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Thread: Turbo Van Build

  1. #1
    Mitsu booster
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    Turbo Van Build

    Back to the forums (deleted FB and IG because they suck).
    I was never super active here and in the SDAC group on Facebook but would post from time to time.

    Recently posted some photos of my van I was finishing on SDAC FB group, Iíll use the forums now and make a semi sort of build/build progress post.

    Build list is below

    Finally got the van all together and went for some test drives the other day.





    After driving for a bit with only partial throttle I gave it some gas and oil puked out the catch can pretty bad..

    Did a compression test and found cyl 1 down, only 45psi.



    Going to pull the head tonight, crossing fingers itís just a head gasket. Note- the head was installed and driven on prior to me installing big turbo setup.


    Build list
    -5 speed, A568 transmission
    -TU stage 4, 6 puck clutch w/ lightweight flywheel
    -Stock bottom end 2.5
    -Mild built head; beehive valve springs, PT lifters, barely + sized valves (donít remember exact size), mild porting.
    -TU cast exhaust manifold
    -ATP swingvalve
    -TU tranny buster turbo, 50trim w/ stage 2 exhaust wheel and .63 stage 2 exhaust housing
    -ported 2-piece lower intake with custom upper plenum
    -ffv green top injectors
    -high flow fuel pump
    - 3Ē turbo back exhaust
    -frozenboost air/water intercooler


    The purpose of the build is just to make a clean 350-400 whp. Do lots of burnouts and have lots of laughs.


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  2. #2
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Turbo Van Build

    Bummer. My money is on a cracked piston. Hopefully the gasket let go, but... What are you doing for a cal? What boost level were you at when it went?

  3. #3
    turbo addict
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    Re: Turbo Van Build

    Nice build. IMO, FFV injectors are not nearly big enough for your HP goals. I've flowbenched plenty of them and they are no where near +18-20% as some claim. IMO +40's are a stretch for your goals.

  4. #4
    Mitsu booster
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    Re: Turbo Van Build

    Well it wasnít the head gasket, the top of the piston looks fine but Iím sure the bottom of it is cracked. I kind of figured as much but was hoping for the easy fix.

    On the search for a short block now.

    The car has a flash-able SMEC, currently its tuned for the previous setup which was a t2 garret with basic ported bolt ons and ported head. The tune was good for 22psi on garrret, I had the boost controller set to 10 when driving around with the new setup. I know the tune needs to be adjusted for the new stuff, just figured at a low boost it would be fine.

    I know the ffvís are to small for my hp goal but I already had them from previous setup. Figured I need to break my clutch in and make sure things are sorted, so just kept them in for now.

    Hopefully Iíll find a short block asap, ready to get this dialed in.


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  5. #5
    Mitsu booster
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    Re: Turbo Van Build

    Quote Originally Posted by 4 l-bodies View Post
    Nice build. IMO, FFV injectors are not nearly big enough for your HP goals. I've flowbenched plenty of them and they are no where near +18-20% as some claim. IMO +40's are a stretch for your goals.
    You think +40s are a stretch for a 350 hp goal?
    Serious question.


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  6. #6
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: Turbo Van Build

    Quote Originally Posted by Slam92 View Post
    You think +40s are a stretch for a 350 hp goal?
    Serious question.


    Sent from my iPhone using Tapatalk
    Much over 300WHP and the duty cycle with +40s gets well over 80% very fast. Add in their rating at 55PSI causing a lack of flow out of the pump due to the higher FP, and it's too much to ask IMO. 72 or 85lb injectors at the lower pressure rating are a great way to go.

  7. #7
    Supporting Member II Turbo Mopar Contributor tryingbe's Avatar
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    Re: Turbo Van Build

    Quote Originally Posted by Slam92 View Post
    You think +40s are a stretch for a 350 hp goal?
    Serious question.


    Sent from my iPhone using Tapatalk
    No, +40 is not enough.

    I'm on 1000cc/95lbs injectors, with E54 fuel, I'm at 77% duty cycle at 367whp.

    If you use race gas, 1000cc might be enough. If you use E54-E85, get 1200cc-1600cc injectors for your 400whp goal.
    Tailgate at your own risk.

  8. #8
    Slugmobile & MeanMini Caretaker Turbo Mopar Contributor wheming's Avatar
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    Re: Turbo Van Build

    Quote Originally Posted by Slam92 View Post
    You think +40s are a stretch for a 350 hp goal?
    Serious question.


    Sent from my iPhone using Tapatalk
    I would say you should target something bigger, like 87pph. Unless you plan some high ethanol/e85 usage, then you'll need ever bigger.

    This is all assuming you just want to run a normal, single FPR, and not an additional RRFPR.

    I think with the tuning ability, you may as well get some larger set, and you'll have room to grow.

    I'm a fan of using larger injectors and dropping fuel pressure a bit to take some work off the pump.

    Edit:. I see others have jumped in as I was replying also. Anything in that range should work for you, 85-95pph. And adjust back with fuel pressure if you want to have them flow less.
    They all get rated at 43.5 psi fuel press.

    Sent from my ONEPLUS A6000 using Tapatalk
    Wayne H.

    '91 Dodge Spirit ES 2.5L turbo 5spd
    '05 PT GT 2.4T HO autostick
    '89 Plymouth Acclaim 2.5L turbo auto, "Slugmobile" yes, THE Slugmobile!
    '89 Dodge Caravan SE 2.5L turbo auto, "Mean Mini" yes, Gus' Mean Mini! (Current best 11.7786@113.04 mph! - Jan 15th, 2017 Fayetteville Dragway, NC)
    MeanMini dragracing videos: https://www.youtube.com/playlist?lis...URZLB1RxGYF6vw
    and other cars, trucks and motorcycles
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  9. #9
    Mitsu booster
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    Re: Turbo Van Build

    I agree with the last three comments, i was already planning on getting the 83# deccas from TU when Iím ready to get the tune dialed in. Iím not planning on race gas or e85, so 1000cc+ wonít be necessary for this build. Iíll be adding water/meth injection though for safety sake when the boost gets turned up.


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  10. #10
    Supporting Member II Turbo Mopar Contributor ajakeski's Avatar
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    Re: Turbo Van Build

    Iíve had a few sets of FFV injectors flow matched and they ranged from 34 to 38 pph.

  11. #11
    Mitsu booster
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    Re: Turbo Van Build

    Motors out! Time for a rebuild.




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  12. #12
    Mitsu booster
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    Turbo Van Build

    Shout out to Jackson Simler for building this stout bottom end! Should be here next week and Iíll get going on the re-assembly. Should be able to max out the turbo now at 425-450hp, wasnít planning on it... but things escalated.








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    Last edited by Jon411; 03-05-2021 at 09:15 AM.

  13. #13
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Turbo Van Build

    Before you start turning it up, I can run through the basics of dialing in the fuel with that flashable ECU.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

  14. #14
    Boost, it's what's for dinner... Turbo Mopar Staff Aries_Turbo's Avatar
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    Re: Turbo Van Build

    also with E85, youll want to have a content sensor in the return line and some way to read it so that you can adjust the overall fuel and timing advance since the ECU doesnt have any info to automatically adjust anything.

    Brian

    Quote Originally Posted by turbovanman
    This one is easy, I have myself to blame, I rush things, don't pay attention to gauges when I should, change to much stuff at once then expect miracles, the list is endless.

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