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valve adjustment for f4i, not for the novice

elskipador

elskipador@gmail.com
Joined
Feb 22, 2003
Location
gilroy
Moto(s)
the trickest f2 you've ever seen.
Name
shawn
earlier this week i adjusted alan, scorpio6, valves. the ride in question is a f4i with 54k on the clock. its had 1 valve adjustment in those 54k. the week earlier alan had me sync the throttle bodies @ the TMP tech-day. his #2 cylinder had very low intake pressure, under 10 kpa. this pointed to out of spec valves. a week later we met and adjusted them. i had just gotten a new digi and decided i'd put it to good use.

1st....this is not for beginners!! the shim-under-bucket is the most difficult style of valve the japanese use. this is for those that have done either over-bucket or tappet style before. that said, i expect you yo know how to remove plastic and understand the term "reinstall" means the doing the opposite of how YOU took it apart

2nd....if you fuck it up...its your fault! i warned you.

3rd...save the :staRang for after

4th...enjoy :thumbup
 
Last edited:
did the guy attempt it himself... or is this just a "hey don't fuck w/ it yourself to save some scrill" type message...

Also... why you no answer my pm?
 
1st remove the lowers and seat. then remove the front tank bolts and loosen the rear, prop up the tank

1217309-tank_up.jpg
 
unplug IAT sensor. located on the top of the airbox

1217312-iat_plug.jpg
 
MeisI said:
why you no answer my pm?

he had me do it, knew it was difficult. more of a warning. i ordered 300.00 buck of snap-on dial indicater and clamps/stand so i can tell if the rotors, rim, tire, you are bent. but we'll need a press for the lower building. no STFU and let me finish :laughing
 
this is what you'll be looking @ after you remove the airbox top and side skirts

1217319-airfilter.jpg
 
remove the 6 screw that hold the velocity stacks and air box on

1217322-attachairbox.jpg
 
look @ this dirty fi unit!! that'll need sum cleanin' :laughing

1217324-dirtyfi.jpg
 
unplug coil harness from the left side of the main wiring harness

1217334-capplugin.jpg
 
remove ignition cap/coils from the sparkplugs

1217340-replacecaps.jpg
 
next remove the "timing inspection cap" on the right side of the motor

1217350-timing_cvr.jpg
 
ther is supposed to be an o-ring sealing this cover. notice its missing.......:wtf

1217354-missingoring.jpg
 
after removing the 3 bolts that hold on the valve cover and valve cover along with the 4 screws that hold on the throttle bodies this is what you'll be looking @

1217361-camjournal.jpg
 
rotate the motor til the line next to the "T" lines up with the notch in the case. this should be TDC for #1, the cam lobes face away from each other. if not rotate 360

1217367-ignrotor.jpg
 
you're now ready to measure the intake clearances on #1 & #3

spec is .20 +/- .03mm

1217369-intakemeasure.jpg
 
now measure the exhaust clearances on #1 & #2

spec is .28 +/- .03mm

1217371-exhaustmeasure.jpg
 
its a tight fit, but can be done. if you want more room remove the radiator

1217373-exhaustmeasure2.jpg
 
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