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Thread: What is a good turbo upgrade over the T3/T4 50-trim?

  1. #21
    turbo addict Pat's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Agree...drop the gap to find out if that's your problem.

    For reference, I run good old Champion RN9YC's on my T3's without issue. I've run these up to about the 500whp level and haven't found a reason to switch yet. I gap them typically at about .025".

  2. #22
    turbo addict
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    im wondering if you hav some sort of boost leak? maybe one was cause when swapping injectors?

    ive been able to spike a turbo to 20 psi before but it would settle back to about 15 psi because the boost leak was bad enough before I found it, also seamed to surge a little bit too...

  3. #23
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Got a set of NGK BPR9EIX plugs for it today. Can you adjust the gap on these with the right tool? I have a set of the NGK iridium plugs in my Caliber SRT and I don't remember having to adjust the gap as they were perfect right out of the box. They've been in the car for the last 30k+ miles and have worked great.

    We were going to run the Spirit R/T vs CSRT tonight but ran into an issue with the OEM TIII O2 housing studs falling out (again). The car does have some vibes due to the complete set of PB.com motor mounts. Is there a high temp thread locker that could work here? They are 10mm x 1.5 studs/nuts so I would think 40-50 ft lbs should do it.


    Not sure on the possibility of a boost leak. I have a boost leak tester from siliconehoses.com and will have to check. We'll have to loosen the rocker shafts to check all the way to the intake valve though.

  4. #24
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Yes, you can adjust the gap, use the gapping tool with the hole, you hook the ground electrode with that, DO NOT lever on the iridium tip, and pull up, increasing the gap. Then I tap the ground electrode on something solid to reset the gap to where I want it.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

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  5. #25
    turbo addict
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    As Simon has pointed out, setting the gap on iridium and platinum plugs can be done, however, it is not recommended to set the gaps on those plugs simply because of how fragile the small bits of the rare metals are. Part of the reason I only run copper plugs.

  6. #26
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by Reaper1 View Post
    As Simon has pointed out, setting the gap on iridium and platinum plugs can be done, however, it is not recommended to set the gaps on those plugs simply because of how fragile the small bits of the rare metals are. Part of the reason I only run copper plugs.
    I gap iridium all the time, just do it the way I suggested and you'll never have an issue,
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  7. #27
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    He got a Holset HX35W to replace the 50 trim T3/T4. I'm concerned about the divided T3ish turbine housing and also the very restrictive looking internal wastegate housing. I mean, sure, it will bolt up to the manifold..

    The compressor housing outlet is V-band too. Firewall massaging/bashing in order? We already had to trim a little off the A568 to make the 50-trim fit. The compressor housing is larger than I imagined. It is similar to in physical size to a Garret T67 I have here. To give you an idea, the T67 comp housing is so big it uses 8 bolts to attach it to the back plate/center section. I haven't measure them but they are similar in diameter to a soccer ball at least.
    Last edited by iTurbo; 04-29-2015 at 01:39 AM.

  8. #28
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Knife edge the divided housing.

    Which one did he get? The 8 blade compressor wheel flows almost the same as a 50 trim so not much upgrade. Hopefully he has the 7 blade, its almost 60 lb/hr vs the 8 blade around 52 lbs, the 50 trim is 50 lbs from the info I've found.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  9. #29
    Moderator Turbo Mopar Staff Vigo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Not a very big upgrade for the work required.

    Dont push the red button.You hear me?

  10. #30
    Mitsu booster
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    its a 7 blade one

  11. #31
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    A lot of work for not much gain.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  12. #32
    turbo addict Turbo Mopar Contributor
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by Vigo View Post
    Not a very big upgrade for the work required.
    Having a holset myself, I would never use one again. The extra work is not worth it. Its just a turbo. Its not magic. When you start having to buy billet parts and new housings, then the money savings is out the door too. I still can't even find a Vband that fits the He341. I missed the glory days when that stuff was around.
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

  13. #33
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by Ondonti View Post
    I still can't even find a Vband that fits the He341. I missed the glory days when that stuff was around.
    Talk to Shadow and others, they found V bands.
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  14. #34
    turbo addict Turbo Mopar Contributor
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by turbovanmanČ View Post
    Talk to Shadow and others, they found V bands.
    The market for this stuff dried up.
    Looks like
    http://www.ebay.com/itm/HE351-turbo-...ht_3517wt_1124

    I would just cut off one side.

    Could work, this was not available (not being produced) the last few times i have looked over the years. Probably takes a custom order and they make a couple.
    Brent GREAT DEPRESSION RACING 1992 Duster 3.0T The Junkyard - MS II, OEM 10:1 -[I] Old - 11.5@125 22psi $90 [U]Stock[/U] 3.0 Junk Motor - 1 bar MAP [/I] 1994 Spirit 3.0T - 11.5@120 20 psi - Daily :eyebrows: Holset He351 -FT600 - 393whp 457ft/lb @18psi 1994 Spirit 3.0T a670 - He341, stock fuel, BEGI. Wife's into kid's project. 1990 Lebaron Coupe 2.2 TI/II non IC, a413 1990 Spirit 3.0 E.S. 41TE -- 1993 Spirit 3.0 E.S. 41TE -- 1994 Duster 3.0 A543 1981 Starlet KP61 Potential driver -- 1981 Starlet KP61 Parts -- 1983 Starlet KP61 Drag 2005 Durango Hemi Limited -- 1998 Dodge 12v 47re. AFC mods, No plate, Mack plug, Boost elbow -- 2011 Dodge 6.7 G56

  15. #35
    turbo addict
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    ^ and thats without the clamp i think? but it linked to another at the bottom of the page for $91, that seams dang pricey. im wondering if you can just get a stock downpipe and clamp? my friend does diesel exhausts all the time, im sure he has a couple extras laying around...

  16. #36
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Well what do you guys think about this?

    http://www.atpturbo.com/mm5/merchant...egory_Code=TBN

    It's a 61mm compressor/stg III turbo. That means we could reuse the current stg III .72 A/R Cosworth housing and keep the downpipe keeping fabrication to a minimum. The final cost on the turbo should be substantially less than the price listed since he won't need the turbine housing.

  17. #37
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanmanČ's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Honestly Jeremy, he hasn't even tapped out his 50trim, so why is he going bigger?
    1989 FWD Turbo Caravan-2.5 TIII, GT35R, auto, a/c, cruise, pwr windows/locks, fully loaded with interior and ran with full exhaust. RETIRED FOR A FEW YEARS! 12.57@104 :O)
    1984 Chev Getaway van, 6.2 Diesel with a remote mounted turbo setup burning WMO-For sale.
    2003 GSW 2.0L TDI, auto, fully loaded, modified, 360K-wife's.
    2004 GSW TDI, 5 speed, fully loaded, modified.

    Aurora ignition wires for sale. Link to info

    Super60 roller cams or custom/billet cams. Link to info

  18. #38
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Ha I totally agree Simon. Speed is addictive though. I told him if he wants much more he's going to be looking at upgrading manifolds and intercooler and an external gate setup.

    He's already beaten quite a few high HP "new" cars on the highway. If it were still my car I would work on dialing in the TCS system perfectly. The new drag radials helped a lot though.

  19. #39
    Mitsu booster
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by iTurbo View Post
    Ha I totally agree Simon. Speed is addictive though. I told him if he wants much more he's going to be looking at upgrading manifolds and intercooler and an external gate setup.

    He's already beaten quite a few high HP "new" cars on the highway. If it were still my car I would work on dialing in the TCS system perfectly. The new drag radials helped a lot though.
    I agree with ya there jeremy!

  20. #40
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by sl3196 View Post
    I agree with ya there jeremy!
    Don't get me wrong....I'm quite sure the Spirit R/T will roast the Caliber SRT alive at this point. Aside from dialing in the TCS, I would redo the intercooler piping. We've tried to race but failed twice because of blown piping or other problems.

    If he saw the craftsmanship in the various TIII powered cars at the last SDAC, then it would be worth it. I don't mean to sound like a jerk but my first attempt at a BIG intercooler in my SL was not that good either and I wouldn't want to post pictures of it. Just saying. His setup has a lot left in it even with the 50-trim.

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