Motor Setup:

B18C1

JE 9:1 Pistons
Stock GSR rods
Stock Sleeves bored .020 over
Block Gaurd
Stock GSR crankshaft
Stock Oil Pump

New OEM Valves
Aftermarket Valvetrain
Stock GSR cams

The motor is built for turbo, but is being ran NA at the time.

Our problem is that cylinder 4 will foul the spark plug from oil within 5 minutes of running. Oil is getting into the intake manifold, and we dont know how. We have removed all possible ways for oil to get into the intake manifold, but it is still present. The block was machined, and then re-machined to make sure it was not a machining issue.

For anyone that will help us out, if they need parts or service done to their car, we will make sure that you get taken care of.

 

bump for this man

 

Did your check your valve seals on the intake sid of that cyl.?

Did you install new valveguides also?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PyroProblem &raquo;</TD></TR><TR><TD CLASS="quote">Did your check your valve seals on the intake sid of that cyl.?

Did you install new valveguides also?</TD></TR></TABLE>

everything in the head was checked...

come on ppl, i need to know something!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PyroProblem &raquo;</TD></TR><TR><TD CLASS="quote">Did your check your valve seals on the intake sid of that cyl.?

Did you install new valveguides also?</TD></TR></TABLE>
we did install new seals and check them, we did also install new bronze valve guides and check them

we can not figure out why we keep oil fouling the #4 cylinder and oil is very evident in the intake manifold

Thanks for your help

 

Bump cause we need to know something people....

 

Did you make sure that you changed the donuts in the Valve cover. Would help to know if the oil is on top of the plug or on the bottom

 

The oil that is fouling the plug is internal. It is getting into the intake runners on the stock manifold. Then fouling the plug out, We have tested by eliminating the pcv off the manifold and it still fouls a plug.

Thanks for the reply.

 

Compression leak down test? Check valvecover for torn gaskets seals? is there a crack in the head?!?!? is oil puddled in your intake manifold? or just streaked? did you look at the intake port to see if its cracked from being over ported? thats all i can think of at this time.

what kind of catch can are you guys running?

 

compresion test and leak down tests are good 175psi compression, and under 10% leak down, the head has been checked for cracks but that only checks for coolant, all gaskets are okay. it is puddling in the intake manifold like it is geeting oil in there from somewhere. We are running stock pcv sytem with no catch cans at all. Breather on valve cover is vented open to air filter.

Thanks for your help as well.

 

I would DEFINITELY do a catch can system. Even tho I think you said that you took the lines out. Your PCV system uses the vacuum from your intake manifold to suck the gasses out of your crankcase...if you're boosted it will push the oil past your rings and into you CC(granted your PCV isn't working properly)...fouling out your plugs.

https://honda-tech.com/zerothread?id=697498
and
https://honda-tech.com/zerothread?id=1199935

check it....I'm probably wrong but its a good read none-the-less

 

He said he was NA but I think Ernie maybe on the right track. Excessive blow by could be pushing oil into the intake manifold through the PCV system. If your positive theres oil in the intake manifold then thats the only way to get oil there.

 

Thanks for your help, I'm not sure if that is going to solve or not. The motor is still NA and with the compression and leak down tests I think they were to good. As for the pcv system I did all the tests with vacuum and boost guages to see where I was and it was fine. I am thinking the machinist messed up with the cylinder head and can't find it. To me the valve guides could be leaking and it is getting a swirl affect in the intake manifold that why it is fouling the plug out and very evident in the manifold. But what ever it might be I am going to try everything, because I'm not going to rebuild for a fourth time. Thanks for all your input.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tricura &raquo;</TD></TR><TR><TD CLASS="quote"> Thanks for all your input.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tricura &raquo;</TD></TR><TR><TD CLASS="quote"> Thanks for all your input.</TD></TR></TABLE>

 

do you remember putting the piston in that cyl.
did it go in hard? could have broken a ring

 

the motor is in a torn down condition now, and I checked all that and it is okay. I just reassembled today and found not a thing wrong with the bottom end. Going to hear back from the machinist Wednesday and get the head back and reassemble that, to see if there is a problem in there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tricura &raquo;</TD></TR><TR><TD CLASS="quote">the motor is in a torn down condition now, and I checked all that and it is okay. I just reassembled today and found not a thing wrong with the bottom end. Going to hear back from the machinist Wednesday and get the head back and reassemble that, to see if there is a problem in there.</TD></TR></TABLE>

bump, we need this problem solved, please give us some input

 

I hope you find out what it was/ or that it doesnt come back!!!!

sorry we couldn't be of more help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ~RTErnie~ &raquo;</TD></TR><TR><TD CLASS="quote"> I hope you find out what it was/ or that it doesnt come back!!!!

sorry we couldn't be of more help. </TD></TR></TABLE>

we appreciate any input anyone has, thank you very much

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ~RTErnie~ &raquo;</TD></TR><TR><TD CLASS="quote"> I hope you find out what it was/ or that it doesnt come back!!!!

sorry we couldn't be of more help. </TD></TR></TABLE>

finally found it. It was some cheap *** bronze valve guides that the customer supplied us with. Will have to replace the factory ones and re-do the head over again. Thanks again for eveyones input.