Stillen supercharger and engine fail. :(
 

Hey guys, have a 2011 nismo with stillen SC KIT, upgraded oilcooler, and upgraded injectors. Had a massive engine phail last week. Car stalled, took forever to start back, and was knocking once it did. Not blowing smoke, no service engine light. Have it in the shop right now and so far it LOOKS like the SC is ok. Appears that the issue was a rod bearing. Upgrading to performance rods/pistons. Will find out tues if there's any damage to crankshaft or not. Say a prayer for me. This is gonna cost a little bit, plus my babies down for probably the next month. More to follow......

Sub'd..... And god im sorry hope it all works out for you...

sorry to hear that Dantrag, wish you best of luck.

What kinda tune were you running on? base tune?

No, ditched the canned tune and had an uprev custom tune.

Good luck man. Sucks.

Good luck man too...!

Hope it all comes good! :tup:

Serious bummer. What #'s were you putting down?

See good in bad. Now you can take her up to 700+ whp!!

but on the other end you'll have to ditch that stillen if you want power your shortblock can handle.

Isn't this the second motor only that has let go?
Werent they both on stillens?

Fingers crossed for a good result here. Good luck!

I'm leaning towards bad tune regardless of custom tune via Uprev.

Maybe he needed the 88mm pulley!!!!!;)

Had upgraded pulley and belts, at 8lbs was making 409whp which is where the phail happened. Have previously dyno'd 490whp at 12lbs. Having z withdrawal already.

Ouch. Stupid question. Can this be done from the bottom without the need to drop the engine and pull the heads?

Man that really sucks sorry to hear that. I have 20,000 miles on my stillen sc kit no problems yet. Maybe it was your tune.

Not sure if it can be rebuilt from bottom up or not. Have a feeling we're gonna have to pull the engine. Have a feeling we'll have to pull it. And yeah..... It's gonna get a different tune after the rebuild. :/

Fixed and sorry to hear man best of luck. At least you will be bullet proof in the future.

Sad to hear. Was it under load when it failed? Temps? Oil pressure? Other signs?

I'm curious to see what's in the oil pan and condition of your spark plugs. I might want to change mine soon so I'm going to check it out as well. Still on canned tune, but it's a daily.

Replacing the rod bearings and mains...yes you should be able to. I have before atleast on the older VG30DE motors. PITA, but do able. You have to release some pressure from the main caps.

If the crank has to be removed, timing components have to be taken off. If pistons/rods have to be pulled, then the heads have to come off. Might as well just pull it to make life simple and easy.

You did build the engine to go along with your supercharger right?

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Sorry to hear man, Mine popped too, But I was unlucky cause I didnt have the 10k to fix the car, Glad you have the funds.

^ 10K? What kind of rebuilds you guys doing?

It would have to be a pretty damn impressive built motor, since a stock shortblock and the install shouldn't be $10k.

Hope everything works out for you. The other thread about a used Vortech SC unit failing and now this.

Just curious, why did you take it back down to 8lbs? 490whp is impressive for 12lbs for the stillen kit. Do you know what your tuner set your target air fuel ratio at? and how aggressive was the timing?

Nah, not looking at 10k not going that rich. I'm hopeful to get out for 4500, realistically before its all said and done and I'm driving away should be no more than 6k and that's giving ~1k+ for incidentals.

And no, I don't know the exact tune specs. I do wonder though if if having an aggressive tune and then dropping the boost from 12 down to 8lbs wasn't somehow responsible.

Was qouted $8600 to pull motor and rebuild, bottom end with a stock short block a blew a hole in mine, :(. I always go over a bit becasue there would be always so odds and ends. IF it was $4500 I would still have the kit..An not sold it

Where have you been man?

Sorry for off topic. Ok yea. Replacement of short block and labor of pulling motor is half that cost. Sucks. I really like to learn to build my own.

You mean under $5k including parts and labor to pull the motor and rebuild/upgrade the short block?

So whats going on here ??? :)

im confused

what happened when the motor blew up?
did you retune when you lowered boost from 12psi to 8psi?

Ok so update:

Have GTM shipping forged rods, pistons, and head gasket. Forged crankshaft also otw. Some other misc. stuff also. Hopefully parts will be here by end of the week. Will post pics and new dyno map after the tune. Say a prayer for me, I miss my baby. I be fiendin' for my z!

Will for sure glad you Stayed FI and with Stillen :)

:wtf2:

Built motor with a Stillen kit???? Lol dejavu.

Kind of an odd question since the Stillen SC is not on the high end of the power equation. I'd understand if we were talking about a 600whp TT...

And there is the problem right there.

I'm not seeing the problem. Plenty of people run high boost. Im at 12 lbs too. No problems at all.

My question is has the tune been altered when boost is varied between 8-12lbs

And 12, imo, is in the upper range of what I would consider a reliable setup with stock internals. Maybe you are lucky, who knows. All We know for sure is that someone else had rod failure at the same boost that you are running.

Someone also mentioned another failure, I wonder what boost he was running...

The amount of boost that's safe to run varies based on what is making the boost, right? 12 psi on a Stillen sc isn't the same airflow as 12 psi on a turbo kit. Maybe we need to look at cfm rather than boost.

whatever boost keeps the a/f ratio in safe parameters?

12 psi is 12psi. Doesn't matter what form of induction u are running.