Wednesday, March 05, 2008 - 11:42 pm, by: Russell Rohde(Ax0n)
Replaced my harmonic balancer recently and had to take one of the inlet pipes off (the one just to the left of the battery) and found "quite" a buildup of oily, greasy residue on the inside of the pipe. Is this normal? I'm guessing not. Will I need to rebuild/replace my turbos? Is this the usual rear turbo leak i've been reading about?
Thursday, March 06, 2008 - 02:09 am, by: Craig Allan(Swamps)
When my turbos were going there was quite alot of fresh oil in the intake pipe, do you have any smoke or oil consumption problems? Is it old dirty oil? Maybe clean your intercooler out might help Also whats a harmonic balancer...
Thursday, March 06, 2008 - 06:45 am, by: Daniel Clarke(Dieseltrain)
Any turbo will have some degree of oily residue over time... If its the original pipwork and has never been checked, then its probably normal.. Over 15 yrs of turbo time there will be a build up of oily residue, so its nothing to worry about.
It wouldnt hurt, however, to remove all of the pipework and degrease it all, and also remove the intercooler and degrease that too..
I used 2 cans of degreaser, hosed them all out, used a few litres of Metho to help displace the water, Let it dry in the sun and replaced it all...
Oil residue can act as a heat retainer, and will also lower the heat exchange of air in intercoolers, as the oily residue covering the core inside, will retain heat, and act as a layer , thus reducing the working capacity of the intercooler.
Russell Rohde Tinkerer Queensland Soarer 1JZ 2.5L TT (JZZ30)
Thursday, March 06, 2008 - 10:47 am, by: Russell Rohde(Ax0n)
Thanks.
The harmonic balancer is also called the dampener Pulley. It's the thing on the very bottom front of the engine that the belt goes around to run alternator/power steer etc. Has a 'rubber' ring inbetween the pulley and the centre of the 'thing' to take out any vibration passed through the belt from alternator etc from getting to the crank of the engine. My rubber ring deteriorated and the outer pulley smashed off.
Thursday, March 06, 2008 - 11:00 am, by: Gavin Smith(Gavs)
Russell, did it happen when you were driving?? I had a common-dore and the harmonic balancer went at 80kph, sounded like the engine blew up, that was one loud bang, felt it through the whole car!!!
Russell Rohde Tinkerer Queensland Soarer 1JZ 2.5L TT (JZZ30)
Thursday, March 06, 2008 - 06:10 pm, by: Russell Rohde(Ax0n)
Gavin...
Yep, happened at about 60 but my rev's were pretty high - When i originally posted I said it happened at near idle cos I was worried about scorning or people not wanting to help but truth be known, I was near redline out of a roundabout. I definitly felt it through the WHOLE car. Almost like someone had launched an RPG while under my bonnet. Knew what it was even before I got out. Just by the fact that Alternator light came on, power steering went and there was no 'twang' like a belt snapping. It's a hard thing to control a slide when steering just goes instantly super heavy!
Thursday, March 06, 2008 - 06:25 pm, by: Peter Nitschke(Pen)
Russell, we would have helped anyway. Most of us redline at least occasionally.
It's probably not a bad idea for everyone to check their balancer, as they can be cracked for a while without coming right off - disaster waiting to happen.
Wear on the belt or pulley should be visible if it's in trouble.
Tuesday, March 11, 2008 - 04:37 pm, by: Russell Rohde(Ax0n)
Lucky - No wear on anything. Existing belt very good (still purchased and fit new belt - old belt in spare wheel just in case)
I removed my entire intake system from airbox to inlet manifold. Thoroughly Turpsed and Metho'd everything. Much to my surprise, I actually notice a difference above about 70 or 80kmph. Intercooler had A LOT of crap in it. Came up beautiful after I had finished.
I followed the "Clean stock intercooler" tutorial. I found it MUCH MUCH easier to remove the outlet pipe if you remove that solid plastic pipe that runs under the radiator first. For the inlet pipe, if you first loosen the the hose clamp at the top of the intercooler, then, loosen both clamps and remove the pipe from turbo output (runs over the pipe that comes from the back of the air filter box) After that, grab onto the rigid black pipe that runs inside the guard that connectos to the soft hose at the top of the intercooler and use that to get the hose off the top of the intercooler. I did all this while the intercooler was still fit in place (no bolts/nuts were loosened)
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