Turbo Setup Poll

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Thewespaul, May 14, 2018.

Which design do you want to see?

Poll closed May 21, 2018.
  1. Compounds

    80.0%
  2. T4 Turbo Kit

    26.7%
Multiple votes are allowed.
  1. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Currently working on my idit to drop into my 93. I’m going to run the factory turbo kit for the time being but wanted to hear what y’all would rather see,

    1) A compound turbo setup using the stock turbo as the manifold charger

    2) An all new turbo kit with t4 flange and a larger single charger

    Either way I’m going to be doing both of these in the next year, but y’all get to pick which comes first. Build thread coming ;Sweet
     
  2. chillman88

    chillman88 Supporting Member Supporting Member

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    Looking forward to both but I'm more excited to see a compound kit on an IDI.
     
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  3. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    If it was completely up to me this is what I would do, I think it would work nicely with the five speed and be mote responsive than the big single. I wouldn’t be surprised if I had to convert the crossover pipe connections to v band to hold the back pressure tho, so that opens another set of obstacles.
     
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  4. D_Fresh361

    D_Fresh361 Supporting Member Supporting Member

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    Compounds got my vote! -Drool
     
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  5. Macrobb

    Macrobb Full Access Member

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    I want to see what a large, tight housing does. I was extremely impressed with my S360 with .63 T3 exhaust housing - quick spool and 25-30 psi. This ought to be good for 300+ RWHP, easily. You might have good luck with a similar setup.
    Note - on my setup, a .83 did not spool well at all. .63 was much better.
     
  6. towcat

    towcat Administrator Staff Member

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    rotary supercharger transitioning to turbo @1500 rpm.
     
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  7. no mufflers

    no mufflers Supporting Member Supporting Member

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    i would say a single charger. i feel that it could supply the amount of air needed for what the motor is capable of.

    im sure you have seen the setup R&D has. i like it and it looks cool and i appreciate the fab work but the motor is kinda limited on how much power it can handle.

    now if you want to do something cool and different as @IDIoit does then im not trying to get ya down on that.

    i am just going on the most practical and cost efficient design, that and dual chargers take a lot of fab time.
     
  8. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    You’re exactly right, the compounds are more of a why not idea, I already have a larger atmosphere charger I could use that I think is gonna be too big as a single, but I think I can make it simple enough that if someone wanted to upgrade their factory turbo setup that came on their truck, they could bolt on a compound kit for cheaper than replacing the whole turbo kit in favor for a t4 kit. That and I love doing things differently, I grew up racing in motor sports and there’s only so many ways you can build a sbc and everyone has done everything that can be done with those engines, IDIs are like the great uknown and it really attracted me to them.

    As far as them holding up to the power well the idit I’m building now will unfortunately be a planned sacrifice, I want to see what breaks and when. I’m going to be do some tricks to try and get it to last at the higher power levels, mostly in the valvetrain and tuning to make power higher in the rpm range so as to stress the bottom end as much.

    I think eventually the plan will be to have the compounds on jerry and to have a larger single with nitrous on the 93 (which has been deamed Project CDD Shop Truck since the yellow truck is getting torn down)

    I think someone posted a pic of Justin’s setup being made but that’s all I’ve seen, I’ve heard he moved over to Facebook which I stay off social media so I don’t really know what he’s got going.
     
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  9. IDIoit

    IDIoit MachinistFabricator Supporting Member

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    I vote compounds, or a sequential system.
    id love to see towcats idea, but with a procharger.
    think it would be cool as hell with a procharger on the left and a big turbo on the right.

    I really need to get some seat time on my parallel system
     
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  10. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    I’d love to do another supercharger setup, the LSA would probably be my choice over the little m90, but I think that would be fun in a car, personally would love to build a chassis and drop a Fiberglass t bucket shell on it and race it, but that’s many projects away
     
  11. austin92

    austin92 Full Access Member

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    I think with the low(er) boost numbers most of us run it would be super cool to see some time put in developing a compound setup that produced 4-6psi cruising and 20psi before 1800rpm unloaded. I’ve always associated compounds with low rpm/high boost, essentially fixing the supercharger vs turbo debate. I’m no boost expert but compounds intrigue me


    Sent from my iPhone using Tapatalk
     
  12. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    The combination of the two chargers’ sizes creates the behavior of how and when the boost comes in, since I’ll be running a very large pump with the factory turbo as the manifold charger I think it will be really responsive. If I had to guess I’d say the manifold charger would be fully spooled by 2000 making ~18 psi and the s366 will start to come in around 2600 and will be making into the 30s and 40s if I can get the fuel to support it. As apart of the build I will be going through the steps of building each pump to different levels, going through the intricacies and the adjustments that are made to get the fine tuning done. I don’t think that has ever really been covered in a build but to me it’s one of the most interesting parts.
     
  13. no mufflers

    no mufflers Supporting Member Supporting Member

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    yeah Justin is mainly on the FB page. the kit he makes is really close in design to the hypermax kit i have. never dealt with him before but he did build a compound turbo setup that looked pretty good.
     
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  14. towcat

    towcat Administrator Staff Member

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    i've worked on "on demand" superchargers where they are "normally off" until certain preprogramed parameters are met, and then the electric clutch engages. it's all about programing these days, i can see this concept being a better fit for a PSD than a IDI, but *IF* I'm allowed to dream....this is what I'd like to do.
    see below pics for what's currently out there.
    intake manifold and supercharger off a AMG mercedes S55

    kleemann supercharger.jpg

    kleemann supercharger2.jpg
     
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  15. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Looks expensive! Pretty much the same baseplate as the LSA, I wonder if they share parts.
     

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