High egt's
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
Anyone have any input on this? weather or not 38r will complement a s400 very good or not?
Cargo Master
Joined: Nov 2010
Posts: 2,797
Likes: 10
Go strike up a thread over on PSA.. There is a group running big fuel and big air and beat on their DDs, towing pretty hard too. There is good and bad info... And a bit more ego than here :-)
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
Regarding compounds, I'd run a single 400 series turbo with that injector setup any day of the week. Your fueling is more than sufficient to lite a 4 series adequately and keep it cool. As a DD it may be a tad bit slow but not irritating. Changing housings and wheels over a stocker, they actually do not lag that bad. Due to displacement, not many run compounds on a 7.3. Some have if they are running incredibly big fuel/ turbines. Bad idea running compounds ... No.
Go strike up a thread over on PSA.. There is a group running big fuel and big air and beat on their DDs, towing pretty hard too. There is good and bad info... And a bit more ego than here :-)
Go strike up a thread over on PSA.. There is a group running big fuel and big air and beat on their DDs, towing pretty hard too. There is good and bad info... And a bit more ego than here :-)
Okay, the 38r seems a little sluggish on light up compared to the stock turbo. I had dp's 150hp aggressive with as much low boost fueling and the stocker lit up really quick. I saw the 30psi of boost with it. But I changed to a hydra with gh tunes when the sticks went in. It's by no means slow on light up but is laggie compared to the old setup.
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
Regarding compounds, I'd run a single 400 series turbo with that injector setup any day of the week. Your fueling is more than sufficient to lite a 4 series adequately and keep it cool. As a DD it may be a tad bit slow but not irritating. Changing housings and wheels over a stocker, they actually do not lag that bad. Due to displacement, not many run compounds on a 7.3. Some have if they are running incredibly big fuel/ turbines. Bad idea running compounds ... No.
Go strike up a thread over on PSA.. There is a group running big fuel and big air and beat on their DDs, towing pretty hard too. There is good and bad info... And a bit more ego than here :-)
Go strike up a thread over on PSA.. There is a group running big fuel and big air and beat on their DDs, towing pretty hard too. There is good and bad info... And a bit more ego than here :-)
Logistics Pro
Joined: Dec 2010
Posts: 4,738
Likes: 15
From: Temperance, MI
A window for crank inspection. You'll need it with PMRs and you'll get one real quick. Usually to run compounds the bottom end needs to be built and by built I don't mean a set of factory forged rods either
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
Ic that's good to know, I sent an email to Matt at gh to see if I can run water/methanol with the pmr bottom end with current tuning, or if changes need to be made, or if I should not run it at all?
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
Still waiting for new tune and reply on water/ meth injection. But. I read somewhere that the pistons shouldn't melt untell 2100* then I read 850*? now I would not ever try the 2100* But what is the temp that something will happen. I know a couple buddies run 1500* on there Cummins and don't worried to much. I don't know the diff or if there is one that ables them to run those temps and be OK. Last year I ran the same hills around 14-1500* for 5 or so miles before injectors or anything just had a nasty dirty tune. Anyone melt there motor? What temp?
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Logistics Pro
Joined: Dec 2010
Posts: 4,738
Likes: 15
From: Temperance, MI
I can't tell you for sure on a 7.3 but your Cummins buddies are right. A Cummins can run hotter, longer.
You're worried about heat soak more than just a quick burst. Sorry I'm not more help
You're worried about heat soak more than just a quick burst. Sorry I'm not more help
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
How long is a short burst say a couple min or sec. Got Matt's email wrong, but the guy I talked to at gh said he's a fan for doing what I'm trying to do with water methanol. But ask Matt he will know for sure. So also no tuning changes as of now. If the do anything it will be like pulling my foot out of the throttle.
Laughing Gas
Joined: Nov 2013
Posts: 868
Likes: 1
From: SoCal
No first hand experience here, but I've read of water injection washing the oil off of the cylinder walls and prematurely wearing out the rings/bore. I read somewhere about someone (could I be anymore vague?) using a water based tool cutting solution to combat ring wear. I read it on the internet, so it must be true!
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
No first hand experience here, but I've read of water injection washing the oil off of the cylinder walls and prematurely wearing out the rings/bore. I read somewhere about someone (could I be anymore vague?) using a water based tool cutting solution to combat ring wear. I read it on the internet, so it must be true!
Laughing Gas
Joined: Nov 2013
Posts: 868
Likes: 1
From: SoCal
I'm in the same boat as you. No matter what I do, I'm under the turbo at 2k rpm and it's a hot smokey mess. I've asked a couple of vendors about swapping out my 12 blade WW2 for a 6/6 blade and both agree that I'll see little difference. At this point, I'm ready to sell the 38r and go with either an S364.5, or a BASB.
Thread Starter
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Tuned
Joined: Oct 2012
Posts: 409
Likes: 4
From: oregon
I'm in the same boat as you. No matter what I do, I'm under the turbo at 2k rpm and it's a hot smokey mess. I've asked a couple of vendors about swapping out my 12 blade WW2 for a 6/6 blade and both agree that I'll see little difference. At this point, I'm ready to sell the 38r and go with either an S364.5, or a BASB.
Logistics Pro
Joined: Dec 2010
Posts: 4,738
Likes: 15
From: Temperance, MI
Windshield washer fluid is popular for water/meth injection. I think you're at the wrong site honestly for your problem. FTE is more about fixing stockish trucks and upgrading moderately. Once you hit the point you're at there's very few with knowledge.
I've used this before to describe heat soak:
Light a candle and wave your hand over the flame... Doesn't hurt at all right...
Same thing but slow your hand down or stop above the flame..... Ouch.
Usually bursts down the track are not going to hurt, I've heard of guys hitting 2200 on the track. That's completely different than hitting 2200 (using a random number) pulling a 10 mile long 7% grade. Something in scenario #2 will give and break long before scenario #1
When money permits I'd be doing a turbo swap, what turbo I'm not sure. When I had my 7.3 still I was going to go 250/200s and an H2E T4 setup. Then I realized I was still going to be disappointed after all the money spent with minimal gains
I've used this before to describe heat soak:
Light a candle and wave your hand over the flame... Doesn't hurt at all right...
Same thing but slow your hand down or stop above the flame..... Ouch.
Usually bursts down the track are not going to hurt, I've heard of guys hitting 2200 on the track. That's completely different than hitting 2200 (using a random number) pulling a 10 mile long 7% grade. Something in scenario #2 will give and break long before scenario #1
When money permits I'd be doing a turbo swap, what turbo I'm not sure. When I had my 7.3 still I was going to go 250/200s and an H2E T4 setup. Then I realized I was still going to be disappointed after all the money spent with minimal gains