so in my 2nd session at expo4 i start noticing a loss of power.....then other cars start whizzing by.....i start pulling into the pits and a cel pops up and the idle is really lopey/bad. i get mr jack harris to check it out; vafc is reading half the vacuum pressure it should. prognosis: burnt valve(s).
so i drive all the way back to nj to pick up my friend's tow rig, go all the **** way back to beaver and tow this pos back - 20hrs of driving in 24hrs.
i've spent the past 3 days taking the car apart (after work i get 1-2hrs).
see if you can spot what ain't right!
cylinder #1

cylinder #2

cylinder #3

cylinder #4

fortunately there does not appear to be any piston damage. where o where did the little valve chunk go?!
piston #1

piston #2

piston #3 it's just oil

piston #4

weight reduction! who wants to race?!

 

would you gents recommend replacing all 4 valves in cylinder #3? they don't look like the other 3 cylinders.

how does the motor look otherwise?!

the cylinder walls of #2 & #3 are nicey nice smooth.

 

#3. your missing a chunk out of your valve

you don't have to, but i myself would proboblly replace all 4 valves.

 

damn......... wow
i would just replace all exhaust if got money r just all #3.

 

Damn man, how did you manage to do that??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by magic hat #9 &raquo;</TD></TR><TR><TD CLASS="quote">they don't look like the other 3 cylinders</TD></TR></TABLE>

Probably just because of what happened in that cyl - not because there's anything wrong with them.

I would pull all the valves out and have them checked out - cheap insurance.

 

Ti valves and retainer and head job

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22A EG6 &raquo;</TD></TR><TR><TD CLASS="quote">Ti valves</TD></TR></TABLE>

Uh, ok...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">
I would pull all the valves out and have them checked out - cheap insurance.</TD></TR></TABLE>

Sorry Aaron, any idea as to what caused that plug to melt either?

 

Could have been a lot worse, good to see it was kept at a min.

Good luck.

Insurance... 4 new valves and have the enite head checked out, cost little now save alot later

 

whats all that crap on no1 piston?

 

Your decision to go and get the tow rig was very smart IMO. You situation could have become much worse had you continued to drive on it.........so to you! I too would have all the valves pulled to get them checked out, just so there is no doubt about them!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">whats all that crap on no1 piston?</TD></TR></TABLE>

Piston #1 looks like Piston #2 doesn't it? Piston #3 is the oily one.

Couldn't the valve piece have been blown out on the upstroke of the piston, if so where is the piece now?

Sorry Aaron, that sucks but as already said coulda been worse. Thank God theres no holes in the block.

What's the head look like?

Anton - who seems to waiting for the inevitable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">

Piston #1 looks like Piston #2 doesn't it? Piston #3 is the oily one. </TD></TR></TABLE>
There seems to be a lot more build up on #1 piston than the rest, look at the stuff right by the arrow, a lot more pronounced than on any other piston. I'm wondering if that stuff comes off, or could it be the pieces of the valve melted onto the piston.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1GreyTeg &raquo;</TD></TR><TR><TD CLASS="quote">
What's the head look like?</TD></TR></TABLE>

1st series of pictures = head

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">
There seems to be a lot more build up on #1 piston than the rest, look at the stuff right by the arrow, a lot more pronounced than on any other piston. I'm wondering if that stuff comes off, or could it be the pieces of the valve melted onto the piston.

1st series of pictures = head

</TD></TR></TABLE>

Thanks, Ok, I did notice that so, what about blowing the chunk of valve out upon compression?

I do see the gunk in #1 but honestly, and I've only seen 1 other B18C5 apart before like that and the cylinders were way more gunked up with carbon than his is above. I mean the one I saw was filthy and caked on, his look very clean in comparison.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by El Pollo Diablo &raquo;</TD></TR><TR><TD CLASS="quote">whats all that crap on no1 piston?</TD></TR></TABLE>

i think it's an illusion from the camera and the lighting. don't worry, you'll get to see the motor up close once it's ready to go back together

 

must have happend recently ( during expo), otherwise you would have very low compression in the cylinder when u did the comp test

 

looks like some of that burnt electrode fused itself onto the #3 intake valve

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dan GSR &raquo;</TD></TR><TR><TD CLASS="quote"> looks like some of that burnt electrode fused itself onto the #3 intake valve</TD></TR></TABLE>

sure does...it should make a pretty desk ornament

 

hey aaron thats pretty impressive!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">hey aaron thats pretty impressive! </TD></TR></TABLE>

nah, your's was a much better example of a david hobbs KABLAMO!

 

sorry you had to tow, but glad you are on the way to getting her fixed

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote">sorry you had to tow, but glad you are on the way to getting her fixed </TD></TR></TABLE>

now the question is how to prevent it from happening again...

 

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

now the question is how to prevent it from happening again...</TD></TR></TABLE>

i'll ask the shop to check all the valves. maybe i bent one on track before? i've had 2 very minor oopsies on track going from 3rd to 2nd when it should've been 4th but the compression was always great and it never let off the clutch too far. beyond previously bent valves, the trouble started when the toda header went on - coincidence?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by esponet &raquo;</TD></TR><TR><TD CLASS="quote">#3. your missing a chunk out of your valve</TD></TR></TABLE>

oh my gosh, we've got some eagle eyes right here!!!