to be honest, but they have become hard to find with lower miles. The rod bearings look great.
I have a custom Martin spec'd Tick Performance cam to go in.
ADVISE????
Here are the pics:
First bearing. Worst of bunch and only one I can really snap a pic of.
Cam journal on first.
Rest of the journals:
Trending Topics
03-24-2013, 02:12 AM
#9
12 Second Club
iTrader: (6)
Join Date: Jun 2004
Location: Ft. Irwin, California (But Virginia is home)
Posts: 1,501
Likes: 0
Received 7 Likes
on
1 Post
I think you're fine. If people on this forum saw my #1 cam bearing they'd probably $hit. When I did a H/C swap in 2008 I realized the (now defunct) TRT Turbo who installed my previous boost cam tore the hell out of the bearing. It was bad. I "smoothed" it with steel wool, and it still had a groove in it.
Short version, 40K later (to include 170mph cruising on the German AutioBahn).... car's still running strong and has good oil pressure.
Short version, 40K later (to include 170mph cruising on the German AutioBahn).... car's still running strong and has good oil pressure.
03-25-2013, 07:48 PM
#12
TECH Fanatic
iTrader: (36)
Join Date: Oct 2005
Location: cedar bluff,alabama
Posts: 1,135
Likes: 0
Received 0 Likes
on
0 Posts
Mine looked the same on my 150000mi 5.3 I changed them and then the machine shop had to hone the **** outa the rear to get proper clearance...then guess how the bearing looked?
