Chevy/GMC 6.2L and 6.5L Discussion of Chevy and GMC Trucks with 6.2L and 6.5L Diesel Engines

Turbo Swap

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Old Mar 21, 2010 | 11:46 AM
  #1  
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Default Turbo Swap

Ok so i started screwing with my truck today. Not a really good idea for me cause i tend to go over board!!! But anyway, Im swapping in an H1C with a 12cm housing into my 94 gmc 6.5. I'm gonna to a whole right up on it with a whole $hit load of pics, but if anyone has any comments, or things for me to look out for, all input is appreciated.
 
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Old Mar 21, 2010 | 05:15 PM
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ok so i got started today, but didn't get too far, forgot to check my oxy torches, no gas!

anyway

i did start to install my boost gauge,
Turbo Swap-100_0386.jpg
remove the 6 10mm bolts off of the upper plenum, unplug your map sensor and other sensor, remove the 2 13mm bolts for the support brace from the turbo to the plenum, and the 8mm nut for the boot from the turbo to the plenum

Turbo Swap-100_0387.jpg
remove the 3 10mm bolts for the heat sheild that surrounds the turbo, undue the intake boot, there are 2 15mm bolts for a support from the turbo to the intake manifold

thats as far as i got without gas, due to the entire things being rusty as can be,
 
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Old Mar 21, 2010 | 06:59 PM
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those turbo pedastal bolts are bitches arent they. while your under there i would relocate the pmd to behind the front bumper so it doesnt get super heated from all that hot air in the engine bay. so how much boost are you going to be running?
 
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Old Mar 21, 2010 | 08:14 PM
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i have the extension harness sitting in a box waiting for me, i plan on running about 15 pounds, for now, i have another motor i building for it, that i'll put probably 25 pounds to, once i get more money
 
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Old Mar 21, 2010 | 09:25 PM
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i would suggest some arp headstuds for those engines and 18:1 compression ratio for that engine getting 25 psi of boost.
 
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Old Mar 22, 2010 | 05:59 PM
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I would like to know the improvement over stock you get. I have one with I suspect a bad turbo and am thinking of putting a hx35 or something similar and would like to know if it is worth the work. Keep us posted.
 
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Old Mar 22, 2010 | 06:20 PM
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i dont know what your budgets are but there is another great turbo out there specically designed for the 6.5. its called the A Team Turbo and you can get it at this place. http://walkingjdesigns.myshopify.com...charger-a-team

people getting a 1-3 mpg increase is reported and overall it seems to be a nice towing turbo. works nice a KOJO tune too.
 
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Old Mar 22, 2010 | 06:25 PM
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i looked into the a team turbo, and i talked to a few people who have it, adn they love it, but unfortunitly for me i'm on a very tight budget, and i can see spending 750 dollars for a turbo, as where the h1c that i have, i got for 150 bucks, and so far maybe have 175 into it
 
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Old Mar 22, 2010 | 07:40 PM
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totally understandable. im in the same boat as you
 
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Old Mar 22, 2010 | 09:07 PM
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That's interesting. Why do people have to mess my plans up! I think think they are try to get my wife to leave me.

I would also like to agree with your status but he's not and thats scary!!!
 
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