valve adjustment for f4i, not for the novice

[elskipador]

when checking the clearances you want the feeler to slide in, but to have a slight amount of drag.

once you've checked those valves rotate the motor 180 and check the intakes on #4 & #2 along with the exhaust on #4 & #3

 

[elskipador]

make a chart to record all the different valves' measurements

 

[elskipador]

it'll look something like this when you're done with the check

 

[elskipador]

once you have recorded your out of spec valves its time to remove the cams. loosen the bolts in the #'red order stamped on the cam holder

 

[elskipador]

once you remove all the bolts wiggle the holder loose. BE GENTLE!!! i cannot stress this enough!!! also be careful not to drop tha copper washers that seal the bolts around the plug holes

 

[elskipador]

so i forgot to mention that BEFORE you loosen the cam holder bolts to remove the CCT!! BEFORE, BEFORE, BEFORE. i'd go back and change all the post, but thats a bitch use an extension to go through the frame and loosen the lower CCT bolt

 

[elskipador]

inside view

 

[elskipador]

heres what you do with the stock CCT

 

[elskipador]

now where were we??? on yeah so you've got the cam holder off. this is your view

 

[elskipador]

@ this point we'll actually be close to doing the adjustment. remove 1 of the cams. i usually start with the exhaust, but its your choice. be carful with the cam!!!! do not dent, ding, drop, etc...

 

[elskipador]

these are the valve buckets that are above the shims to actually adjust the clearances. DO NOT mix up the buckets!!!! if you do you'll have to put the cams back in and start over. i like to remove them 1 @ a time

 

[elskipador]

next remove 1 of the buckets with a magnetic pick-up tool

 

[elskipador]

remove the bucket from the motor bay

 

[elskipador]

use the magnetic tool to get the shim from the roof of the bucket

 

[elskipador]

measure the shim thickness with a micrometer

 

[elskipador]

like so

 

[elskipador]

determine the size of the new shim

A=(B-C)+D

A=new shim thickness
B=recorded valve clearance
C=specified valve clearance
D=old shim thickness

them get hte shim out of your collection

 

[elskipador]

put the new shim on top of the valve stem and replace the bucket and repeat with the other 7 exhaust valves. then replace the exhaust cam

 

[elskipador]

once thats done remove the intake cam and repeat all the shim measuring and replacing on the intake valves

 

[donoman]

Damn dude, this is a sweet How To!!!

Can you go over what to do for gear driven cams