Valve Lash and Cam Timing

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08-15-2010, 12:06 PM

#11

traysvega

Member

JUNIOR BUILDER

Join Date: Jun 2003

Posts: 87

I've always adjusted them this way.Hot.
pop the distrib cap rotate(bump) motor to no. 1 on cap.Set balancer to TDC 0....Adjust both intake and exhaust for no.1 cylinder

Rotate counter clockwise 90 degrees or 270 on balancer and set both for no. 8

Rotate counter clockwise 90 degrees or 180 on balancer and set both for no.4

Rotate counter clockwise 90 degrees or 90 on balancer and set both for no. 3

Rotate counter clockwise 90 degrees or 0 on balancer and set both for no. 6

Rotate counter clockwise 90 degrees or 270 on balancer and set both for no.5

Rotate counter clockwise 90 degrees or 180 on balancer and set both for no. 7

Rotate counter clockwise 90 degrees or 90 on balancer and set both for no. 2

Rotate counter clockwise 90 degrees or 0 on the balancer and your back to no.1 again... :wink:

Button on firewall. and maybe 10 minutes.

08-15-2010, 01:23 PM

#12

Tod74

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Join Date: Sep 2007

Posts: 4,137

I use the EOIC method and set them cold. Trying to do it hot sucks plus by the time you get them all done the temp has changed so how can you be consistant? I set mine .006 tight cold.

08-15-2010, 01:46 PM

#13

suicidebomb

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Join Date: Jul 2007

Location: Independence, Missouri

Posts: 1,181

HMMM, not one mention, of the "white rabbit, and the bird with a flexible bill," method.

08-15-2010, 01:57 PM

#14

fla1976

Senior Member

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Join Date: Aug 2007

Posts: 1,523

I didn't know you were looking for the high performance "white rabbit, and the bird with a flexible bill," method. I didn't know you had a vette engine. :lol:

08-16-2010, 08:21 AM

#15

cepx111

Senior Member

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Join Date: May 2006

Posts: 2,044

Quote:

Originally Posted by Tod74

I use the EOIC method and set them cold. Trying to do it hot sucks plus by the time you get them all done the temp has changed so how can you be consistant? I set mine .006 tight cold.

X2> This is my method too.

08-16-2010, 02:42 PM

#16

bbchevy

Senior Member

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Join Date: Mar 2003

Location: Fountain,MICHIGAN

Posts: 856

Lash

Quote:

Originally Posted by Tod74

I use the EOIC method and set them cold. Trying to do it hot sucks plus by the time you get them all done the temp has changed so how can you be consistant? I set mine .006 tight cold.

Tod,
In My Few Years,I ALWAYS go .004,Tight Cold IRON Block,Alu.Head.
Now with a ALL ALUMINUM Motor,that is a Shot in the..............Well lets just Say TRIAL and ERROR!?
But,if .006 works for you,than Use it!!!
Even when You set the Lash @ X,it may be DIFFERENT that the Way I FEEL X?
But a Constant Proceedure is a GOOD Rule of Thumb!
Later
G 8)

08-16-2010, 02:56 PM

#17

Scooterz

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Join Date: Mar 2006

Location: EUGENE,OR.

Posts: 3,391

Re: Lash

Quote:

Originally Posted by bbchevy

Quote:

Originally Posted by Tod74

I use the EOIC method and set them cold. Trying to do it hot sucks plus by the time you get them all done the temp has changed so how can you be consistant? I set mine .006 tight cold.

\

Ok, so as a beginner I have to say I feel like Tod said... by the time i get to the other bank, I am loosing temp & I must work fast. Again, from a beginner standpoint, I hate to rush. So- (correct me if I am wrong) there is about a .02 variance from hot/cold right? So if my lash is .26/.26 @ temp, I can safely go .24/.24 cold right??

08-16-2010, 03:05 PM

#18

bowhay

Senior Member

EXPERT BUILDER

Join Date: Nov 2008

Posts: 263

wow i feel kinda retarded now, lol i guess i just wrote it backards

08-16-2010, 03:44 PM

#19

TS1955

Senior Member

DYNO OPERATOR

Join Date: Aug 2007

Location: Lost Creek, WV

Posts: 533

I adjust mine like Demented explained. Exhaust starts to open, adjust the intake. When the intake starts to close adjust the exhaust. I also adjust them like Tod said, .006 tighter when cold. Works out great for me.

TS1955