Ajuste y calibracion de valvulas en que afecta?
 

Buen dia a todos,

Vagando por otros foros :oscar: me entro la duda de saber que tanto afecta la calibracion de valvulas en un carro, mi carro tiene 74k millas y nunca le he calibrado las valvulas.... si estan descalibradas las valvulas que sintomas tiene q tener...

que diferencia hay entre unas valvulas calibradas y otras no calibradas (rendimiento)?

como cuanto tiempo se tardan en el taller para calibrar valvulas?

En todos los motores se ajusta igual o mejor ver las specs del motor?


Gracias a todos.

Saludos.

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

depende que carro tengas por que algunos traen ajuste hidraulico y otros se tienen que calibrar manualmente

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

x2 pero vos parece ke tenes un teggy vaa si las valvulas no estan calibradas adecuadamente no tiene fuerza repiqueteo consumo excesivo de gas incremento de humo en algunas veces varias cosa pero depende de ke carro sea

Re: Ajuste y calibracion de valvulas en que afecta?
 

Gracias,

Tengo un RSX pero tenia duda porque nunca las he calibrado... pero leyendo en vtec temple le dejo el lik por si les sirve http://www.vtec.net/articles/view-ar...&page_number=1

menciona que las valvulas del rsx se calibran despues de las 110k millas dependiendo como lo uses....


como se si es ajuste hidraulico o manual?

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

noo el tuyo ya es de buzoss tonces

Re: Ajuste y calibracion de valvulas en que afecta?
 

como asi de buzos? (cabrones :asaber: asdfasdfasd)

Re: Ajuste y calibracion de valvulas en que afecta?
 

no se ve que sea cosa del otro mundo en este vid...

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

Bajo rendimiento es el principal problema y el sonido que es bien característico.

Respuesta: Re: Ajuste y calibracion de valvulas en que afecta?
 

ahi esta la respuesta, si te gusta ensuciarte las manos, lo podes hacer vos, si no sabes ni rosca mejor paga

Re: Ajuste y calibracion de valvulas en que afecta?
 

Esto econtre ve asdfasdfasdfs q cabron ps :slap:

On the RSX, the cylinders go from passenger to driver side, numbers 1 – 4. Set the #1 piston (closest to passenger side) at top-dead-center (TDC).
Sub-Procedure: Rotating the Engine: (Steps 1 & 2)

1. <LI itxtHarvested="0" itxtNodeId="35">Jack only the passenger front side of the car so the front passenger wheel is off the ground.
2. Put the car in a high gear (4th works) and rotate the wheel while looking at the cam gears. There will be considerable effort required to rotate the wheel. (You can reduce this effort by removing the spark plugs if you're so inclined.) On the cam gears, you'll notice there are several distinct marks. There is a punch mark (shown below in green) and a TDC mark (shown below in red) on both cam gears. There is an arrow pointing to the punch mark on the variable timing control (VTC) gear, which is the gear on the right in the below picture (can't see the punch mark in this picture). For piston #1 to be at TDC, the TDC marks on the cam gears must be aligned, as shown in the picture below in red.
   
   http://sohc.vtec.net//article_files/143824/08_Sm.jpg
   (End Sub-Procedure)

Now you're ready to check the valve clearance for both the intake and exhaust valves. The intake valves will be closest to the intake manifold, the exhaust valves closest to the exhaust manifold. In the picture below, the green arrow indicates the valve adjusting screw, the red arrow indicates the locknut for the screw, and the blue indicates the position for the feeler gauge (between the valve stem and adjusting screw). When the feeler gauge is inserted to check clearance, it should look like the picture below on the right.
http://sohc.vtec.net//article_files/143824/09_Sm.jpg http://sohc.vtec.net//article_files/143824/10_Sm.jpg
For most people, simply checking to see if the valve is within spec is sufficient. Here at TOV, where maximum performance is desired, we want to adjust the valve to the minimum clearance so the intake and exhaust valves open as much as possible. The RSX-S's K20A2 valve specs are shown below. Please note the differences between intake and exhaust specs!
Intake: 0.21 - 0.25mm (0.008 – 0.010 in.)
Exhaust: 0.25 – 0.29mm (0.010 – 0.011 in.)

1. Insert the appropriate thickness of feeler gauge between the valve stem and adjusting screw for cylinder #1. (I find it easier to remove the feelers from the holder if possible, as shown in the above picture.) For the intake valve to open as much as possible on the K20A2, you would use the 0.21mm feeler. If the valve is within spec, there should be a slight amount of drag/resistance.

How much resistance is correct? A good method to use is the "go/no go" method. If you're using the 0.21mm gauge to check the clearance, select the next largest gauge of 0.22mm. If the valve is at the spec of 0.21mm, you should NOT be able to insert the 0.22mm feeler. So, when you cannot insert the 0.22mm feeler and the 0.21mm feeler fits with resistance, that is correct. With practice, the correct amount of drag becomes simpler to detect.

1. <LI itxtHarvested="0" itxtNodeId="53">If the clearance is incorrect, you'll need to adjust. The locknuts are tightened to a low torque specification (14 ft./lbs. on K20A2), but will need to be broken lose. Loosen the locknut on the valve you need to adjust. It is best to leave the locknut slightly snug to allow for finer corrections to the adjustment screw. <LI itxtHarvested="0" itxtNodeId="52">With the locknut snug, use a flathead screwdriver to increase or decrease the valve clearance based on your measurements. You will quickly realize that a small adjustment makes a big difference. It is here that the Honda valve adjustment tool (or similar) helps. See the picture below to see how the tool would work (my tool has a 10mm socket welded to a hollow tube). The tool allows the locknut to be held stationary when turning the adjusting screw, and the adjusting screw to be held stationary when turning the locknut. <LI itxtHarvested="0" itxtNodeId="51">Make the locknut hand tight once the clearance is correct. Now, recheck the clearance.
   
   http://sohc.vtec.net//article_files/143824/11_Sm.jpg
2. Once you've achieved the correct clearance, you'll need to use a torque wrench to torque the locknut to the correct spec (again, the K20A2 spec is 14 ft./lbs.). When the locknut is tightened, you'll have to recheck the clearance again. It will probably have changed slightly, which means you'll need to repeat the procedure again. This can become tedious until you've adjusted a few valves, since the clearance is going to change with even minor adjustments to the locknut. With some practice, you'll get a feel for what 14 ft./lbs. feels like and will only need to make sure you've got 14 ft./lbs. on the locknut versus actually moving it. Once you get this feeling down, you can use the Honda valve adjustment tool (or the like) to hold the adjusting screw while torqueing the locknut.

Be sure to check the clearance on each of the intake and exhaust valves. Remember, the clearance spec on the exhaust valves is different than the intake, so you'll need to select different feelers.

1. <LI itxtHarvested="0" itxtNodeId="71">Now, set the #3 piston at TDC by rotating the marks on the cam gears 90 degrees clockwise. The marks should look like those in the pictures below, with the punch mark shown in green, TDC mark shown in red, and arrow pointing to the punch mark on the VTC cam gear shown in blue. The left punch mark (green) and right punch mark (blue) should be inline with respect to each other and parallel to the ground.
   
   http://sohc.vtec.net//article_files/143824/12_Sm.jpg http://sohc.vtec.net//article_files/143824/13_Sm.jpg
   <LI itxtHarvested="0" itxtNodeId="70">Check the valve clearance on the #3 cylinder's valves. <LI itxtHarvested="0" itxtNodeId="69">Set the #4 piston at TDC by rotating the marks on the cam gears 90 degrees clockwise. The marks should look like those in the picture below, with the punch mark shown in green and arrow pointing to the punch mark on the VTC cam gear shown in blue. The left punch mark (green) and right punch mark (blue) should be perpendicular to the ground.
   
   http://sohc.vtec.net//article_files/143824/14_Sm.jpg
   <LI itxtHarvested="0" itxtNodeId="68">For the last cylinder, set the #2 piston at TDC by rotating the marks on the cam gears 90 degrees clockwise. The marks should look like those in the picture below, with the TDC mark shown in red and arrow pointing to the punch mark on the VTC cam gear shown in blue. The left punch mark and right punch mark (blue) should be inline with respect to each other and parallel to the ground.
   
   http://sohc.vtec.net//article_files/143824/17_Sm.jpg
   <LI itxtHarvested="0" itxtNodeId="67">Now you're done adjusting the valves. See if you need to replace the valve cover gasket, which would be indicated by any tears, cracks, or deformities in the existing gasket. If so, be sure to completely remove the existing gasket from the head and valve cover before installing the new one. The valve cover gasket should fit within the groove on the valve cover. If replacing the gasket, liquid gasket should be sparingly applied to points shown in the below picture (sorry, it is difficult to show them, but essentially, apply the liquid gasket to the 4 corners of where the valve cover will sit). Be sure to re-install the valve cover within 5 minutes of applying the liquid gasket.
   
   http://sohc.vtec.net//article_files/143824/18_Sm.jpg
   <LI itxtHarvested="0" itxtNodeId="66">Place the valve cover back on the engine head. Install the black rubber washers if you removed them, making sure none are cracked or damaged (if so, replace them). <LI itxtHarvested="0" itxtNodeId="65">Tighten the valve cover bolts in the correct sequence, indicated in the picture below. You should tighten them in several steps, incrementally tightening the nuts a little bit each time. The final torque spec is 7.2 ft./lbs.
   
   http://sohc.vtec.net//article_files/143824/19_Sm.jpg
   <LI itxtHarvested="0" itxtNodeId="64">Install the valve cover breather hose and oil dipstick. Be sure to wipe the dipstick clean first. <LI itxtHarvested="0" itxtNodeId="63">Install the coil packs by seating them over the spark plugs and connecting the wiring harness. Tighten the 10mm bolts for the coil packs to 8.7 ft./lbs. <LI itxtHarvested="0" itxtNodeId="62">Install the ignition coil cover and its (4) 10mm bolts. Their torque spec is 8.7 ft./lbs. <LI itxtHarvested="0" itxtNodeId="61">Install the 10mm bolts holding the cruise control cable and power steering pump bracket.
2. Install the intake manifold cover and its (2) 10mm bolts. Done!

Copyright 2003, Temple of VTEC

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

Vos y el teggy 97 (3ª generación)

también se calibra???? :x:

Bna onda :D

No sé dónde buscar :asaber:

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

no, estaba confundido no son de buzos, lo podes hacer vos mismo lo unico es ke tenes ke saber bien como gira el motor y su orden de encendido no podes calibrar solo asi por asi tenes ke calibrar conforme el orden de encendido y tener tu calibrador de ojas admision 8milesimas escape a 10 milesimas

Re: Ajuste y calibracion de valvulas en que afecta?
 

For most people, simply checking to see if the valve is within spec is sufficient. Here at TOV, where maximum performance is desired, we want to adjust the valve to the minimum clearance so the intake and exhaust valves open as much as possible. The RSX-S's K20A2 valve specs are shown below. Please note the differences between intake and exhaust specs!
Intake: 0.21 - 0.25mm (0.008 – 0.010 in.)
Exhaust: 0.25 – 0.29mm (0.010 – 0.011 in.)

Re: Ajuste y calibracion de valvulas en que afecta?
 

Buzos
Este componente va alojado en una cavidad especial del monoblock, existen 2 tipos diferentes de buzos, los mecánicos y los hidráulicos para cada uno de ellos varia el tipo de monoblock en el que se deben instalar..
Los buzos hidráulicos deben su nombre al hecho de utilizar el aceite del motor para Ilenar su cavidad interna y mantener contacto permanente con las levas durante todo su recorrido, los buzos mecánicos deben calibrarse periódicamente aunque funcionen de similar forma.

Existen en el mercado buzos especiales para árboles de mayor levante que los originales, son de material más resistentes y ligeros, tienen la cabeza mas chaparrita para contrarrestar la altura de la leva sin tener que modificar el monoblock.
Cuando se instalan buzos originales con árboles de alto levante, se debe rebajar un poco el monoblock e instalar un casquillo de bronce, ( este refuerza el block), cuando el motor debe sufrir grandes cargas de trabajo es recomendable instalarlos aun con buzos chaparros.

Respuesta: Re: Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

Eso es en frío vdd?

bna onda :si:

Re: Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

Valve lash adjustment

Posted 10-17-2002 at 12:00 AM by SurferX
Tags

To maintain the performance of your motor, it's a good idea to do frequent valve lash adjustments to make sure your valvetrain stays in good shape. If your engine has become a bit chattery it is possible that your valve lashes have gone too far out of spec and should be readjusted.

Standard tools
Ratchet
10mm and 19mm sockets
5/8" deep socket or spark plug socket
Super long ratchet extension
Floor jack (stock jack will do)
12mm box end wrench and flathead screwdriver (for B18B motors only)

Specialty tools
Angled feeler gauges
Tappet locknut wrench/adjuster - 10mm (for B18C motors only)

The locknut wrench is needed to hold the jam nut in place and the adjuster is for turning the adjustment screw on B18C motors. Honda has a specific tappet locknut wrench and adjuster, the part numbers are 07MAA-PR70110 and 07MAA-PR70120.

Since the Honda tools are expensive, both Snap-on and Harbor Freight carry more affordable and IMHO better tools for the job. You will want an adjuster for 10mm jam nuts for B18C motors only.

B18B motors do not need a special tappet locknut wrench/adjuster since the jam nut is placed higher up within reach. All you need is a 12mm box-end wrench and flathead screwdriver to do the job. Thanks to member TKBLAZER for confirmation of this info.

For the feeler gauges you will need 45 degree angled feelers. Make sure the feeler gauge set has the specific feeler range you need for your motor. Be careful not to mix up inches with milimeters when looking at the range on the package as there are many different sizes of feeler gauges.

Valve clearance specs

B18A
INTAKE: 0.006" - 0.007" (0.15mm - 0.19mm)
EXHAUST: 0.007" - 0.008" (0.17mm - 0.21mm)

B18B
INTAKE: 0.003" - 0.005" (0.08mm - 0.12mm)
EXHAUST: 0.006" - 0.008" (0.16mm - 0.20mm)

B18C
INTAKE: 0.006" - 0.007" (0.15mm - 0.19mm)
EXHAUST: 0.007" - 0.008" (0.17mm - 0.21mm)

NOTES:

-The engine must be completely cold to do a proper valve adjustment. You don't want any leftover heat in the motor so it's best if you do this after the motor has been sitting overnight.

-If you have adjustable cam gears, it is not necessary to reset them at 0,0 to adjust the valves as long as the cam adjustment isn't wild enough enough to begin opening the valves at TDC.

Remove the specified 10mm bolts and also remove the washers underneath. Then pull out the plug wires and valve cover breather. To pull off the valve cover, pull up on the front tab to get it loose. Don't try to pry the cover off as you can damage the outside of the head.

http://www.team-integra.net/images/B.../valveadj1.jpg

Wipe off excess oil around the plug openings to prevent dripping oil into the combustion chamber. Then use your socket extension and 5/8" deep socket or spark plug socket to remove the spark plugs. If you don't have a spark plug socket you can use the end of the plug wires to pull the plugs out.

http://www.team-integra.net/images/B.../valveadj3.jpg



Since you will need to turn the motor manually, you need to access the crank pulley bolt from the behind the driver side fenderliner. You will need to raise the front of your car or at least the front driver side until the wheel is out of the way enough to reach the bolt on the crank pulley.

There is a little opening allowing you to access the pulley bolt but I ended up dropping the socket inside the fenderliner so I just removed the two screws and moved the fenderliner out of the w. As you can see I needed two long wobble extensions to reach. You can remove the wheel if you don't have long enough extensions and you'll be able to get much closer to the bolt. The crank pulley bolt is 19mm.

http://www.team-integra.net/images/B.../valveadj4.jpg


Turn the motor counter-clockwise until cylinder 1 is at TDC. You will be able to tell by both the white mark on the crank pulley and by the marks on the cam gears. The gears may not appear to be straight but don't worry about that and only worry about lining up the marks on the teeth. If you over turn, don't try to turn the motor backwards, just keep turning another 2 rotations of the crank until you get back to your TDC point.

[img]http://www.team-integra.net/images/BAEC1978-D3A7-440]


http://www.team-integra.net/images/B.../valveadj7.jpg

Take out your feeler gauges, be very careful you don't have two feelers stuck together as they are very thin and it's easy to make that mistake. Slide the correct feeler gauge between the cam lobe and lifter. For example, if your range is .006-.007, the clearance is good if the .006 feeler fits and the .007 feeler does NOT fit. If the .007 fits or the .006 does not fit, then the clearance needs adjusting. You want to make it so the smaller of the two feelers fits and the larger doesn't. Ov time your clearances will likely loosen, I've never seen any case of them tightening so tighten as much as you can to fit that smaller feeler in.

If the clearance is good, then leave it and move on to the next valve. If it is out of spec, loosen the jam nut and position your tappet adjuster so that you can turn the adjustment screw while holding the jam nut in place.

Slide the feeler back and forth and tighten the adjustment screw until it starts to drag. The feeler may catch as you are trying to pull it out but that doesn't mean it's too tight. Slide the feeler back in again making sure you still feel a good drag. Sometimes after re-positioning the feeling you realize there is still more room to tighten.

To be sure you've adjusted the clearance correctly, try using the next size up feeler. Again, you should NOT be able to fit the larger feeler in, if it is able to slide in then the clearance is too loose and still needs to be tightened.

Re-tighten the jam nut, making sure the adjustment screw stays in place. Check the clearance again after the jam nut is tightened, sometimes the clearance can change even if you thought you held the screw in place. If all is good move on and check the next valve.

http://www.team-integra.net/images/B.../valveadj8.jpg

After you are done with the 4 valves on cylinder 1, move on to cylinder 3, 4, then 2, in that order. You will need to crank the motor to TDC for each of the cylinders you will be adjusting. Do the same process as before on each of the cylinders.

http://www.team-integra.net/images/B.../valveadj9.jpg

Once you're finished, re-install spark plugs and torque to 13 lbs-ft. Insert the rubber gasket and plug seals back into the val cover and reattach cover to cylinder head. Torque nuts to 7.2 lbs-ft, don't forget your ground wire. Be careful to not overtorque the nuts as they strip very easily. Re-attach plug wires and don't forget the valve cover breather and fenderwell if you removed part of it.

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

:adorap: gracias vos

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

la verdad te conseguiste buena info....

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

todo esta en cuestión de saber usar www.google.com :cheebs:

Respuesta: Ajuste y calibracion de valvulas en que afecta?
 

y pelarsela tambienn

Re: Ajuste y calibracion de valvulas en que afecta?
 

pelarsela 2 minutos asdfasdfasdfasdf

mas facil buscar todo esto por serie de motor