Rb26dett Is Bonkered ?

[DamageInc]

so last night went for a drive ,

driving along , gave it a squirt and then it started rattling , so i pulled over to inspect and there is a clunking noise in the engine bay ,

i assumed it was the clutch fan but wasnt , discovered it was coming from the back of the intake plenum ,

checked the oil and it was incredibly low , limped into a servo and got 2L of oil for it ,

put it all in , let it run through , turned it off , let it sit for 5 mins , started it up again for 5 mins and still made the clunking noise .

took it for a drive and it had no low end power and sounded like a WRX , soon as it came on boost it seemed fine :S

returned to the petrol station and got my mate who was cruising in his skyline with me ,

took him up the road and we both decided best to go home and park it .

limped down the freeway on the shoulder to home , got home and it cut out as i was going in the driveway , let it sit for a good 90mins and then came back to it ,

cold started it , didnt make the noise as loud , opened up the radiator cap and let the car warm up to see if it blew bubbles , nothing.

only thing we could see was some particles of gunk in the top of the radiator .

went and looked at the exhaust and there was bubbled up carbon and it was all over the ground .

this leads me to beleive i could of possibley done a head gasket ?

ask me any questions as i have no clue what it could possibley be and have no way of getting the car anywhere for a few days

cheers.

[Johnny]

Hmmm try n drain the oil from the sump or remove the sump and look for something floating around cos it reminds me of the time i blew a rocker arm in my s15, it rattled for a while and then went away cos the broken rocker and shims had fallen down into the sump.

The engine was crappy to drive but when it hit boost, it felt better but the power was lacking.

Good luck with everything mate, i hope its a small fix, please keep us updated!

[DamageInc]

Hmmm try n drain the oil from the sump or remove the sump and look for something floating around cos it reminds me of the time i blew a rocker arm in my s15, it rattled for a while and then went away cos the broken rocker and shims had fallen down into the sump.

The engine was crappy to drive but when it hit boost, it felt better but the power was lacking.

Good luck with everything mate, i hope its a small fix, please keep us updated!

cheers for the advice mate !

will drain the sump a bit later today when the sun goes down a bit .

as for removing the sump i dont really trust my self with doing that as i only have a shitty jack and 2 jack stands :s

[rev210]

Rebuild motor time. Bearings are rooted.

[MBS206]

Motor sounds definitely fubar.

Clunking, as mentioned, is generally bearings.

If it's from down behind the plenum, it's not very likely to be a cam or anything up top, but one of the crank bearings.

[CRoNic...]

Spun bearing would sound like putting marbles in a can and rattling them... or even running a stick along a corrugated fence... and you'll hear it when you first turn on the car and then it might go away (depends on how bad it is) but when you rev it over 3k you'll hear the sound again.

If it's the head, check the oil filler cap for chocolate-milk looking stuff. If you find that, the heads blown.

When's the last time you changed/filled up the oil? Sounds like it'd be using quite a bit of oil...

But it sounds like a spun bearing. Low oil = massive bearing issues.

How's oil pressure?

But it sounds like you'll be needed a rebuild... which will be between 5k and 10k but can go up and up... depends on how well you want it rebuilt, and what the quality of the engine is (block is okay? etc).

[DamageInc]

engine seems to idle fine but when you accelerate a bit it sounds like something has come lose up front of the engine ,

still has carbon water in the muffler and on the ground around the back of the car

hopefully taking it back to where it got dyno'd , tomorrow but they will no doubt try and stiff me

sigh

[MBS206]

Sounds head gaskety to me with the water issue.

But the rattle sounds bearing.

[DLOOOK]

Check the color of the oil and coolant for a signs of a BHG. But yeah that clunking sound may be your bottom end bearings.

[Weapon]

Yea, my 26 went the way of the grim reaper. It ended up chewing a piston ring and having a blown head gasket. If you drain the coolant and its a milky brown, head gasket time. But that knocking is cause for concern indeed

[DamageInc]

im taking it back to the place that dyno'd it , they said that they will look at it and see whats gone wrong , and hopefully do something about it .

[CRoNic...]

Fingers crossed... but then again, nothing these days comes free

[DamageInc]

Fingers crossed... but then again, nothing these days comes free

yeah

only time will tell , when i went there earlier they werent stuck up about it at all , they understood and didnt try to deny stuff

so that has reassured me a bit

*waits for phone to ring*

[DamageInc]

probably should post an update in here ,

almost 7 months on and it ended up being spun bearings on cylinder 5 & 6 and the pistons had mashed the valves on both cylinders.

i was going to rebuild but i gave up and bought a 25det

me and a couple of mates pulled the 26 out and i stripped it over a week or so and started parting it out.

right now the car is still off the road as im still tracking down parts for a 25det i bought ,

all im in need of is some oil piping, vacuum lines and a couple of coolant lines.

if anyone's the slightest bit interested ill dig up the pics of everything.

cheers for all your help in trying to work out what was wrong with my engine via a keyboard

shows that SAU is a good community and people aren't afraid to help out !

cheers guys

[N1GTR]

Put up pics, it cant hurt

Just to clarify, you're now putting an RB25DET into a GTR?

[DamageInc]

Put up pics, it cant hurt

Just to clarify, you're now putting an RB25DET into a GTR?

haha nah mate , its a r33 gts25t that had a 26dett in it , thats the ONLY reason im putting a 25 into it

ill post up some pics later today

[N1GTR]

Oh fair enough, that makes more sense! Didnt realise it was a GTST

Yeah someone may be able to benefit from the pics