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#1 |
Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: Finally starting my Longhorn 4x4 conversion
TurboS? I like what you did with the T-case. Are you just going to plumb the oil pump externally for it?
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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#2 | |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#3 |
Registered User
Join Date: Jun 2009
Location: Puyallup, WA
Posts: 337
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Re: Finally starting my Longhorn 4x4 conversion
I'm still new to the diesel game. How much heat comes off the turbo when your egt gets high. The turbo seems a little close to the fiberglass hvac box. Love the build, wish I knew more about custom diesel building for my suburban.
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![]() 2005 K2500 Duramax (hauls the junk home) 1967 Chev C10 (hauls a$$) 1970 Suburban (Yukon XL 4 door) 1968 GMC 3/4 ton (sheetmetal only, chassis gone) 2005 Malibu (wife's car, still a Chevy) Project Family Hauler New Home for Chevys (Moved in and working) |
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#4 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Usually while regular driving exhaust temp gases are around 500-750*. While towing they are usually from 750-1150*. (The reading is taken before the turbo in the exhaust manifold, and usually is 250* less after the turbo.) On this truck I'm going to guess it will see 1200*+ bursts when I get bigger injectors. On my F-350, which I DD and tow with constantly, the turbo exhaust housing is literally 1/4" away frm the HVAC box, and it hasn't discolored or melted yet. (I've put about 30k on it in a year too.) This pic isn't very good, I'll get a better one tomorrow. If it gets too hot for the HVAC housing, I'll put a turbo blanket on it.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#5 |
Senior Member
Join Date: Apr 2004
Location: sw colorado
Posts: 2,720
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Re: Finally starting my Longhorn 4x4 conversion
i sure am glad you are making progress because i am at a dead stop. DD blew a head gasket thursday and my jeep is having EST issues. jeez...
that t-case looks all confused, but it looks like you should be able to fit 5" tube through there pretty well. i bet the HVAC housing doesn't even blink. a 1/4 of air is enough to really insulate the heat. if the exhaust housing on the turbo starts to glow then it might melt that sucker but if that is the case i think you have bigger problems. looking good sir Ryan |
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#6 | |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#7 |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
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Re: Finally starting my Longhorn 4x4 conversion
Hey hey, nice progress Ryan! glad to see you wrenching on this thing again.
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#8 | |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#9 |
Registered User
Join Date: Jul 2011
Location: Auburn ca.
Posts: 2,886
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Re: Finally starting my Longhorn 4x4 conversion
Looking good Ryan. You could also make a aluminum heat deflector with air gaps on both sides for the ac/heater..
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#10 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: Finally starting my Longhorn 4x4 conversion
It is looking good man, I have been watching this build waiting for updates, you are on your way now though.
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"He used to be a pretty nice feller, now he's a welder!" |
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#11 |
Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: Finally starting my Longhorn 4x4 conversion
Updates?
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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#12 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Oh, well, maybe........................................
![]() We've got piping boys! ![]() ![]() ![]() ![]() There is a second turbo in there. ![]() ![]() I was highly disappointed today when I tried to use my 7.3psd intercooler and it was too narrow to fit around the radiator. So I improvised and flipped a 2nd gen dodge one and it fit. But now I will have to modify my hood latch because the hood latch hits the intercooler. ![]() ![]() I got the water inlet almost done too. ![]() I still have to make the oil returns, install the oil feed lines, build a support bracket for the primary turbo, weld all the piping, and build an air inlet for the primary turbo. I also have to build a down pipe and fit the exhaust. It's going to be tight! It's coming together.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#13 | |
Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
Hate me yet?
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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#14 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
By the way, the top turbo is a HX40II and is 60mm. The bottom turbo is a HT60 and is 76mm. I'll modify the waste gate on the secondary turbo and set it to be fully opened at 25psi, which should net about 60-65psi boost total.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#15 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Say what?
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#16 |
Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: Finally starting my Longhorn 4x4 conversion
Liquid-To-Air intercooler between the turbos...
I don't know what your final use plan for the truck is, but here is a quick little story on why you should. When I had my 96 Chevy with the 6.5L on Propane, I knew a guy who had a 12v dodge with sequential turbos. He would not tow a trailer at all. He said he couldn't keep his EGT or engine coolant temp under control with a load on the engine. Well, one day while towing a trailer in my 96 I passed him on a grade. He didn't talk to me ever again. ![]() His truck could spank mine all over the place. but I could still tow with mine. Cat C15s run a cooler between the charge air side of the turbos and there are a lot of off-road cummins engines (QSK60 for eg.) that run coolers between the turbos. It makes night and day difference!
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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#17 | |
Registered User
Join Date: Nov 2008
Location: mitchellville, ia
Posts: 282
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
Air to water is not helpful in the majority of cases for multiple reasons on a street truck. For air to water to work properly there has to be a cooling agent, IE ICE etc. Running coolant from the engine is inneficient. When you consider the air temp coming from the turbo is 750* and a stock CAC/Intercooler can drop it down to sub 200*. If the truck was going to be a competition vehicle it might warrant an air to water. But unless you are pushing over 1000HP and high boost numbers it's not needed, or if you are running a big single. We built a compound turbo 12V that ran a 57mm charger over a 78mm charger with "435HP" injectors in it that could hardly make 1800* on the pyrometer at WOT. It would build 15psi of boost at 30mph under light throttle. EGT's can vary depending on setup, but properly setup compounds don't need an ATW setup. Air to water is great for larger single charges and helps them spool. Not to mention the pain in the ass it is to pipe in an interstage cooler. They also are not the cheapest option available. Cheap ATW is not recommended.
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1996 Dodge 2500 Ext Cab Long Bed P24V Cummins Turbo Diesel 5 speed 4x4
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#18 |
Junk Yartist
Join Date: Jul 2009
Location: Greeley, CO
Posts: 2,203
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Re: Finally starting my Longhorn 4x4 conversion
sequential... compound... sorry, bad habit. It was compound not parallel. My experience with light truck diesel with compound turbos was that dodge... and the 6.4L (don't laugh)
Being in my line of work I only get to work on unmodified diesel engines. I don't get to experience the performance side of the house... I just soak up everyone's knowledge and experience for when I decide what engine I want to run in my 70 Burb. So it is really cool to see and read your builds!
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-Jeremy YOU ONLY FAIL IF YOU STOP TRYING 70 Crew Cab Build Link 70 GMC Suburban 4X4 build thread 95 Yukon Daily Driver Rebuilding an NP205 |
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#19 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Not much more progress. I had to drive down to a dodge scrap yard to get a bracket for my hydros. I also picked up a used B&W goose neck hitch for it.
![]() I got my water outlet done. Just have to pick up an adapter for the radiator side of it. ![]() I installed my injection pump so I could install my injection lines, so I could build my cold pipe from the intercooler to the engine. The injection lines fit like crap for as much as they cost! ![]() ![]() ![]()
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#20 |
high-Tech Red Neck
Join Date: Feb 2008
Location: Livingston, MT/On my boat WA/BC/AK
Posts: 2,294
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Re: Finally starting my Longhorn 4x4 conversion
OH THAT IS FRIKING SWEET!
What kind of tubing do you use for that?
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"He used to be a pretty nice feller, now he's a welder!" |
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#21 | |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
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__________________
Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#22 |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
It's a good application on heavy equipment for cooling the charge air at normal levels. But for this, I'd have to have a unlimited supply of ice and a trailer with a cooler to refill it.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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#23 |
Chevy Enthusiast
Join Date: Jul 2009
Location: Canyon Lake Texas
Posts: 2,024
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Re: Finally starting my Longhorn 4x4 conversion
Awesome!
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Tony 1985 GMC K2500 restoration Project: Rust, White & Blue 1989 Chevy R3500 CC Cummins & 4X4 swap some day... 1989 Burb (D60, 14BFF, 12V, NV4500, NP205, 37" tires in progress) |
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#24 |
Still Learning
Join Date: Jul 2009
Location: Central Oklahoma
Posts: 10,108
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Re: Finally starting my Longhorn 4x4 conversion
Very nice progress Ryan. Keep it up buddy.
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#25 | |
6>8 Plugless........
![]() Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 17,140
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Re: Finally starting my Longhorn 4x4 conversion
Quote:
I know how you feel. This truck has been pushed out of the shop so many times I lost track. Hopefully soon it can be driven in and out. ![]() Thanks! Thanks. It's slow progress.
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Ryan 1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread 1972 GMC Sierra Grande Longhorn 4x4 1972 Chevy Cheyenne Super K20 Long Step side tilt, tach, tow hooks, AC, 350 4 speed 1972 C10 Suburban Custom Deluxe 1969 Chevy milk truck 1971 Camaro RS 5.3 BTR STG3 Cam Super T10 1940 Ford 354 Hemi 46RH Ford 9" on air ride huge project Tired of spark plugs? Check this out. |
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