20g trade

[gsxeclipse97]

So my friend wants to trade me my 14b for his Hahn super tdo6 20g because his car is stock and he can't use it. Now from what I have read everyone who has used this turbo hated it. So with that in mind. I was thinking of swapping the hot side for a 7cm to try to counteract the lag that the 10cm t3 housing gives. Based upon the parts on my car I think it would be ok to trade because I would keep most of the spool up that I already have now, with more top end.

What do you think? Trade or keep the 14b.

 

[Boost Demon]

What exhaust wheel is in your 20g again?

I read over the HRC 20g description again and now it makes sense, never mind. Let us know how it works out, good luck.

 

[gsxeclipse97]

What exhaust wheel is in your 20g again?

I read over the HRC 20g description again and now it makes sense, never mind. Let us know how it works out, good luck.

I'm not sure I haven't gotten the turbo yet. I do think that I will switch to the 8cm I was reading the hrc and if 15psi makes 350hp then I will be quite happy with the switch.

 

[delta448]

What exhaust wheel is in your 20g again?

I'm not sure I haven't gotten the turbo yet.

Hold up. You don't know? But you said:

tdo6 20g

So, I actaully just looked at Hahn's site and it appears that your new turbo will have a TD05H exhaust wheel, and not a TD06H like you said originally. That changes things a little.

 

[gsxeclipse97]

Yea I know it has a tdo6 compressor housing on the turbo that I know for sure. But I'm not sure how big the turbine on the exhaust side is. I assume it's standard tdo6. But I could be wrong. I should have the turbo by this weekend to know for sure. My friend mike told me that there are so many variations of the super 20g that you really have to take it apart before you really know what you have. I have been reading all about 20g turbos but there so many that I have seen.

Td05 compressor looks like 14b
Td06 standard 20g compressor
Tdo6h standard 20g compressor but different inducer.

So I'm not exactly sure what each variant has specfically

 

[delta448]

Td05 compressor looks like 14b
Td06 standard 20g compressor
Tdo6h standard 20g compressor but different inducer.

So I'm not exactly sure what each variant has specfically

All 20G turbos have the same 20G compressor wheel. The compressor housing makes such a minor difference in performance that it usually isn't even mentioned.

"Bastard" 20G: a TD05H 16G with the compressor housing machined for and then filled with a 20G wheel. Everybody thinks it's a 16G and you're superman ...until the intake tube comes off. + Sleeper points.

TD05H 20G: any turbo with a 20G compressor wheel mated to a TD05H exhaust wheel. A Bastard is just a variant with a J-pipe compressor housing.

TD06 20G: A 17C from a Syclone/Typhoon machined for a 20G compressor, usually has a bolt-on DSM flanged turbine housing custom machined, but sometimes uses the factory Sy/Ty hot side. The 17C's part number is 49179-04000 and may still be the one on the compressor housing if the housing is original.

TD06H 20G: any turbo with a 20G compressor wheel mated to a TD06H exhaust wheel. Highest power potential due to largest exhaust wheel. Has been offered by more than one vendor at different times.

 

[gsxeclipse97]

So in theory you could put any compressor housing on any of the tdo5 turbos? And if the exhaust is off the tdo5 20g then I would fit the 7cm housing? I don't really want to use the adapter but I may just try it to see what the spool up is like. If it's not too bad I'll keep it for a little bit until I change the housing over.

 

[ZenkaiRacerDsM]

The TD05 designator is really just the turbine (exhaust) wheel size. As was said there's a number of compressor wheels that could be used. Depending on the size of the compressor wheel you very well could use any of the compressor covers. As long as it's machined for the corresponding compressor wheel you are using and there is enough metal in the cover to machine off.

You just need to get whatever housing is made for your wheel. Whenever you figure out what that wheel is. If it is tdo5h which is what the 7cm housing is made for, then yeah pretty much any 7cm housing is going to fit as long as it hasn't been previously machined for something bigger. If it's a tdo6h, tdo6h4, or tdo6sl2, etc. You will need to get the 7cm housing machined since they don't come made for those wheels.

 

[delta448]

I think what's confusing him is the casting designation seen on some compressor covers. The 16G's and 14B's have TD05H cast onto the compressor housing, even though that really is only describing the turbine wheel.

 

[gsxeclipse97]

I think what's confusing him is the casting designation seen on some compressor covers. The 16G's and 14B's have TD05H cast onto the compressor housing, even though that really is only describing the turbine wheel.

Oh I get now. So the tdo5 on the compressor cover housing has absolutely nothing to do with the cover itself. So with that means the is that the Hahn turbo is essentially a tdo5 20g exhaust wheel with a t3 exhaust housing and a tdo6 cover with the 20g compressor inside. So it's confused more or less on what it's trying to be.

So the exhaust housing that would be best suited for me would be the 8cm tdo5 housing from fp. Assuming that's what's on the hot side turbo.

 

[gsxeclipse97]

Ok so we started the swap today and it had the same exducer that the 14b has. They look identical. We were actually unable to get the t3 housing off the other car so we decided to put the 20g together with 14b hot side. All was going well is say it was a right fit but it's on now. We didn't finish the install because it took much longer than expected. We should finish early tomorrow morning.