# 44mm wastegates... **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [September 29, 2009, 12:21pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181 "2009-09-29T12:21:36Z")\ **Posts on this page:** 20\ **Page:** 3
**Author:** ![neonpwr98](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@neonpwr98](https://forums.speedlife.net/u/neonpwr98)\ **Post date:** [September 30, 2009, 8:06am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/41 "2009-09-30T08:06:57Z")
> [@travisn](#): > > over spun turbo? I’m not quite sure what you mean by that… ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [September 30, 2009, 8:07am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/42 "2009-09-30T08:07:41Z")
turbo cars are all about flow…na cars usually require some back pressure. On an NA car, bigger exhaust isn’t always better. On a turbo car, you need all the flow you can get. There is a point where you will not benefit from a larger exhaust though. A t25 turboed civic will NOT benefit from a 4" exhaust over a 3". ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [September 30, 2009, 8:08am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/43 "2009-09-30T08:08:20Z")
yeah, that’s more of an turbo efficiency/size issue ---
**Author:** ![travisn](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/travisn/32/5046_2.png) [@travisn](https://forums.speedlife.net/u/travisn)\ **Post date:** [September 30, 2009, 8:15am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/44 "2009-09-30T08:15:47Z")
> [@neonpwr98](#): > > I’m not quite sure what you mean by that… Turbos have a stated max rpm. Going past that ruins bearings and seals. [http://www.not2fast.com/turbo/glossary/turbo\_glossary.shtml](http://www.not2fast.com/turbo/glossary/turbo_glossary.shtml) ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [September 30, 2009, 8:17am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/45 "2009-09-30T08:17:55Z")
you will not over spin a loaded turbo unless it is WAY too small for the application or you have huge boost leaks. ---
**Author:** ![neonpwr98](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@neonpwr98](https://forums.speedlife.net/u/neonpwr98)\ **Post date:** [September 30, 2009, 9:07am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/46 "2009-09-30T09:07:17Z")
> [@travisn](#): > > Turbos have a stated max rpm. Going past that ruins bearings and seals. [http://www.not2fast.com/turbo/glossary/turbo\_glossary.shtml](http://www.not2fast.com/turbo/glossary/turbo_glossary.shtml) Why would the turbo over spin because you removed the exhaust??? ---
**Author:** ![Saxon](https://avatars.discourse-cdn.com/v4/letter/s/59ef9b/32.png) [@Saxon](https://forums.speedlife.net/u/Saxon)\ **Post date:** [September 30, 2009, 10:25am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/47 "2009-09-30T10:25:30Z")
> [@neonpwr98](#): > > Why would the turbo over spin because you removed the exhaust??? it wouldnt ---
**Author:** ![neonpwr98](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@neonpwr98](https://forums.speedlife.net/u/neonpwr98)\ **Post date:** [September 30, 2009, 11:36am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/48 "2009-09-30T11:36:44Z")
> [@alpha earl](#): > > it wouldnt DING DING!!! Your right it wouldn’t. It may spool up a little quicker but it certainly wouldnt over spin JUST by removing the exhaust. ---
**Author:** ![brilliantyellowg60](https://avatars.discourse-cdn.com/v4/letter/b/6f9a4e/32.png) [@brilliantyellowg60](https://forums.speedlife.net/u/brilliantyellowg60)\ **Post date:** [September 30, 2009, 11:41am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/49 "2009-09-30T11:41:54Z")
so lets hear how you feel on dual 38’s 😛 ---
**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\ **Post date:** [September 30, 2009, 11:42am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/50 "2009-09-30T11:42:20Z")
> [@brilliantyellowg60](#): > > so lets hear how you feel on dual 38’s 😛 Twin scroll manifold?? ---
**Author:** ![neonpwr98](https://avatars.discourse-cdn.com/v4/letter/n/6f9a4e/32.png) [@neonpwr98](https://forums.speedlife.net/u/neonpwr98)\ **Post date:** [September 30, 2009, 11:52am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/51 "2009-09-30T11:52:07Z")
My manifold is a twin scroll with a single 44. The way it should be and if I build a new manifold it will be with twin v band 38’s ---
**Author:** ![brilliantyellowg60](https://avatars.discourse-cdn.com/v4/letter/b/6f9a4e/32.png) [@brilliantyellowg60](https://forums.speedlife.net/u/brilliantyellowg60)\ **Post date:** [September 30, 2009, 12:10pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/52 "2009-09-30T12:10:58Z")
> [@newman](#): > > Twin scroll manifold?? of course 😉 ![http://www.smokedtires.com/dubr/kcleary/Rallye/IMG00046.jpg](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/3X/9/e/9ec9551f7a93ec3f6a448eb71d09a6b973540016.jpeg) ---
**Author:** ![dezod](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dezod/32/7467_2.png) [@dezod](https://forums.speedlife.net/u/dezod)\ **Post date:** [September 30, 2009, 12:46pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/53 "2009-09-30T12:46:49Z")
ROFL at this thread ---
**Author:** ![reliant\_turbo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/reliant_turbo/32/7189_2.png) [@reliant\_turbo](https://forums.speedlife.net/u/reliant_turbo)\ **Post date:** [September 30, 2009, 12:54pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/54 "2009-09-30T12:54:26Z")
i have friends with 11 and 10 sec cars with reliable boost control with internal wastegates. Holset HE351 with the factory internal gate ported and another with a precision SC6152S with an internal gate. no problems. Brian ---
**Author:** ![91MR2](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/91mr2/32/7217_2.png) [@91MR2](https://forums.speedlife.net/u/91MR2)\ **Post date:** [September 30, 2009, 1:51pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/55 "2009-09-30T13:51:28Z")
I have no idea what size my wastegates are…nor do I care, haha. ---
**Author:** ![LXIFLYBY](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/lxiflyby/32/7399_2.png) [@LXIFLYBY](https://forums.speedlife.net/u/LXIFLYBY)\ **Post date:** [September 30, 2009, 3:26pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/56 "2009-09-30T15:26:43Z")
> [@reliant\_turbo](#): > > i have friends with 11 and 10 sec cars with reliable boost control with internal wastegates. Holset HE351 with the factory internal gate ported and another with a precision SC6152S with an internal gate. no problems. > > Brian internal gates have their places, and i feel pretty comfortable in saying that your friends must be running high boost or not revving very high, the internal wastegate holes are usually 20mm or less! I ran a T3/T4 with the internal gate on low boost with zero issues on my last setup (2 liter honda) with a stage 1 turbine wheel in a .63 T3 exhaust housing, and it was pretty quick spooling also. Ill have to post up again when i get the new setup running with the SC6152S and 38mm tial, but i dont expect any surprises, even at low boost ---
**Author:** ![reliant\_turbo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/reliant_turbo/32/7189_2.png) [@reliant\_turbo](https://forums.speedlife.net/u/reliant_turbo)\ **Post date:** [September 30, 2009, 7:35pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/57 "2009-09-30T19:35:10Z")
the guy with the holset has it attached to a 2.4L and revs to ~7k. anywhere from 15psi to 28. his is opened up as much as possible and ported so there is a very smooth entrance to the gate from the inlet of the turbine. the other dude has it attached to a 2.5L 8V and only revs to 6-6.5k (4.09" stroke) and runs anywhere from 20-35psi. 10.66 @ 134 in a dodge omni lol. im just saying that 44mm+ arent needed as much as one might think (ie agree with the thread intent) but on my next project ill be using a 38mm tial. hopefully in combination with a holset HE351 VGT. each has its place. 🙂 Brian ---
**Author:** ![Carnut](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carnut/32/7590_2.png) [@Carnut](https://forums.speedlife.net/u/Carnut)\ **Post date:** [October 2, 2009, 9:42am UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/58 "2009-10-02T09:42:00Z")
[http://www.turbosmartonline.com/index.php?id=313](http://www.turbosmartonline.com/index.php?id=313) ---
**Author:** ![ezfd](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ezfd/32/7334_2.png) [@ezfd](https://forums.speedlife.net/u/ezfd)\ **Post date:** [October 2, 2009, 12:04pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/59 "2009-10-02T12:04:32Z")
I think you should run one 60mm gate per runner and vent them out your hood. ---
**Author:** ![vq30de](https://avatars.discourse-cdn.com/v4/letter/v/9dc877/32.png) [@vq30de](https://forums.speedlife.net/u/vq30de)\ **Post date:** [October 5, 2009, 2:58pm UTC](https://forums.speedlife.net/t/44mm-wastegates/74181/60 "2009-10-05T14:58:58Z")
Newman you’re a homo seriously. You didn’t even do awd. You don’t know shit. [Previous page](https://forums.speedlife.net/t/44mm-wastegates/74181.md?page=2) [Next page](https://forums.speedlife.net/t/44mm-wastegates/74181.md?page=4)