cam install question....????
Thread Starter
Safety Car
Joined: Aug 2006
Posts: 4,102
Likes: 1
From: Forsyth Illinois
cam install question....????
Been here,and done this before,but Cloyes was closed for the holiday,and no instructions w/the timing chain as to the dots to be aligned at the top/bottom of the cam sprocket,or the way that I did it,and the crank at the top,and the cam sprocket at the top.I went thru the crank rotation,and the exhaust valve wasn't moving coming up on TDC,so this is the compression stroke on #1,then rorate in 90 degree turns,and run thru the firing order.I'm good,right?This is a customer's car,and no room for error,so I started second guessing myself.
Thanks.....and Happy Memorial Day.....
Thanks.....and Happy Memorial Day.....
Instructor
Joined: Jul 2008
Posts: 100
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From: Long Jetty NSW
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
No offense, but isn't this a basic engine building question that we learned i the 3rd grade? hahaha, just kidding. Did you want to see it written in words, to see you know what to do? How long have you been doing this? Put your head down, go do what you know how to do and the job'll be done for a cold beverage at closing time. Trust your instincts, they remember how to do it!!!!
Just a little fun before the holiday, have good one!!
Just a little fun before the holiday, have good one!!
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Crank sprocket dot at 12, cam at 6. Degree wheel on the crank, dial indicator on #1, match the specs at TDC to the cam card. Make sure it's 4* advanced unless you have a custom grind cam with a different built in advance.
And Tank is right. JUST DO IT
And Tank is right. JUST DO IT
Melting Slicks
Joined: Oct 2002
Posts: 2,317
Likes: 111
From: St Louis MO
With the #1 piston at TDC, #6 is also at TDC. To determine whether #1 or #6 is in the firing position, look at the #3 intake valve - if it is open, #1 is in firing position; if it's not, #6 is in firing.
Why? Because of the firing order, 18436572... With #1 firing at TDC, #8 is moving up on compression; #4 is at BDC with its intake valve nearly closed; #3 is half way down on the intake stroke with the intake valve virtually full open.
Why? Because of the firing order, 18436572... With #1 firing at TDC, #8 is moving up on compression; #4 is at BDC with its intake valve nearly closed; #3 is half way down on the intake stroke with the intake valve virtually full open.
Thread Starter
Safety Car
Joined: Aug 2006
Posts: 4,102
Likes: 1
From: Forsyth Illinois
With the #1 piston at TDC, #6 is also at TDC. To determine whether #1 or #6 is in the firing position, look at the #3 intake valve - if it is open, #1 is in firing position; if it's not, #6 is in firing.
Why? Because of the firing order, 18436572... With #1 firing at TDC, #8 is moving up on compression; #4 is at BDC with its intake valve nearly closed; #3 is half way down on the intake stroke with the intake valve virtually full open.
Why? Because of the firing order, 18436572... With #1 firing at TDC, #8 is moving up on compression; #4 is at BDC with its intake valve nearly closed; #3 is half way down on the intake stroke with the intake valve virtually full open.
Thanks for the replies,and Happy Memorial Day!
