smittybronco Posted April 22, 2009 Share Posted April 22, 2009 Hey eveyone, I have a question about a turbo i have. It is supposed to come off of a 94-02 mack truck. Its a S3BL-090 model number P/N 631GC5140M2X S/N C0895 056 R9 I am tryin to find the specs on it. Also tryin to find out how much the max boost is for that turbo. Any help will be greatly appreciated. thanks Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/ Share on other sites More sharing options...
HK Trucking Posted April 23, 2009 Share Posted April 23, 2009 That part # sounds familiar, I believe I bought one of those a few years ago.I'm gonna go way out on a limb and say E7 350 application. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34259 Share on other sites More sharing options...
Mackpro Posted April 23, 2009 Share Posted April 23, 2009 I found 5140MX and 5140M3X but no 5140M2X . The two I did find were for 325-350 HP VMAC engines. Boost pressures for these engines were any where from min 15psi to max 28psi. Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34282 Share on other sites More sharing options...
modblaster Posted April 24, 2009 Share Posted April 24, 2009 I found 5140MX and 5140M3X but no 5140M2X . The two I did find were for 325-350 HP VMAC engines. Boost pressures for these engines were any where from min 15psi to max 28psi.how much psi a turbo for e-tech 460-490???my e-tech 400 has 32 psi Quote HIGH TORQUE INJECTORS 20% Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34305 Share on other sites More sharing options...
Mackpro Posted April 25, 2009 Share Posted April 25, 2009 how much psi a turbo for e-tech 460-490???my e-tech 400 has 32 psiFor a 1999-2000 Etech 460 and 460XT(490HP) the Mack tune-up book says 27-35psi. The 460XT is the exact same engine/turbo/injectors just different download and a 100 Ftlbs more torque. Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34356 Share on other sites More sharing options...
fjh Posted April 25, 2009 Share Posted April 25, 2009 For a 1999-2000 Etech 460 and 460XT(490HP) the Mack tune-up book says 27-35psi. The 460XT is the exact same engine/turbo/injectors just different download and a 100 Ftlbs more torque.The 460 with xt file will produce 40 psi on a cold day and We had seveal customers CLs that would hit 40 consistantly!It was quite common for the compressor wheels on these to pop in half ,that problem has since been repaired thou! Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34357 Share on other sites More sharing options...
Gambi80 Posted April 26, 2009 Share Posted April 26, 2009 The 460 with xt file will produce 40 psi on a cold day and We had seveal customers CLs that would hit 40 consistantly!It was quite common for the compressor wheels on these to pop in half ,that problem has since been repaired thou!40?? Damn, my 427 only pulls a consistant 32lbs. When I have the passenger window down and I'm on the gas, the turbo makes a sound like a police car siren (?)...in addition to the normal turbo whistle. I don't know how else to describe it. Quote Ever wonder how a blind person knows when to stop wiping? Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34368 Share on other sites More sharing options...
HK Trucking Posted April 26, 2009 Share Posted April 26, 2009 40?? Damn, my 427 only pulls a consistant 32lbs. When I have the passenger window down and I'm on the gas, the turbo makes a sound like a police car siren (?)...in addition to the normal turbo whistle. I don't know how else to describe it.Check for a boost leak in the CAC, piping, or boots.That would explain both the "siren" sound, and the low boost pressure. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34371 Share on other sites More sharing options...
fjh Posted April 26, 2009 Share Posted April 26, 2009 Check for a boost leak in the CAC, piping, or boots.That would explain both the "siren" sound, and the low boost pressure.Also Depending on where the compressor is plumbed in check the compressor inlet tubes . Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34376 Share on other sites More sharing options...
bts-4120 Posted April 26, 2009 Share Posted April 26, 2009 40?? Damn, my 427 only pulls a consistant 32lbs. 32 is about what my 427 pulls, how much boost are we supose to have I thought the computer started cutting the power at 33 pounds Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34380 Share on other sites More sharing options...
Gambi80 Posted April 26, 2009 Share Posted April 26, 2009 Haha...it's hard to describe the sound it makes. More like if you whistle with your lips at a constant low(er) tone. I guess you'd have to ride along to get the idea. Reason I asked is because my dad used to tractor pull his regular farm tractor...just cranked up the farmer screw...and the stock turbo on the JD made a helacious scream. It ran like a raped ape, but he claimed the turbo was bad.And I thought the 427 was supposed to produce 24-32lbs...? Quote Ever wonder how a blind person knows when to stop wiping? Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34413 Share on other sites More sharing options...
modblaster Posted April 26, 2009 Share Posted April 26, 2009 For a 1999-2000 Etech 460 and 460XT(490HP) the Mack tune-up book says 27-35psi. The 460XT is the exact same engine/turbo/injectors just different download and a 100 Ftlbs more torque. thank's you! great info!! Quote HIGH TORQUE INJECTORS 20% Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34417 Share on other sites More sharing options...
Mackpro Posted April 27, 2009 Share Posted April 27, 2009 Haha...it's hard to describe the sound it makes. More like if you whistle with your lips at a constant low(er) tone. I guess you'd have to ride along to get the idea. Reason I asked is because my dad used to tractor pull his regular farm tractor...just cranked up the farmer screw...and the stock turbo on the JD made a helacious scream. It ran like a raped ape, but he claimed the turbo was bad.And I thought the 427 was supposed to produce 24-32lbs...?All the Mack tune-up spec books I have looked at "1996-2004 "says 33 psi is about the max boost pressure you should see for a 427 HP engine. I think the ASET "AC' engine might be higher but the ASET "AI dump truck" version should still be around 33 max. I would say anything above 30 psi is good. However I have seen and drove trucks that put out more than what the specs say. I have seen alot of blown intake manifold gaskets on 99-03 engines( mostly around #1 cylinder) and air compressor intake piping problems that leak boost pressure. Quote Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34453 Share on other sites More sharing options...
Gambi80 Posted April 28, 2009 Share Posted April 28, 2009 I have seen alot of blown intake manifold gaskets on 99-03 engines( mostly around #1 cylinder) and air compressor intake piping problems that leak boost pressure.I've got the air compressor intake off the intake manifold. How do I rig it up so the compressor intake is between the air filter and turbo..? I've had this problem in the past, fixed it and went from 24 max to 32+. Quote Ever wonder how a blind person knows when to stop wiping? Link to comment https://www.bigmacktrucks.com/topic/9144-mack-truck-turbo/#findComment-34468 Share on other sites More sharing options...
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