incorrectly torqued my rockers.

rudeone707

New Member
May 17, 2003
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Fairfield, Ca
Well first off i would like to state that im an idiot. In an attempt to find my clacking noise I pulled off my VCs to make sure nothing was broken or loose, I figured while the VCs were off i might as well make sure that the rockers were torqued down. I didnt know that i was supposed to torque them when the cylinder is a top dead center. So i put everything back on and i snapped a small vacuum line that connects to a nipple on the EGR. So i started the car up and right when i started it up i heard a clapping noise that stopped right away. Then it ran just like it did that morning, then i drove down the street and it actually felt a lil better then it was before. But it did throw the Check Engine light, but i dont know if thats from the rockers or from the snapped vacuum line. Could the rockers throw the CE light? Could i really mess up my valves and rockers bad from over or under torqueing the bolts?
 
I am assuming that you are just running the stock rockers with the stock heads? I know that with my AFR's, the car will not run well at all if the rockers are torqued down too much. I think it was Dream94GT who overtightened his rockers the first time around and his car wouldn't even start.
 
red94fiveo said:
I am assuming that you are just running the stock rockers with the stock heads? I know that with my AFR's, the car will not run well at all if the rockers are torqued down too much. I think it was Dream94GT who overtightened his rockers the first time around and his car wouldn't even start.
yeah i still got the stock heads and rockers.
 
If you had a problem with the way u torqued your valvetrain you would know it. It would either clank loud, or the car would run like complete *****. Also mechanical problems like that dont usually trip the Check Engine light. Its probably something else, check all the plugs for ur sensors and stuff.
 
im goin through the same thing right now, i tightened them to much so i have no compression... just to check, what is the proper procedure for tourqing down the rocker arms.. I have the trickflow 1.6 roller rockers. thanks
 
haulbalz said:
im goin through the same thing right now, i tightened them to much so i have no compression... just to check, what is the proper procedure for tourqing down the rocker arms.. I have the trickflow 1.6 roller rockers. thanks

C'mon guys the FAQ sheet was created so things can be done correctly. Scroll down to section 11 and it has instructions.
http://forums.stangnet.com/showthread.php?t=334773

Also Comp and Crane have instructions on their websites with pics. rudeone you need to do yours over.

Start at TDC of number cylinder then follow the firing order. Your lower intake has the order in plain view (right up front). If not in the FAQ sheet section 8 has a picture diagram of firing order.
 
VibrantRedGT said:
C'mon guys the FAQ sheet was created so things can be done correctly. Scroll down to section 11 and it has instructions.
http://forums.stangnet.com/showthread.php?t=334773
I just know everyone read the whole thread, right? :D

rudeone707 said:
yeah i still got the stock heads and rockers.
Stock heads & rockers means pedestal mount. The FAQ #11 instructions are for stud mount. Unless you're doing something to change the required shim thickness, I'm guessing that there's not a lot you can do to screw up pedestal mount rockers unless you torque them so hard the bolts break, or leave them loose enough that the bolts back out.

Dave
 
rudeone707 said:
Dave, so should i take the covers off anyways or leave them as is?

Joe, will section 11 work just the same for pedestal mount rockers?

It gives you an idea as to where to start.

Start at TDC on #1, balancer should be at zero (If it says 90 then your on the exhaust stroke). The valves should be closed now. I ususally do pedestals at 18 ft. lbs. Then rotate the motor by hand 90 degrees. Now start on the next cylinder and so-on. Follow the firing order. Now do it all over again to double check what you've done.

http://cranecams.com/?show=techarticle&id=2