Valve Clearance Check question

[GreyFox]

Gear heads, need some advice-- free of course.




Just checked the valve clearance at 23K. Seat is gone so might as well.

Intake
3 2 1
0.12 0.13 0.14 0.14 0.14 0.14

Exhaust
0.20 0.20 0.16 0.17 0.18 0.18

Spec for intake 0.1 to 0.15 Looks OK to me
Spec for exhaust 0.15 to 0.20 #3 on the edge


Recommendations?
As things wear, the valves tighten up right? If it had wires on it I would be more comfortable.
Plug change out while I'm in here?

 

[TurboFan]

May tighten or loosen. If there is valve train wear the clearance will increase. If the head of the valve recedes into the seat, the clearance will decrease. That may be the more common case, but the factory specs and service intervals are probably the best spot to begin.

 

[biker1059]

I have a couple of questions, How do you get the engine in position to check the valves? Do you rotate the engine using the bottom nut on the crank? and to adjust the valves do you have to remove the cam shafts to replace the shims?

 

[R34ME]

I have a couple of questions, How do you get the engine in position to check the valves? Do you rotate the engine using the bottom nut on the crank? and to adjust the valves do you have to remove the cam shafts to replace the shims?

Yes and yes cam cradle and cams must be removed unless you can lay your hands on special tool most dealers have that allows individual valves to be compressed so shim in bucket can be flicked out, good if only one or two needs adjusting, otherwise pluck the cams out and stick a set of nevs in :wink:

 

[R34ME]

Gear heads, need some advice-- free of course.




Just checked the valve clearance at 23K. Seat is gone so might as well.

Intake
3 2 1
0.12 0.13 0.14 0.14 0.14 0.14

Exhaust
0.20 0.20 0.16 0.17 0.18 0.18

Spec for intake 0.1 to 0.15 Looks OK to me
Spec for exhaust 0.15 to 0.20 #3 on the edge


Recommendations?
As things wear, the valves tighten up right? If it had wires on it I would be more comfortable.
Plug change out while I'm in here?

If she's quiet let em be for now when hot they would tighten up anyway.

 

[R34ME]

chris,
I'd run those exhaust on the high side of clearance. the intakes look fine. yes on the plugs,with antisieze.irridium, if you can.


greg

+1 what greg says swap out plugs for Deno Iridium IX24B seem to do the trick.

 

[TheSwede]

I have a couple of questions, How do you get the engine in position to check the valves? Do you rotate the engine using the bottom nut on the crank? and to adjust the valves do you have to remove the cam shafts to replace the shims?

Yes and yes cam cradle and cams must be removed unless you can lay your hands on special tool most dealers have that allows individual valves to be compressed so shim in bucket can be flicked out, good if only one or two needs adjusting, otherwise pluck the cams out and stick a set of nevs in :wink:

There's no special tool that makes it possible to change a shim, with cams still in place. Not on the Rocket engine.
/TheSwede

 

[GreyFox]

Plugs (iridium ) should arrive soon.

One more question, the Torx screws for the cams:

T15 is loose and T20 is no go.

Is there any other size? Special Triumph tool?


Thanks for the help.