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

  1. #81
    Garrett booster
    Join Date
    Sep 2008
    Location
    South Jordan, utah
    Posts
    236

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

    Quote Originally Posted by turbovanmanČ View Post

    If I was in your shoes, I'd either sell the HE341 and buy an HE351 or simply upgrade the compressor wheel. I think you're wasting time putting the 341 on a TIII.
    Right. After reading through here I wasn't ever considering just the HE341. It was either gonna be an upgraded wheel HE341 or the HE351. But this deal for the HE351 is so good it would hardly be anymore money then doing everything necessary to make the HE341 as good. Probably just end up going with the HE351.

    Concerning the HE351, I was reading in some old threads where Brent had ported the wastegate hole (I understand this) as well as the turbine housing? What is ported in the turbine housing and what is the purpose?

  2. #82
    turbo addict Turbo Mopar Contributor
    Join Date
    Dec 2005
    Location
    Seattle
    Posts
    7,063

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

    Quote Originally Posted by Dan15 View Post
    Right. After reading through here I wasn't ever considering just the HE341. It was either gonna be an upgraded wheel HE341 or the HE351. But this deal for the HE351 is so good it would hardly be anymore money then doing everything necessary to make the HE341 as good. Probably just end up going with the HE351.

    Concerning the HE351, I was reading in some old threads where Brent had ported the wastegate hole (I understand this) as well as the turbine housing? What is ported in the turbine housing and what is the purpose?
    That was an HX40pro with a Bullseye brand mitsubishi 5 bolt exhaust housing that had a very small A/R. Out of production Turbine housing that was kinda sketchy. This setup allowed a seperate dump tube for the wastegate and could use an external gate (no internal flapper) but the OEM hole was not large enough to control boost. The rest of the porting was because the turbine housing was very small compared to the rest of the turbo. It was proven on a DSM to allow big gains over the stock small bullseye housing. It was a bolton for a DSM but not a great combo unmodified.

    Any mods you do to improve top end can hurt response and boost threshold.
    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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