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camshaft install...

  • Thread starter Thread starter 86lxhatch
  • Start date Start date Apr 3, 2012

86lxhatch

Active Member
Nov 14, 2011
113
0
26
East Tennessee
Apr 3, 2012
#1
  • Apr 3, 2012
  • #1
So I installed my new cam in the 306, but noticed I can move the cam back and forth a little inside the block with the cam mounting block plate on and bolted. Is this normal?
 

86lxhatch

Active Member
Nov 14, 2011
113
0
26
East Tennessee
Apr 3, 2012
#2
  • Apr 3, 2012
  • #2
Oh yeah, and I have not installed the timing chain yet, I just put on the cam sprocket and fingertightened the cam sprocket bolt...
 

86lxhatch

Active Member
Nov 14, 2011
113
0
26
East Tennessee
Apr 4, 2012
#3
  • Apr 4, 2012
  • #3
anyone?
 

NIKwoaC

中國製造
15 Year Member
Oct 31, 2006
5,525
943
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Chengdu Province
Apr 5, 2012
#4
  • Apr 5, 2012
  • #4
Yes, you should have some amount of measurable camshaft end play. Between .005" and .010" is nominal.
 

1987stangman

Member
Jul 12, 2006
684
24
19
Apr 5, 2012
#5
  • Apr 5, 2012
  • #5
Use a dial indicator
 

86lxhatch

Active Member
Nov 14, 2011
113
0
26
East Tennessee
Apr 7, 2012
#6
  • Apr 7, 2012
  • #6
okay, I got the cam in, and everything is good. Should I advance, retard, or run the cam straight up? I need some info. on what happens when you change the cam timing. I have three options with the crank sprocket I am using. They are 5 deg. adv., ret., or straight...I have a stock bottom end with b cam, forged speedpro 9.5:1 pistons with reliefs, and am planning on going with a set of RHS aluminum heads with 58 or 60cc chambers.
 

NIKwoaC

中國製造
15 Year Member
Oct 31, 2006
5,525
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Chengdu Province
Apr 8, 2012
#7
  • Apr 8, 2012
  • #7
Go to Comp's website and browse around their tech area. It is set up kind of like a forum and there is a TON of good cam info on there, including the effects of advancing and retarding the cam timing. I would recommend you check that out.
 

NIKwoaC

中國製造
15 Year Member
Oct 31, 2006
5,525
943
214
Chengdu Province
Apr 8, 2012
#8
  • Apr 8, 2012
  • #8
By the way, pistons do not determine the compression ratio by themselves. Those 58cc heads will drive up your compression even higher.
 

86lxhatch

Active Member
Nov 14, 2011
113
0
26
East Tennessee
Apr 8, 2012
#9
  • Apr 8, 2012
  • #9
Thanks, I'll check it out
 

NIKwoaC

中國製造
15 Year Member
Oct 31, 2006
5,525
943
214
Chengdu Province
Apr 8, 2012
#10
  • Apr 8, 2012
  • #10
I was posting from my phone earlier, so I didn't provide a link. Here it is:

http://www.cpgnation.com/forum/comp-cams-product-tech.html
 
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