Green and 20g

[TurboSpoolinIns]

ok, this might be a stupid question but it was brought up the other day and i'm confused as hell...For the Green and the 20G turbo's..they are "BOLT ON" so does that mean that you will NOT have to get the t3t4 manifold? because i thought that it was like a MUTT where they do just bolt on. Also a Ext. WG can be put on 2g manifold right?

 

[BatmanGSX]

Yes, they both bolt on. They both use standard Mitsubishi turbine housings. 20Gs use a 7cm housing and Greens can be had with either a 7cm or 8cm housing. Both will fit a 2G manifold.

An external can be put on a 2G manifold. I prefer them to be off the O2 sensor housing.

 

[GRNDSM]

Both Green and 20G are "bolt on turbos" as they use 7cm^2 exhaust housing (found originally in 16G).

You only need a T3/T4 manifold if you go with a full Garret turbo.

>because i thought that it was like a MUTT where they do just bolt on.

That strikes me funny because, if anything, it should read: "a Mutt is like a 20G", sinse 20G has found its way into DSMs around 1994 and Mutt turbos did not come around until last couple of years .

>Also a Ext. WG can be put on 2g manifold right?

Right. Just make sure that it is done by a good welder, because it is tricky to weld cast iron. This is not something for your local exhaust shop...

 

[rdrkt]

Originally posted by TurboSpoolinIns
Also a Ext. WG can be put on 2g manifold right?

I would recommend getting an 02 housing with a dump. I think its cleaner that way.

 

[TurboSpoolinIns]

Originally posted by rdrkt


I would recommend getting an 02 housing with a dump. I think its cleaner that way.

thats another thing i DO NOT get, an O2 housing with a dump...so would there be an Ext. WG too then? or just that dump, OR would the WG be on the O2(sorry if this sounds dumb, cause i am dumb)

 

[gst_spyder]

You either put the external WG on the exhaust manifold, run a dump tube down from there, and weld the flapper (internal WG) shut OR you put the external WG on the O2 housing, run a dump tube down from there, remove the flapper, and port the internal WG hole to the max. Putting it on the O2 housing looks better (cleaner) like rdrkt said cause the dump tube coming off the manifold looks like a hack job IMO

Mario

 

[GRNDSM]

>run a dump tube down from there, remove the flapper, and port the
>internal WG hole to the max

I just want to add that if you do not want to commit your turbo housing to being permanent “after the turbo WG housing”, you can simply wire your flapper valve to stay wide open. This way you can easily reverse it later.

The hole does not need to be anywhere near as big as the size of the WG valve (ie 40mm Tial does not need 40mm hole). I have been using HK$ 40mm WG with a hole ported for a stock WG (around 28mm).

28mm housing has area of 616mm^2. 40mm valve have to lift 15.3mm (.6”) to match the same area. So going much larger than 30mm hole in the turbo housing is not going to give you much.

 

[TurboSpoolinIns]

now i'm just totally confused about ext. wg's now. in normal terms now?

 

[GRNDSM]

If you install an extnal WG in the O2 housing, you need to have a hole in your turbo housing. It does not need to be as large as most people think.

You did not ask about this option, someone else brought it up. So I can see why it might not much sense.

 

[gst_spyder]

GRNDSM wrote:

I just want to add that if you do not want to commit your turbo housing to being permanent “after the turbo WG housing”, you can simply wire your flapper valve to stay wide open. This way you can easily reverse it later. The hole does not need to be anywhere near as big as the size of the WG valve (ie 40mm Tial does not need 40mm hole). I have been using HK$ 40mm WG with a hole ported for a stock WG (around 28mm). 28mm housing has area of 616mm^2. 40mm valve have to lift 15.3mm (.6”) to match the same area. So going much larger than 30mm hole in the turbo housing is not going to give you much.

OK I see what your saying, great info and not just a blanket statement!

Mario

 

[GRNDSM]

Thanks,

But what you do you mean by "not just a blanket statement"?

I NEVER MAKE BLANKET STATEMENTS!

 

[gst_spyder]

Thanks, But what you do you mean by "not just a blanket statement"? I NEVER MAKE BLANKET STATEMENTS!

I wasn't referring to YOU about making blanket statements but not many people take the time or can even EXPLAIN their posts due to lack of knowledge. Like instead of just saying "The hole does not need to be anywhere near as big as the size of the WG valve" you are smart enough to explain why which is helpful.

Mario

 

[MaineDSM]

Of course, Leon cannot keep his turbo spooled between shifts, so take what he says with a grain of salt!

Hi Leon!
-Brent

 

[GRNDSM]

>Of course, Leon cannot keep his turbo spooled between shifts, so take
>what he says with a grain of salt!

Brent,

You are talking about my huge T3/T4 turbo with in external WG in the header. We were talking about about my old 20G set-up with WG after the turbo in the O2 housing. How do you connect the two?

 

[MaineDSM]

Originally posted by GRNDSM
>Of course, Leon cannot keep his turbo spooled between shifts, so take
>what he says with a grain of salt!

Brent,

You are talking about my huge T3/T4 turbo with in external WG in the header. We were talking about about my old 20G set-up with WG after the turbo in the O2 housing. How do you connect the two?

I was *kidding* Jeez...