# External Wastegate size for SR **URL:** \ **Category:** SON240sx Automotive\ **Created:** [May 8, 2007, 9:56am UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365 "2007-05-08T09:56:00Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\ **Post date:** [May 8, 2007, 9:56am UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/1 "2007-05-08T09:56:00Z")
What size external wastegate would you say is a good size for our SR’s? And… Anyone have success installing an external wastegate onto the stock manifold? Thanks ---
**Author:** ![Happy240sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/happy240sx/32/5515_2.png) [@Happy240sx](https://forums.speedlife.net/u/Happy240sx)\ **Post date:** [May 8, 2007, 10:20am UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/2 "2007-05-08T10:20:23Z")
Well, gates are typically more expensive as they grow in size. I have run a 38mm gate and this year will be running a 44mm. Obviously flow capacity is of concern but so if flange design. 38mm use a two bolt flange 44mm use v-band style ---
**Author:** ![Gonad](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/gonad/32/5481_2.png) [@Gonad](https://forums.speedlife.net/u/Gonad)\ **Post date:** [May 8, 2007, 10:20am UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/3 "2007-05-08T10:20:28Z")
38mm is a good start ---
**Author:** ![robbbby](https://avatars.discourse-cdn.com/v4/letter/r/b19c9b/32.png) [@robbbby](https://forums.speedlife.net/u/robbbby)\ **Post date:** [May 8, 2007, 6:47pm UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/4 "2007-05-08T18:47:41Z")
What are your goals? FullRace guys says tial 44 for any setup although you can obviously get away with a 38 on a smaller turbo. And I have successfully run a gate on a stock manifold, worked really well in fact. I actually still have the manifold if you are interested, all you would have to do is bolt the gate on. ---
**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\ **Post date:** [May 8, 2007, 7:52pm UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/5 "2007-05-08T19:52:15Z")
> [@FIOS in the area?!?!](https://forums.speedlife.net/t/fios-in-the-area/12417/14): > > Well, gates are typically more expensive as they grow in size. > > I have run a 38mm gate and this year will be running a 44mm. Obviously flow capacity is of concern but so if flange design. > > 38mm use a two bolt flange > 44mm use v-band style Hey guys, thanks for the replies. with a bottom mount GT28RS turbo, and stock manifold, would it be a good idea to use the vBand mount on a 44mm if the intent is to reroute the exhaust back into the turbo dump pipe? I mean, do I need another manifold or can vband be mounted onto it? Woudl there be enough space for welding a flange? Thanks John ---
**Author:** ![Souljourner](https://avatars.discourse-cdn.com/v4/letter/s/a88e4f/32.png) [@Souljourner](https://forums.speedlife.net/u/Souljourner)\ **Post date:** [May 8, 2007, 7:56pm UTC](https://forums.speedlife.net/t/external-wastegate-size-for-sr/106365/6 "2007-05-08T19:56:47Z")
> [@Giant Flying Squirrels](https://forums.speedlife.net/t/giant-flying-squirrels/12477/2): > > What are your goals? > > FullRace guys says tial 44 for any setup although you can obviously get away with a 38 on a smaller turbo. > > And I have successfully run a gate on a stock manifold, worked really well in fact. > I actually still have the manifold if you are interested, all you would have to do is bolt the gate on. Goal? 350rwhp, very good throttle response. perhaps full boost before 3500rpm at 15psi and does not creep Actually, I would like that. Do you have any pics?