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Old 04-04-2017, 08:42 PM   #21
zfaylor
 
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Originally Posted by allan5oh View Post
How is an 01 smaller than stock?
It is 71mm.... 99% of them come with a 75mm from the factory whether they are TMF based or GTA42 based. Low horsepower units came with a 71mm GTA42 base typically.
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Old 04-04-2017, 08:45 PM   #22
allan5oh

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Originally Posted by zfaylor View Post
If you are serious you are severely over complicating a run of the mill 60s.



Gotta have those spools!

"Yes I currently get 10mpg uphill hauling the statue of liberty but I want better mpgs and more power. It has to spool better than stock. I have $263 to spend. Its a detroit."
Yeah I'm a nerd. I have all the software and flash it probably a couple times a week. I've opened the valve cover dozens of times playing games with different clearances on the valves. I even have a digital egt gauge. Divorced compressor intake. Walker mega flow muffler straight out the rear (weed burner). Fun!

As far as spooling when you're shifting hundreds of times a day yes it's important when you drive through the back roads of Wyoming at high elevation yeah it's important. Don't forget not wanting just to dump a **** load of fuel getting your truck and oil dirty. You're wasting fuel at and richer than the smoke limit. Not to mention soot is an abrasive.

But you're likely right about my expectations.


Hey if there's something wrong with my engine I'm all ears.
 
Old 04-04-2017, 08:47 PM   #23
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If you are expecting a 500hp detroit with a 400hp turbo to stay cool pulling a hill then yes the expectations are too high.
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Old 04-04-2017, 09:07 PM   #24
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Basically it seems you started this thread wanting to hear answers that supported your ideas. Obviously that has failed miserably and you don't want to take any advice of anyone that might actually know what works. Leon forgot more about the 12.7 than most will know and you took what he did, and has done for a ton of trucks and screwed it up.

If you want to mess with W/M then go ahead but your going to need a huge tank. Meanwhile you'll get your butt handed to you by a mildly tuned truck running the correct parts.
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Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
 
Old 04-04-2017, 09:20 PM   #25
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Quote:
Originally Posted by zfaylor View Post
It is 71mm.... 99% of them come with a 75mm from the factory whether they are TMF based or GTA42 based. Low horsepower units came with a 71mm GTA42 base typically.
Ok but it's the compressor map that matters. How do those compare?

425 volvos came with a 62mm inducer

Last edited by allan5oh; 04-04-2017 at 09:22 PM.
 
Old 04-04-2017, 09:36 PM   #26
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You guys know methanol carries oxygen right?
 
Old 04-04-2017, 09:44 PM   #27
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Quote:
Originally Posted by allan5oh View Post
Yeah I'm a nerd. I have all the software and flash it probably a couple times a week. I've opened the valve cover dozens of times playing games with different clearances on the valves. I even have a digital egt gauge. Divorced compressor intake. Walker mega flow muffler straight out the rear (weed burner). Fun!



As far as spooling when you're shifting hundreds of times a day yes it's important when you drive through the back roads of Wyoming at high elevation yeah it's important. Don't forget not wanting just to dump a **** load of fuel getting your truck and oil dirty. You're wasting fuel at and richer than the smoke limit. Not to mention soot is an abrasive.



But you're likely right about my expectations.





Hey if there's something wrong with my engine I'm all ears.


I just wanna make you aware, because I don't think you know this...
You're arguing with a turbo manufacturer that does a great deal of work with class 8 stuff, and a top notch high hp class 8 engine builder/truck owner/ and I've heard rumors he's drove one like twice.

These guys aren't Tom and Jerry at the coffee shop. They are well aware of how these engines work and how to make them run.

Might take that into account. I realize you don't like their answers, but it doesn't make them wrong.
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There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 04-04-2017, 09:49 PM   #28
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It is written in crayon on the dash of every freightliner.
That is until the FL actually has a cat in it.
 
Old 04-04-2017, 09:51 PM   #29
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That is until the FL actually has a cat in it.


And now the 3rd "big truck tuna" is here!
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There really is nothing better than OEM. That goes for anything from turbos to boobs.
RIP Dex KCCO
 
Old 04-04-2017, 10:00 PM   #30
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And now the 3rd "big truck tuna" is here!
Nah, I just talk sh*t. I use someone for tuning for engines with wires. LoL
 
Old 04-04-2017, 10:43 PM   #31
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Quote:
Originally Posted by jfaulkner View Post
Basically it seems you started this thread wanting to hear answers that supported your ideas. Obviously that has failed miserably and you don't want to take any advice of anyone that might actually know what works. Leon forgot more about the 12.7 than most will know and you took what he did, and has done for a ton of trucks and screwed it up.

If you want to mess with W/M then go ahead but your going to need a huge tank. Meanwhile you'll get your butt handed to you by a mildly tuned truck running the correct parts.
Nah I didn't screw it up I tweaked it for my own purposes. His tune was great for the larger turbo but it also smoked at times to get that thing to light. It definitely made more power before. I highly recommend him and have given him lots of business.

I want need a huge tank like I said before because I only need extra power on one or two passes. Mostly this is about experimenting and I haven't seen anyone respond "Yes I tried it worked good" or otherwise yet. But what I can do is share dyno verified numbers here. I have nothing to lose if it works or not.
 
Old 04-04-2017, 10:54 PM   #32
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Originally Posted by BRE View Post
I just wanna make you aware, because I don't think you know this...
You're arguing with a turbo manufacturer that does a great deal of work with class 8 stuff, and a top notch high hp class 8 engine builder/truck owner/ and I've heard rumors he's drove one like twice.

These guys aren't Tom and Jerry at the coffee shop. They are well aware of how these engines work and how to make them run.

Might take that into account. I realize you don't like their answers, but it doesn't make them wrong.
I actually don't see much arguing? I see a difference in what we define as an ideal engine. Mine is just different than most. I hate smoke. I like a turbo that isn't lazy. I'm not willing to give that up for more power. Some people are. To each their own.

Also about the turbo inducer vs hp, that has more to do with the rpm limit of the engine. 1800 vs 2110. Again matching the compressor map to engine needs.

Now here comes the interesting part.

Detroit rated their engines quite strange. The HP rating is not peak. It is at rated rpm if it's 1800 or 2110 rpm.

But it gets even more strange!

For different ratings of the same engine, say 430, 470, and 500, the difference is only at rated rpm. Below that there is no difference whatsoever. None. As long as the ratings are the same torque.

So that means if you're never near rated rpm you will never notice the difference between different hp settings.
 
Old 04-04-2017, 10:55 PM   #33
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Nah, I just talk sh*t. I use someone for tuning for engines with wires. LoL
Hey weren't you on TTR in the past? I recognize the handle.
 
Old 04-04-2017, 10:56 PM   #34
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If you are expecting a 500hp detroit with a 400hp turbo to stay cool pulling a hill then yes the expectations are too high.
Who says it's a 400 hp turbo? Also I'm definitely putting more than stock fuel to it. It's cool now but won't be in the middle of summer at high elevation.

Last edited by allan5oh; 04-04-2017 at 10:58 PM.
 
Old 04-05-2017, 12:44 AM   #35
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After docking around with matchbot for way too long. Way too long. I've found a few things:

- the 71mm is probably the best choice for stock or near stock 12.7s. Especially ones with an 1800 limit.
- the 75mm is a better choice if you want to make over 40 psi or want to run over 1600 rpm. It's obviously moves a lot more air.
- if I could have sex with a compressor map, it would be with that 72x96 fmw one. Where have you been all my life? I bet you can't get it with a 96mm hot side though right? This might be the replacement for the 171701/171702 plus fmw means it's stronger. Holy **** look at how flat the islands are at higher boost!
 
Old 04-05-2017, 05:35 AM   #36
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Wow detroit is innovative putting rated horsepower on engines....
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Old 04-05-2017, 07:01 AM   #37
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To me it sounds like you need compounds and to ditch the single turbo. Or listen to what these guys have to say. *whistling
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Old 04-05-2017, 09:33 AM   #38
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If you guys think this is crazy this is only one of three ideas that all tie in together. I will keep you posted!
 
Old 04-05-2017, 09:34 AM   #39
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Wow detroit is innovative putting rated horsepower on engines....
OR idiotic. I just love when a driver tells me he picked up mpg changing hp ratings. Not a tune, just changing ratings. Because it "works easier" or something.
 
Old 04-05-2017, 10:04 AM   #40
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You do realize most engines in industry are advertised at rated horsepower, right?
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