Question about our Turbo System.

[towpro]

ON my new ranger I have a question about how does the truck bleed off higher than needed turbo pressure?
does it have a waist gate, or does it dump the excess pressure to the atmosphere?

The reason I ask:
Under normal driving I never hear anything different than normal engine sounds, but at 200 miles I only leaned on it once or twice.
but yesterday I hooked a 3000 lb boat to the back. Coming home I had to jump on the throttle to get around a car idoing 30 in a 55mph zone and I let the Auto decide when it was time to shift. As the RPM climbed the engine makes a strange sound that made me think about a boost pressure leak. But the performance was still there. the rest of the trip I found that even crusing I could press the throttle until a point that this noise would start again, and as I let off on throttle it would disappear.
a quick look and I did not see any boost hoses popped off (used to happen on one my diesel trucks I modified). I took it out today empty and could not duplicate the noise.
Does this system dump excexx pressure to atmosphere or does it have a waist gate that opens the inlet to outlet, or is it vulnerable vain turbo?

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[D Fresh]

We have both a wastegate, exhaust side, and a BPV, inlet side, to release excess pressures.

The factory BPV is fairly silent. You were probably just hearing the turbo spool.

 

[Doc]

ON my new ranger I have a question about how does the truck bleed off higher than needed turbo pressure?
does it have a waist gate, or does it dump the excess pressure to the atmosphere?

The reason I ask:
Under normal driving I never hear anything different than normal engine sounds, but at 200 miles I only leaned on it once or twice.
but yesterday I hooked a 3000 lb boat to the back. Coming home I had to jump on the throttle to get around a car idoing 30 in a 55mph zone and I let the Auto decide when it was time to shift. As the RPM climbed the engine makes a strange sound that made me think about a boost pressure leak. But the performance was still there. the rest of the trip I found that even crusing I could press the throttle until a point that this noise would start again, and as I let off on throttle it would disappear.
a quick look and I did not see any boost hoses popped off (used to happen on one my diesel trucks I modified). I took it out today empty and could not duplicate the noise.
Does this system dump excexx pressure to atmosphere or does it have a waist gate that opens the inlet to outlet, or is it vulnerable vain turbo?

Sounds like you were building boost against a lugging engine, try pulling it to sport mode when you pass pulling 3000 lbs, that way you will have an appropriate downshift.

 

[towpro]

yes, it was building boost against a lugging engine. But having driven Cummins since 1998.5 its a habit that might be hard to break . But still learning. I did have a gasser turbo in the late 80's. I used an buick 3.8l draw through 4barrel turbo system top end on an Buick "odd fire" v6 bottom end and dripped it into a Chevy Monza 2+2 with a 5 speed manual transmission. Even had to cut my own pilot bushing because that block was never offered with a manual trans.
It used to eat 5.0's every chance it got on the street .
man I miss that car, but I sold it when I "grew up" and got my first ranger around 1987.

 

[D Fresh]

yes, it was building boost against a lugging engine. But having driven Cummins since 1998.5 its a habit that might be hard to break .

I try to refrain from putting a load on her under 2k rpms. Quite hilly around here so I use that as an excuse to drive in Tow or S the majority of the time. If I get caught out not paying attention a hard stab of the right foot will get her down a gear and rpms up quickly. A more level headed, smooth, light roll onto the throttle which may work for other engines can lug and predetonate on a GDI turbo engine.

But still learning. I did have a gasser turbo in the late 80's. I used an buick 3.8l draw through 4barrel turbo system top end on an Buick "odd fire" v6 bottom end and dripped it into a Chevy Monza 2+2 with a 5 speed manual transmission. Even had to cut my own pilot bushing because that block was never offered with a manual trans.
It used to eat 5.0's every chance it got on the street .
man I miss that car, but I sold it when I "grew up" and got my first ranger around 1987.

Now that sounds like a hoot!

Once you're done with break in just drive your Ranger like you hooned that Monza. It'll be happy for years.

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