Friday, May 13, 2011 - 05:59 pm, by: Tai Johnsen(Privatejohnsen)
OK, so I am in a dilemma..
I was originally thinking of high flowing and steel wheeling the stock twins, dumps pipe and chasing 250rwkw with all the other supporting mods..
To high flow and steel wheel I am looking at $3.5k from GCG, plus dumps $600ish so around the $4k mark..
But now I am thinking for similar money I could go single with similar response and more headroom with a single like the GT3076R.. or something similarly responsive and good for 250rwkw plus..
Prices? i'm not sure..
So my pro's and cons so far are..
Labor : I don't mind doing all the work myself, so that's negated..
PoPo : The twins look stock... The single, not so much.. But they look so much better and are much neater..
Future power : Single can grow with my stupidity and budget, twins will be limited..
Quality : I have no interest in dodgey parts, but i think the single would be more reliable at this power level with the right parts??
Any feedback would be great, i'm looking for peoples experience good and bad...
Friday, May 13, 2011 - 06:20 pm, by: James Harris(Haro)
Hi Tai,
How you been buddy?
Mate if I was to do it all again I probably would have just gone with some high flowed twins or similar.
As much as I appreciated the single turbo there were PLENTY of hidden costs involved that added up for me. Oil Drains Oil Feeds Coolant drains Coolant feeds Manifold Bracing Manifold tidying up (if you buy an ebay one) Silicone Joiners New big pipe from single New big filter for single Dump pipe Heat wrap Turbo beanie Modification for your FMIC External Wastegate *dont buy a cheap one! Screamer / Dump work etc etc etc
add to that the ECU if you have not already done it, tuning it gets painful after a while.
Again - I loved the T66 on my old Soarer once it was done but it really burnt through my pocket to do it correctly.
That said - I have seen some good looking kits pop up here and there which is pretty nice, so you could get lucky and snap up a bargain.
OH - and I already had Lew's Twin Dumps prior to going single so they would have worked very well with some hi flowed twins.
Hindsight is a beautiful thing hey??
Tai Johnsen DieHard QLD JZZ30 Pov Manual LSD & black!
Friday, May 13, 2011 - 06:35 pm, by: Tai Johnsen(Privatejohnsen)
Hey man!
I'm good mate, I had a tough year in 2010 with an apprenticeship with Etihad over in Abu Dhabi not being as great as sounded, and had to come back and sort out everything and get the job I should have taken instead at Qantas.
(I know all about hind sight )
You still in the reserves?
I have heard you say that in previous posts, but surely with a trust kit will come with everything you need?? or like you said a good second hand kit?
As long as it's quality...
I just want to make the most of my money without being dodgey..
There were a nice set of HKS T3G's, the TD06-25G and the GT35R kit all for around the $3k mark..
All the other mods I am going to do either way, like the ECU etc.. So I just want to compare the turbos..
Saturday, May 14, 2011 - 04:18 pm, by: Brett Harrison(Bretto)
Tai, recently faced this myself.
I ended up going the single route, which worked out far cheaper than rebuilt twins. However I did do all work and fabrication, except manifold.
I used all quality parts, including Garrett and Tial,
Look in the US for all your parts, they are so much cheaper than AUS. We are getting ripped off for all automotive gear, especially with our dollar being worth more than the US dollar. If local suppliers don't pass on the benefit, I have no guilt in shopping OS.
Oh, car flies now, is quieter, smoother and uses less fuel than the twins, response is on par, top end much better, would never go back to the twins after a good single setup.
Brett.
Tai Johnsen DieHard QLD JZZ30 Pov Manual LSD & black!
Tuesday, May 31, 2011 - 10:19 pm, by: James Harris(Haro)
Hi Tai,
Sh1t sorry for late reply mate, been a busy chap and forgot about this thread.
Ahh no good to hear that the Abu Dhabi thing didnt work out the way you were hoping. I think those sorts of things are probably better to do here and then if need be head out and enjoy the world with that trade under your belt.
Yeh mate I am still in the reserves but its not as fun as it used to be as the fkn government has cut plenty of funding (typical labour) so apparently my regiment can't afford to pay me.... BUT they can afford to spend 25 MIL on a few new ASLAVs and bits and bobs haha. I'm pretty much just chasing days where I can.
The hotel stuff is keeping me nice and busy also.
BACK ON TOPIC
Look I do agree with picking up a complete kit as it means someone else has had to go through all the sh1t of getting it to fit. If you are not in a hurry to get it done I am confident that you will be able to be 'THAT GUY' who picks up a bargain kit.
Thursday, June 02, 2011 - 08:11 pm, by: Steven Anderson(Cusscuss)
I have a bill here for a supra single conversion, so pretty similar. Doing all the pipework from scratch including manifold and dump but not including turbo or wastegate came out to just under 4k.
But the result afterwards, oh yeah. Worth it for sure.
Friday, June 03, 2011 - 08:58 am, by: James Wilson(Ser493)
Another option for you might be what I have just done to one of my soarer's.
I have a couple of single turbo soarer's with external gates and all the supporting mods, but the new one is a little different.
I have gone for a cheap ebay manifold and then braced it and cut off the external gate pipes and closed them up. I then grabbed a KKR internally gated turbo, then just fabricate a dump and your sorted. I did all this because I wanted a "legal" single turbo setup for a daily driver. So far so good
All up I think this conversion has cost me:
$299 manifold $600ish Turbo $70ish for new coolant lines $150ish oil feed & drain setup $100 for custom dump $20 for high tensile bolts ect.
The only other costs if you wanted to do this conversion from stock would be fabricate a new turbo hot pipe and inlet for the new turbo, I would guess $150 tops??
You could run 12psi through this set up and have it running on the factory ECU too
Monday, July 25, 2011 - 04:36 pm, by: Kurt Calver(Kurt_nz1)
i have almost same setup although i have built auto and hks 254/254 sard 540cc ran out at 20psi depends how much you want to deal with lag no more medium accelaration to 50 only flogging it or nana speed and on off trottle responsce is noticable on high way depends wht you want to do with it and i noticed big in lag when putting heavy waste gate spring in or if u have eletronic boost control make sure gain is turned up high
Friday, July 29, 2011 - 10:23 am, by: Sebastian Grant(Saabg)
If I had my time again tai that's what I would have done. That setup has been proven to be able to make 320rwkw with better response than the standard turbos and the best sounding turbo on the planet in my opinion.
Saturday, July 30, 2011 - 07:24 am, by: Walter Gillmore(Cl33pa)
dude! i can get that done for you much cheaper! try $800 a turbo for highflow and steel wheels you could even purchase the steel wheels yourself and rebuild kit, put it all together and then have it balanced for a damn good price email me for more details bro.
Ben Lipman Goo Roo SA Soarer TT manual, plus TT track car
Sunday, July 31, 2011 - 02:53 pm, by: Walter Gillmore(Cl33pa)
i have been chatting to glenn munro these last few weeks. mostly about material properties and such for manufacturing a core. and tolerance levels for the ceramic ball bearings. knows his stuff extremely well. and isn't afraid to share the knowledge his prices are very reasonable. $400 for rebuild with steel wheels was what i was quoted. you can purchase steel turbines/ shafts off a seller from the uk. that are already balanced for $180 each so total for rebuilt turbos comes to $580 each, balanced. he is currently looking into sourcing ball bearings that fit in the core of the ct12a's as he's had a few inquiries. pretty difficult as there is hardly any meat to machine out to fit a normal rc jet turbine bearing.
Ben Lipman Goo Roo SA Soarer TT manual, plus TT track car
Sunday, July 31, 2011 - 08:39 pm, by: Ben Lipman(Ben12a)
One of those enquiries was me. I haven't gone ball bearing though. We discussed it, but he is unsure of what sort of benefit there would be on such small turbos.
I was hoping he would do mine as a test case for free, but never got around to asking.
The price above was for the pair highflowed and steel wheeled etc. I had to confirm with him twice as it seemed too good a price to be real. I have a set on the way, and my a mate is/has ordered a set for his 2J.
Tuesday, August 02, 2011 - 07:40 am, by: Jeff Bedsor(Jeff_bedsor)
Tai Johnsen wrote on Monday, August 01, 2011 - 03:49 pm:
but I don't think the stock turbos will support 300rwkw no matter what you do to them
I'm not exactly sure what mine is making but it must be bloody close to 300rwkw. I had it dynoed running about 23psi and made 263 rwkw, this did 11.8 down the quarter. Since then I have done 11.61 with about 30psi boost. It's not just the turbo's that allows you to make power, it's the whole package combined. I think I can still get a bit more out of them, hopefully down to about 11.3.
Tuesday, August 02, 2011 - 11:10 am, by: Sebastian Grant(Saabg)
Tai, 320rwkw have been made with his t3gs which are basically steel wheeled, high flowed standard twins which leads me believe that 300rwkw is achievable with the standard twins.
Tuesday, August 02, 2011 - 01:20 pm, by: Tai Johnsen(Privatejohnsen)
30 psi is madness.. those poor turbos must be way outside of their efficiency range...
Surely the 3076 will make the 300 mark with much lower pressures, and still have much more headroom without flogging it to death. The compressor map actually shows it's still on the efficiency island at 30 pound....
Tuesday, August 02, 2011 - 03:39 pm, by: Tai Johnsen(Privatejohnsen)
Jeff Bedsor wrote on Tuesday, August 02, 2011 - 02:34 pm:
That's what everyone says, but you can't argue with quarter mile times
I'm not saying they can't make that power and i'm not arguing your 1/4 mile time
Just saying they must be pushing a lot of hot air and you could probably make they same power with less boost with a compressor designed to push that amount of air..
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