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14b with external wastegate

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Grescht

Grescht

15+ Year Contributor
166
0
Apr 1, 2008
New Kent, Virginia
Ok, so I'm having Creep problems. I've read alot of different things. My Turbo is ported on the wastegate. The guy that had it before me did all of the porting. I've tested my wastegate it all works properly. I'm just getting creep up to like 19psi before i cut fuel cut. It's REALLY really annoying. so i figure i'll go with an external WG setup. Where can i get a manifold for the 14b with an WG flange. or can i mod my stock one? or would going with a bigger flapper be my answer? Thanks
 
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Is your profile up to date? I dont see a ported manifold or ported o2 housing in your mod list, which isnt helping you and is probally your problem.
 
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Grescht said:
Ok, so I'm having Creep problems. I've read alot of different things. My Turbo is ported on the wastegate. The guy that had it before me did all of the porting. I've tested my wastegate it all works properly. I'm just getting creep up to like 19psi before i cut fuel cut. It's REALLY really annoying. so i figure i'll go with an external WG setup. Where can i get a manifold for the 14b with an WG flange. or can i mod my stock one? or would going with a bigger flapper be my answer? Thanks
Click to expand...

Hey,
You can port out your o2 housing and w.g. to solve your creep issues on the 14b and save money. It has been discussed many times before

http://www.dsmtuners.com/forums/art...ep-porting.html?highlight=boost+creep+porting
http://www.dsmtuners.com/forums/bol...ep-porting.html?highlight=boost+creep+porting


If you still are set on getting an external gated setup I am not against that either as Iam planning on putting one on my e316g also in the near future for more precise boost control, and for quicker spool and the more boost possible with using the stiffest spring available.
SBR sells a manifold that allows an external gate to be equipped to it, but I dont recommend you get a external gate setup that goes off of the manifold. Preferably the o2 housing like the Home pieces which are a good deal.

More internal vs external gate info.

http://www.dsmtuners.com/forums/new...tml?highlight=external+waste+gate+on+manifold
http://www.dsmtuners.com/forums/new...tml?highlight=external+waste+gate+on+manifold
 
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greddyturbo19 said:
i have never heard of using an external wastegate on a turbo with a internal already in it. you should upgrade that stock turbo to a evo III 16g turbo. :thumb:
Click to expand...

16g turbos use an internal wastegate just like the 14b ROFL


To the original poster: Porting out your o2 housing will be the most cost efficient solution - you can also get a tubular o2 housing which flows better(I have one for sale pm me If you are interested)

But if money is not an issue and you wish to run an external setup, do some searching here to see what people have done. You can weld the flapper shut and modify your exhaust manifold to accept an external gate. Or you can use an o2 housing that accommodates an external wastegate like some vendors sell.
 
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fwdmaster said:
just port out your o2 and wg area so the flapper can open all the way, worked on my ported 14b
Click to expand...
You wasted your time.

Did you bother to check the actual arm travel of the Mitsu actuator before you spent an hour grinding the housing so the flapper can open all the way? ALL Mistu actuators only allow the flapper to open about 3/4".
 
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jusmx141 said:
You wasted your time.

Did you bother to check the actual arm travel of the Mitsu actuator before you spent an hour grinding the housing so the flapper can open all the way? ALL Mistu actuators only allow the flapper to open about 3/4".
Click to expand...

really? I have a evo3 hotside that was already ported and the flapper was able to open all the way,but I didn't know that the actuator limited the flapper to open only 3/4,thanks for this info
 
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Unfortunately shops who perform that mod (grinding the housing so the flapper can "open all the way") and are ripping off us DSM'ers.

Just for kicks, use a blowgun and an air compressor with an inline regulator set to 20psi to open the actuator sometime (remove the vacuum line going from the MBC to the actuator and blow compressed air into it.) You'll be amazed with what you find.
 
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Yep. The "mr peepers mod" is the only remedy for this. IF, and a big IF, an external gate solves your boost creep issues, then the peepers mod is all you need and is FAR cheaper. I suggest Matt (Mr. Peepers) do it. He does a good job :p . And most don't have access to a welder to even practice enough to do this without having a leak. It's still cheaper.

FIRST. Do this: disconnect your wastegate actuator arm from the wastegate flapper arm. If you're still getting boost, then an external gate is a $300+ waste. You will still have the identical creap issue. You then realize that you have to free up the path from the scroll to the wastegate. This means porting the transition to the flapper. And in most cases widening the hole. If you're going to run external gating anyway just port the hole to the diameter of your external gate diameter. If you're going to be more practical, then open it up so that a 34mm flapper can still seal and install one.
 
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Hm I got a tial 38mm wastegate sitting next to me. Maybe I should do this to my 14b. Anyone else ever done this?
 
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why would a Ex. WG on the manifold have anything to do with the fact that my In WG isn't letting enough gasses out. I took off my actuator arm and it boosts to about 2psi then all of a sudden, BAM she's flying up to 18. MY wastegate hole and whole turbo has been throughly ported. The guy i bought it from said my creep issues are from not having my exhaust silencer in, which makes sense. but he ported it and didn't have probs with the silencer in. wouldn't an external WG on the 02 housing not make a whole lot of sense if the Internal one isn't letting enough gas out to begin with? I might try an 02 dump. My dad is an excellent welder so i think we can ghetto rig one. can i run the car with the o2 off? to see if it will fix my prob before i go through the trouble of welding it or buying a new one?
 
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Without an o2 housing you have no place for your o2 sensor. No o2 sensor your car will run pig rich. An external wastegate off the o2 will basically work just like your internal but with the ability to let more gases flow out and a more precise control of boost.
 
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So should i try and ghetto rig a dump on my stock o2 housing first before i do anything? that would ###### be the cheapest seeing as the WG hole is supposedly already ported. "according to the guy i bought it from" What all entails taking it off to check it. Do i need to drain the oil and coolant like i read somewhere else?
 
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The best thing to do, if you dont care about cost, is to just weld shut the flapper in your exhaust housing. Put on an aftermarket manifold that has an external wastegate port and just run an externall gate. External gating is the most reliable way to hold boost.
 
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Grescht said:
why would a Ex. WG on the manifold have anything to do with the fact that my In WG isn't letting enough gasses out. I took off my actuator arm and it boosts to about 2psi then all of a sudden, BAM she's flying up to 18. MY wastegate hole and whole turbo has been throughly ported. The guy i bought it from said my creep issues are from not having my exhaust silencer in, which makes sense. but he ported it and didn't have probs with the silencer in. wouldn't an external WG on the 02 housing not make a whole lot of sense if the Internal one isn't letting enough gas out to begin with? I might try an 02 dump. My dad is an excellent welder so i think we can ghetto rig one. can i run the car with the o2 off? to see if it will fix my prob before i go through the trouble of welding it or buying a new one?
Click to expand...

That's what I was saying. I was talking about an o2 housing mounted wastegate. It's not effective in your case because the port job was incorrectly done or simply not enough. Mounting an external at the 02 housing WILL NOT offer any more flow, without porting the original flapper hole in the turbine housing to a larger diameter. After enlarging the flapper hole, this will be like putting on a larger flapper. But cost much more money. You will have better boost control, but if you don't want to run very high boost, upgrading the flapper and matching a new hole diameter is just as effective. It just may blow open if you try to run over 20 psi.

Porting or a larger flapper is FAR more affordable than an external gate and whole new manifold or having a WG flange welded to your current one. If your port job didn't help, then just upgrade to the larger flapper. This is the best option. It even costs less than the flanges for an o2 dump housing. And is nearly a guaranteed fix. The o2 dump has been known NOT to work more than a few times in the past.
 
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:thumb: ok Sounds good. I think i will go with the bigger flapper on this one, because i see a new set of tires in my near future. I've heard 34mm? and all the installation would require is taking the turbine housing off and grinding the hole bigger so the flapper still seals but wont blow through? Sounds like a plan. Would i still need the o2 dump? and does the o2 dump with a big flapper sound like an external gate in a way? Thanks alot guys.:dsm:
 
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You may want to take the turbine housing off first just to see if it was actually ported or not, then if it was ported for boost creep or just removing the step.

Simplest way I've found to remove the turbine housing from a 14b while it's still on the car:
http://www.dsmtuners.com/forums/newbie-forum/289309-boost-creep-s16g-ported-o2.html#post151458282
Post #4

Post a pic up of the turbine housing inlet and we'll be able to tell you if it was ported and for what purpose- you may not even need the 34mm flapper.
 
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I don't really think i wanna screw around with re porting the turbo and what not. and plus i plan on upgrading the turbo eventually. so i still think the external WG is what i WANT to do, i just gotta see if money will let me do it. because that will be the sure fire way to eliminate the creep. and i dont have to worry about the flapper blowing through the hole. I've found used tials for 175 shipped and i can weld the flange on myself. What else is there to do besides that? weld my internal shut and take off the actuator? not a biggie. am i missing something here? but everyone says the EX WG is super expensive. If i had to buy a new manifold i could see it...
 
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and where could i get a flange to weld it on the manifold? I've seen pics of 97gstracers (<i think thats right) and his looks awesome. I know he got his done by SBR but i think i could do it. It only involves cutting a hole and welding the flange on.
 
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