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6.5L Turbo Diesel 1992-00 6.5TD - Discussion forum for the 6.5L engine.

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  #1  
Old 09-29-2006, 12:32 PM
DieselYJ DieselYJ is offline
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Location: Salem, MI
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Default Twin turbos for a hummer 6.5L??

I have driven my Jeep with the 38" tires on it for a couple of years now and put a little over 5000 miles on it with the stock military hummer engine in it and am quite happy with it.
But now I would like to up the horsepower significantly and decided that installing twin turbos would be the easiest and the kewlest.
As some of you know the hummer engine has two separate intakes, one for each side of the V. My preliminary thoughts include one turbo for each side, one intercooler for each side, propane and nitrous injection.
What turbos would be best suited for this setup??
Would it be possible to use the stock engine, ie injectors, injection pump and pistons??
As long as I keep the exhaust temps down it should stay together shouldn't it??
Please remember this is not for a 8000+lb truck that will be pulling another 10000+lb trailer, it is for a 4000 lb Jeep that wont be pulling much if anything, and only putting around 5000 miles a year on it.
I have the fabrication skills to pull this off, but as some of you might have guessed by now, i dont have the engineering skills!!
I also know that there are many on here that do have these skills, that is why I am asking here.
I can handle constructive critisism and even "that is just plain stupid" as long as you explain why and give me some good suggestions of the right way to do this.
I am hoping to achieve around 400hp.
Any suggestions would be greatly appreciated.
Thank you in advance.
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  #2  
Old 09-29-2006, 02:37 PM
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More Power More Power is offline
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Peninsulardiesel.com has produced a few sets of headers for the 6.2/6.5 made for a twin turbo setup.



Peter Bierman has also produced a one-off twin turbo system for his Blazer. Maybe he'll step in here with more info....

Good luck,

Jim
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  #3  
Old 09-29-2006, 10:15 PM
DA BIG ONE DA BIG ONE is offline
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Default Twins

Consider, surge line is biggest issue so use turbine/compressor maps to find best combo for the diesels limited rpm range. With properly sized twins spoolup is not an issue.

See; http://www.stealth316.com/2-turboguide.htm#c
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Old 10-08-2006, 09:57 AM
JeepSJ JeepSJ is offline
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Separate intakes on a Hummer? That is news to me. Father-in-law has a 2002 and it has a single intake. Plus, the intake I used on my engine swap was also from a Hummer. Have any pics of that?
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  #5  
Old 10-08-2006, 11:14 AM
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farmboy1989 farmboy1989 is offline
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If you are going through all the trouble twin turbo'ing the engine, why not just use single turbo and supercharge it with a mechanical blower?... Just a thought.
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  #6  
Old 10-08-2006, 03:13 PM
DA BIG ONE DA BIG ONE is offline
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Default Notice the small size of turbos?

To avoid surge the twins must be small, however, you can use a smaller turbo on your motor then go with another turbo about twice the size for a compound setup. This will yield higher boost levels at low boost setting and at much cooler charge temps with charge cooler (IC) it would rock......

See:http://www.turbomaster.info/eng/bulletins.php?id=18
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99 GMC SUB, 2500, 4x4, 6.5 TD (F) #H32 enhanced blk, Phaser timing set, B&D IC, 3" ATS exh, K&N w/prefilter, 4WD NVG 246, 4L80E kevlar Transgo off road/tow mods/B&M supercooler, 14 FF MagTec w/locker 3.42:1, 9.25" IFS frt/diff 3.42:1 w/ARB locker, AutoMeter Boost & pre-turbo pyro meter, 12,000 lb hydro winch, Warn classic bumper w/brushguard & diesel scoop, Max E-torq Stage 3, hi pop inj, oil bypass sys, on board air comp for front ARB locker & tire inflation, DynaView driving/auto-cornering lts, DZ nerfs, A/T 285/75/16 SilentArmor 3750 lb rated on 3750 lb rated Alcoa, 3 IP drivers 2 r spares.
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  #7  
Old 10-08-2006, 03:46 PM
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Missy Good Wench ( Moderator)
 
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Has anyone ever messed with a paxton huffer on a 6.2/6.5
The old Studebakers howled with them. I know that a belt driven supercharger is available for many applications????????????????
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  #8  
Old 10-08-2006, 09:24 PM
Craig M Craig M is offline
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Some of the H1 Hummers with 6.5's have installed superchargers. Have viewed a few web pages about those conversions.
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  #9  
Old 10-08-2006, 11:15 PM
murphyslaw murphyslaw is offline
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who if anyone makes a supercharger or "blower" for the 6.2/6.5
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  #10  
Old 10-09-2006, 06:46 AM
Hubert Hubert is offline
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MARINEDIESELUSA.COM has a supercharged 6.5 package.

There are a couple of threads on the page about it. Someone put a 300HP in a dually. I think they are in the archives but a search will pull them up.

I think Eaton use to market a supercharger 3+ yrs ago but lost the link a long time ago and never saw anything about the intake or mounting.

Seen pictures of a few twin turbos on the web and they are all custom fabrications. Hats off to anyone who can fit it under the hood.

Haven't seen anything new or recent on twins. Last interesting thing was RJ's modified single turbo. A documented improvement. Heard of other guys doing holset turbo swaps but nothing really documented as an improvement.
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