Truckers, lets see your rigs!

jfaulkner said:
I doubt it’s that high on the gold standard euro dyno.

Ok to prove the single vs compound turbo argument in the real world again, my truck and friends are almost identical except for compression ratio. Both 3.55, 18spd 24.5lp. Engines are identical except his is 14:1 and mine is 16.5:1 which in this case doesn’t help the argument FOR singles and HP. His ran exactly 1100hp with a single HX82 and mine did 1138 last year with compounds. Mine will begin making boost at 1200rpm, his won’t begin to make boost below 1600rpm. (Barely makes 5psi with the jake so it’s more worthless than mine that makes 10psi) We’re looking for a smaller housing for him to try before he puts the compounds back on but there is a chance it will boost to the moon or surge. Guys that don’t actually need work their 1k+ HP trucks love singles, but I haven’t ran across any of these working unicorns in the wild. It might work in states that are so flat you can watch your dog run away for 2 days.

Oh and Leiffi we didn’t see a single Volvo or any euro engine there so maybe next year?
Click to expand...
HX82 is way too big for those power levels. I still have some turbines and compressors to make 1200 ho single that works from 1000 rpm upwards and stays cool enough for working. But someone needs to know how to tune. OK, HX60 works almost as well.
 
jfaulkner said:
Yea Taylor doesn’t know crap about building dyno’s. When they get the transmission in direct and click on “start” and the computer takes over they are manipulating the numbers.
Click to expand...

Start from for example 900 rom and click start, then telk me the numbers. Not from 3000 rpm or what ever the engine is free revving.
 
jfaulkner said:
This European dyno numbers or a working 1000hp. Or more Finnish BS?

You do realize the backpressure with twins has been debunked right? Unlike you I actually tapped the manifold, measured it and video’d the gauge. But please don’t let facts get in the way of your opinion.

Oh how did your countries latest universal basic income experiment work out? Socialism trial 64,546 failed again, shocking.
Click to expand...
I have had backpressure gauge for years, new engines have sensor, you can check it from diagnostics. Twins always have higher boist and backpressure, pumping losses are waste of power.

What basic income ? It was never even tried, someone only made a suggestion. But it might actually wirk.
 
BRE said:
65-67mph in 18th is 1350~rpm 15lbs give or take.
70-72 is 1400-1450rpm with about the same forced air pressure.

Mind you, this trailer is heavy, 12ft spread, and is 53ft of sail.


Sent from my iPhone using Tapatalk Pro
Click to expand...

What are similar combos and applications doin for mpgs?
 
Leiffi said:
HX82 is way too big for those power levels. I still have some turbines and compressors to make 1200 ho single that works from 1000 rpm upwards and stays cool enough for working. But someone needs to know how to tune. OK, HX60 works almost as well.
Click to expand...



Well you might want to tell Holset that because they rate the 4.1 hx82 to 1200hp. But I guess you know more than the designer/manufacturers. Oh and with all the talk of knowing how to tune can you even tune a radio station?
 
Leiffi said:
I have had backpressure gauge for years, new engines have sensor, you can check it from diagnostics. Twins always have higher boist and backpressure, pumping losses are waste of power.



What basic income ? It was never even tried, someone only made a suggestion. But it might actually wirk.
Click to expand...



Paying people not to work, seems like a good communist idea.
 
Leiffi said:
HX82 is way too big for those power levels. I still have some turbines and compressors to make 1200 ho single that works from 1000 rpm upwards and stays cool enough for working. But someone needs to know how to tune. OK, HX60 works almost as well.
Click to expand...



I forgot Leiffi my manifold turbo (before I went to the larger compressor wheel) was OEM off a 700hp QSX Cummins. So if an HX60 was better why didn’t Cummins use a 60? Or is this another example of you knowing more than the designer? Or could it be the 60 isn’t large enough to support a sustained 700hp? Which brings me back to the “working” hp and not blips on a dyno.
 
jfaulkner said:
I forgot Leiffi my manifold turbo (before I went to the larger compressor wheel) was OEM off a 700hp QSX Cummins. So if an HX60 was better why didn’t Cummins use a 60? Or is this another example of you knowing more than the designer? Or could it be the 60 isn’t large enough to support a sustained 700hp? Which brings me back to the “working” hp and not blips on a dyno.
Click to expand...

Not even 700hp, the 755hp jumps to a 89mm compressor and G trim turbine.
 
Rig Wrench said:
What are similar combos and applications doin for mpgs?
Click to expand...



I finally did a little asking around and apparently I’m doing pretty damn good.
However, when I got out here from West Texas through New Mexico, it drank fuel. Back down to 4.3 but there is some hard pulls on top of wind.


Sent from my iPhone using Tapatalk Pro
 
jfaulkner said:
Well you might want to tell Holset that because they rate the 4.1 hx82 to 1200hp. But I guess you know more than the designer/manufacturers. Oh and with all the talk of knowing how to tune can you even tune a radio station?
Click to expand...

I thought it flowed up to 200 lbs/min? That's a lot more than 1200 hp. Or are we talking something different?
 
allan5oh said:
I thought it flowed up to 200 lbs/min? That's a lot more than 1200 hp. Or are we talking something different?
Click to expand...

Where did you come up with that make believe number, holset doesn’t offer compressor maps, so let’s take a modern comparison of a Garrett GT6041, the map stops at 185lbs/min, peak efficiency is around 150lbs/min.

Now let’s take test cell data from a 1136hp marine engine, at max load at max rpm it takes in 9041lbs/hr of air, that comes down to 150lbs/min.

Also, just because a turbo is rated for XX at peak performance doesn’t mean it can’t be used at lower HP ratings. Why does everyone want to run **** on kill all the one with turbos.
 
SmokinCAT said:
Where did you come up with that make believe number, holset doesn’t offer compressor maps, so let’s take a modern comparison of a Garrett GT6041, the map stops at 185lbs/min, peak efficiency is around 150lbs/min.
Click to expand...

I'm not actually sure TBH! I know there's a few different flavors, but I didn't say "it flows this much".

Now let’s take test cell data from a 1136hp marine engine, at max load at max rpm it takes in 9041lbs/hr of air, that comes down to 150lbs/min.
Click to expand...

How much excess air is it moving at this point? Is it right on the edge?

Also, just because a turbo is rated for XX at peak performance doesn’t mean it can’t be used at lower HP ratings. Why does everyone want to run **** on kill all the one with turbos.
Click to expand...

It all depends on the application I suppose? How is running on the right side of the map on occasion an issue?

Ruud Viser pushes a 72sxe to over 1100 HP in an application that's harder on the turbo than anyone on here does.
 
Last edited:
allan5oh said:
I'm not actually sure TBH! I know there's a few different flavors, but I didn't say "it flows this much".



How much excess air is it moving at this point? Is it right on the edge?



It all depends on the application I suppose? How is running on the right side of the map on occasion an issue?

Ruud Viser pushes a 72sxe to over 1100 HP in an application that's harder on the turbo than anyone on here does.
Click to expand...

Your point?

I don’t care how hard someone pushes something, my manifold charger hates its life every time I run my truck, it runs well but that does me absolutely fuk all if it explodes from being pushed too hard and takes out my engine, so why wouldn’t I want a more reliable setup?
 
allan5oh said:
I'm not actually sure TBH! I know there's a few different flavors, but I didn't say "it flows this much".



How much excess air is it moving at this point? Is it right on the edge?



It all depends on the application I suppose? How is running on the right side of the map on occasion an issue?

Ruud Viser pushes a 72sxe to over 1100 HP in an application that's harder on the turbo than anyone on here does.
Click to expand...

Most aren’t on the right side of the map, almost every setup out there is running close to the surge line, and either side kills efficiency of the compressor, but the left side makes more heat as you are finding out.
 
The chargers on the test engine I mean tuned are S400s on a split manifold setup, they run a whopping 36psi and yet still make 425* of heat at the turbo outlet, just the nature of stock BW compressors.
 
SmokinCAT said:
Most aren’t on the right side of the map, almost every setup out there is running close to the surge line, and either side kills efficiency of the compressor, but the left side makes more heat as you are finding out.
Click to expand...

Isn't that harder on the turbo?

I would think I would be running slightly to the right of the middle of the map on mine. Unless there's something wrong with my math.
 
You must log in or register to reply here.
Back
Top