cautionary tale

jim beam · Dec 8, 2009

My valve mechanism is squeaky-clean, with hardly any varnish, let alone
crud. I cannot tighten the locknuts without holding the screwdriver still,
otherwise the adjuster attempts to turn, even with a gauge in the way.
You're putting 18ft/lbs of torque on that locknut, which is sufficient to
push a lot of things around.
Click to expand...

my daily d15 is clean also, and the adjusters stay put as described.
the patient in the valve surgery case however, is crudded up, and a
screwdriver is essential.

Dillon Pyron · Dec 12, 2009

Thus spake Tegger said:

That's also kind of silly (to my mind) because it's REDUCED valve
clearances that do the big damage. You can't hear reduced clearances.
Click to expand...

Sure you can. It's that little "tink tink tink" sound of broken metal
bouncing around inside the cylinder.
--

- dillon I am not invalid

I love my country, It's my government I fear.

Hey, turnabout's fair play.

Dillon Pyron · Dec 12, 2009

Thus spake Tegger said:

That's also kind of silly (to my mind) because it's REDUCED valve
clearances that do the big damage. You can't hear reduced clearances.
Click to expand...

Sure you can. It's that little "tink tink tink" sound of broken metal
bouncing around inside the cylinder.
--

- dillon I am not invalid

I love my country, It's my government I fear.

Hey, turnabout's fair play.

Dillon Pyron · Dec 12, 2009

Thus spake jim beam said:

Wow! Nobody noticed the lumpy idle?
Click to expand...

d15b1 motor - unlike almost all other honda motors, the flywheel is
/really/ heavy - it idled reasonably well. they should have noticed the
lack of difference that plug made when pulling the lead though. a
compression test might have helped too.

initially, i suspected a thrown rod, [classic for "smooth idle"
misfires] but a long screwdriver down the spark plug hole showed the
piston still moving.
Click to expand...

You said "thrown rod" and my years of drag racing tell me that usually
means a see-through block, or at least an invisible pan.

i suspect it was done, but done badly. should leave the feeler gauge in
when snugging up the lock nut so the adjuster doesn't move.
Click to expand...

--

- dillon I am not invalid

I love my country, It's my government I fear.

Hey, turnabout's fair play.

Dillon Pyron · Dec 12, 2009

Thus spake jim beam said:

Wow! Nobody noticed the lumpy idle?
Click to expand...

d15b1 motor - unlike almost all other honda motors, the flywheel is
/really/ heavy - it idled reasonably well. they should have noticed the
lack of difference that plug made when pulling the lead though. a
compression test might have helped too.

initially, i suspected a thrown rod, [classic for "smooth idle"
misfires] but a long screwdriver down the spark plug hole showed the
piston still moving.
Click to expand...

You said "thrown rod" and my years of drag racing tell me that usually
means a see-through block, or at least an invisible pan.

i suspect it was done, but done badly. should leave the feeler gauge in
when snugging up the lock nut so the adjuster doesn't move.
Click to expand...

--

- dillon I am not invalid

I love my country, It's my government I fear.

Hey, turnabout's fair play.

jim beam · Dec 12, 2009

Thus spake jim beam said:

http://www.flickr.com/photos/38636024@N00/4162355180/

when is the last time you checked /your/ valve lash? don't you want to
avoid this little problem?

just pulled this from a civic with "an emissions problem". the
incredible doofus that was ripping the owner off trying to "fix" the
problem, simply welded in a second HUGE catalyst into the exhaust
system. and was disappointed when it didn't work! then they removed
the bulb from the "check engine" light...

Wow! Nobody noticed the lumpy idle?
Click to expand...

d15b1 motor - unlike almost all other honda motors, the flywheel is
/really/ heavy - it idled reasonably well. they should have noticed the
lack of difference that plug made when pulling the lead though. a
compression test might have helped too.

initially, i suspected a thrown rod, [classic for "smooth idle"
misfires] but a long screwdriver down the spark plug hole showed the
piston still moving.
Click to expand...

You said "thrown rod" and my years of drag racing tell me that usually
means a see-through block,
Click to expand...

usually. but not always - depends how hard the motor was going when the
cap finally let go. i was looking at one in a junk yard just recently.
the head was off and there was no visible external damage to the
block, but one piston was out of phase and rotated. you don't get
/that/ with the rod still connected, regardless of holes.

jim beam · Dec 12, 2009

Thus spake jim beam said:

http://www.flickr.com/photos/38636024@N00/4162355180/

when is the last time you checked /your/ valve lash? don't you want to
avoid this little problem?

just pulled this from a civic with "an emissions problem". the
incredible doofus that was ripping the owner off trying to "fix" the
problem, simply welded in a second HUGE catalyst into the exhaust
system. and was disappointed when it didn't work! then they removed
the bulb from the "check engine" light...

Wow! Nobody noticed the lumpy idle?
Click to expand...

d15b1 motor - unlike almost all other honda motors, the flywheel is
/really/ heavy - it idled reasonably well. they should have noticed the
lack of difference that plug made when pulling the lead though. a
compression test might have helped too.

initially, i suspected a thrown rod, [classic for "smooth idle"
misfires] but a long screwdriver down the spark plug hole showed the
piston still moving.
Click to expand...

You said "thrown rod" and my years of drag racing tell me that usually
means a see-through block,
Click to expand...

usually. but not always - depends how hard the motor was going when the
cap finally let go. i was looking at one in a junk yard just recently.
the head was off and there was no visible external damage to the
block, but one piston was out of phase and rotated. you don't get
/that/ with the rod still connected, regardless of holes.

cautionary tale

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