Deeper thoughts about air flow

[cmann250]

I've decided i have plenty of fuel for my tastes with stock non-IC'd injectors and a tweaked pump. Now i need the air to cool it. What i want is to never have to realistically worry about EGT's. I know if i put it to the floor while towing before the turbo spools, i'll always watch my pyro swing straight up. Realistically never have EGT problems

Here's what I'm thinking will work (very subject to change):
-7.3L PSD intercooler
-Super 40 turbo
-Custom 3" or 3.5" intercooler tubes because i want to make a custom twin intake (don't worry TWorline, they will not look NEARLY as pretty as your's )
-The aforementioned twin intake (2.5" or 3") entering between cylinders 2 & 3 and 4 & 5, plus the custom intake plate
-And obviously 4" exhaust

I don't really care about mega horsepower and i have no desire to keep up with chipped common rails and Duramaxes. I just want a truck that runs pretty well, doesn't get too warm, and tows nicely.

Questions, comments, or concerns? Post them up, i want to hear them

[Kasper Cummins]

Sounds like you have a good plan. The turbo sounds big to me but I don't know anyone personally that is running a super40. You could also setup a water injection system.

[oldestof11]

Good plan!

[cmann250]

Sounds like you have a good plan. The turbo sounds big to me but I don't know anyone personally that is running a super40. You could also setup a water injection system.

Well, I would think an HX 35 would be too small and egt's would get toasty. From what i understand, their compressors are marginally bigger than the H1C I have now. The whole goal is to not have to turn down the fuel

On my intake horn idea, i may have to scale back because of injector lines. Unless i want to get custom lines made

[JQmile]

Or you could just build twins. Might not be as expensive as you might think, and they'll cool anything.

[cmann250]

Don't be telling me that If the Super 40 doesn't spool or cool like i want it to, a small set of twins will be strongly considered. What concerns me about twins is i'd have twice as many potential oil leak points (feeds and returns) and there's so much more hot pipe under the hood that could raise coolant temps. At least those are the issues i have seen people have before

Anyone please discuss twins further, that's why i said the plan was so loose in the first place. I want to see twins on daily drivers and tow rigs

[JustinRhodes]

Don't be telling me that If the Super 40 doesn't spool or cool like i want it to, a small set of twins will be strongly considered. What concerns me about twins is i'd have twice as many potential oil leak points (feeds and returns) and there's so much more hot pipe under the hood that could raise coolant temps. At least those are the issues i have seen people have before

Anyone please discuss twins further, that's why i said the plan was so loose in the first place. I want to see twins on daily drivers and tow rigs

Tacoclaw has a set of twins and is(was?) daily driving his truck. I believe he said his coolant temps didnt raise at all but he would have to fill you in. He setup looks cool with all the heat blankets all over everything

Also Ahineman was daily driving with twins i believe there for a while. Speaking of that, hineman why haven't i passed you going down the road in your truck yet??

Also if you buy a super 40 and not like it, let me know if u sell it.

[Kasper Cummins]

Maybe keep your H1C and use an air to water intercooler. Or you could try twins with an air to water intercooler.

[cmann250]

Justin- you've got some valid points there. I have a feeling that both of them are running alot more fuel through their engines than i am. I think Pulltilbroke's friend stillsmokin has twins on his tow rig. I still have to be able to tow comfortably. I don't tow every day, but i tow more that the average guy does. The Super 40 idea came into my head after i saw Philip's truck at SOP. He has 6x16's with near stock IP settings and a Super 40. I think the amount of fuel we're putting into our engines has to be close to the same. His is a farm truck like mine and i'm sure he uses it to it's full potential, which is what i want to be able to do. Just my thoughts...

Kasper- A air-to-water IC is too out there for me

Here's my explanation on the "twin ram" style intake. 1. It looks cool 2. Science says it will cool EGT's because the air entering the front and back cylinders will be cooler due to the fact it will be in the intake log for a shorter time. This would result in an over all cooler EGT. I'm not dropping several hundred on a kit from a company, so i'm only into it for materials and time. I saw a comparison of my current stock crossover tube to a 2nd gen one, and the restriction is amazing in my cross over tube. Efficiency is all about getting air in and out easily

[oldestof11]

Now also think about this...

Stomp had 7xxhp worth of air going through his stock intake. It wasn't until recently that he had that part upgraded.

Air to water would be ok but compounds would be far more effective.

[cmann250]

Now also think about this...

Stomp had 7xxhp worth of air going through his stock intake. It wasn't until recently that he had that part upgraded.

Air to water would be ok but compounds would be far more effective.

That's a good point Jon, but i'm not going to tread into VE cummins politics Is the science behind my air flow and intake idea solid? It's been said before that a twin intake isn't all it's cracked up to be. Other than the "cool factor", is a twin intake better than a p-pump 12v or 24v stock intake horn?

I'm still a bit skeptical of twins being as reliable as stock... Share your reliability stories on twins!

[BC847]

The twin-intake feed-horns don't in themselves add any power. It's just a Vee-shaped pipe that conducts nothing but air. That being said, it in terms of charge-air distribution to a log-manifold, is superior as compared to a single inlet type of feed-horn. The point, a more uniform charge-air intake per cylinder combined with uniform fuel injection (uniform Pop-pressures) will result in more uniform power production from each of the six cylinders.
The idea is to avoid cylinders 2 & 3 potentially running lean as compared to 5 & 6 potentially running rich for example.

If you're serious about such and have deeper pockets, just cut off the integral intake-log, port the intake-runners and bolt on an after-market intake-log and be done with it.

[cmann250]

Thanks BC847, that's the kind of info i'm looking for. Milling off the intake log is out of the question due to relatively shallow pockets. I did take a look at some of your pics to get ideas on routing injector lines

I understand the "evening out" effect of the twin intake horns. So with that info, i think i'm sold on the idea.

[ahale2772]

Hey my pockets are non-existant and i still have a milled up head and a runner manifold, its wouldnt be a 1st gen if us guys bought every thing for our trucks amd just forked out $$$

I guess a cnc mill and lots of metal working stuff helps tho

Im kinda in the same position as you, I would like to burn some of my fuel before i start throwing more at my truck. Ive got a funny looking stick with weird lobes on it coming in the mail for just that reason

[cmann250]

I'm not needing to go that deep into it, i have alot of improvement i can do on the outside yet