low compression on a fresh motor

[LTUDSM]

well im having problems with blue smokes,that are coming from my tailpipe.I just rebuild the engine ,and still breaking in the motor. (200 miles already).I checked compression,and i got 125psi across the board.I added up one cap of oil in every cylinder,and the copression went up to 150 PSI in all cylinders.
I got:
.20 bore
Wiseco pistons and rings.rings are gapped to spec.
Eagle rods
ACL main and rod bearings
Neww water pump,oil pump,tensioner pulleys,auto tensioner,Cometic metal HG

 

[RedEvil]

Rebuild the turbo and deck the block! You have to deck the block when you use metal head gaskets. Both the head and the block have to be perfect so you wont have any leaks! That could be your problem!.

 

[turboglenn]

I would start running it a little harder. You pretty much have a window that you have to seat the rings in. Dont be afraid to run it a little

Agreed, cylinder pressure helps push teh rings out to the cylinder walls and helps them seat..More boost = more pressure, but keep within limits. As has been said, you have a very small window to seat the rings.. Don't be afraid to run it a little hard, vary the RPMs ALL THE TIME..Up and down up and down.. run it up about 3/4 throttle to about 3/4 of your RPM band (say 4500 - 5500rpm) and let off and let the motor coast under vacum and let the RPMs drop, then go at it again. Vasrying RPM and load is key to not only seating rings but setting all the bearings up for the type of life they are going to live.

I always liked to run my motors in hard because everytime i've done an "easy break in" i get motors that smoke a little, have lower compression numbers and just don't run as well as the ones we break in hard.

Here's a link to an article on break in that i like to keep around (read everything you can on this guy's page...really a TON of great info)

Break In Secrets--How To Break In New Motorcycle and Car Engines For More Power

 

[jwcardy]

yeah man, break that motor in hard...i break all my motors in on the dyno...haha ive never had an issue with any of them...
-wes

 

[LTUDSM]

i took my turbo off the car today,and i saw horrible thing,it was alot of oil in my exhaust side of turbo housing and the top where bolts up to the exhaust manifold .The turbo inlet was clean,and the part where the ic pipe connects to the turbo,was clean too.

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[LTUDSM]

the last 90 miles that i ran,I ran it hard,and maybe thats why my compression went up a lil. It went from 125 to 145 ,So im gonna wait couple more weeks till i get my turbo back,and then, run it hard more,and i hope everything gonna be perfect

 

[turboglenn]

A new engine will burn and leak some oil past the rings in the begining, no big deal. But driving it too lightly will make it where that never stops. Running it hard to seat the rings up good will stop teh smoking... MOst motors i've built will generally smokea little for the first couple hundred miles (very lightly, but it's still smoke just to clarify, i'm not talking clouds, just a few puffs here and there)

The amount of smoke in your video is normal, that's what i'm usually dealing with for the first few hundred miles. I know it can be a very nervous time when running in a new engine (especially if you don't build 3 or more a year), BUt things sound good, the smoke isn't excessive, i think you're gonna be just fine

That turbo is definitely cooked though... That much shaft play is BAD BAD BAD... at leat you caught it before it went completely out and filled your intercooler with compressor wheel pieces.

 

[LTUDSM]

and im smoking like a steam machine ))) when i start my car ,my neighbors are talking crap through their windows

 

[LTUDSM]

i dropped my turbo at Extremepsi and they asked me if i want to put a Ball bearing cartridge instead of the journal bearing,and i said,that im gonna think about it.So what should i do??? Should i go with bb cartridge, or just get the journal bearing replaced to a 360 rotation? And is that bb cartridge expensive??? thanks a lot....

 

[Artago]

Hey all. I figure I'd jump in on this thread since I'm having the same problem. Rebuilt motor that smokes like a biatch. Unfortunately I'm already put 2000 miles on my motor and the break-in procedure is over. Is there anything I can do short of tearing the engine apart and starting all over?

Thanks,

Tomas