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-   -   head issues (http://www.mitsustyle.com/forums/showthread.php?t=8674)

Enes 08-30-2005 09:11 AM

head issues
 
LOL

I did a leakdown test last night and gave up.

Put #1 to TDC , hook up air/gauges, 100psi drops down to 12psi . i listen to air, its coming out of spark plug hole on cyl#2 WTF

i put it on #4 hook up leakdown tester, shows 89 on this one.

move #2 to TDC, hear air coming throu #1 shows 12psi on the gauge
check on #3, air coming out of #1 shows 12psi on gauge..


how are #1 and 2and 3 tied together? any possible way?

-e

Matt D. 08-30-2005 09:31 AM

Re: head issues
 
It's all in your head. ;)

Honestly, the only thing seperating the cylinders are the pistons and the head gasket.

niterydr 08-30-2005 10:03 AM

Re: head issues
 
Quote:

Originally Posted by Matt D.
It's all in your head. ;)

Honestly, the only thing seperating the cylinders are the pistons and the head gasket.

You mean block and headgasket?

When you are doing a 'leak' test enes, pop off the radiator cap and listen for boiling. If you hear bubbling, you have a blown headgasket. They really shouldn't be pressurizing each other, unless you are pushing it past the rings into the crank case...

Enes 08-30-2005 10:18 AM

Re: head issues
 
Yeah i had the oil cap off, and i had the radiator cap off as well. no bubles there but that s probably because it can't build enough preassure in the cyl to get there. Since its all escaping into the cyl next to it.

If taking engine out didn't involve doing trany as well i'd so be taking the engine out of the bish right now. Or i should ask how hard is it to take engine out while keeping trany in there and then connecting it back together?

scheides 08-30-2005 10:34 AM

Re: head issues
 
If you're pulling the motor, pull it w/ the tranny attatched. It'll save you some headaches.

Enes 08-30-2005 10:50 AM

Re: head issues
 
yeah i supose its easier, but is it worth it to take whole engine out to do headgasket?

Shane@DBPerformance 08-30-2005 10:59 AM

Re: head issues
 
No.

JET 08-30-2005 11:15 AM

Re: head issues
 
Just pull the head off. You should be able to have it off in a few hours, then you can see what the problem is.

Onefast99gsx 08-30-2005 11:18 AM

Re: head issues
 
Enes- weren't you have troubles before with bad overheating? Head could be warped. Or am i thinking of someone else? I know you had some smoke troubles or something but i can't remember what the details were.

Enes 08-30-2005 11:39 AM

Re: head issues
 
it overheated a bit due to me leting it idle on turbo timer (no fans) without supervision.

i do have to mention the testing i did was on cold engine. will do it again tonight after i let it warm up

Onefast99gsx 08-30-2005 12:06 PM

Re: head issues
 
Does it smoke white at all?

How about oil on the dipstick, is it milky looking?

Those cylinders shouldn't be associated with one another at all. Air would have to bypass one set of rings, go into the crankcase, travel up to another cylinder and bypass its rings. My guess is the headgasket is shot.

I used a stock headgasket, and i sprayed each side with copper spray when i redid my head. Been holding up fine. Are you using ARP's? What's the most boost you hit with your 50trim so far?

Enes 08-30-2005 12:18 PM

Re: head issues
 
ARP's, 24psi 111 octane.
oil is clean, coolant is clean

its probably blown between cylinders, even tho the car idles and runs just fine..
super weird.

-E

JET 08-30-2005 12:38 PM

Re: head issues
 
Why bother checking it when it is warm? If it is bad, it is bad. Let me know when you get the head pulled off. I have only seen DSM headgaskets blow from the cylinder to a coolant passage (except for my metal one last year that melted out the back side of the head).

Outlaw1 08-30-2005 01:21 PM

Re: head issues
 
Did you TDC the cylinder right after the exaust valves closed or when the intake valves closed? If you try to pressure up the cylinder during overlap it will do what you are describing.

Shane@DBPerformance 08-30-2005 01:34 PM

Re: head issues
 
Are you sure you did the test on the compression stroke at TDC and not just at TDC?

Enes 08-30-2005 01:39 PM

Re: head issues
 
uhm... stupidity at its best... proven..

not sure, i just got it to TDC and did it. yaay RTFM

Outlaw1 08-30-2005 04:17 PM

Re: head issues
 
Quote:

Originally Posted by Enes
uhm... stupidity at its best... proven..

not sure, i just got it to TDC and did it. yaay RTFM

Do you know how to check to see if you're on the compression stroke?

Matt D. 08-30-2005 04:59 PM

Re: head issues
 
Hahah, oh man... Let's us know how that goes for you. :)

Enes 08-30-2005 05:02 PM

Re: head issues
 
please advise on how to check to see if i'm on compression stroke..


;p

Enes 08-31-2005 01:45 PM

Re: head issues
 
So how do i determine that Cyl1 is on compression stroke, ?
same should apply to #4 at the same time correct? or are they not at the same stage?

-E


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