Turbo time!

xjtony

Well-Known Member
Location
Grantsville, Ut
So the turbo on the Charger leaks oil.... bad. James Bond smoke screen bad. Luckily I've been collecting parts so I have a good T1 turbo that I took out of the Laser. Put a new exhaust housing on due to broken bolts that i don't feel like drilling out right at the moment
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Still needs a little clean up, but it'll do the job for now.

The difference between the T1 and T2 turbos on these cars is the EGR valve on the earlier T1s. The T2 don't use the EGR.

The one in the car will go out to be rebuilt.
 

TurboMinivan

Still plays with cars
Location
Lehi, UT
BOV from an Eagle Talon installed in the Laser. Makes cool turbo noises now 😎

That's a good BOV--it opens quickly and flows a decent amount. If (when?) you decide to run 20+ pounds of boost, I can show you how to modify the valve (they start leaking at that point).
 

xjtony

Well-Known Member
Location
Grantsville, Ut
That's a good BOV--it opens quickly and flows a decent amount. If (when?) you decide to run 20+ pounds of boost, I can show you how to modify the valve (they start leaking at that point).
So now that I have the Charger this car will stay at the boost level it's at right now. It'll still get a rebuilt engine with better rods, and exhaust and all that good stuff, but the Charger will be the racecar. The Laser is a great daily, and 15 psi is plenty for the street.
 

TurboMinivan

Still plays with cars
Location
Lehi, UT
The Laser is a great daily, and 15 psi is plenty for the street.

On my Caravan, I ran 18 psi for years because that was as high as I could go without detonating on Utah's 91 octane pump gas. Later, I installed a solenoid/toggle switch setup and created two-stage boost control. The LO setting was 18 psi, and the HI setting was whatever I wanted to run at the strip that day (with some 100 octane gas mixed in). I gradually went higher and higher (a pound at a time), but ultimately never went higher than 24 psi before I stopped racing the van. Ah, glory days.

BTW: with stock electronics, 15 psi is a good stopping point. You've just crossed the limit of the MAP sensor (which will already need a zener diode to prevent boost cutout at that point), and you are right at the limits of the fuel supply (depending on which injectors and what fuel pressure you are running).
 

xjtony

Well-Known Member
Location
Grantsville, Ut
Yeah that's why I'm leaving it where it is. At 15psi it's not hit the overboost yet, and my AFR gauge still reads full rich. I will put a Walbro 255 fuel pump in the car when this one dies though.

The Charger is a different story. I still don't know what PSI the Charger was running at. The extra injectors are set to come on at 15 PSI. Once I get it running right I'll put a few gallons of race gas in it and see.

I have the old turbo off. The center seals were leaking into both the exhaust and compressor side, it's a mess. The good turbo will go on tomorrow (it's on now but has to come back off due to me screwing up a 3 inch long hose). Hopefully i can start driving it around some this weekend.
 
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