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| Thread Details Posted by Onebadtruck, this thread has received 14 replies and been viewed 529 times. |
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02-01-2008, 09:00 PM
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#1 |
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Blowoff valves
I know on cars ( mustang's, camaro's) that have turbos on them run BOV's Y don't we? I know all about compressor surge and that it's good to have a bov on a car. But what about on a diesel truck. Hell cars most of the time only make 12-16 psi (talking street NOT the Strip) where we make 35-45 psi. So y don't we run them?:shrug:
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2001, 2500 tow rig.( BHAF with AFE turbo tube, BD AUX pump, 4" turbo back pipe, Super Phat Shaft turbo, Comp Box, SMARTY, Gauges { egt, boost, tranny}, Fully built Tranny, New BD-VP44, 40HP injectors Painted Valve cover) Looking to smoke everyone  : 93 YJ Juggy rock crawler ( UNIMOG axles with lockers F/R, Atlas 4 speed T-case full body armor, 14" fox coilovers F/R, 42" Pitbull tires on 20" beadlocks). |
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02-01-2008, 11:47 PM
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#2 |
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2nd Gen Guru
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There is a few people producing them for diesel too...
http://www.bd-power.com/ram/product....boGuard&tt=ram
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Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser 116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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02-02-2008, 09:51 PM
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#3 |
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I'm not really sure why they aren't more common :shrug: They are good to have but BD is about the only one who makes one and they are a little spendy
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My name's Derek and this is my ride: Singles Club Member #58 98 Dodge 2500 Motor: 12 valve, BHAF, 4K GSK, O-ringed head, .020 over HG, studs, Modified AFC, DDP4 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing, Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp) 83 Chevy K20 with turbo 6.2 Sold It's not what you buy, It's what you build
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02-03-2008, 03:43 AM
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#4 | |
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Quote:
They are not on diesel engines because diesel is not a throttle operated engine, another words no throttle body. a diesel engine meters fuel, while a gas engine meters air. Gas engines need the blow off valve to get rid of the exrta pressure between the turbo and the valvebody when it closes. Thats why there is no need for one on a diesel. |
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02-03-2008, 01:49 PM
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#5 | |
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Quote:
Still in all either way gas or diesel you can get turbo barking. I'm capable of doing it with my stock turbo now with just a Edge Comp. Turbo barking is the rushing of air back out the intake of the turbo when the throttle is dropped quickly. This backwards rush is enough to break turbo shafts at enough boost pressure. At any rate turbo barking is not good for a turbo...
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Michael Nelson - 2002 Dodge Cummins & 1996 Dodge Ram 5.9L Gasser 116K Miles On My VP44 - 4 Years of 2 Cycle Oil Diet! - Mixed at 128:1 Ratio - 25.3 MPG maxed out!
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02-04-2008, 02:05 AM
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#6 |
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Does anyone else make them for diesel trucks or will any bov work?
I have been looking for one because some say that the HX40 I just installed have problems snapping shafts and I don't want to buy another turbo. I just don't want to spend $700 on one when all these ricer guys get them for around $200. However most that I have found are only adjustable up to 20 psi or so.
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99 2500 dodge cummins, HTS auto trans, quadzilla/edge ez, edge stage 2 nozzles, HX40,special X pump, big line kit, custom dual filter intake, custom exhaust, holley blue, adjustable boost elbow, new intercooler boots, t/c lock up switch, suncoast t/c, leveling kit, new 285 bfg's, all the gauges. New TPS  SINGLES CLUB MEMBER #44 |
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02-04-2008, 04:01 AM
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#7 | |
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Quote:
some one needs to tell this to Ford cause my f-550 does this all the time. :ford
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2001 Dodge 2500 2wd reg cab CTD bolt action. Just put on new vp44 and lift pump.:dodge 2004 Ford F550 6.0 auto service truck with knaphide bed and 6000lbs autocrane (company truck) |
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02-04-2008, 04:33 AM
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#8 | |
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Quote:
Makes sense to me I believe we have a winner  :
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My name's Derek and this is my ride: Singles Club Member #58 98 Dodge 2500 Motor: 12 valve, BHAF, 4K GSK, O-ringed head, .020 over HG, studs, Modified AFC, DDP4 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing, Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp) 83 Chevy K20 with turbo 6.2 Sold It's not what you buy, It's what you build
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02-04-2008, 04:36 AM
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#9 | |
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Professional Amateur
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Quote:
I think it would be relatively simple to adapt one to any turboed engine with a little work
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My name's Derek and this is my ride: Singles Club Member #58 98 Dodge 2500 Motor: 12 valve, BHAF, 4K GSK, O-ringed head, .020 over HG, studs, Modified AFC, DDP4 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing, Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp) 83 Chevy K20 with turbo 6.2 Sold It's not what you buy, It's what you build
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02-04-2008, 05:00 AM
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#10 | |
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Quote:
I am sure of that, i was just stating that because gas engines have throttle bodies there is all that pressure from the turbo pushing against it and something has to be there to relieve the pressure. The only time i have ever heard of a blowoff valve on a diesel was on a truck that was in proffesional drag racing or tractor pulling from what i have seen from videos and read articals. Never seen one in person on a diesel. I know when my cousin had his Eclips 4cyl 5spd. he had an aftermaerket blowoff valve that replaced the factory one, and i know he liked taking it up newengland dragway. Other than that i don't know what types of requirements they are needed on. |
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