Shake down cruise

Dieselcrawler

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I have a filter, bring whatever oil you want to run. We can also run out and get it here as I have many parts stores within 15 mins
 

Macrobb

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Lol
Are you talking stock 6.0 PSD power levels?
You could bulletproof a 6.0 cheaper than building a IDI to have stock 6.0 power.
Uh... Not sure about that.
I mean, looks like a stock 6.0 PSD can be as low as 226RWHP. Probably more in the range of 250-ish, factoring in losses.

A bone-stock 7.3 IDI with a Banks turbo can easily put down 220 at the wheels with the wastegate locked out and the pump maxed out.

A 7.3 idi with factory or banks turbo and a R&D RD2-110 can put down 250 RWHP, pushing only 12-15 psi of boost.

And... I'm running these rigs as daily drivers with no studs in either. And no issues yet.

Obviously, studs are a good idea... but I'm just saying...

Also, pretty sure that a set of studs and a better turbo than the te06H or ford factory/ATS turbo would be able to push 300 without breaking a sweat, with a RD2-110 or bigger pump.
 

79jasper

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Maybe.... I'd like to see it.
And 9/10 people running over factory power without studs, what happens?
Just because one guy can do it, doesn't mean it's reliable and will work for someone else.
Not sure where you got your numbers. Maybe for the medium duty pickups that were derated?
But 03-04 was 325/560.
And I'm not even a big fan of the 6.0 so it's not like I'm pushing made up numbers to make them sound good. Lol
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Macrobb

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Maybe.... I'd like to see it.
And 9/10 people running over factory power without studs, what happens?
Just because one guy can do it, doesn't mean it's reliable and will work for someone else.
Well, give me a few more trucks and I'll try it on them, too. :p
I've heard of multiple others doing it too, including at least one or two on this forum.

But 03-04 was 325/560.
At the /crank/. Not at the wheels.
A stock NA IDI is rated 185 at the crank, and makes (at best) 125 at the wheels - 60HP loss.
With more HP, you have more losses. That puts a 250RWHP number at least at 310 crank, and probably more.

Or, vice-versa, go look at 6.0 /stock/ dyno runs. They are hard to find, because very few people want to waste money putting a stock truck on the dyno... but there are a few.

Also... I did link at least one source.
 

oregon96psd

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My 86 with a 7.3, banks turbo and R&D 90cc pump/stage one injectors timed to 8* will make 15 psi, but I'm 90% sure it wouldn't break 200 on the dyno, it's a ****. I drove a 2006 6.0 f550 service truck for two years that I'm pretty sure would stomp that idi lol, and towing heavy......not even a comparison to be made there, might as well shut off the idi.
 

79jasper

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Didn't see the clicky. Lol
That's interresting that people are seeing so much loss. And the numbers vary quite a bit.

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chillman88

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A 7.3 idi with factory or banks turbo and a R&D RD2-110 can put down 250 RWHP, pushing only 12-15 psi of boost.

I am going to ask for the sake of discussion, what do you see for EGTs? Do you have to keep an eye on it or so they stay at a safe level normally?
 

centennial60

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From what I've seen a stock 6.0 will dyno right around 260 RWHP.


My 86 with a 7.3, banks turbo and R&D 90cc pump/stage one injectors timed to 8* will make 15 psi, but I'm 90% sure it wouldn't break 200 on the dyno, it's a ****. I drove a 2006 6.0 f550 service truck for two years that I'm pretty sure would stomp that idi lol, and towing heavy......not even a comparison to be made there, might as well shut off the idi.


How hot does it get with that combination? Can you flat foot it up a hill without worrying about EGT?
 

Macrobb

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I am going to ask for the sake of discussion, what do you see for EGTs? Do you have to keep an eye on it or so they stay at a safe level normally?
On my '88 with banks sidewinder and rd2-110, unloaded, you couldn't push the truck over 1k, measured pre-turbo.
Towing, it was really only an issue up long grades with cruise control on - floored, you'd get smoke and climbing EGTs. Let off slightly, where there was no smoke? Egts would stay in the 1k range, basically.. and I never felt a power difference between floored and smoking, and 90% throttle where the smoke stopped.
note that if I ever hit 1100f I'd back off a little.
This truck gave me 240+ rwhp numbers two years in a row at Hunting 4 Horsepower with that setup.

Part of that is timing, too - I took a trip somewhat retarded, and it was much worse - less power, harder to keep egts sane etc.
 

centennial60

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On my '88 with banks sidewinder and rd2-110, unloaded, you couldn't push the truck over 1k, measured pre-turbo.
Towing, it was really only an issue up long grades with cruise control on - floored, you'd get smoke and climbing EGTs. Let off slightly, where there was no smoke? Egts would stay in the 1k range, basically.. and I never felt a power difference between floored and smoking, and 90% throttle where the smoke stopped.
note that if I ever hit 1100f I'd back off a little.
This truck gave me 240+ rwhp numbers two years in a row at Hunting 4 Horsepower with that setup.

Part of that is timing, too - I took a trip somewhat retarded, and it was much worse - less power, harder to keep egts sane etc.


I bet with a little larger more efficient turbo you could be close to 300 hp. Are you intercooled? I'm guessing your exhaust manifold pressure is pretty high with that setup.
 

oregon96psd

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How hot does it get with that combination? Can you flat foot it up a hill without worrying about EGT?

Pretty much exactly as macrobb described, 1k degrees flat footed and some smoke, the biggest problem is the complete lack of low end power, let it fall below 2k rpm and its all over but the smoke show and cussing, pretty much the same as every idi I've driven, the ATS is a little better but Banks and n/a just suck for low end torque. I would guess a wastegated banks would be about the same as an ATS setup?
 

Macrobb

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I bet with a little larger more efficient turbo you could be close to 300 hp. Are you intercooled? I'm guessing your exhaust manifold pressure is pretty high with that setup.
No intercooler, just stock Banks setup.
Exhaust pressure gets really high once you drive the turbo to 20+.
I've pushed 24 out of it at one time, and it bent a couple of exhaust pushrods. (upgraded to better springs from stock... no problems after that).

The upgraded turbo is my S360 with .63 exhaust housing - spools great, 35 psi unloaded... but I only had that working for a week before the motor threw a rod at cold startup. I'm thinking assembly errors, considering the block was only 10k old and I'd already found valve/piston clearance issues on one head..

I totally believe 300rwhp with that setup, if I can build up a motor for that.
 

Clb

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All of that is in NO WAY caused by excessive boost tho!
 

Macrobb

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All of that is in NO WAY caused by excessive boost tho!
I didn't want to get into this on someone elses topic, but there are a lot more factors here.
1. Since I had the engine built, I had a few issues - not 6 months after I installed it, I found massive valve guide wear on the #1 exhaust cylinder.
After doing a bunch of teardown, I found out that the valve had been beating its way into the piston. (see pics)
I'm 99% certain that the cause was incorrect machining - the passenger side head had valve marks on the pistons, and the valve recession clearance was under spec.
The driver's side head had NO marks, and was in spec(see pics in the above link).
2. After replacing the head with another used head, engine ran again. But... it developed a tick. I was concerned, so I tore the engine down and had the same shop take a look at the short block. They told me everything was fine. I put it back together, and it blew up not a month later.
3. When it failed, it was a Saturday morning after driving near 150 miles the night before. I had a number of stops, no problems. Fired it up and right off the bat it wasn't running right, then blew up.
My guess is that either a bolt came loose on the connecting rod, or the bearing spun and it wasn't getting any lubrication when cold or something like that...

Even if it *was* due to raw boost(which I kind of doubt, thinking about what Justin's blew up at), that was still 35 psi of boost. A *lot* more than any stock turbo can ever put out. 35 is one heck of a lot more than 15.
 

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