Lets Talk Td06's

[Roy]

Want to part with you rTD05-18G, I am after one with the 3” intake

[zebra]

Roy - what about a TD05 20g CHRA, that way you can use your existing Trust compressor cover and intake setup and find a rear housing to suit?

Ill have a look and see if the back plate is the same size, from memory they are.

[zebra]

Just had a quick look, so far I gather that the TD05H 20g and TD06 20G share the same compressor cover.

[rb30dett]

Want to part with you rTD05-18G, I am after one with the 3" intake

You have 1 without a 3" intake? No sorry mate I have two but they are my new street setup (not used yet) but yeah 3" compressor and 8cm rear. Same housing as a td06 anyway (cheap as from Kando on egay) I have used his rebuild kits on my 06-20g's they are fine. I have about 8 td05's in pieces but pretty sure they are all small compressor housings will check for ya.

[Roy]

Not sure putting a 20G compressor on a TD05 wheel is ideal?!?!? For one, being a bush bearing turbo, doesnt that mean it struggles with larger axial loads when you start throwing big compressors on small turbines...not to mention the basic aero side of things with regards to surge and trying to spin a big compressor with the exhaust gases having very little torque by hitting a smaller radius turbine....lol, i dunno

[zebra]

I dunno either lol, I just like things that go chu chu chu when you change gears hahahah.

I agree on the surge thing though, but who knows it might work lol.

[rb30dett]

Not sure putting a 20G compressor on a TD05 wheel is ideal?!?!? For one, being a bush bearing turbo, doesnt that mean it struggles with larger axial loads when you start throwing big compressors on small turbines...not to mention the basic aero side of things with regards to surge and trying to spin a big compressor with the exhaust gases having very little torque by hitting a smaller radius turbine....lol, i dunno

They perform well on wrx's & evo's apparently? never seen one myself. But I agree they would be laggy, What turbo do you have?

[Roy]

I am running a TD06H-20G at the moment. I also have a TD06L20-20G and TD06SH-25G. If the TD05-18G matches up to my manifold, dump and cooler piping which it surealy has to go close then I am tempted to bin the 20G and swap between the 25G i have whcih i know bolts on place of my 20G

Edited October 9, 2010 by Roy

[zebra]

Roy - Sell me your 25G! lol

[Roy]

I am keeping it for my RB24 on E85

[zebra]

You homo

LOL

[rb30dett]

Yeah it would fit fine I take it you have a trust kit? What motor and boost at what rpm do you get from the H?

[zebra]

http://www.skylinesaustralia.com/forums/Bo...20-t330619.html

Thats Roys build

[rb30dett]

http://www.skylinesaustralia.com/forums/Bo...20-t330619.html

Thats Roys build

Thats a great read, good info there too.

[discopotato03]

I don't know about the flatulence fours but I do know that 20G compressors on TS Evo turbos are not exactly the ducks guts . It is an easy "upgrade" to do to them because the 20G compressor is essentially a bigger trim version of the "big" or 68mm OD 16G wheel they have standard . Swap the wheels and machine the comp housing .

You could possibly liken 16/18/20G wheels to 48/52/56t 71mm compressors in Garrett GT2871R turbos , the largest or 56 compressor trim version of the 2871R is laggy for the same reasons .

Occasionally someone has an 18G compressor put in a Evo turbocharger and its probably going to have half the extra lag that the 20G wheel would .

The issue as Roy said is extra workload on the turbine and it can only hope to develop shaft power at higher engine speeds and exhaust flow rates . I'm not that knowledgeable on various Mitsy OE turbos but I tend to think that the 20G compressor is more likely to be teamed with a TD06 family turbine starting with that TD06SL-2 one .

As I mentioned previously in the States mobs like CBRD (BBK turbos) and FP made up 5/5 bladed compressors . I'd say the reasoning is that 5/5 bladed wheels don't pump as much at a given speed as the 6/6 bladed ones do nor do they place as much load on the turbine wheel/shaft so it can accelerate them up to speed more easily . The result is good turbo response and good mid range power .

Actually FP is using a range of their own billet compressors that from memory have 7 full height blades so even less than the 5/5 (10) or 6/6 (12) . I think they call them HTA which is said to stand for Hydraulic turbine assist .

Its three way juggle of less lag/least compressor surge/good power range . The Evo turbos don't have a port shrouded compressor housing so the aftermarket has been trying to find ways to eliminate compressor surge with these lower blade count wheels . FP eventually bit the bullet and had a port shrouded comp housing made up , I'm not sure how well the 18 and 20G compressors work with these housings or even if they offer them for those wheels .

I think whats happening is that these two firms are opting for custom compressor wheels that no one has access to so their units can't be copied and their pricing undercut . Captive market so to speak .

Anyway enough rambling , the same principles apply no matter who's turbos are used . The turbine and its housing are generally the hardest things to get right and once you do the rest comes together reasonably easily .

A .

[rb30dett]

I bought a couple of td05,s from a Performance import shop in Brisbane they were 16g but had been rebuilt localy and compressors changed. Was a twin GTR set up also, made big power on the dyno until both turbos broke the shafts. I grabbed them for the zorst housings and have never lookd at the compressors I will measure them now as you have perked my curiosity.

[GTScotT]

Trent, is this what you are talking about?

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...atchlink:top:en

I note you stated 330rwkw, what would response be like in comparison to a 3076?

[SABBAi]

Want to part with you rTD05-18G, I am after one with the 3” intake

Bris I've got one. 8cm rear. 3" intake.

Edited October 10, 2010 by SABBAi

[Roy]

Well my good man, we need to speak!

[rb30dett]

Bris I've got one. 8cm rear. 3" intake.

I'd be interested if Roy doesn't take it