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On3 performance 78/76

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Old Jul 3, 2014 | 09:21 PM
  #101  
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Yeah I hope these are a result of something else or it's not going to cut it for my twin setup at all
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Old Jul 3, 2014 | 09:28 PM
  #102  
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i want to see some other results honestly but at least in this setup it was not worth the swap, we just did it because my friend who bought the 78/75 is a little bit out before he can install it, so he let me borrow it.

this is the same hotside that was on my 6.0 2500 truck that did 675whp on 16psi with a magnum 80mm

so i figure the hotside can at least do 600+ so i dont think that is holding it back.
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Old Jul 3, 2014 | 09:43 PM
  #103  
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Originally Posted by denmah
i want to see some other results honestly but at least in this setup it was not worth the swap, we just did it because my friend who bought the 78/75 is a little bit out before he can install it, so he let me borrow it.

this is the same hotside that was on my 6.0 2500 truck that did 675whp on 16psi with a magnum 80mm

so i figure the hotside can at least do 600+ so i dont think that is holding it back.
Well that's not exactly what I wanted to hear.
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Old Jul 3, 2014 | 09:44 PM
  #104  
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That's pretty low power for a 6.0 @ 20psi with either turbo. Big power eating converter/rear/tires on that truck?
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Old Jul 3, 2014 | 09:49 PM
  #105  
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stock converter, 80e, 30s street tires
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Old Jul 3, 2014 | 09:58 PM
  #106  
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Not what a lot of us where hoping for. I'd like to see some others results befoe I make a judgement.
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Old Jul 4, 2014 | 08:52 AM
  #107  
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Lots of jerking for a dismal climax...I was hoping to see about 650whp on 15psi. Are you sure it has a 76mm exhaust wheel? Thanks again for the comparison Denmah!!
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Old Jul 4, 2014 | 09:12 AM
  #108  
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Blowing through the converter maybe?
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Old Jul 4, 2014 | 09:21 AM
  #109  
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Originally Posted by Sarg
Blowing through the converter maybe?
I would like to see dyno #s with a manual just to see what it's capable of before writing it off
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Old Jul 4, 2014 | 09:42 AM
  #110  
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Damn wow! I wanted to make at least 600-650 with it!
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Old Jul 4, 2014 | 11:58 AM
  #111  
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I really feel there must be something else at work here if a 5.7 can make over 700 with the 76. Either that or this is just a horribly designed turbo.
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Old Jul 4, 2014 | 02:53 PM
  #112  
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Was gonna purchase one for my huron speed kit. Kinda want to see some more results.
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Old Jul 4, 2014 | 04:23 PM
  #113  
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IMO the smaller motors make great power with the china turbos, because of the small turbine.

i dont know how the hell anyone does 700+ with the 76mm honestly lol
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Old Jul 4, 2014 | 06:53 PM
  #114  
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Waiting for more dynos or some track results.
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Old Jul 6, 2014 | 06:22 PM
  #115  
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Id imagine you might need a different cam profile for the larger turbine wheel, or spin more rpm vs more boost. Isnt the point of the larger wheel to carry the power higher vs quicker spool/lower peak power? If its a copied turbonetics wheel design it should do better than mid 500s.
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Old Jul 6, 2014 | 10:20 PM
  #116  
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i have a billet etr ho 76mm coming and im swapping that on, if it doesnt make big power i am doing a cam swap to see if i got the wrong cam this time
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Old Jul 7, 2014 | 11:11 AM
  #117  
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Originally Posted by denmah
swapped it on a 500whp on3 equipped built 6.0 truck and it makes nearly the same power as the 76 at the same boost levels, just makes slightly more hp

honestly not sure whats up with that, might be something else in the setup?

i also have a KB racing manifold and billet turbo on the way for this truck
Are you seeing 20lbs all the way to redline with the 76/65, or does it peak at 20 and drop off as rpm climbs?
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Old Jul 7, 2014 | 11:57 AM
  #118  
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it actually held 20lbs the whole way, im still not convinced that these are accurate turbo results, as i can only do 515-540 with the 76mm turbo also, something else might be capping my setup, possibly incorrect camshaft
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Old Jul 7, 2014 | 12:01 PM
  #119  
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I hope that is the case! Im really looking forward to this turbo for my build. But I want more than 500hp...obviously haha
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Old Jul 7, 2014 | 01:05 PM
  #120  
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Originally Posted by FrossB
I hope that is the case! Im really looking forward to this turbo for my build. But I want more than 500hp...obviously haha
Yeah I think something else may be at play here. I know one guy made 765whp with the 76 on a 6 speed car. I would like for these to at least support 750whp each as I'm using them in a twin setup. I wanted to give them a shot and later I will swap them out with some billet wheel turbos.
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