turbo upgrading

[NJgsx]

I have a td05 20g and i really like the turbo but im going for more power soon ... what do you think is a good upgrade turbo but im thinking of still stayin internal on the wastegate ... what would you guys recomend on a turbo thats bigger but a internal wastegate setup and will work on a mitsu flange

 

[andymoraitis]

If you insist on staying internal, I'd think about an FP Green. The Green is more expensive but packs a hell of a punch and flows more than your 20G. I just don't particularly care for the idea of an internal gate on a larger turbo if you plan to make big boost. The larger wastegate flappers that most shops use won't stay shut at higher boost levels and no amount of shimming seems to help hold reliable boost the way an external gate will.

I'd never go back to an internal.

Just my .02,

Andy

 

[NJgsx]

what about a t04b?

 

[LA97GST]

Thought of converting your TDO5H to the bigger TDO6H?

 

[2gGSX]

I agree with Andy. If you're going to go any larger you'll want to look into an external setup.

 

[Raph]

i have a questin (just upgraded,so i wont be anytime soon) , with the manifold mounted wastgate setups..what do you guys do about your powersteering pumps..i mean it looks as if theres no room left..

 

[andymoraitis]

I had more than enough room with mine using a 38mm external. The only time I hear of potential issues is when using a full T3/T4 setup although many of these fit without issue as well.

 

[SBstar]

What kind of power/times are you running now, the 20G is a very capable turbo.

 

[blcknspo0ln]

what about a t04b?

20g > to4b v trim (or even 50 trim).

I vote for a td06h 20g to suit your needs. Otherwise a ballbearing 50 trim is a nice choice, but will most likely not suit your power level gains sought after.

 

[NJgsx]

now if i do the tdo6 20g ? do i have to do external setup or can i run internall still ..... and with that turbo with the correct mods ? what Hp are they makin and ### are the average 1/4 times ... i mean i knows its all about who the driver is but im just curious ..

 

[2gGSX]

www.dsmtimes.org
The problem with the internal gate is that it has a tendency to blow open early, keeping you from running high boost. The reason most people go external is to better control boost dropoff, especially in the upper RPM range. That being said, any turbo larger than a 16g will generally benefit from having an external wastegate setup.

 

[Kevin Jewer]

I ran 11.84 at 117, with a best trap speed of 119, in my full weight 2g. What it made for power depends on what dyno it would have been put on. I personally try to stick to track times.

I'll also post here what I posted in the other thread, the 20g is rated to 48 lbs/min (I got up to 49 out of mine) and a 50 trim is rated to 50 (I got 50 out of mine). Very similar. This also applies to the Green, since it is a 50 trim, and has a 6H hotside as far as I know.

And yes, if it is at all possible, try to work an external WG into the budget. But with the larger 6H wheel and regular 7cm housing, turbine pressure seems to be manageable for a stock sized WG flapper, I had decent success with the internal before I went external. The difference is an external will simply work, while the internal will require hours of porting to get decent boost levels for pump gas use.

 

[Steve93Talon]

I have a td05 20g

Can you be more specific? Is it a real 20g in a big compressor housing with a TD05H turbine wheel? Or is it a "sleeper/bastard" 20g in a TD05H compressor housing? If it's the first one, it's good for low 11s at well over 120mph (no way I'd bother switching to a 50 trim, virtually the same power). If it's a TD05H compressor housing, then you can just order a TD06 compressor housing with 3" inlet for like $200. That alone will make a huge difference.

As for the internal gate, we set Tort's car up with a 20g/clipped05H internal and it held 30psi to redline no problem. He went 11.02 @ 126.79 on that setup. He then switched to a TD06H hotside and it was laggier and really didnt make anymore power up top (already at the flow limits of the compressor side I'd guess).

 

[SBstar]

Yeah, please don't take this the wrong way, but how much power are you looking for? Like I said earlier the 20G you have is quite capable set up correctly and tuned properly. I'd hate to see you give up on it if you haven't taken it to its capacity. Thats why I asked where you are at currently in terms of hp and/or times. Not saying you shouldn't upgrade, just saying it may be a waste if other mods/tuning would help you stay satisfied with what you have.

 

[eclipsegst3131]

im looking at getting a 20g for an upgrade of my 14b on my 93 tsi. is there any difference between the bastard 20g and the standard 20g and which one will make the greatest power? the price difference between the two is not influential and i dont really car at all if anyone knows the size of my turbo. also, since i plan on staying internal for the gate, i should leave it at the standard size, correct? i've gotten the notion that the larger flapper doesn't hold boost as well. thanks

p.s. sorry for jacking the thread on the original poster.

 

[andymoraitis]

The sleeper and bastard 20G's have large comp wheels stuffed into a TD05 housing. If you want to stay stock appearing that's fine, but the trade off is higher intake temps from using a small cover and potential surge issues. A real 20G with a 3" cover is a better all around performer and worth the investment.

Searching for bastard 20G or Sleeper 16G would have netted you the same info.:

http://www.dsmtuners.com/forums/search.php?searchid=2090883

Just my .02,

Andy

 

[Kevin Jewer]

Another point I don't see brought up often enough is turbine housng pressure, when considering internal gates. For an internal WG, I would rather run a large hotside, as in a 6H 20g. The reduced turbine housng pressre will put less force on the flapper. I ran a 6H 20g and it was probably my favorite street turbo of all time. 25 psi at 3700-3800 rpm, which is hardly more than most 16g setups, and airflow at 48 lbs/min. Larger hot sides also reduce knock tendency as well. Ran on 93 octane all day long with no knock, and 11.9/12.0 at ~116 on that fuel. I guess my point is, if you still have the choice, go with the larger 20Gs, especially if you plan to run internal.

 

[TurboDSMer]

I am currently running the td06h bastard 20g. Reason for running it 1. got a good deal on the turbo. 2. haven't seen any real times with this turbo and would like to see what it can do. I am hoping that i can run an 11.9-12.0 on pump with that turbo and my current set up but we will see.