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  Soarer Central * Mechanical - TT * Turbo Talk * Starting my compound turbo setup! * Archive through October 29, 2014 Previous Previous    Next Next  

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Boris Siljanoski
Goo Roo
Western Australia
LS400 + Soarer.

Posts: 2184
Reg: 11-2007

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Saturday, April 12, 2014 - 11:14 pm, by:  Boris Siljanoski (Z2tt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Was there any reason you chose to make a compound setup compare to sequential setup?
Blake Gloyn
Goo Roo
manawatu
soarer JZZ30 TT

Posts: 1136
Reg: 02-2006

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Sunday, April 13, 2014 - 03:09 am, by:  Blake Gloyn (Blakenz) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

He polled a small group of friends/enthusiasts and was encouraged to do the compound.(innocent whistling from me) :-)
Compound is proven, it is easier to tune, cos there is no "swap over point", no complex valving on both the exhaust and the intercooler piping(the oneway valve required). Trying to get a sequential operation to work how you wish takes quite a bit of experimenting and time.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 695
Reg: 05-2011

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Sunday, April 13, 2014 - 04:50 am, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Like Blake said pipework is straight forward compared to sequential twins.

This is the way its done.
You need to get the small turbo going as quick as possible to get to get plenty of energy for the gt 45 to fire earlier, that's the key.

I don't think boosting through the small turbo will be as bad as what people think. Velocity will be high as its already boosting and spinning at over 100,000rpm.

Otherwise setup with 2 intakes you'll have great initial response from the small turbo then a massive flat spot through middle revs and then the 45 would eventually fire at maybe 6000rpm. Thats not really the power curve i'm after.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 696
Reg: 05-2011

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Tuesday, April 15, 2014 - 04:28 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

In the bay. Just need to move the big one big a tad for a bit more room.

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Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!

Posts: 1484
Reg: 04-2006

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Tuesday, April 15, 2014 - 07:27 pm, by:  Tai Johnsen (Privatejohnsen) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

So cool!
Walter Gillmore
Goo Roo
QLD
TT JZZ30

Posts: 1766
Reg: 07-2009

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Tuesday, April 15, 2014 - 08:12 pm, by:  Walter Gillmore (Cl33pa) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Mmm thats sweet.
Allan Langford
Goo Roo
Vic
UZZ31

Posts: 1172
Reg: 05-2010

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Tuesday, April 15, 2014 - 09:09 pm, by:  Allan Langford (Allan) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

how about mounting the wastegate back between 4 & 5 to free up flow from 1,2 & 3?


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Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 697
Reg: 05-2011

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Tuesday, April 15, 2014 - 09:25 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

That front wastegate is for the small turbo and will be plumbed back into feed the big turbo.
there is another wastegate to control boost on the big turbo where you have pictured Allan.
Walter Gillmore
Goo Roo
QLD
TT JZZ30

Posts: 1767
Reg: 07-2009

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Tuesday, April 15, 2014 - 09:26 pm, by:  Walter Gillmore (Cl33pa) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Wut? Free up flow? Putting it there would clear space for moving the turbo forward. But it would also hit the engine mount. And the second wastegate would probably reside near that position. Outlet from first wastegate would merge into first dump there.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 698
Reg: 05-2011

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Tuesday, April 15, 2014 - 09:27 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Ahh i see what you mean now.
I think that 45mm one will do the trick. I'll see how it goes.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 705
Reg: 05-2011

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Friday, May 02, 2014 - 07:52 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Haven't had much time to do much on this the last week or so but have modified this to this stage.
still have to plumb the front gate back in and a gate for the big turbo.

Really need to get this small turbo in and try it out before i run out of time as tax time looms and is a busy time for me.


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Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 728
Reg: 05-2011

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Wednesday, October 15, 2014 - 07:48 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Got back onto this again after some dumps intakes and side projects...
Here's some more pics!


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Might even plumb in an airbox for this as i don't mind the look of it.


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At the momment i'm plumbing the small turbo gate back in to feed the big turbo.
And the 4 inch exhaust with giant flex joint will look cool!



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You can see in this pic where the gate plumbs back in for the big turbo. Its a fairly tight squeeze past the water pump so a bit of heat wrap and it'll be fine.



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Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 729
Reg: 05-2011

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Thursday, October 23, 2014 - 12:36 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

More pics...



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James Buchan
Goo Roo
Vic
vvt-i turbo

Posts: 1847
Reg: 10-2008

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Thursday, October 23, 2014 - 03:24 pm, by:  James Buchan (Jrbuch) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The pipework took me a moment to get my head around. Keen to see more of it though.
Blake Gloyn
Goo Roo
manawatu
soarer JZZ30 TT

Posts: 1214
Reg: 02-2006

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Thursday, October 23, 2014 - 07:17 pm, by:  Blake Gloyn (Blakenz) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

looking real good,mate.
there are a heap of clearance issues that you have to think through and overcome when you embark on something like this.Well done.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 730
Reg: 05-2011

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Friday, October 24, 2014 - 01:11 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yes there sure is Blake! Its a tight squeeze past the shock tower but it will be fine.
Coming along real well though, will get the rear gate on this week and the big turbo oil return. Then on to the dump.
Blake Gloyn
Goo Roo
manawatu
soarer JZZ30 TT

Posts: 1215
Reg: 02-2006

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Friday, October 24, 2014 - 08:25 pm, by:  Blake Gloyn (Blakenz) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

i'll let you know what address i want it all sent to !!!! :-)
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 731
Reg: 05-2011

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Saturday, October 25, 2014 - 05:52 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yes no problems blake! You can have the second set i make.. Once i've sorted it all out.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 732
Reg: 05-2011

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Tuesday, October 28, 2014 - 11:55 am, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Here's some pics of the large turbos wastegate positioning.



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Tai Johnsen
Goo Roo
QLD
JZZ30 Pov Manual LSD & black!

Posts: 1543
Reg: 04-2006

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Wednesday, October 29, 2014 - 10:27 am, by:  Tai Johnsen (Privatejohnsen) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Getting close!

Ben Lipman
Goo Roo
SA
Soarer TT manual, plus TT track car, plus a spare shell

Posts: 3834
Reg: 04-2006

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Wednesday, October 29, 2014 - 02:44 pm, by:  Ben Lipman (Ben12a) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

You almost need to have a grand opening event when this first fires up.
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 733
Reg: 05-2011

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Wednesday, October 29, 2014 - 03:48 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Need to build my 1.5j first to give it a real run. I will try it out first on my yellow car but it'll be a limited drive in that car.

I took it down to my tuner today and he was very impressed, his only concern was the small compressor housing being a bit too small and suggested getting it extrude honed to help it out a bit. Cost's roughly $200 for that so i will get that done before its up and running. He was a bit excited about tuning it all up and hasn't done one on a petrol engine so it'll be a learning experience for all!
Robert Day
DieHard
victoria
v8 & TT

Posts: 827
Reg: 01-2007

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Wednesday, October 29, 2014 - 06:43 pm, by:  Robert Day (Lexsmaz) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Certainly will be an interesting thing to see it all work but I think even extrude honed if you look at the size of the outlet from the compressor side of the Big turbo to the size of the small turbo compressor outlet there are going to be some massive airflow differences / restrictions & heat once the big turbo kicks in hard ..

I think I mentioned a while ago if you put a by pass valve to the intercooler pipes at around where you have the open join from the big turbo to small turbo it might help ?? ..

My 2 cents worth, either way you have done a Very Nice job & keen to see how it all goes ..
Kurt Atzmuller
DieHard
Victoria
TT`s

Posts: 734
Reg: 05-2011

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Wednesday, October 29, 2014 - 08:28 pm, by:  Kurt Atzmuller (Kurt) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I initially thought about the bypass too Robert but the more i look into it the more i think it goes against the compound purpose. Its a fairly tricky thing to get your head around how it will work but i feel now a bypass will give me a lower psi as a result.

Talking to my tuner guy at Dynomotive in vic about what pound springs to use and he thinks we will just try it out with the springs i have in there now which is 11psi on the small turbo and 14psi on the large one. He felt boost would be fairly high with those in there and we can change springs when we know where its at.

Its a 1 minute job to get either of the gates out so changing them wont be an issue.

I think now the small turbo will need a higher psi in order to flow the 45's boost through the comp better and with a hone and an extreme port out of that small turbo outlet should help things along.

Its all going to be fun though and really itching now to get my car going again now.
Robert Day
DieHard
victoria
v8 & TT

Posts: 829
Reg: 01-2007

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Wednesday, October 29, 2014 - 09:38 pm, by:  Robert Day (Lexsmaz) Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Trial & error definitely will tell but I was thinking if the by pass was set at about 7 PSI from the big turbo it shouldn't be too bad ??? as all / most of the initial spooling up help from the small turbo would well & truly done by then ?? ...

Either way you are certainly thinking out side the box & willing to share it with us ..

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