Long story short....I've just installed a upgraded HTA73 Green turbo as well as various Curt Brown ported parts. In the process I have replaced the oil with new Amsoil fluid and new coolant.

I did a boost leak test (or attempted to..) and wasn't sure if I was doing it correctly so stopped about half way through. At this point I hadn't cranked the car up after installing the turbo, coolant lines, radiator, etc.

For the boost leak test I hooked up a home made adapter to the turbo inlet and tried to pressurize the system to around 25PSI. I had the regulator set on my compressor to 20PSI at the start and gradually raised it to possible 60 (maybe worse case 90? PSI). I didn't see the boost gauge increment at all from 0 so I stopped the test and figured I would do more research before attempting again.

Since then the car has been driving great and making good power. Everything is fine drivability wise but after I drive the car and look under the engine almost directly below the oil pan I can see a few drops of liquid on the ground. At first I thought it was coolant from a loose coolant clamp on the turbo but now I'm thinking it may be something else.

Could I have messed anything up by over pressurizing the system during the boost leak test? If so would my car still drive normal and boost to 27-28 PSI making around 440whp on VirtualDyno?

Like I said everything drives and performs as expected except having a few drops of fluid on the ground. No puddles or anything.

I'm just very **** about this car and want to be sure that if I messed something up I can get it fixed and/or figure out what exactly is leaking. I will wash the car today once I'm off work and clean up the areas with wet fluid so I can examine later.

Thanks for any advice.

 

ok so ur gauge on the boost leak test didnt go above 0psig.... so how did u assume that you over pressured the system if it still reads 0psig?

have u tried redoing the boost leak test? i noticed when mine is at TDC it wont go pass 0psig. but when i rotated the crank by hand and then boost leak tested it worked fine.

check where the leak is coming from, i too just installed a new turbo and saw a small leak, its pretty annoying.

 

http://www.artofmanliness.com/2011/09/06/car-leaks/

 

New washer on oil drain plug?

 

First you need to determine what the fluid is, which should be pretty obvious what it is.

Drive with AC on? could just be condensation.

From there is it a mechanical boost gauge? The gauge should have most def moved as you pressurized the system.

Possible the line on the underside of the IM. Seen it many times

 

Ok - no one laugh.

I over torqued the banjo bolt feeding oil to the turbo originally and it snapped. I had to buy a new bolt (was like $14 bucks!) to replace it.

Being the cautious person that I am.....I under tightened it and oil was slowly dripping from that all the way down to the ground. I had a friend snug that bolt up (so I wouldn't break it again...) and all is well.

I feel like an idiot! Oh well you live and learn.

I've realized that the reason my AEM Digital boost gauge wasn't registering any PSI was because there was a small leak on the boost leak tester and it wasn't actually pressurizing the system. Oops

Mods can delete this thread if they want or leave it up for the others to laugh at.

PS: I did replace the washers and bolt from the block feeding oil to the turbo. Also replaced the gaskets/seals on oil return on turbo side and oil pan side.

 

I'll throw up a few pictures of some parts I've added to make this thread worth everyone's while...

 

And here's a picture I'll throw in. This thing is your friend. The $14 you spent for the broken bolt would have bought you 1/2 of this wrench.