Compound Twins Explained For Non-Gearheads....

LOGAN · 10-22-2007, 02:26 AM

non-intercooled

intercooled

RED is the exhaust.
BLUE is the air.

air enters the atmosphere turbo (the larger of the two) and is fed into the engine mounted turbo (the smaller of the two), then directed into the engine or the intercooler if the truck is intercooled and then into the engine. the technical name for this setup is "compounded turbos", most people just call them twin turbos or just twins, its just easier.....

hope that helps some of the new "non-gearhead" guys with understanding how twins work.

i hope that picture works ok, i drawed it in paint....i didnt make all of it red so people could make sense of it, that is why i used pink for the turbo's and maroon for the exhaust piping, same with the blue.

__________________
1990 D250, RC LB, 2WD, 130,000 MILES, 727, NOT ENOUGH ROOM TO FIT MODS
ONE OF THE FEW, THE PROUD, AND THE VE POWERED

BBRam · 10-26-2007, 02:24 PM

Thank you Logan, another Fine Job. Moved to the General Tech Article forum. :thumbsup

__________________

03-3500, DRW, QC, 4x4, R850 BD Twins, BD IC Boots, BD Billet Flexplate, Full Billet DTT Trans, Lockup Switch, SMARTY TNT-R / TS MP-8, Wicked Diesels Eliminator Fuel System & Coolant Bypass, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, Mag-Hytec, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. (R/T .021, 60' 1.76, 1/4 ET 13.03 @ 102.05 mph)

July 2009 Cummins Forum ROTM Winner

95 1500 Sport 2wd Cummins Drag Truck under construction.

"In search of the Magic Dyno"

10-22-2007, 02:26 AM	#1 (permalink)
LOGAN Cummins Fan/ TECH SPECIALIST Join Date: Aug 2007 Location: OHIO Posts: 130 Thanks: 1 Thanked 0 Times in 0 Posts LOGAN's Truck Pics	Compound Twins Explained For Non-Gearheads.... non-intercooled intercooled RED is the exhaust. BLUE is the air. air enters the atmosphere turbo (the larger of the two) and is fed into the engine mounted turbo (the smaller of the two), then directed into the engine or the intercooler if the truck is intercooled and then into the engine. the technical name for this setup is "compounded turbos", most people just call them twin turbos or just twins, its just easier..... hope that helps some of the new "non-gearhead" guys with understanding how twins work. i hope that picture works ok, i drawed it in paint....i didnt make all of it red so people could make sense of it, that is why i used pink for the turbo's and maroon for the exhaust piping, same with the blue. __________________ 1990 D250, RC LB, 2WD, 130,000 MILES, 727, NOT ENOUGH ROOM TO FIT MODS ONE OF THE FEW, THE PROUD, AND THE VE POWERED

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10-26-2007, 02:24 PM	#2 (permalink)
BBRam Super Administrator Join Date: Jan 2006 Location: Chelsea MI Posts: 23,419 Thanks: 173 Thanked 248 Times in 162 Posts BBRam's Truck Pics	Thank you Logan, another Fine Job. Moved to the General Tech Article forum. :thumbsup __________________ 03-3500, DRW, QC, 4x4, R850 BD Twins, BD IC Boots, BD Billet Flexplate, Full Billet DTT Trans, Lockup Switch, SMARTY TNT-R / TS MP-8, Wicked Diesels Eliminator Fuel System & Coolant Bypass, Floor It Stage 3 CP3 & Rail Cap, BIG Stix's by FTE, ARP Head Stud's, Springs, Fluidampr, ATS ARC-FLOW, Mag-Hytec, AFE, Boost, Drive Pressure, Pyro, Fuel Pressure, Tran's Temp, Rail Pressure Gauge, GDP Ladder Bars, GrandRock 7" Miters. (R/T .021, 60' 1.76, 1/4 ET 13.03 @ 102.05 mph) July 2009 Cummins Forum ROTM Winner 95 1500 Sport 2wd Cummins Drag Truck under construction. "In search of the Magic Dyno"