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TD05/20G has anyone used it


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I run a TD-06 20G. with a 5h exhaust wheel. Stock fuel, and being an '86 with sequential injection limits me to 14-15 psi before it sputters or detonates. I know for sure with a DSM translator and swapping everything over to an '88, it would run much better. (Pure Insanity) runs a bigger turbo than mine on an '87; stock fuel, and more boost with no problems until he gets to around (I think) 18 PSI. The '86's don't do BIG turbos well. I've been in (Fanta's) '87 with a S16G running 18 psi and it was faster than mine. W/O fuel mods the 20G doesn't work as well as it could.
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Here's a link from Hahn Turbos about the 20g. I'm sure they are biased as they sell them.

 

20G read carefully

 

 

I have a brand new 20g TD06h - don't know what I'm going to do with it yet.

Well I have Chad's Equal Length Tube header w/T3 imprint and rebuilding an M7 head too. But I'm still TBI!

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I should say this. I've got 2 1/2 " hard pipes to and from a modded intercooler to a modded Caravan intake mani.. It flows a lot. Too much for the stock MAS to process. If I swap to a stock '88 set-up and a DSM translator and good 'ol 3" GM mas; the car would be straight up faster. Don't get me wrong, I've wasted a couple WRX's and my best kill was an old Ferrrari on the '86 set-up. The car's fast, tuned, but I need more fuel!!!
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20g is a big turbo don't be fool'd thinking the 16g or 18g is biger,, if you can't handle the extra fuel then don't run the 20g but it will perform as well as any of them if your set up for it , my auto trans truck loves it

the 20g got a bad rep back in the old days when we had no way to control the ecu or fuel , these days it's all what you make out of it

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Here's a link from Hahn Turbos about the 20g. I'm sure they are biased as they sell them.

 

20G read carefully

 

 

I have a brand new 20g TD06h - don't know what I'm going to do with it yet.

Well I have Chad's Equal Length Tube header w/T3 imprint and rebuilding an M7 head too. But I'm still TBI!

 

 

when you match that hot side to a MPI intake you'll have exactly the same setup I use, assuming you have the true 8cm^2 exhaust housing off of a syclone or typhoon, that is. I use that exhaust housing with the 06H wheel machined in and standard 20g cold side and love it. Mitsu turbos have been super reliable for me.

 

as for the 05/20g, that's a slightly mismatched turbo in my opinion. Even the 05h doesn't feel right to me, although I don't actually know how it compares to the 06. I think our stock exhaust housings are not just a waste of time but downright dangerous for big power. They are a RIDICULOUS bottle neck and can cause exhaust back pressure that does very bad things at high output.

 

The FIRST thing everyone of us should do after ensuring that our fuel system is PERFECT, is open the hot side of the turbo up by junking the stock exhaust housing. The 8cm^2 housing on the sy/ty is just different from the quest, even though they're both called 8cm^2, it's not the same part, trust me. You want the T3 flanged 8cm^2 housing that came as a 17c on those trucks and you want it matched to a 16g or 18g or at maybe 20g for a great street turbo, especially if you're going to a tube header. I'm convinced most of our blown heads and head gaskets are from restrictive exhaust housings on the factory turbos, and guys jacking the boost way higher than it should ever be on such a small bottleneck in the exhaust.

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assuming you have the true 8cm^2 exhaust housing off of a syclone or typhoon, that is

 

Unfortunately not - mines the 14cm^2. I paid 625.00 or so for it from Heron on a GP brand new. Great deal but I'll probably swap it out for the 8cm^2. Hahn has them for ~350.00 but I haven't shopped around yet.

 

I attempted to sell it here but most wanted a stock replacement. No complaints here as I'll work with this.

 

http://www.skarproductions.com/conquest/dscn2512.jpghttp://www.skarproductions.com/conquest/dscn2514.jpghttp://www.skarproductions.com/conquest/dscn2516.jpg

 

 

http://www.skarproductions.com/conquest/dscn2513.jpghttp://www.skarproductions.com/conquest/dscn2515.jpghttp://www.skarproductions.com/conquest/dscn2517.jpg

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Unfortunately not - mines the 14cm^2. I paid 625.00 or so for it from Heron on a GP brand new. Great deal but I'll probably swap it out for the 8cm^2. Hahn has them for ~350.00 but I haven't shopped around yet.

 

I attempted to sell it here but most wanted a stock replacement. No complaints here as I'll work with this.

 

http://www.skarproductions.com/conquest/dscn2512.jpghttp://www.skarproductions.com/conquest/dscn2514.jpghttp://www.skarproductions.com/conquest/dscn2516.jpg

 

 

http://www.skarproductions.com/conquest/dscn2513.jpghttp://www.skarproductions.com/conquest/dscn2515.jpghttp://www.skarproductions.com/conquest/dscn2517.jpg

 

The turbo in the pics, have a TD06 (Sy/Ty) exhaust housing. This is what Chip is talking about.

 

I'm running a 20g-TD06h turbo, and I LOVE IT!!! It's pleanty of turbo, and it's far from a bottleneck. Lag time for me, is close to none.

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The turbo in the pics, have a TD06 (Sy/Ty) exhaust housing. This is what Chip is talking about.

 

I'm running a 20g-TD06h turbo, and I LOVE IT!!! It's pleanty of turbo, and it's far from a bottleneck. Lag time for me, is close to none.

 

yeah I couldn't tell from the pics but that turbo sure didn't look like a 14cm^2 housing. Even the 10cm housing is probably going to be WAY too big for most street apps. It's sometimes hard to go by a person's report on their lag. Alot of what feels like "lag" could be fixed by proper cam phasing and then actual ignition timing.

 

For the street though, and just general drivability, this turbo topdawg and I have is the business, and it's close to what you're already holding.

 

I got my sy/ty exhaust housing for $80 I think, actually yeah, it was $75 from a guy in GA that deals exclusively with sy/ty stuff. Can't remember his name or website.

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The turbo in the pics, have a TD06 (Sy/Ty) exhaust housing. This is what Chip is talking about

 

Yes, that's correct 20GTD06 14cm^2.

 

 

I have an equal length Tubular header w/T3 flange. Car is still in CT being painted.

 

The inside of the turbo exhaust housing has a 14 stamped in there. I was advised that's how you know. I would believe the 8cm is what I would like, as I want more streetable than drag. Next years project to have everything race prepped & blueprinted/forged/honed(?).

 

Thanks,

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Hahn used to offer several flavours of "super" 20Gs - 05 or 06

hotside in 8 or 10cm, integral wastegate included.

Dunno if they still run $699 & 799 'specials'. A deal imo. Call 'em

 

Some 'veteran' DSMers still herald the 20 as their favourite all

around street turbo.

 

They've consistently delivered on numerous motors - examples;

Hahns fwd 420A eclipse went 11s.

Street G54 gone 11.2.

DSM... 11.0

A street SR20 and CA18(1.8) gone low 11s with 20G/td06-8cm(Greddy)

 

20 is a solid proven peformer..... the rest is up to you, really.

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I run a TD-06 20G. with a 5h exhaust wheel. Stock fuel, and being an '86 with sequential injection limits me to 14-15 psi before it sputters or detonates. I know for sure with a DSM translator and swapping everything over to an '88, it would run much better. (Pure Insanity) runs a bigger turbo than mine on an '87; stock fuel, and more boost with no problems until he gets to around (I think) 18 PSI. The '86's don't do BIG turbos well. I've been in (Fanta's) '87 with a S16G running 18 psi and it was faster than mine. W/O fuel mods the 20G doesn't work as well as it could.

 

-grins- I remember dragging your a** and pulling ahead by 3rd gear lol

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