# ??t3/t4??

**URL:** <https://forums.speedlife.net/t/t3-t4/199798>\
**Category:** PittSpeed Automotive\
**Created:** [September 24, 2008, 2:23pm UTC](https://forums.speedlife.net/t/t3-t4/199798 "2008-09-24T14:23:31Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\
**Post date:** [September 24, 2008, 2:23pm UTC](https://forums.speedlife.net/t/t3-t4/199798/1 "2008-09-24T14:23:31Z")

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whats the difference between the t3 and the t4 flange?

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**Author:** ![martin0660](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@martin0660](https://forums.speedlife.net/u/martin0660)\
**Post date:** [September 24, 2008, 2:32pm UTC](https://forums.speedlife.net/t/t3-t4/199798/2 "2008-09-24T14:32:13Z")

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T4 flange is bigger in all dimensions that the T3 flange. Some T4’s use a divided housing (but not all).

Bob Myers

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**Author:** ![SmokinDiesel](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SmokinDiesel](https://forums.speedlife.net/u/SmokinDiesel)\
**Post date:** [September 24, 2008, 2:39pm UTC](https://forums.speedlife.net/t/t3-t4/199798/3 "2008-09-24T14:39:42Z")

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Yup … Main difference is just a bigger dia. all around

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<div class="post-metadata">

**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\
**Post date:** [September 24, 2008, 3:49pm UTC](https://forums.speedlife.net/t/t3-t4/199798/4 "2008-09-24T15:49:48Z")

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as in ID or just bolt pattern or both?..do they make t4 flanges to weld onto manifolds?

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**Author:** ![SmokinDiesel](https://avatars.discourse-cdn.com/v4/letter/s/57b2e6/32.png) [@SmokinDiesel](https://forums.speedlife.net/u/SmokinDiesel)\
**Post date:** [September 24, 2008, 5:31pm UTC](https://forums.speedlife.net/t/t3-t4/199798/5 "2008-09-24T17:31:49Z")

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No clue about the weld ins … sorry

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**Author:** ![hondacivic946](https://avatars.discourse-cdn.com/v4/letter/h/6de8d8/32.png) [@hondacivic946](https://forums.speedlife.net/u/hondacivic946)\
**Post date:** [September 24, 2008, 5:57pm UTC](https://forums.speedlife.net/t/t3-t4/199798/6 "2008-09-24T17:57:03Z")

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the bolt patterns are different and the t4 is bigger and can make alot more power on it unless you like the to make big power on a little t3 turbo and a little 1.6L 1595CC MOTOR LOL

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**Author:** ![Pewter](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pewter/32/5936_2.png) [@Pewter](https://forums.speedlife.net/u/Pewter)\
**Post date:** [September 25, 2008, 4:19am UTC](https://forums.speedlife.net/t/t3-t4/199798/7 "2008-09-25T04:19:08Z")

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1

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**Author:** ![imported\_gearhead](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/imported_gearhead/32/5957_2.png) [@imported\_gearhead](https://forums.speedlife.net/u/imported_gearhead)\
**Post date:** [September 25, 2008, 6:03am UTC](https://forums.speedlife.net/t/t3-t4/199798/8 "2008-09-25T06:03:24Z")

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t3:  
 ![http://www.forcedinductions.com/images/T3flange.gif](http://www.forcedinductions.com/images/T3flange.gif)

t4:  
 ![http://www.forcedinductions.com/images/T4flange.gif](http://www.forcedinductions.com/images/T4flange.gif)

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<div class="post-metadata">

**Author:** ![bald1one](https://avatars.discourse-cdn.com/v4/letter/b/9de053/32.png) [@bald1one](https://forums.speedlife.net/u/bald1one)\
**Post date:** [September 25, 2008, 8:06pm UTC](https://forums.speedlife.net/t/t3-t4/199798/9 "2008-09-25T20:06:51Z")

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hmm interesting