BoostedLS1CrownVic

twin turbo on stock LS1 block, thoughts couldnt build any boost, yet i did have a small leak , but i assume i should have built some boost ,Why wouldnt it, they both do the same thing, spool up and build boost, and flow into 1 pipe , so unless there not building boost because of they are to large for the stock LS1 not producing enough air flow from the exhaust, i cant figure out what else it is causing the issue for not building boost, we did notice that when we removed the exhaust outlet on the turbo since i had full straight pipes all the way back that the turbos can finally be heard spooling or did start to spool but still no boost, the gauge will read -20 when start up and go to 0 when i hit the gas , on the way home from the dyno i just said **** it and got on it a few times,,,, turbos spool,,, bovs release.. so i dont get it
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(1st turbo specs on pass side)
T70 Turbocharger!!
Turbine Turbocharger
Oil cooled only
6 blade propeller
Compressor Specs :
4" Compressor Inlet
2.226" or 56.55mm Inducer
2.552" or 74.83mm Major
Compressor .70 A.R.
Compressor 75 Trim
M14 Compressor
Turbine Specs :
Twin Entry Type
11 Blade Type
58.18mm Exducer
Turbine .84 A.R.
Turbine 60 Trim
2.894 " or 73.50mm Major
2.275" or 57.78mm Minor
(2nd turbo on drivers side)
Header:
1.65" Runner Tube
2.5" Cross Header Pipe
3" Exhaust pipe
T70 Turbo and Wastegate:
Standard T4 Flange to Manifold
0.70 A/R Compressor, 0.96 A/R Turbine
Big 4" Air Inlet, 2.5" Air outlet
3" V-Band Exhaust
Wet Floating Bearings
Oil Cooled
38mm 6 psi Wastegate

also 2 cheap ebay BOVS

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iTrader: (1)

So I'm taking it there's no boost? (sorry had to) Also, if you look at your keyboard, between the comma (that you apparently love) and the slash, is a key with a dot on it. It's a period, try it! NOw for the car, BOV springs too weak and opening? Audio is pretty horrible in the video, but it sounds like you're bleeding off the boost as soon as it starts to spool up.

BoostedLS1CrownVic

Sorry for that with the typing. Yes there is a leak but the tuner guy said he didnt feel it should all bleed out of the leak and that it should still build some boost. So in the next day or so i will close up the leak and see if that helps at all. But trying to see if there is anything that i might have missed.

oscs

iTrader: (19)

Holy run on sentence batman!

coltboostin

To clarify-you are running 2 completly different trubos, correct?


Im not sure if that would, or would not work. I could argue for either LOL-but I hate it!

3 window

iTrader: (1)

I didn't even realize they were two different sizes. I just thought the list was a run on too! Lol

BoostedLS1CrownVic

i take it no one has ever ran 2 different turbos before ?

CameronVic

iTrader: (5)

Hey lets critique this guys grammar instead of offer suggestions that may help him find his issue.

coltboostin

Do you have one to offer?


Im honestly currious if 2 completely different turbos would work as twins. In my head, it just wont work. But at the same time I dont know wnayone who has tried it!

3 window

iTrader: (1)

Come on Vic, I asked about the BOV springs. He said he's got a leak so I guess we have to wait and see what happens after he fixes that.

eviltwin_1987

iTrader: (18)

On the compressor outlet, check to make sure there is no open fitting locations. I know it might sound dumb but I have seen it more than once.

slowride

iTrader: (3)

Pretty sure that would cause some imbalance in the engine combustion process. That is also hard on the crankshaft due to vibration, but to what extent you got me