What Now.

BOOSTDEF · 29-03-2006, 12:56 AM

Heres the story,

Have changed the head to an EA head for lower compression and bigger chambers. Have left the EA cam and rocker gear in tact until i change all this when its all sorted out.

I just used a stock EF head gasket for now, as it will be all coming off in a few weeks. The reason i threw the head on is to get the wolf and injectors running right so i could get a good idea on what needs doing. Anyhow, heres the problem...

Since putting the head on, i have NO oil pressure, and a lot of rocker noise. When the oil light comes on a lot of noise is apparent, and when its off it seems fine. Oil is not milky and im not losing any at all.

The car will stall as if it is overheated after about half an hour of driving. This is wierd as it sits very cool on the temp gauge, and there is plenty of coolant there. Steam however will sometimes come out of overflow pipe. OIL temps seem to be very hot though.

The car wont rev over 3 grand and the boost gauge says 6psi, but there is no way its reaching the chambers as if it is leaking out of the inlet manifold, or there is massive blowby?? Not sure.

Anyhow, i dont know where to start so anyone wanna throw me some suggestions.

This is still using the stock ecu as i wanted to tackle 1 job at a time.

steven95falc · 29-03-2006, 08:10 AM

So all youve done is change the head and rocker gear yea ?

BOOSTDEF · 29-03-2006, 08:53 AM

just put a complete EA head in, and changed the head gasket.

EA2BA · 29-03-2006, 08:58 AM

You have an EF correct ?

did you hook the bbm vaccuum switch back up?

I have a similar set up in my car, so it does all work together.

BOOSTDEF · 29-03-2006, 01:14 PM

Im not sure which is the bbm vacuum switch, but i have looked over and over 20 times to see if there was anything i left disconnected and i saw nothing.

Im guessing a leaking inlet manifold gasket as i can hear air ИИИИing out when i boost it up...

Its the oil pressure im worried about.

TUFED6 · 29-03-2006, 01:26 PM

I can't work out what you could have done to upset oil pressure while you changed a head. Must be dealing with more than one fault?

I would have thought if your oil pump had packed up the motor would have siezed by now. Perhaps you have a leak where the oil lines for the turbo are plumbed in?

- John

Laminge · 29-03-2006, 01:29 PM

Will the car rev over 3 grand in Neutral?

Sounds like the same problems I am having, you may have plugged one hole by changes to the heads, to highlight another, in my case a pourris (spel) block

EFFalcon · 29-03-2006, 02:31 PM

get an oil pressure guage.
have u run the car with no rocker cover on?
(prepare for oil to go everywhere, cover up some things to make cleaning up easier)

i had the same sorta issues with my EF, just appeared to have no oil pressure, lots of noise and was crapping myself :P
pulled rocker cover off to ensure oil WAS getting to the rockers etc.

BOOSTDEF · 29-03-2006, 05:38 PM

Oil is getting to the rockers but after a very small amount of time just after start up...

It goes, start it, listen to a noise and then it will stop. IT WILL MAKE THE SAME NOISE WHEN FREE REVING IN NEAUTRAL... AND IT WILL REV OVER 3 GRAND IN NEAUTRAL.

Have checked all lines for oil leaks and there is not 1 drop coming from anywhere.

I am starting to think maybe thisheadis cracked or something??? I was thinking excessive blowby but wouldnt that increase pressure, not reduce it? That would also be wiered as the bottom end was fine before changing heads..

Say i was to drive off.. It would rev up to about 3200 and then drop back to 3000 and just sit there.

Its like LHM of some sorts really.

But say i drop it back to 1st at about 45-55kms/h, it will sit above 3 grand but the rocker noise is quite upsetting haha...

I might even check to see of the rockers are loose, as it definately sounds like it. Its not a tapping, its exactly the same noise a motor will sound like with very milky oil in it after a head gasket.

Please note oil levels are fine and oil is pure as.

Might look at changing to another head to see if things change.

EFFalcon · 29-03-2006, 05:43 PM

didnt you port the head yourself?

BOOSTDEF · 29-03-2006, 05:59 PM

Nope havent touched it.

Im only gonna get a valve angle job done at altedperformance. Ive been told thats all that is needed as velocities will be reduced with bigger ports. But thats another story.

This is a stock as a rock EA head off a running car.

BOOSTDEF · 29-03-2006, 10:12 PM

Ahh crap. Maybe this will explain a lot.

Checked out the rocker gear and turned a few bolts to realise they werent tight..

Kept turning and turning and about 5 of them in the middle are threaded. So i guess that would explain the noise....

But what about oil pressure and not revving ??

Its like it hits 3 grand and the throttle body just closes, but the turbo keeps spooling???

niko · 29-03-2006, 10:38 PM

Quote:

Originally Posted by EFFalcon

g
have u run the car with no rocker cover on?
(prepare for oil to go everywhere, cover up some things to make cleaning up easier)

doesnt make mess, as theres no vacum sucking the oil up, its very minimal if it does

EFFalcon · 29-03-2006, 10:40 PM

Quote:

Originally Posted by niko

doesnt make mess, as theres no vacum sucking the oil up, its very minimal if it does

give the car a rev, oil squirts out top of rocker arms.
makes a mess.
trust me, its the reason my extractors are more brown then blue.

EFFalcon · 29-03-2006, 10:41 PM

Quote:

Originally Posted by BOOSTDEF

Ahh crap. Maybe this will explain a lot.

Checked out the rocker gear and turned a few bolts to realise they werent tight..

Kept turning and turning and about 5 of them in the middle are threaded. So i guess that would explain the noise....

But what about oil pressure and not revving ??

Its like it hits 3 grand and the throttle body just closes, but the turbo keeps spooling???

oil pressure, may be just leaking out bottom of rocker gear, if its loose enough it would possibly loose pressure, not 100% sure on that.
if rocker gear isnt down 100%, it may not be giving full cam lift.

BOOSTDEF · 29-03-2006, 11:13 PM

well another head change i suppose... I knew i should have thrown the EF cam and rocker gear on the head b4 i put it on lol woulda saved me a lot of ИИИИing around.

ahh well

dansince86 · 29-03-2006, 11:36 PM

hello, i havent ever worked on the head of a car, but can i give u an opinion from an outsiders point of view, feel free to completly diss regard this.

as i have read BOOSTEF claims several of the bolts on the rocker gear are stripped, creating the noise issue, is it possible that with the loose bolts not creatinga perfect seal that the oil wont lubricate as it should, the poor seal could explain the low oil pressure. when the car starts the turbo spools up which would be the period when the engine has the most pressure inside poosibly enough to lubricate the rocker for the short time period, so when the pressure is lost after starting the oil can't lubricate properly because there is no vacuum as such, the hissing air noise could be the rocker losing it pressure.

ive probably just talked a whole lot of ИИИИ, just thought idehave a shot from what my basic physics knowlage is.

it would be greatly appreciated if boostef could let me know what the actual problem is.

sorry if doesnt make sense.

Cheers Dan

BOOSTDEF · 29-03-2006, 11:57 PM

naa it has no pressure on start up.. and then it settles down. Not the other way around.

But yeh, Im hoping its all linked to this... HOPING...

I just dont see where pressure could go though.. ????? I mean even if rocker gear was lifting a little, where could the pressure be released?

EFFalcon · 30-03-2006, 12:01 AM

oil goes into the rocker gear, the fact that its not being restricted by the lifters etc may effect it. just don't know how much of a difference that kinda leak would make.

BOOSTDEF · 30-03-2006, 12:14 AM

yeh tis a wierd one.... Just a dunga of a head...

Thanks for the help guys, appreciate it. The oil light only ever flickers on and off at idle... Thats what i dont get.

Wouldnt it go on at full revs when the rocker gear is actually being torqued up so to speak???

I mean a lot of noise at high revs but no oil light. Only at idle.

EFFalcon · 30-03-2006, 12:18 AM

higher revs = higher oil pressure do to higher rpm in oil pump.

BOOSTDEF · 30-03-2006, 12:20 AM

aahh that would explain it.

In another thread someone said that a faulty lifter would reduce oil pressure??? How would that be the case?

EFFalcon · 30-03-2006, 12:40 AM

everything i'm saying is based on theory.
i could be way off.

BOOSTDEF · 30-03-2006, 12:42 AM

Naa i know what your saying EFfalc... I was just wondering how a faulty lifter could reduce oil pressure lol Not trying to contradict you(just read it it seemed that way haha)

TUFED6 · 30-03-2006, 08:17 AM

Quote:

Originally Posted by BOOSTDEF

Naa i know what your saying EFfalc... I was just wondering how a faulty lifter could reduce oil pressure lol Not trying to contradict you(just read it it seemed that way haha)

The pump is only capable of supplying a certain volume of oil to the galleries, if one of the lifters is leaking really badly then the pump wont be able to maintain the pressure in the oil galleries.

It's the same story with the cam journal oil feed, if your cam isn't bolted down properly then there will be too much clearance in the cam journals and the pump might have trouble keeping the pressure up.

Your problems are actually making sense to me now...!

Sounds like the EA head has been BBQ'd at some point, the threads for the rocker gear seem to go soft and strip if its been cooked.

- John

BOOSTDEF · 30-03-2006, 12:09 PM

Ahh thanks for that... Will let you guys know once the new head is on.

Cheers.