Smoking Issue (lsj turbo)
08-21-2011, 04:58 AM
#53
Depends on where the noise is coming from. Might just be bad timing (not the timing of the motor... but the timing of the knocking starting). Might just be that your Chain Tensioner was dying, and the low oil helped to kill it off. Oooooor you might have destroyed your rod bearing(s). It would help if you gave more details other than, "its knocking".
08-21-2011, 10:56 AM
#54
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i really want to give more details, but I didn't want to keep it running just to hunt for the knock. If anything, it sounded like a loud clunking, almost as if there were ball bearings in a dryer. Can't tell you where the noise was predominant since I was hearing it from inside the cabin. The rpm's didn't seem to affect the noise either. I was thinking (and am still thinking) that it's the timing chain tensioner. I'm at about 32k miles so it's a little early mileage wise, but not completely improbable.
08-22-2011, 04:09 AM
#55
Timing Chain Tensioner isn't a clunk though... its more of a click... like a hammer tapping on nail real fast. I used to have a video... think I deleted it. The sound would appear to be coming from the passenger side, back of the block. When mine died, it sounded/seemed like it was the turbo making the noise. And it responds to changes in RPM. Pretty much anything associated with the rotating assy will respond to RPM changes.
08-24-2011, 11:32 AM
#59
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damn! that sucks. mileage doesnt matter if the engine is low on oil. at idle if its a slow frequency tick/knock its your upper engine. if its a faster frequency tick/knock then its your lower assembly. the cams spin at 1/2 the speed the crank does so this should help you determine where the noise is coming from. most of the time when an engine is ran low on oil and it is caught quickly the engine top end gets most of the damage. hopefully you werent doing full throttle runs down the street with low oil or driving for long periods of time. if so your engine will need a rebuild. this would be a good time for some low compression pistons and some eagle rods 
08-26-2011, 11:47 AM
#61
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08-26-2011, 01:12 PM
#62
I'm running a modified hahn stage 5 setup and just like hungry hip, i had a pretty nasty smoking issue which was caused by hahns craptastic no drill oil solution. Ended up drilling the pan at the very top and running the line. I have never had the problem since. And btw, i do not run a restrictor nor do i run a catch can... I just recently put on a breather filter that zzp sells.
08-26-2011, 02:57 PM
#63
yes and no. being lower compression, you'll HAVE to run more boost to make up for the lower compression. where as with stock or higher compression. you won't need to run as much boost and when youre tuning and see no knock you can increase timing instead of upping boost. i ran 30psi on stock compression, did 591. only reason we stopped at 30 was cause the injectors went static, coulda hit 40psi easily with 198s
08-26-2011, 06:36 PM
#64
And yeah, Eagle's are cheap aftermarket rods.
yes and no. being lower compression, you'll HAVE to run more boost to make up for the lower compression. where as with stock or higher compression. you won't need to run as much boost and when youre tuning and see no knock you can increase timing instead of upping boost. i ran 30psi on stock compression, did 591. only reason we stopped at 30 was cause the injectors went static, coulda hit 40psi easily with 198s
08-29-2011, 12:32 PM
#65
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yes and no. being lower compression, you'll HAVE to run more boost to make up for the lower compression. where as with stock or higher compression. you won't need to run as much boost and when youre tuning and see no knock you can increase timing instead of upping boost. i ran 30psi on stock compression, did 591. only reason we stopped at 30 was cause the injectors went static, coulda hit 40psi easily with 198s
you may have run 30 psi on stock compression but i can guarantee it wasnt with pump gas.
lowering the compression allows you to raise the boost level and still use pump gas. while there is a limit to pump gas lowering the compression allows you to make as much power as you can with pump gas. if you exceed the capabilities of pump gas then its not much of a street car.
08-29-2011, 12:35 PM
#66
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im not doubting the amount of boost that can be run. all im stating is that pump gas has its limits and lowering the compression will allow you to squeaze as much power out of pump gas.
08-29-2011, 04:04 PM
#67
this is true but the higher the compression and the more boost you run, pump gas is no longer an option......
you may have run 30 psi on stock compression but i can guarantee it wasnt with pump gas.
lowering the compression allows you to raise the boost level and still use pump gas. while there is a limit to pump gas lowering the compression allows you to make as much power as you can with pump gas. if you exceed the capabilities of pump gas then its not much of a street car.
you may have run 30 psi on stock compression but i can guarantee it wasnt with pump gas.
lowering the compression allows you to raise the boost level and still use pump gas. while there is a limit to pump gas lowering the compression allows you to make as much power as you can with pump gas. if you exceed the capabilities of pump gas then its not much of a street car.
yeah the 30psi was on 110.
........91octane yeilded 443whp 358wtrq at 20psi, no meth injection, unported head. so even though i made my injectors go static on pump gas at only 20psi and then made a 1,600 mile cross country trip with the car it's not much of a street car?? i only maxed out the injectors, not the capabilities of the gasoline. don't worry buddy you'll be seeing 500whp on 91octane and no meth soon enough.
my car is just as streetable as a prius, the only difference is i make 600horsepower.
Last edited by EXsoccer1921; 08-29-2011 at 04:09 PM.
08-30-2011, 05:18 AM
#69
Its harder for people running 91 than it is for the fortunate ones like me, who have 93 and 94 readily available at almost every gas station.
08-30-2011, 12:33 PM
#70
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30psi on pump gas can, and has been done. By quite a few people, actually. The size of the turbo will greatly affect your ability to do this, as well.
Its harder for people running 91 than it is for the fortunate ones like me, who have 93 and 94 readily available at almost every gas station.
Its harder for people running 91 than it is for the fortunate ones like me, who have 93 and 94 readily available at almost every gas station.
08-30-2011, 01:12 PM
#72
stock compression on pump gas at 30 psi??? i dont believe it. if you lower the compression enough yes maybe but not with stock n/a compression. pump gas would detonate long before 30 psi on stock compression. everyone by me uses race fuel after low 20's in boost. i would definitely have to see some proof and ill shut up, appoligize and retract my statement.
Quite a few turbo swapped LSJ's have ran 25+ psi on pump gas. IIRC, INFE was running around 28psi with his Billet HP5857, before he swapped up to the Billet HP6262. 100% stock rotating assembly.It can, and has been done.
08-31-2011, 11:55 AM
#74
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Who said anything about N/A compression? The LSJ is a F/I engine. Quite a few turbo swapped LSJ's have ran 25+ psi on pump gas. IIRC, INFE was running around 28psi with his Billet HP5857, before he swapped up to the Billet HP6262. 100% stock rotating assembly.
It can, and has been done.
Quite a few turbo swapped LSJ's have ran 25+ psi on pump gas. IIRC, INFE was running around 28psi with his Billet HP5857, before he swapped up to the Billet HP6262. 100% stock rotating assembly.It can, and has been done.