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

  1. #41
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by OmniLuvr View Post
    ^ 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...
    There is a 96 dollar one but the Vband clamp looks aftermarket so I wouldn't trust that........

    I don't know how weldable the stock flange/downpipe is. I would love one.
    http://www.ebay.com/itm/EXHAUST-ELBO...r#ht_25wt_1261
    Refurbished downpipes and clamps.

    Seems like the stuff on ebay for He351's is way up from what it was. Maybe a few new sellers are on there.

    http://www.ebay.com/itm/Dodge-5-9-Co...ht_1561wt_3434
    Last edited by Ondonti; 05-03-2015 at 06:43 AM.
    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

  2. #42
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by iTurbo View Post
    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.
    Why wouldn't you just ship them your current turbo and have them upgrade the compressor wheel and modify the cover?
    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

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

    Quote Originally Posted by Ondonti View Post
    There is a 96 dollar one but the Vband clamp looks aftermarket so I wouldn't trust that........

    I don't know how weldable the stock flange/downpipe is. I would love one.
    http://www.ebay.com/itm/EXHAUST-ELBO...r#ht_25wt_1261
    Refurbished downpipes and clamps.

    Seems like the stuff on ebay for He351's is way up from what it was. Maybe a few new sellers are on there.

    http://www.ebay.com/itm/Dodge-5-9-Co...ht_1561wt_3434
    I have a few of those cast elbows, you can have one if you want, pay for shipping and next time I am down, buy me lunch,

    Quote Originally Posted by Ondonti View Post
    Why wouldn't you just ship them your current turbo and have them upgrade the compressor wheel and modify the cover?
    Agreed.
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  4. #44
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    I will mention it to him because just changing the compressor could be cost-effective. But serisouly, Simon didn't you have a bad experience with the T04E 60-trim? What kind of comp wheel would you guys suggest?

    The 61mm wheel seems to be good for at least 500 WHP @ 30 psi as evidenced by Larry's dyno video (a Precision 6152S). However, I remember getting a ride in Jackson's green IROC R/T last SDAC and it was terrrifyling fast at 40 psi. I think it was a Holset HE 341? I mean jesus that car scared the ---- out of me scorching the tires at over 100 MPH!

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

    Quote Originally Posted by iTurbo View Post
    I will mention it to him because just changing the compressor could be cost-effective. But serisouly, Simon didn't you have a bad experience with the T04E 60-trim? What kind of comp wheel would you guys suggest?

    The 61mm wheel seems to be good for at least 500 WHP @ 30 psi as evidenced by Larry's dyno video (a Precision 6152S). However, I remember getting a ride in Jackson's green IROC R/T last SDAC and it was terrrifyling fast at 40 psi. I think it was a Holset HE 341? I mean jesus that car scared the ---- out of me scorching the tires at over 100 MPH!
    60 trim To4e was known to have surging problems on 2.4L heads, especially because people tended to combine it with small turbine housings/wheels (like a .48 stage II with 60 trim kinda setup). 60 trim doesn't have a very forgiving compressor map. The 50 trim is a very versatile compressor wheel that doesn't need to be as well matched.

    He341's are underwhelming. Really needs the larger compressor wheel.
    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

  6. #46
    turbo addict Pat'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
    60 trim To4e was known to have surging problems on 2.4L heads, especially because people tended to combine it with small turbine housings/wheels (like a .48 stage II with 60 trim kinda setup). 60 trim doesn't have a very forgiving compressor map. The 50 trim is a very versatile compressor wheel that doesn't need to be as well matched.

    He341's are underwhelming. Really needs the larger compressor wheel.
    I admit, I haven't read the whole thread but I'll share my thoughts. Upgrading from the tried and true 50 trim is difficult. There are options out there, but it seems to me that once you go more than the 50trim or a 50trim like turbo, you start to get into the area where you are making a switch from a strong general purpose turbo that gives good power even down low and in the mid range to something that really starts to push the power band to the right. I have a hard time moving away from a 50 trim only because for the money, it's still a ridiculously good turbo that when set up right can do 400+ on our motors. My best pass on just boost with a stock T3 motor with a mild cal in a somewhat lightened Shadow was 10.97 @ 129.99 on a 50 trim stage 3. With a better motor set up, I'm sure it could have done better (as Warren has shown!), but bang for the buck, I think that's hard to beat.

    I'm sure that there are other turbos out there now that can keep a similar torque curve down low while picking up more up top, but how much you'd spend to get that is really dependent on what you're trying to achieve with the car.

    On a similar topic, Brent, I'm curious on your thoughts on the HE341?

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

    I re-skimmed through the thread, but are there any track or dyno numbers for this car available to indicate if the the 50trim has come close to it's full potential?

    I'll echo Pat's thoughts on the 50 trim. It's really a good turbo for a dual purpose car. Once you go bigger than that, you really start to move farther away from pleasant street manners.... unless you start looking at more expensive options, like the GTX series Garretts.
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by iturbo View Post
    i will mention it to him because just changing the compressor could be cost-effective. But serisouly, simon didn't you have a bad experience with the t04e 60-trim? What kind of comp wheel would you guys suggest?

    The 61mm wheel seems to be good for at least 500 whp @ 30 psi as evidenced by larry's dyno video (a precision 6152s). However, i remember getting a ride in jackson's green iroc r/t last sdac and it was terrrifyling fast at 40 psi. I think it was a holset he 341? I mean jesus that car scared the ---- out of me scorching the tires at over 100 mph!
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by iTurbo
    I will mention it to him because just changing the compressor could be cost-effective. But serisouly, Simon didn't you have a bad experience with the T04E 60-trim? What kind of comp wheel would you guys suggest?

    The 61mm wheel seems to be good for at least 500 WHP @ 30 psi as evidenced by Larry's dyno video (a Precision 6152S). However, I remember getting a ride in Jackson's green IROC R/T last SDAC and it was terrrifyling fast at 40 psi. I think it was a Holset HE 341? I mean jesus that car scared the ---- out of me scorching the tires at over 100 MPH!
    Yes, the 60 trim surged badly. The 50 trim is a good turbo, I was happy with it until it let go. I didn't like the lag though, would have like to have put a .48 housing on the stage III wheel.

    The HE351 is bigger, 60mm compressor wheel, seems to be a good turbo, not as much lag and stupid top end. I think DJ maxed his out at 550 whp. I would like to try one but sold all mine, but looks like I am going to put a GTX35R on, I am basically being given one and run a .63 housing.
    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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  10. #50
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by Pat View Post
    I admit, I haven't read the whole thread but I'll share my thoughts. Upgrading from the tried and true 50 trim is difficult. There are options out there, but it seems to me that once you go more than the 50trim or a 50trim like turbo, you start to get into the area where you are making a switch from a strong general purpose turbo that gives good power even down low and in the mid range to something that really starts to push the power band to the right. I have a hard time moving away from a 50 trim only because for the money, it's still a ridiculously good turbo that when set up right can do 400+ on our motors. My best pass on just boost with a stock T3 motor with a mild cal in a somewhat lightened Shadow was 10.97 @ 129.99 on a 50 trim stage 3. With a better motor set up, I'm sure it could have done better (as Warren has shown!), but bang for the buck, I think that's hard to beat.

    I'm sure that there are other turbos out there now that can keep a similar torque curve down low while picking up more up top, but how much you'd spend to get that is really dependent on what you're trying to achieve with the car.

    On a similar topic, Brent, I'm curious on your thoughts on the HE341?
    The problem with the newer turbos is the people installing them. When you compare the modern turbos at the same size, expecting both spool improvements AND more power, you will be disappointed. What I have seen from a lot of these turbos is that they make a lot more power at the same size, but people's egos probably lead them to feel like they still have to go bigger when upgrading to a higher end turbo. This is just wrong. If you want more power, get the same size. If you want faster spool but the same power, get a smaller modern turbo. Also, many of the improvements of billet turbos are in the ability to create higher pressure ratios, so if you were not maxing out the pressure ratio of the old turbos, you don't care much about that beyond a few pitiful points of efficiency improvement (a few degrees cooler charge).


    The He341....it doesn't feel balanced.

    To be honest, I don't know what my dinosaur cast pt6765 feels like at sea level, just high elevation, but on a stock 3.0 longblock the he341 at sea level only feels a little bit quicker to turn on, and its MUCH MUCH smaller. I think even the dyno shows this. 56mm is not a small turbo but IMO it should feel night and day different from a 67mm compressor 65mm t4 turbine. It doesn't.

    On an Hx40 turbo I had done work on the turbine housing but I feel like doing that would be pointless on an He341 due to the small compressor wheel. I think the 60mm wheel would probably function a lot better, which is probably why they changed the compressor wheel on the He351 and left the turbine side alone for quite a few years of production. I think I am kinda stuck with the He341 on my daily because its compressor housing has that quick 90 degree on it that let me keep the stock battery location.
    They sell up to 72mm billet wheels for he341 and he351 covers but those turbos are all about high pressure ratios IMO and a lot of them require center section machining. It does seem like there are some larger turbine wheel options but what I read was very vague. That would be cool for people pushing the He351. Spending all that extra money on a "cheap" turbo kills the cheap part. You can get journal bearing billet turbos without the hassle or odd parts availability + off the wall custom parts suppliers.

    If I summarized my thoughts on the He341, I would simply say that it doesn't move enough air per revolution for how much energy it takes to spin up. Not sure if the he351 60mm has the same exducer because that would mean the wheels weigh almost the same but one moves way more air with the same effort on the turbine wheel.
    Last edited by Ondonti; 05-06-2015 at 10:40 AM.
    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

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

    Quote Originally Posted by Ondonti View Post

    If I summarized my thoughts on the He341, I would simply say that it doesn't move enough air per revolution for how much energy it takes to spin up. Not sure if the he351 60mm has the same exducer because that would mean the wheels weigh almost the same but one moves way more air with the same effort on the turbine wheel.
    A/R- 0.65
    Compressor inducer- 60mm
    Compressor exducer- 84.582mm
    Compressor trim- 54
    Turbine inducer- 65mm
    Turbine exducer- 58mm
    Turbine trim- 80

    The super HX40 is 60x86 which is what compressor wheel I run in my diesel van. The HE341 is the same as the 351, just a 56x76 compressor wheel, so upgrading to the larger comp wheel is pretty easy. I went from a HX35 7 blade-same size as the 341 wheel, to the hx super 40 wheel. The difference was quite dramatic and very noticeable, even over a factory 56mm billet wheel, which was noticeable over the 56mm HX35/341 wheel.
    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)
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    2004 GSW TDI, 5 speed, fully loaded, modified.

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  12. #52
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by turbovanmanČ View Post
    A/R- 0.65
    Compressor inducer- 60mm
    Compressor exducer- 84.582mm
    Compressor trim- 54
    Turbine inducer- 65mm
    Turbine exducer- 58mm
    Turbine trim- 80

    The super HX40 is 60x86 which is what compressor wheel I run in my diesel van. The HE341 is the same as the 351, just a 56x76 compressor wheel, so upgrading to the larger comp wheel is pretty easy. I went from a HX35 7 blade-same size as the 341 wheel, to the hx super 40 wheel. The difference was quite dramatic and very noticeable, even over a factory 56mm billet wheel, which was noticeable over the 56mm HX35/341 wheel.
    Sounds like you have a 56mm billet wheel to ship me.
    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

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

    Quote Originally Posted by Ondonti View Post
    Sounds like you have a 56mm billet wheel to ship me.
    LOL, why? The HX40 wheel is miles better and they are dirt cheap on Ebay.

    Send me your cover and I'll get it machined. I'll dig up the size of my billet wheel, I believe its 56x84 but gotta double check.

    I have a 66x86mm wheel to try,



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

    Quote Originally Posted by turbovanmanČ View Post
    LOL, why? The HX40 wheel is miles better and they are dirt cheap on Ebay.

    Send me your cover and I'll get it machined. I'll dig up the size of my billet wheel, I believe its 56x84 but gotta double check.

    I have a 66x86mm wheel to try,



    Why can't you support my quest for a lazy no machine work upgrade
    Driving my wife's car in the summer waiting on Canada would be a challenge.
    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

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    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?

    Thanks for all the thoughts/info/opinions. I do appreciate it because I am also building another Spirit R/T of my own. It's my white R/T that is getting a 2.5L shortblock and will start out with a GN turbo. We can discuss that later.

    The red Spirit R/T spools up just fine even with 50-trim/stg III and a .72 A/R turbine housing. Surprised the hell out of me but it is very driveable and dynamite on the street. He hasn't taken it to the track or a dyno as far as I know. I don't think he has taken the boost much above ~20 psi @ WOT either. It's running a grainger valve controller that I made. I had a local machine shop rebuild the cylinder head (stock) with Ti valve spring retainers and I build the shortblock myself in our shop at work. I'm just flabergasted at how fast this car has become already, especially being it's the first block I had ever built.




    In it's last incarnation, this car was sporting a LWP ported exhaust manifold, stock turbo, LWP stage I cams, and an A568/A523 hybrid trans with OBX LSD and a 3.50 final drive. The performance back then was pure dogshit compared to what it is now. It's just amazing how far this car has come. Going back to a stock A568 and stock cams and the 50-trim have yielded serious benefits. It has stock cam gears as well now, rather than all the monkyeing around with the adjustable gears I tried so hard to dial in before.
    Last edited by iTurbo; 05-10-2015 at 02:02 AM.

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

    Quote Originally Posted by Ondonti View Post
    Why can't you support my quest for a lazy no machine work upgrade
    Driving my wife's car in the summer waiting on Canada would be a challenge.
    You'd be down a couple weeks, it will man you up,
    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

  17. #57
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    Quote Originally Posted by iTurbo View Post
    Thanks for all the thoughts/info/opinions. I do appreciate it because I am also building another Spirit R/T of my own. It's my white R/T that is getting a 2.5L shortblock and will start out with a GN turbo. We can discuss that later.

    The red Spirit R/T spools up just fine even with 50-trim/stg III and a .72 A/R turbine housing. Surprised the hell out of me but it is very driveable and dynamite on the street. He hasn't taken it to the track or a dyno as far as I know. I don't think he has taken the boost much above ~20 psi @ WOT either. It's running a grainger valve controller that I made. I had a local machine shop rebuild the cylinder head (stock) with Ti valve spring retainers and I build the shortblock myself in our shop at work. I'm just flabergasted at how fast this car has become already, especially being it's the first block I had ever built.




    In it's last incarnation, this car was sporting a LWP ported exhaust manifold, stock turbo, LWP stage I cams, and an A568/A523 hybrid trans with OBX LSD and a 3.50 final drive. The performance back then was pure dogshit compared to what it is now. It's just amazing how far this car has come. Going back to a stock A568 and stock cams and the 50-trim have yielded serious benefits. It has stock cam gears as well now, rather than all the monkyeing around with the adjustable gears I tried so hard to dial in before.
    Very few people with 3.50 swapped transmissions understand why they are doing it. They are going the wrong way, especially on a high reving motor. Your car would have to be really slow to have the swap to 3.50 gears help your 1st gear traction.
    People really seem to obsess about 1st gear. Me, I just shift.

    If you want a really really fun transmission, get a 3.50 transmission and put 3.85 ratio into it.
    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

  18. #58
    turbo addict
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    Re: What is a good turbo upgrade over the T3/T4 50-trim?

    In it's last incarnation, this car was sporting a LWP ported exhaust manifold, stock turbo, LWP stage I cams, and an A568/A523 hybrid trans with OBX LSD and a 3.50 final drive. The performance back then was pure dogshit compared to what it is now
    was it a 2.2 or a 2.5 then? could be a big difference... and did you ever check for a boost leak yet to figure out the pressure problem? it might not even need a turbo yet...

  19. #59
    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
    Very few people with 3.50 swapped transmissions understand why they are doing it. They are going the wrong way, especially on a high reving motor. Your car would have to be really slow to have the swap to 3.50 gears help your 1st gear traction.
    People really seem to obsess about 1st gear. Me, I just shift.

    If you want a really really fun transmission, get a 3.50 transmission and put 3.85 ratio into it.
    Mines going to be a screamer again but I want decent highway cruising rpm. I can put up with it being a bit off a dog around town.
    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

  20. #60
    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
    Mines going to be a screamer again but I want decent highway cruising rpm. I can put up with it being a bit off a dog around town.
    The difference between 3.77 3.85 and the 3.5 on final gear is .01 for 5th gears and its only 3-4mph different, or like 100-200 rpms. Even with 22" tires I don't know what 3000 rpms sounds like on a normal 10mph over on the freeway drive to work. You had a 3 speed and fluffy converter and now rpms is a problem Kinda like how I tried to save 1 mpg by lean burning at cruise and saved 20 dollars in fuel over a year then nuked a motor on a hill by accidentally getting into part throttle boost in closed loop.
    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

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