Debating a Wastegate Conversion

[Majikterror]

I have a PTE 60 trim Internally gated. I'm thinking about taking off the wastegate. And making it Externally gated from the manifold. Is there a way to just switch the 02 housing so the wastegate passage is blocked off or do I have to plug it up? What is the best way to do this and well am I wasting time an money doing this? My wastegate is staying open when it wants to when I drive around. Pretty F-ing annoying. Don't know what is wrong if it is worn out or needs a new spring. It's annoying. I don't like it. Thank you

 

[project_tsi]

You need to disconnect your current WG actuator and have someone weld the WG flapper completely shut, thats the correct way to put it on the manifold. I would def. do it. If I had the extra money, I would convert over to a Tial 38mm on the mani, even w/ a high pres. actuator, it still creeps. Also you could have it installed on the 02 housing, if you want to buy an aftermarket 02 housing. Do to this, your WG flapper needs to be removed, then ported the hell out of to make a big ol hole for it to flow, then the WG is mounted on the 02 dump right after that nice port job. Both way's will do the same thing, just make sure to have if ported out really big in order for it to flow and work to its full potential.

 

[CanadianTSi]

I find high boost and Internal gates don't mix, running 24psi on my 50 trim the gates flutters terribly until about 6k.

 

[Majikterror]

You need to disconnect your current WG actuator and have someone weld the WG flapper completely shut, thats the correct way to put it on the manifold. I would def. do it. If I had the extra money, I would convert over to a Tial 38mm on the mani, even w/ a high pres. actuator, it still creeps. Also you could have it installed on the 02 housing, if you want to buy an aftermarket 02 housing. Do to this, your WG flapper needs to be removed, then ported the hell out of to make a big ol hole for it to flow, then the WG is mounted on the 02 dump right after that nice port job. Both way's will do the same thing, just make sure to have if ported out really big in order for it to flow and work to its full potential.

Will it be stupid to convert? Will I get quicker spool if the WG is on the manifold? Is it even worth the extra money?

 

[Maglin]

The biggest reason you would want to run it off the manifold is because now that exhaust gas doesn't even have to go through the turbo to exit. You don't have to weld the internal gate closed either. If you can adjust your pressent internal wastegate actuator in really far and with the help of either a vise or a strong friend get it back on the internal gate. Their is no way it will blow open then. If it's not adjustable just bend the actuator bracket a tad back and also throw in some washers to shim the actuator back. Both will yield the same results.

I was going to go with cutting and welding the manifold for my 44mm Tial but after looking at the expense I just decided to save up a little cash and buy the DNP manifold and use a good amount of heat wrap on it. It will cost 2x as much but is well worth it as it's equal length and will flow more exhaust which is what I need on the top end when I'm pushing 35+ PSI.

What are your goals? What PSI do you plan to run. If 22 is your answer then just opening the internal wastegate and getting a O2 w/external might be just fine. Cost is about $250-350 depending on where you get yours if you don't have ti custom made. Again DNP external manifold is only $599.

They also have a very nice set up for $1K. Manifold, 38mm Tial External, And Custom O2 that the external dumps back into. That is the best bang for your buck.

 

[Majikterror]

Website please.

Thank you

 

[project_tsi]

You don't have to weld the internal gate closed either. If you can adjust your pressent internal wastegate actuator in really far and with the help of either a vise or a strong friend get it back on the internal gate. Their is no way it will blow open then. If it's not adjustable just bend the actuator bracket a tad back and also throw in some washers to shim the actuator back. Both will yield the same results.

Yeah, but if your going to go all out on a nice true external setup, why even attempt to half-ass the WG passage? Sure, I'm sure your idea will, or has, worked, but why not get rid of the whole internal actuator completely instead of just bending it and adding washers and just making it look like shit? Get it welded shut for a few bucks, if you can't weld, and have the peace of mind of knowing that it will never leak or won't look like shit either.

 

[project_tsi]

Will it be stupid to convert? Will I get quicker spool if the WG is on the manifold? Is it even worth the extra money?

I agree that high boost and internal gates don't mix. I "try" to run 25 psi but even after installing a new high pres. actuator, it still will creep to about 28-29 psi, and yes, I have the sup. mods for it.

No, it would not be stupid to convert. Period. If I had $350 right now, Id order a Tial 38mm gate and send in my Manifold to get to welded w/ the flange. If I ever buy another turbo, I'm not going to waste my time w/ internal gates. They respond slower than external gates and in the long run, like me, just end up getting more money spent on it then its worth.

If you do decide to go external, go w/ it on the manifold. This way, if you ever decide to get another turbo w/ a T3 style ex. flange, and are forced to buy another 02 housing, then you still have the ex. gate setup on the manifold, and don't have to worry about it again, as long as that new turbo has a mitsu style inlet.

Hope this helps in your decision.

 

[never2muchBoost]

wow i didnt even see this thread until now, well anyways i got a tial 38 put on my 2g manifold last night and i love it, lemme tell you it is LOUD, i love it , i adjusted my mbc on my internal way up and got another boost source for my external so it opens before the internal, i got the flapper welded shut on my new turbo im putting on so this is just temporary for a few weeks. all in all i think its grrrrreat,

 

[Maglin]

Yeah, but if your going to go all out on a nice true external setup, why even attempt to half-ass the WG passage? Sure, I'm sure your idea will, or has, worked, but why not get rid of the whole internal actuator completely instead of just bending it and adding washers and just making it look like shit? Get it welded shut for a few bucks, if you can't weld, and have the peace of mind of knowing that it will never leak or won't look like shit either.

True. And It doesn't have to look like crap. Only the person doing said stuff can make it look good or like crap. Why would you ruin the turbine housing? If you do what I said and just save up some money you can get about 75% of it back by just selling the turbine housing with the internal gate. I might have forgot to say that.

 

[project_tsi]

Your running 2 Wastegates right now? Thats probly not the best idea. If you have to drive it like this for a while, do what someone posted above, Just bend or add washers, or whatever, but figure out how to stop that internal gate from opening for the meantime, until you get the new setup on.

 

[never2muchBoost]

Your running 2 Wastegates right now? Thats probly not the best idea. If you have to drive it like this for a while, do what someone posted above, Just bend or add washers, or whatever, but figure out how to stop that internal gate from opening for the meantime, until you get the new setup on.

my internal doesnt open at all, its set way higher than my external, it is only for a little while but it would be no problem if it wasnt. i mean i always like to do shit the right way most of the time so if it was perminent i def would have the internal welded shut but my new hotness going on in a few weeks has it welded shut

 

[project_tsi]

True. And It doesn't have to look like crap. Only the person doing said stuff can make it look good or like crap. Why would you ruin the turbine housing? If you do what I said and just save up some money you can get about 75% of it back by just selling the turbine housing with the internal gate. I might have forgot to say that.

Well, I guess if it works 100% of the time w/ no leaks whatso ever, its a good idea. If you ever need to sell it, throw that internal back on and get another $50 for the turbo.

 

[dalatinromeo]

Is there a way to just switch the 02 housing so the wastegate passage is blocked off or do I have to plug it up?

Yes you can buy an aftermarket O2 housing with the passage from the external WG blocked off or you can buy an 02 housing with a dump tube attached so you can dump the air from the external WG to the O2 housing

What is the best way to do this and well am I wasting time an money doing this?

First no it won't be a waste of money, a great investment in my opinion. Like CanadianTSi said high boost and internal gates don't mix. I would say definetly get the external WG off the exhaust manifold. And have it dumped into the O2 housing, if you don't like the sound of the WG venting the air to the atmosphere.

You can always get someone like SBR to weld a flange for a Tial 38mm WG. Or you can buy the SBR cast manifold(ported ) and it comes already flanged for a WG.

If I were you I would get a SBR cast manifold, Tial 38mm WG(routed into the O2 housing), and an O2 housing from either victory performance or punishment racing.

 

[v8s_are_slow]

http://www.dsmtuners.com/forums/showthread.php?t=188895&highlight=wastegate

 

[m1nd64m3]

To keep my flapper closed I just removed the internal gate and put a washer where the gate attaches to the flapper then tightned the shit out of the screw. So if I ever sell this it can be sold as an internally gated turbo because the flapper is still intact.

Here is a picture. You can see a washer inbetween the housing and the flapper arm.

 

[Majikterror]

Thank you everyone
WTF WTF WTF

 

[99gst_racer]

Will it be stupid to convert? Will I get quicker spool if the WG is on the manifold? Is it even worth the extra money?

Definitely not a stupid idea. I'm currently running external and I swear I'll never go back to internal. With external, wastegate response and overall boost control was dramatically improved. Well worth the few hundred bucks IMO.

PS - I'm running my 38mm Tial off of the manifold, which is where I'd recommend it's placement.