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Valve Clearance, how do you like your valves, looser or tighter?

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Old May 28, 2008 | 12:19 PM
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92integraVTECgsr's Avatar
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Default Valve Clearance, how do you like your valves, looser or tighter?

I have a 2000 Integra GS-R and the spec's for the intake are .006-.007 and the exhaust are .007-.008.

What does everyone put theres too? Is it better to have them tighter or looser?

I usually use .006 and .007. This setup is tighter than .007 and .008 correct?
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Old May 28, 2008 | 12:32 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (92integraVTECgsr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integraVTECgsr &raquo;</TD></TR><TR><TD CLASS="quote">

I usually use .006 and .007. This setup is tighter than .007 and .008 correct?</TD></TR></TABLE>

you are right. .006 & .007 is smaller than .007 & .008
if they are too tight when the engine warms up the valve wont close completely on the seat. too loose and the valvetrain noise increases and the rockers clatter between the valve stem and cam. so its your car to find the happy medium
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Old May 28, 2008 | 12:49 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (lohatch)

a no play .007 is uaslly a very sung .006
etc. go tight on the looser clerance and you should be good for a happy medium. if your engine isn't happy then set them to be sung on the looser side. tighter always seem to consume more oil due to the heat. when metel expands you clearences tighten up meaning more friction due to tighter clearences of the valvetrain meaning more work for the oi.(burning oil)
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Old May 28, 2008 | 01:25 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (I smell secretions)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I smell secretions &raquo;</TD></TR><TR><TD CLASS="quote">a no play .007 is uaslly a very sung .006
etc. go tight on the looser clerance and you should be good for a happy medium. if your engine isn't happy then set them to be sung on the looser side. tighter always seem to consume more oil due to the heat. when metel expands you clearences tighten up meaning more friction due to tighter clearences of the valvetrain meaning more work for the oi.(burning oil) </TD></TR></TABLE>

Please dont fill this place with things like this...

Even on the "tight" end of the clearances listed, you won't be causing any problems. There is a spec for a reason. There will still be SOME clearance even after the engine is warmed up. Tighter clearances will not "strain" your oil more then a loose clearance. Thats just absurd. Its also not going to generate more heat in this case since its the clearance between the follower and the valve itself. If its too tight then the valves will not seat correctly. This will lead to burnt exhaust vavles, carbon build up on the exhaust side and a loss in compression (obviously). Too loose brings noise and increased wear.
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Old May 28, 2008 | 01:49 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (lohatch)

Well I got two 2000 Integra GS-R's. One is mine and one is my wife's. I did a valve adjustment on her car the other day and set the intake to .006 and the exhaust to .008. I also adjusted the timing back to 16 degrees.

Yesterday she said it felt like a loose of power down low. I know that from just putting the timing back to 16 degrees would make it feel sluggish because it looked like it was advanced passed 18 degrees (the distributor was almost all the way forward).

I just wanted to see if maybe it was better to set the intake valves to .007 and keep the exhaust to .008 (the looser of the specs).
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Old May 28, 2008 | 02:24 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (92integraVTECgsr)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integraVTECgsr &raquo;</TD></TR><TR><TD CLASS="quote">Well I got two 2000 Integra GS-R's. One is mine and one is my wife's. I did a valve adjustment on her car the other day and set the intake to .006 and the exhaust to .008. I also adjusted the timing back to 16 degrees.

Yesterday she said it felt like a loose of power down low. I know that from just putting the timing back to 16 degrees would make it feel sluggish because it looked like it was advanced passed 18 degrees (the distributor was almost all the way forward).

I just wanted to see if maybe it was better to set the intake valves to .007 and keep the exhaust to .008 (the looser of the specs). </TD></TR></TABLE>

Make sure you adjust the valves with the head at less then 100 degrees temp... I think thats the spec listed. Other then that I see no reason why you would have a large power loss from simply adjusting valves. If anything, you might see an increase from it.
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Old May 28, 2008 | 02:47 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (Hybrid96EK)

It's not a power loss to me lol.. The wife said it felt slugglish, so i advanced the timing to 18 degrees last night. Felt good to me. I'll see what she says tonight when she gets home from work.

And ya the engine was cold.
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Old May 28, 2008 | 02:51 PM
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Default

Trusting the butt dyno was your first mistake...

The fact that it wasnt even YOUR butt dyno was your second...
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Old May 28, 2008 | 02:56 PM
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Default Re: (Combustion Contraption)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">Trusting the butt dyno was your first mistake...

The fact that it wasnt even YOUR butt dyno was your second...</TD></TR></TABLE>

third mistake was trusting a womens butt dyno

if she's like my women shes just paranoid cause you tinkered with her car
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Old May 28, 2008 | 04:00 PM
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Default Re: (4g hatch)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">

Please dont fill this place with things like this...

Even on the "tight" end of the clearances listed, you won't be causing any problems. There is a spec for a reason. There will still be SOME clearance even after the engine is warmed up. Tighter clearances will not "strain" your oil more then a loose clearance. Thats just absurd. Its also not going to generate more heat in this case since its the clearance between the follower and the valve itself. If its too tight then the valves will not seat correctly. This will lead to burnt exhaust vavles, carbon build up on the exhaust side and a loss in compression (obviously). Too loose brings noise and increased wear. </TD></TR></TABLE>
if clearences are too tight then where is the oil going to go? it has to strain to do its job.....less oil mass for the same amount of surface area on the lobe.
beside leaving the valve slightly open it also doesnt allow oil to lube the lobes.......in very tight cases.
helms clearences wont leave the valve open either so that wont be a problem
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Old May 28, 2008 | 04:11 PM
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Default Re: (I smell secretions)

oil going into the combustion chamber has nothing to do with the valve adjustment . It could be valve seals but not the adjustment.
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Old May 28, 2008 | 04:20 PM
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Default Re: (I smell secretions)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I smell secretions &raquo;</TD></TR><TR><TD CLASS="quote">

beside leaving the valve slightly open it also doesnt allow oil to lube the lobes.......in very tight cases.
</TD></TR></TABLE>

you are basically saying that when the cam rides the rocker its not getting oil...
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Old May 28, 2008 | 04:27 PM
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Default Re: (bluedlude)

i like mine a little on the loose side.

the shop i work at in the afternoon, wants valve lash set in the middle on their clearance..like .004-.008 they want it at .006 ect... drives me f'n crazy.

plus if you have a clearance too tight and like someone said it wont sit back on the seat, chance of burning a valve.
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Old May 28, 2008 | 04:27 PM
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Default Re: (bluedlude)

I am saying when you tighter than the helms you run into friction and heat problems along with the valves not fully closing. but if you run between the helms guidelines you won' have any problems.

also I like to run loose on the valve lash on the d/d
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Old May 28, 2008 | 05:11 PM
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Default Re: (I smell secretions)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by I smell secretions &raquo;</TD></TR><TR><TD CLASS="quote">
if clearences are too tight then where is the oil going to go? it has to strain to do its job.....less oil mass for the same amount of surface area on the lobe.
beside leaving the valve slightly open it also doesnt allow oil to lube the lobes.......in very tight cases.
helms clearences wont leave the valve open either so that wont be a problem</TD></TR></TABLE>

If the lash is set to 0 then I agree, you will get little to no lubrication. Oil can flow in extremely tight clearances. If it couldn't, you would be in a world of hurt. The lobe is not lubricated by the valve lash setting anyways, so your arguement is worthless. The lobe is lubricated by the rack that sits ontop of the cam journal caps. The amount of oil the LOBES recieve has NOTHING to do with valve lash. Understand? Your statements are misguided and are very misleading. That was my point.

I never said there was an issue with the specification in the Helm either. I am sure Honda knew a thing or two when they published it.
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Old May 28, 2008 | 05:53 PM
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Default Re: Valve Clearance, how do you like your valves, looser or tighter? (92integraVTECgsr)

I always set them on the looser side of oem specs, and aftermarket get set to whatever the manufacturer recommends. Check them frequently to keep things in tip top shape.
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Old May 28, 2008 | 07:27 PM
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Default Re: (Hybrid96EK)

ahh to live in the world of only dohc vtec's.
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