timing chain installation
#1
Member
CRAFTSMAN
Thread Starter
Join Date: Jan 2005
Posts: 50
can someone tell me on this timing set we want to install about the crankshaft gear that has many slots for the key way. One of the slots has a o on it, but two teeth to the left the sprocket tooth has a o on it. We do not want to degree the cam, just want to go with a standard installation of a timing chain. Want to know which o to go with. Thanks for any advice
#2
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
You should have 3 different marking on the lower sproket one should be a 0 the other should be a triangle and the other should be a sq. and the paper/installional should say 0 is for straight up and the other should say 4 degrees advanced or 4 degrees retarded. If you are going to degree the cam in you would be better off to open up the cam pin/dowel hole to 7/16" and use an excentic bushings and then you can put it dead on to what you want. Most cams today are ground within 1 degree of dead on useing the 0, because they have good equipment grinding the cams. I personally don't use those types of chains. I use the chains with the excentric bushing called a hex adjust, that way you can install the cam anywhere from 8 degrees retarded to 8 degrees advanced
JMO
Zip.
JMO
Zip.
#3
Senior Member
RACING JUNKIE
Join Date: Jun 2003
Location: Hobbs, NM
Posts: 842
Your taking a big chance by just installing the cam and timing chain on so called 0 advance without degreeing your cam. I just installed a brand new Reher Morrison cam that was ground on a 110 center line to be set up on a 2 degree advance 108 center line. When we degree the cam I set the timing chain up on 0 advance, but there the cam was at 103 center line. I had to put a 5 degree retard button to get the timing at 108. If I just installed the timing chain at 0, I would have had 5 degrees to much advance. Which might have gotten me in a bind with valve clearance not counting the fact it wouldn't have ran for sh#t. Always degree your cam when installing a new cam or timing chain. IMO



