help camshaft caps torque?7mgte :(

[danameisgee]

i need help i have a noise coming for the head i'm think it has to do with the torque on the camshaft bearing caps does anyone know the spec ? someone toed me 7-8 lb then someone said 14lb which is it ?

 

[toy fanatic78]

14 ft lbs,there is a tightening order/sequence also,will post if needed.

 

[Poodles]

 

[toy fanatic78]

Poodles,go to pg EM-63,there is a different sequence,the one you posted is for actually checking clearances with plasti-gauge,not just tightening the cam caps.

 

[Poodles]

Interesting...

 

[toy fanatic78]

I only noticed 'cause I have a tendency to read through stuff like that backwards.

 

[IJ.]

Good catch Nerdly

 

[danameisgee]

i torqued the camshaft bearing tops to 14lb the noise is less but still have noise what should i do ?

 

[Jeff Lange]

What noise? What are your valve clearances?

Jeff

 

[paradox616]

i torqued the camshaft bearing tops to 14lb the noise is less but still have noise what should i do ?

i had a similar noise, i told my machinist that i thought the cam cap was shagged, he laughed at me and told me to check the clearance between the shim and the cam @ 0 lift, i found a 0.25mm gap (using a feeler gauge)

i pin pointed mine by holding the engine @ 2000rpm while listening with a large screw driver on the rocker cover...

heres a pic but u cant see it good

 

[IJ.]

Hard to see anything in that pic PairOfDucks

 

[92nsx]

I agree with others check your valve clearance.
Intake should be .006-.010"
Exhaust should be .008-.012"

 

[emiliorescigno]

When taking close-up pictures: use this setting on your camera!!

 

[danameisgee]

thanks guys im gonna check it out in the morning .

 

[grimreaper]

pull the cam and have it measured for run out, a warped cam will open up the caps and makes a hell of a racket (think ear on diesel cam cover). Check the cap scoring is it centered?

 

[CajunKenny]

I'm gonna need this info this weekend!

Thanks guys!