Omiotek

iTrader: (2)

Hahn catback is the best in my opinion..... Mpx one doesn't withstand the elements regardless of it being stainless......last one that came through our shop was corroded and rusty.

That the ldk with the mangled piston

Wired

iTrader: (3)

Agreed. I love the sound of my Hahn and I usually hate the sound of aftermarket exhausts.

bmartz1991

iTrader: (35)

Turbo XS exhausts are where it's at.

Piston3

iTrader: (2)

Yeah man that's the LDK shortblock piston. Multiple failures in the head. You'd think you could trust a head cleaning from a guy that builds $80k race motors but I guess not.

Looking at the greener grass im better off now. My turbo had some shaft play before we put everything back together last time. Took a look in it yesterday and it's way loose and machining its own path inside the housing. So at least I got a brand new turbo.

My concern now is a trans failure. 30,000 miles but I have no idea how long the previous owner was running that insane E85 tune. It doesn't grind and shifts perfectly so I'm hoping I'm ok for a good long time.

brianhud1991

iTrader: (2)

I just read every single page of this post and I must say, you are persistent. I would of threw in the towl after the first swap. I commend you on your progress, seriously.

Piston3

iTrader: (2)

Thank you. For more entertainment read the thread linked on the first page. This is only half the story.

TCBalt09

iTrader: (2)

Is the block or head salvageable?

You let your head guy know he sucks?

Piston3

iTrader: (2)

The head is worthless. It even chipped the cams. 3 followers broke off, seals and a spring just hanging out inside there. The block is salvageable if it could be bored .30 or so I'd say but does anyone even make bigger pistons for cobalts?

I have an LNF block too that needs a sleeve and piston on #4. 2 & 3 are new pistons and sleeves, and 1 is original at 130 compression tested so I wouldn't trust it. Not sure if I should just scrap it all or not.

The head guy has been at it for 30 years, personal friend of my Dad's and built all his winning race motors. Hard to know precisely what happened and point the finger at a friend.

Businesses don't like to give away money or replace parts for free. I made the decision a long time ago to buy parts instead of arguing over fault and buying a lawyer. I could have sued the dealership for selling me a car that wasn't setup to run gasoline but the lines between seller and buyer responsibility are a little blurry and not something I'd care to wager on.

TCBalt09

iTrader: (2)

I wouldn't personally buy the LNF block but the LDK would probably have some interest from the community. How's the LDK running? Have you taken it on any normal driving yet?

Piston3

iTrader: (2)

No regular driving yet. The PCM has to go back to ZZP to get adjusted for the LDK. There are some differences, like the 14% bigger injectors. A blip of the throttle and she goes to 10.0 afr lol. But I wanted to be able to start it obviously so I held off shipping it out until tomorrow. It's all boxed up and ready to go.

andrewcarr1993

iTrader: (5)

The Hahn exhaust I've always wanted.

ctn2mb

iTrader: (2)

My LDK doesn't have bigger injectors lol did you get the zzp ones?

Piston3

iTrader: (2)

No. Mine came with them. ZZP specifically told me I would need a re-tune for them. You bought a complete valve cover to oil pan LDK? How long ago and how's it holding up? Im praying it's bulletproof!

ctn2mb

iTrader: (2)

I had the first one they put in the cobalt, back in June of last year. I haven't had any issues with it thus far. Only at 450whp tho.

AcesNEights

iTrader: (4)

^^^ whats your setup?

Omiotek

iTrader: (2)

The zzp injectors are just opel injectors

Piston3

iTrader: (2)

Yeah doesn't this thing come out of an Opel Insignia?

ctn2mb

iTrader: (2)

im aware... but the LDK does NOT come with them... and currently I have a LDK/ZFR with a built 4.45 trans on E47.

Omiotek

iTrader: (2)

I understand......all I said was they were opel injectors....some guys think zzp builds these

ctn2mb

iTrader: (2)

Oh I'm well aware they don't make them, originally they kind of advertised it like they did but there definitely Opel ones.

alerosaint

that what she said..........sorry couldn't help it



put some vids of this bad boy up and runnin when you get everything sorted out. Im thinking about a LDK swap next year to replace my high mileage LNF

Piston3

iTrader: (2)

I gave the throttle a quick stab a couple times not even to the floor just to see and my afr would drop to high 9 low 10s. They probably wouldn't ask for my pcm back if they were not larger. I'm freaked out now though because if they trim fuel out thinking they are bigger....

Omiotek

iTrader: (2)

Btw I thought the ldk was in the insignia

Piston3

iTrader: (2)

That's what everything I've checked into points to. I looked up some part numbers and diagrams and it all looks to be a match.

I will have to email Matt and get this injector question settled.

6 hours is a very long drive in a car I don't trust. Given the load of crap I've been through would you be comfortable tuning this thing? Chicago is much much closer...

Omiotek

iTrader: (2)

we are booked solid through tthis month but I can probablly do base tune cheap and a dyno tune later.