Adjusting Valve Clearances 2.7TDi

[solarman216]

Never use a feeler gauge!?

These were like the bible back at Honda, why so Rick? I'm intrigued :thumb2

cos any motor with a good mileage on it will most likely have a valve stem diameter wear indent in the rocker, use a feeler and the feeler spans this indent so giving a completely false reading, been doing it a very long time mate, Rick

 

[AlexD333]

cos any motor with a good mileage on it will most likely have a valve stem diameter wear indent in the rocker, use a feeler and the feeler spans this indent so giving a completely false reading, been doing it a very long time mate, Rick

Hey I wasn't doubting you, I've seen your work :thumb2 just didn't understand.

I'm still not sure i understand fully :lol

Basically wear will give a false reading :lol

 

[solarman216]

Hey I wasn't doubting you, I've seen your work :thumb2 just didn't understand.

I'm still not sure i understand fully :lol

Basically wear will give a false reading :lol

OK for info sake, on a 100k engine the valve stems will have worn indents into the rocker surface, it is not unusual to see some worn but not others, I can only assume this is due to differing hardness qualities of the rockers, but this is the problem, from the adjusting point of view you cannot tell if an indent is there or not, so feelers become useless, now having tested this on a rocker with no indent the correct gap comes at touching to quarter turn back, problem solved, Rick

 

[AlexD333]

OK for info sake, on a 100k engine the valve stems will have worn indents into the rocker surface, it is not unusual to see some worn but not others, I can only assume this is due to differing hardness qualities of the rockers, but this is the problem, from the adjusting point of view you cannot tell if an indent is there or not, so feelers become useless, now having tested this on a rocker with no indent the correct gap comes at touching to quarter turn back, problem solved, Rick

Fair play, you win again Rick :lol

 

[Banshee]

Ok I'm outside now doing this job and really want to finish it rather than have to put it back together again

I'm ready to adjust the rockers and can see stuff moving when I'm moving the spanner on the pulley but how can I 100% make sure the piston is at TDC?

 

[rayf3262]

The "rule of nine"

• Check No. 1 valve with No. 8 fully down.
• Check No. 3 valve with No. 6 fully down.
• Check No. 5 valve with No. 4 fully down.
• Check No. 2 valve with No. 7 fully down.
• Check No. 8 valve with No. 1 fully down.
• Check No. 6 valve with No. 3 fully down.
• Check No. 4 valve with No. 5 fully down.
• Check No. 7 valve with No. 2 fully down.

Note that whichever valve is fully down, adjust the valve which makes up to 9 when the two numbers are added.


Then you do not need to worry about TDC....

 

[Banshee]

The "rule of nine"

• Check No. 1 valve with No. 8 fully down.
• Check No. 3 valve with No. 6 fully down.
• Check No. 5 valve with No. 4 fully down.
• Check No. 2 valve with No. 7 fully down.
• Check No. 8 valve with No. 1 fully down.
• Check No. 6 valve with No. 3 fully down.
• Check No. 4 valve with No. 5 fully down.
• Check No. 7 valve with No. 2 fully down.

Note that whichever valve is fully down, adjust the valve which makes up to 9 when the two numbers are added.


Then you do not need to worry about TDC....

When you say fully down do you mean spring compressed?

 

[rayf3262]

Yes, fully open, fully down, fully compressed.....

 

[The Patrolman]

Quote:
Originally Posted by solarman216
it is not noisy tappets that you should worry about, it only puts your valve timing out by a tad, no it is the quiet ones that do the damage, not enough clearance = burnt valves, not a common occurrence, but does happen, and yes both engines are the same, and never use feelers just screw down till touches valve then back off quarter turn, Rick

Never use a feeler gauge!?

These were like the bible back at Honda, why so Rick? I'm intrigued

It's the same withe the Torques things:nenau
Tighten it till it strips the thread and then back it off half a turn:thumb2

Alex... this is a joke! if in doubt call Rick:thumb2

 

[AlexD333]

Quote:


Alex... this is a joke! if in doubt call Rick:thumb2

Don't worry, he's on speed dial :lol