A little background, cam gears slipped, when I did a compression test, it was 270 - 170 - 270 - 270

can a busted retainer like that be the reason for the significantly lower compression in that cylinder? The valve looks fine to me, but I'm no expert so I come to you guys

Do you think this valve is bent?





Modified by milano2kdc2 at 10:50 PM 12/14/2005

 

What happend to ur retainer?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by reddohcvtec &raquo;</TD></TR><TR><TD CLASS="quote">What happend to ur retainer?</TD></TR></TABLE>

Incorrect Install height / Valve Being pulled through the retainer / Rocker arm smacking into the retainer

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by reddohcvtec &raquo;</TD></TR><TR><TD CLASS="quote">What happend to ur retainer?</TD></TR></TABLE>

not sure, i just know that my skunk cam gears slipped and this is the outcome

 

up

 

If you do a compression test with a broken retainer, im pretty sure itll give you a lower reading.

 

you need to pull it out of the head first...

 

Thread a spark plug into that chamber, then fill the chamber with a liquid. After that, blow some compressed air up under the head and see if any bubbles appear around the valve seat. Bent valves dont usually seat too well.

 

the only way to tell for sure is to pull that valve out of the head

 

Looks pretty similar to heads I've pulled that have bent valves due to a timing blet breaking or slipping. I definently wouldn't try to put it back together without taking the valve out and inspecting it.

 

look at the top of your piston. if the valve made contact there is usually a mark in the carbon/piston. looks like the carbon or valve has been disrupted in the area i circled???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lohatch &raquo;</TD></TR><TR><TD CLASS="quote">look at the top of your piston. if the valve made contact there is usually a mark in the carbon/piston. looks like the carbon or valve has been disrupted in the area i circled???
</TD></TR></TABLE>

i looked at the piston and theres no marks of carbon disruption like the last time i bent a valve.

I'll go have it inspected by a shop to see what their input is..

thanks for the responses!

 

why not shine a light into the exhaust port? you can usually see a bent valve if you do that

 

put the head on it's side and pour some fluid into the port...if it leaks through, then your valve isn't sealing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thehatchninja &raquo;</TD></TR><TR><TD CLASS="quote">put the head on it's side and pour some fluid into the port...if it leaks through, then your valve isn't sealing.</TD></TR></TABLE>

you can use rubbing alcohol or paint thinner. backyard trick

best bet is to just dissassemble it and find out. little time now will save you a lot of time in the end if it is bent

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itralex &raquo;</TD></TR><TR><TD CLASS="quote">why not shine a light into the exhaust port? you can usually see a bent valve if you do that</TD></TR></TABLE>

I looked at it and it looks fine

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lohatch &raquo;</TD></TR><TR><TD CLASS="quote">you can use rubbing alcohol or paint thinner. backyard trick

best bet is to just dissassemble it and find out. little time now will save you a lot of time in the end if it is bent</TD></TR></TABLE>

ok, I'll try that tomorrow

up

 

i would say you definately tweeked the valve. look at the chamber picture just to the left of the circled valve face, see the partial moon mark. it hit the piston there.

 

Looks like it bent just enough to be disruptive. I've seen it before. Sucks .