Archive for EFSedan.com 1987 to 1991 Honda Civic Sedan Owners Club
 


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foooe-doooe

rebuilt head smoking?

i recently rebuilt the head of my sohc ZC and replaced most gaskets , valve seals, and laped the valves but now after doing this it has started to smoke. the leakdown numbers are all excelent. any ideas?
89 LX SOHC ZC

That is what usualy happens when you only rebild the head it starts pulling oil past the worn rings.
~Sp33~

The rings have good compression? When is it smoking? On a trailing throttle? heavy loads?
foooe-doooe

I figured that bad rings would show in the leakdown test tho? And it's smoking all the time even not under load should I do a compression test?
~Sp33~

Was it smoking before the head was rebuilt?
foooe-doooe

if i got someone to follow me and i built up a bunch of vacuum and then romped it it would puff for a brief second but i figured that was due to the 80 percent leakage in cylinder number 3 which is now fixed
~Sp33~

foooe-doooe wrote:
if i got someone to follow me and i built up a bunch of vacuum and then romped it it would puff for a brief second but i figured that was due to the 80 percent leakage in cylinder number 3 which is now fixed


Did you have the head rebuilt at a professional place? If the oil rings weren't smoking before hand, i don't think they would be now. Makes me think that something in the head hasn't been replaced correctly?

What're your thoughts on that?
foooe-doooe

actually the head was rebuilt in my garage by me and my bro who is a mechanic at honda we are very hopeful that it was the valve seals installed incorrectly due to the beer consumption Rolling Eyes
~Sp33~

If you take off your exhaust manifold, can you see the oil leaking down the valve?
foooe-doooe

Haven't tried that yet tomorow were replacing the seals w/o taking off  the head and if that doesn't fix it were gunu go from there
foooe-doooe


thus far its just apart for the night my bro left seals at his work so gota finish tomorrow wish me luck
~Sp33~

Good luck man, just out of curiosity, how much did you have to pay for the seals?

I got a quote from a local parts store for 170$ Such a rip off.
foooe-doooe

damnnnn i payed 156 for valve seals head bolts intake gasket head gasket and thermostat and alternator belt
foooe-doooe

and thanks for the goodluck ahaha
foooe-doooe

Grrrr just put the second set of valve seals in still smoking
~Sp33~

foooe-doooe wrote:
Grrrr just put the second set of valve seals in still smoking


Compression test tiem.
ThurmanMerman

~Sp33~ wrote:
foooe-doooe wrote:
Grrrr just put the second set of valve seals in still smoking


Compression test tiem.


Honestly should have been done around the same time the leak down test was done.
foooe-doooe

yeah the only problem is my bros compresion tester is it doesnt unscrew once in ur engine so i gota buy one
foooe-doooe

so i drove the car around today and it had a few weird symptoms, the throttle kept sticking open and would idle high like 2 grand but if i manually pulled the throttle or peddle back it would stop it. any thoughts? and also it kept lurching under load. again any thoughts?
~Sp33~

I'd be checking where the throttle cable attaches to the throttle body. Make sure it returns correctly.
foooe-doooe

dun dun dunnnnnn did compression test lets just say rings are clearly done so next move is i guess new block since you cant really just put in rings. and i already have a zc block minty fresh in garage just gota give bro 200
~Sp33~

Lamecakes.
foooe-doooe

yeah i know especially since i just got the engine from hmo.com shows how reputable they are :/
~Sp33~

Don't they do refunds?
foooe-doooe

if you get the engine put in by a dealership or place like that then yes but if you do it in your garage which i did then nope
ThurmanMerman

foooe-doooe wrote:
dun dun dunnnnnn did compression test lets just say rings are clearly done so next move is i guess new block since you cant really just put in rings. and i already have a zc block minty fresh in garage just gota give bro 200
 

Rebuild for Boost?
foooe-doooe

oh how i wish i had the money im 19 putting myself through skool with 20 hour a week job ahaha lucky to do what i do to car
~Sp33~

There must be something seeing as the oil rings are shit, poor installation doesn't ruin them, lol.
ThurmanMerman

~Sp33~ wrote:
There must be something seeing as the oil rings are shit, poor installation doesn't ruin them, lol.


My guess is when he hit 88mph the flux capacitor didn't engage correctly and it fried the rings.
foooe-doooe

See I checked the flux capaciter and it came up fine so idk, what year is it 1991 right Wink

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