20g

[RX73Rotorj]

Does anybody have any info on the 20g both TD05 and TD06? And does anybody have any info on the 18g? Thanks

 

[bjw24]

If you search theres a huge debate going on about forcedperformances new 18g turbo. Looks like a reasonable turbo without the lag of a 20g and major potential but you would have to search that for yourself don't be afraid of the search button

 

[RX73Rotorj]

I searched 20g and 18g and nothing came up.

 

[fastfour]

yea dont bother with the tdo5 20g, just go w/ td06 on both sides...

 

[RX73Rotorj]

Yeah i kind of figured to just go with the TD06 instead of the TD05 but what are the differences.

 

[thekellbeast]

The difference between TD05 and TD06 is that they're different turbine wheels/housings. The 06 is a bigger housing and wheel, and can flow a lot more exhaust before choking out. That basically means it's more efficient at boosting up, and in turn can push higher boost levels at lower heat. It's also easier to hit the max rating of the turbo, since you're not limited by the turbine size. The 18g and 20g are both available in Td05 and Td06. I have the Td05 18g, and I'd much rather have the Td06 20g.

The main difference that you'll hear people talk about on sites like this, is lag. With a bigger turbine side, it's going to require more exhaust to fill up and spin the turbine wheel. I suppose when you rate a turbo by its lag in terms of a few hundred rpm, you're a sissy. There are people out there running turbos that don't spool until 5 or 6k. THAT's lag.

Another thing to consider is that when you start getting to the power levels of that a Td06 20g will push, is that you're probably better off switching to an external wastegate.

FP's new 18g (Tdo6) is rated at 400whp. That's straight from their website. It's also standard with an internal wastegate, all for 700. FP's 20g line ranges from 1050 to 1265, and none of those come with an internal wastegate. It's a $100 option. The 38mm external gate is $200, and a housing is between 200 and 300. That just got expensive, fast. The good part though, is that the 20g is rated at 450whp.

 

[NATAS]

IMHO the 20g is becoming somewhat of a dinosaur. I am not saying it's a bad turbo at all or any variations of it for that matter, but I do believe that for the money you can get your hands on something just as good if not better. Nowadays with all the bolt-on turbos from AGP, Precision, Bullseye, etc us buyers have more options for larger turbos without having to swap out our manifold and o2 housings.

A td06h 20g is $1000 or more new. That's set-up for external, so you have to either drop $200 for the internal gate set-up or $150-$400 for an external set-up depending on how and where you install it. For less than $850 you can get any of Precision's bolt-on journal bearing turbos that make excellent power on pump gas and are all you need for a daily driven car. Yes, you do have to block off your coolant lines and run a different oil feed/return fittings but that's sofaking easy it's ridiculous.

I'm just making sure we don't forget about some of the other stuff available. The 20g is very capable, but expensive and not any more impressive than a bolt on PTE 50 trim or RS49. I kind of feel like a hypocrite because I run a Green which is a 20g variant, but I bought the damn thing awhile ago before all these Garrett bolt-on variations were so widely and cheaply available. Good luck on whatever you decide to do. Hell, you can even get a bolt-on ball bearing 60-1 for $925 and that's quite the monster for a pump gas car. Then again, $900+ for a turbo that you can't really rebuild is a whole nother story haha.

 

[thekellbeast]

Where can you get the 60-1 BB for 925? All of the bolt-on ball bearings that I've seen go for upwards of 1100. That 60-1 isn't going to come with a wastegate setup either. Like most turbos that size, you're going to have to cough up the extra 100 for internal or ~400 for an external setup.

I actually really like the 20g, and it's one of the (many) setups that I'm considering running for my next turbo.

 

[bjw24]

I got a price from customssi.com on the scm5031re ball bearing turbo for 1150 with the ssline , flange, and elbow for 1150 shipped.. also was internally gated and had the wastegate included.. I would probably run external for this big of a turbo though but still 1150 is pretty cheap for a ballbearing considering the 20g is like ... right around 1,000ish

 

[RX73Rotorj]

Yeah but im pretty sure the 20g will last a long time it is a mitsubishi turbo and the 14b and 16g came stock on cars and they have lasted a while.

What are the a/r's and comp sides etc for the 20g?
What are the a/r's and comp sides etc for the 18g?

 

[NATAS]

Yeah but im pretty sure the 20g will last a long time it is a mitsubishi turbo and the 14b and 16g came stock on cars and they have lasted a while.

What are the a/r's and comp sides etc for the 20g?
What are the a/r's and comp sides etc for the 18g?

Mitsu turbos=no A/R. It's either td05h or td06h or td06. Just look at the compressor maps. That should get you the info you need.

 

[fastfour]

Buying the mitsubishi = reliability. period

IMO Id rather spend 200 bucks more and have a turbo that is not going to fail and is proven rather than a garrett or someones garage version of a hybrid. The Garret cartridges are so damned picky about oil pressure too which is what I think causes so much failure.

However the GT series has proven to be pretty reliable but the price is even more than a 20G than again there is a 25G. Someone mentioned the 20G as an old turbo but up until the recent years of the GT series garrett technology in wheels was the same since the 70's and Mitsu's wheels were proven to be more efficient.

The other thing is that you dont need a bigger wastegate on a big turbo if you are going to run high boost. You need a big wastegate on a big turbo if you are going to run low boost and if thats the case why the heck even buy the big turbo.

My .02

Flame away....

 

[poooch]

mitsu turbos are awesome they last forever.... well they have for me anways so do subaru tubos A+

 

[Geezus_Aach]

subaru wrx uses a mitsubishi tdo5h turbo, i believe...??

 

[RX73Rotorj]

Yeah im buying the standard 20g ported both sides and polished.