Help - Search - Members - Calendar
Full Version: High Boost Stock Turbo?
DSMCentral > Forum > General Talk
turbohcar
How far have you guys pushed your stock turbo (EVO or DSM)?


Just yesterday I took my car out and took it for a drive to see how well it was running. I never got above 3/4 throttle and never went balls out. Even with the new 2.5in IC setup, spool is amazingly fast for the little 14B. I hadn't had a chance to bolt up the new exhaust since I ran out of sawzall blades (I have to cut off the old downpipe bracket) so it was on the car, just not bolted up. First gear yielded 10psi around 3500rpm, Second came quick with 15psi around 4000, and Third.... Third was too fast to count. Third came with 23psi around 4500 rpm by total accident. At that same moment I went over a small hill and heard a CLUNK! I thought for sure it was the sound of a turbo inhaling itself. Limped it back home being very careful, I pull it into the garage and take a look. Thank God! the clunk sound was confirmed by the same flat spot in my downpipe. Just by chance I had gone over the hill at the same time I hit the 23lbs and heard the downpipe scrape the ground. Downpipe and turbo are fine and I should be out driving it today, Woohoo! Now it's time to get that manual boost controller fixed.
turbohcar
Sounds like a plan. Last year my car was building 18lbs of boost on the stock IC, stock lower IC pipe, and stock boost controller. Don't ask me how, but for some reason it liked 18lbs on the stock setup. 18lbs should be a substantial amount with this setup though. A new turbo is in the works for this summer.
Mitsu 77
You bring'n her out to the cruse tonight?
The Iron Goat
I'm curious to see what boost I'll be able to produce with this front mount. 18 would be cool, but if that's the top, I'll definitely be looking for a bigger turbo soon. Perhaps something in a fashionable 35 waist?
turbohcar
^^^Exactly, what cruise? I might, provided it doesn't throw a temper tantrum.

EDIT: To add to the above post, I took the car out again just now and it seems that even with the boost source connected directly to the wastegate it still wants to make 11psi at WOT (which I believe the stock wastegate is supposed to open at 5psi).

I'm not terribly concerned with that though. It's more that the BOV doesn't sound like it's opening long enough. Asiankid had some shaft play problems with his 16G with this same BOV so I'm not so sure that it may have been the source of his problems. I'm thinking of cutting the internal spring to reduce the tension on the cylinder so that it allows the valve to open easier.
turbohcar
I officially hate this F#ing car!!!!! Currently, bits of custom driveshaft and transfer case are scattered across the backroads of central Illinois. Why? I don't know. Did a couple WOT pulls just to make sure she's running up to par. No knock evident save for one or two counts at low throttle. First pulls hard spiking boost at 18psi!!! just on the wastegate actuator. Second pulls again and halfway through all the sudden there's this loud band. Not like a shotgun blast, more like a supersonic jet breaking the sound barrier. I look behind me only to see chunks of flying debris and a blue plume of smoke. I figured the worst. I listened and watched in the rear view waiting to see pistons jumping around on the pavement. No........no pistons..... just chunks of metal. Wait!! the engine is still running!!! YES! As I coasted the mile home I thought about what I had to do. As soon as I came to a stop in the driveway I was desperate to see the carnage. I looked under the car only to see the new custom driveshaft completely missing and the back half bouncing around on the ground. The back half of the transfer case is completely missing as well. GONE.... Hasta Lavista baby. I'm tired of messing with this pile of crap. I'm tempted to send it to the crusher. I hate my car.

Mind you this is a brand new (non-leaking) transfer case and a new custom driveshaft that had the yoke filled with silicone and the donuts repaired. I have no idea what made either of them fail.
BudmannG
Hey Bret sorry to hear that shit happened. I got a extra transfer case if you need it. I will gladley let you have it if you come and pick it up.
natedogg
I feel for ya brother. We've all been there. sad.gif
AWD DSM 1
I wonder if the driveshaft was out of balance.... might explain it grenading the transfercase like that.
The Iron Goat
Maybe the xfer case failed, dropped the driveshaft, and the shaft pole vaulted into the ground causing it to shatter. unsure.gif
SCCA Stang
Damn..... good luck getting her back on the road, unfortunately I don't have any parts to help you out.... but I do wish you the best of luck.
black92_tsi_awd
Don't let it take over! Fix it and get it back rolling!

Did you keep the original driveshaft? Throw it back in with the transfer case from Spy or Bud and have at it again.

Might want to invest in a driveshaft hoop.
JBone
Truly sorry to hear about the t-case grenading like that, dude.

You stated earlier about boosting at 18psi on just the WG. I would be VERY leary about that, too. It's a 10 lb spring. If it's opening at 18, then something's up with that. Also, you were saying something about the BOV. Change those both while you're doing your rear end repair (shut up).

Good luck, dude. You've come this far. Don't stop now.
Turbo Tension
Been thar done that x 5
turbohcar
Thanks for all the kind words guys. I picked up the driveshaft and transfer case from Dan. It should be back on the road this week sometime and ready for sale.

JBone, I believe it is opening at 10psi because it jumps to 10 immediately and spikes to 18 quickly. It was doing this on the old setup as well with the stock boost controller. 18psi is fine because it's got plenty of fuel for it and it's not over-extending the turbocharger. Not only that but it's not knocking at all.
JBone
sweet!!! biggthumpup.gif
black92_tsi_awd
You got it back together....WHY SELL!?!?!? sad.gif
Mitsu 77
What are you going to get if you sell it? Another 1g, or a 2g, or non DSM?
The Iron Goat
QUOTE (black92_tsi_awd @ Apr 30 2006, 08:51 PM)
You got it back together....WHY SELL!?!?!? sad.gif

He's selling out of fear of the Goat. Period. In fact, he was simply thinking about the Goat when he was driving, and the car self-destructed from pure terror. Go ahead and run along, Brett. I understand. wink.gif

Sorry to hear of your misfortune, and I'm glad Dan was able to help you out. Let us know if there's anything else you need.
black92_tsi_awd
I figured he was afraid of the Black Golfball...but I didn't want to bring it up wink.gif
AWD DSM 1
You're all wrong... it's the empty green carcus in my garage.... trust me, it's scary. ph34r.gif
NOMIEZVR4
Hey spy, yours isn't the only GS-T that builds insane amounts of boost at low rpms.. tongue.gif

My baby gets full boost, (right now its set at 10..stock BCS) right around 2700rpm's...and she pulls to redline like no tomorrow...mind you this is still on the 14b..

I just received my intake pipe and I can't wait to see what type of difference it makes..im sure it will only help..

Hey you know what, Im calling you out. Thats right. The next time I come down south, I want to run the FFGS-T and IF I beat you, then the title of the factory freak GS-T will officially belong to me. biggthumpup.gif

Im going to be making a trip sometime this summer to pick up my leather seats from Travis at KOUmotorsports..how for are you from there? Maybe we could setup a race from a 35-40mph roll..hows that sound? cool.gif

Nomie
NOMIEZVR4
Oh yea and just in case you were wondering...here are my mods.. biggthumpup.gif

90 GS-T
-K&N
-Intake & UICP
-MBC
-Spearco SMIC
-ACT 2100
-Turboback
-Prothane Motor Mounts
-Walbro 190

91 exhaust cam...not yet installed
turbohcar
Scared? Yes I am. Scared that this thing has sno-balled out of proportion and I've gone too far with it. Too many mods and all it does now is break when I try to push it.

That and I'm young. Too young to be spending all this time on one car for the next five years. I want something different just to be different and have a variety of vehicles while I'm young enough to do it. That is, before I become an old fart with a child or two like some of you old farts!! So Yes Mitsu, it will be Non-DSM for this one. Maybe I'll come back to them maybe not. But I will guarantee that if I do it'll be in nothing less than an EVO, but that's a few years down the road.

BTW, the FFGST is freakisly fast for a 14B car!!! It's the only car I've ever known to spin the tires while going downhill at a steep decent!!!!! Goats, Golfballs, and Freaks, this next one should prove to be slower but more reliable. Mods will be kept to a minimum (intake/exhaust/suspension) and everything else will be stock. Something I can drive more than 30 days in 3 years!!!
turbohcar
QUOTE
The car builds 20 psi by 2500rpm...
It will throw you in the seat and keep you there.


^^This part I can vouch for personally! The butt dyno says it's faster than my car from a roll. Who knows from a stop.
turbohcar
Lowered sale price. Get it gone or I'm parting it. Nomie, this would be an easy ticket to beat Spy. All it needs is a good tune and you're there.
NOMIEZVR4
Ouch..I asked for more than I could chew.. tongue.gif hahha..lol

I have a FWD, so its going to be definitely from a roll..35 or 40mph sounds good...

I was pressure testing my car and found a huge leak at my dejon J-Pipe that I purchased from a friend of mine and I also have two small leaks on the throttle body..BISS screw and the TPS sensor..I haven't gotten a chance to check the injectors, intake manifold, etc...but im working on it. wink.gif

I will be heading down to Travis' possibly next month?? Im in the process of moving right now so things are a little tied up...this is finals week as well..lol

But here is the big question, Spy, how far are you from Travis' shop? Im already going to kill about 2.5-3 hours coming down there so if we could meet at the shop, hang out, etc..it would be easier for me. Each time I come down, Travis and I chit chat endlessly..it would be nice to have you along as well biggthumpup.gif

Keep in mind that this is all in fun..Oh yea im going to bring a video camera as well.. biggthumpup.gif

Talk to you soon,
Nomie
NOMIEZVR4
Argh!! That sucks!!! Darn..maybe some other time..lol smile.gif
natedogg
QUOTE (NOMIEZVR4 @ May 4 2006, 08:45 AM)
But here is the big question, Spy, how far are you from Travis' shop? Im already going to kill about 2.5-3 hours coming down there so if we could meet at the shop, hang out, etc..it would be easier for me. Each time I come down, Travis and I chit chat endlessly..it would be nice to have you along as well biggthumpup.gif

ohmy.gif laugh.gif

I should add, "That'll be a cold day in hell."
AWD DSM 1
Very cold...
The Iron Goat
QUOTE (natedogg @ May 4 2006, 09:21 AM)
ohmy.gif laugh.gif

I should add, "That'll be a cold day in hell."

Why? What happened between Dan and Travis?
natedogg
QUOTE (The Iron Goat @ May 4 2006, 09:53 AM)
QUOTE (natedogg @ May 4 2006, 09:21 AM)
ohmy.gif  laugh.gif

I should add, "That'll be a cold day in hell."

Why? What happened between Dan and Travis?

Do I detect a hint of sarcasm or do you really not know? If not, I'm sure Dan will be more than happy to describe it to you in a PM.
natedogg
Haha, I just noticed Goat's avatar! Nice! biggthumpup.gif
natedogg
QUOTE (NOMIEZVR4 @ May 1 2006, 08:02 PM)
Im going to be making a trip sometime this summer to pick up my leather seats from Travis at KOUmotorsports..how for are you from there? Maybe we could setup a race from a 35-40mph roll..hows that sound? cool.gif

Nomie

rolleyes.gif
KOUin3
A dsm speciality shop.
I'm here to support your dsm needs.
The Iron Goat
QUOTE (natedogg @ May 4 2006, 10:31 AM)
Haha, I just noticed Goat's avatar! Nice! biggthumpup.gif

It needs some work, but it'll get there.

I just like playing dumb to further twist the knotted rusty spear that's in Dan's side about the whole thing. I'm an ass.
scrapin_frame
i got my 3" exhaust done... i took off my mbc. running a line directly to the wastegate i am boosting at 17-18psi
BudmannG
QUOTE (scrapin_frame @ May 5 2006, 08:05 PM)
i got my 3" exhaust done... i took off my mbc. running a line directly to the wastegate i am boosting at 17-18psi

Why did you disconnect the mbc? I thought that was bad on the turbo. ohmy.gif
scrapin_frame
nothing wrong with running direct wastegate. i dont have a bcs anymore.. i took off my mbc while iw as doing boost leak tests and never put it back on
turbohcar
Mine's doing the same thing. Run the signal line directly to the wastegate and it sees 18psi. I can't explain it.
This is a "lo-fi" version of our main content. To view the full version with more information, formatting and images, please click here.