so i just recently got my b20 vtec. i did notice that it sounded like the valves were hitting the pistons or what i can describe as a tapping noise. Maybe I'm a little tired, but it seems like it's a bit louder now. How do I make sure it is a bent valve or not?

 

adjust your valves...and do a compression test

 

Run a leakdown test or compression test. If you have a high leakdown or low compression, bent valves could be your problem.

 

One of the symptoms of a recently bent valve (valves not adjusted) is a ticking noise beacuse the lash is out of adjustment. As mentioned above, perform a compression test. You can purchase a cheap tester for about $30. Do not worry about the peak value of the numbers, but focus on their consistency.

 

ticking noise is just adjusment of the valves...

if you have a bent valve the car will not idle correctly
it will stuter....

 

cool. i talked to the guy who installed my head, he also says the same thing so i'm a lot relieved. Going to be adjusting it soon, and get it down to Church or Bubba to tune

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mr.beeks &raquo;</TD></TR><TR><TD CLASS="quote">ticking noise is just adjusment of the valves...

if you have a bent valve the car will not idle correctly
it will stuter....</TD></TR></TABLE>

You are correct that the ticking noise is adjustment. However, a bent valve will not seat properly and will be out of adjustment. You are correct about the idle, but other problems can cause that as well.

 

i just bent all my exhaust valves and a few intake valves and my car idled like a WRX. i also had 20 psi in cylinder 2.




Modified by projectTeG at 10:35 PM 10/20/2006

 

man, 80 bucks to adjust valves..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B20inDCinLBC &raquo;</TD></TR><TR><TD CLASS="quote">man, 80 bucks to adjust valves..</TD></TR></TABLE>

It is easiy to do yourself. Plus you can let the car sit overnight to properly cool before adjusting the valves. Check out this link:

http://www.c-speedracing.com/h...t.php

Although not required, a tool like this ($12.99) really helps with a B-series VTEC head.



http://www.amazon.com/Alltrade...=UTF8

 

that's tight. I saw that site. Very helpful

 

that site that shows you how to do a valve adjustment is awesome.. thanks for that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">Although not required, a tool like this ($12.99) really helps with a B-series VTEC head.



http://www.amazon.com/Alltrade...=UTF8</TD></TR></TABLE>

That does help alot, but since I don't have one I just set the adjustment screw a little loose so when you tighten the lock nut it comes out right. Takes a couple tries to figure out how loose makes it come out perfect but it can be done. Something to think about.

 

there is a test you can do with a dollar bill. take it and fold it in half and put it on the exhaust and if it sucks it in then you got a bent valve. and if it isnt then it wont suck it in. try it and see if it works.

 

right now, i fixed it but for some reason i still hear some tapping noise. could it be possibly the bearings are gonna go out soon? dont hear those tapping noise when idle though, only when stepping on the gas.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RSX-R &raquo;</TD></TR><TR><TD CLASS="quote">there is a test you can do with a dollar bill. take it and fold it in half and put it on the exhaust and if it sucks it in then you got a bent valve. and if it isnt then it wont suck it in. try it and see if it works.</TD></TR></TABLE>

that would only test for a bent exhaust valve though, right?

 

lmfao..
get a compression tester best way
if you dont have a compression tester, get a hose into the cyl's and blow into each of them if air comes out of your intake manifold its ur intake, if it comes out of your headers, or exhaust or you hear anything around your exhaust manifold..its ur exhaust valves, its ghetto but when you need a quick diagnoise you do what you gotta do

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by projectTeG &raquo;</TD></TR><TR><TD CLASS="quote">i just bent all my exhaust valves and a few intake valves and my car idled like a WRX. i also had 20 psi in cylinder 2.




Modified by projectTeG at 10:35 PM 10/20/2006</TD></TR></TABLE>

Cocked like a pistol lmfao..
i remember dropping all my valves at the same time , when i sloppy and installed my s2s2's in a hurry and didn't set my timing right, motor went bye...lmfao you live and learn