Monday, November 25, 2013 - 12:54 pm, by: Tai Johnsen(Privatejohnsen)
Thanks guys!
I tried to keep everything tidy and will try to fit the OEM air filter and sort out a catch can to keep it looking stock(ish)
I got the heat shield from Autobarn, no idea if it's nasty. Pretty sure it's just high temp cloth with an aluminium coating. I have more shielding to do around the dump still.
Nice spotting Jason
I am currently looking for a reputable tuner. I would like Cihan to do it, but I don't think it will happen. My other choice would be PITS or EFI Performance.
If you click on the link on the first page it has a full system to help you pick the right turbo for your application. As you can see from the pics it "should" come on boost around 3k..
Wednesday, December 18, 2013 - 08:37 pm, by: Tai Johnsen(Privatejohnsen)
Sorry for the delay Ali, at the moment it's just running off the gate spring pressure and it seems to hit 16.5 PSI at around 4,000rpm. But it is SUPER rich and un-tuned at the moment.
As for the off-boost response, well at the moment it kinda sucks because nothing really happens in the 2-3,000 rpm range which is where most of the daily driving is.
I have the car booked in for a tune on the 8th of January and hopefully something is found. I can hear the turbo really come "on song" at just after 2,000rpm, but nothing really happens on the boost gauge until 3,500rpm
Compared to this evo which has less displacement and a larger rear housing, something isn't right.
Wednesday, December 18, 2013 - 10:54 pm, by: Ali Saeed(Ali)
Will be very interested to see the results after a tune. Using a boost controller will help boost ramp up and upping the boost might effect boost build up as well?
Sunday, December 22, 2013 - 06:31 pm, by: Tai Johnsen(Privatejohnsen)
After a little more trouble shooting today something definitely isn't right.. I have tested the actuator and it starts to open at about 22PSI ( http://www.youtube.com/watch?v=cOpRi8PrnEA ) but while driving I can only achieve around 16-17PSI at the intake and at the actuator
It looks like a HUGE boost leak, or a pre-turbine leak, it's really got me stuffed at the moment. I will pressure test the compressor housing all the way to the throttle body on Monday.
Friday, December 27, 2013 - 04:56 pm, by: Tai Johnsen(Privatejohnsen)
I plugged up the inter-cooler at the throttle body and the intake of the turbo and pumped it up to 20PSI and only found a few baby leaks which were fixed with a few turns of the hose clamps. Nothing major..
I checked the manifold for evidence of a leak of some sort.. All looks good..
Hopefully I'm missing something obvious and they spot it on the dyno.
Kinda running out of ideas as to what it could be..
Sunday, January 05, 2014 - 02:09 pm, by: Tai Johnsen(Privatejohnsen)
*small update*
I changed out the old plugs for new ones (BKR7ES-11) and gaped them down to 0.8mm.
I also heat shrank over my coils (3 layers), then a few layers of Kapton tape covered with self amalgamating tape and replaced all the broken plugs with new ones.
The dyno is on Wednesday the 8th and hopefully it all goes well.
If I don't get any better response I will probably either change the turbo over to the new smaller brother EFR 7163 with the mixed flow turbine, or 1.5J..
Thursday, January 09, 2014 - 09:57 am, by: Tai Johnsen(Privatejohnsen)
Thanks Dan,
Unfortunately they couldn't find anything wrong with it and it was a pretty disappointing day for me.
My aim was for 300 at the wheels with close to stock response and I have neither
I didn't have any ignition break down at 20PSI which means the heat shrinking worked, but my intake temps were pretty high at 65degC and there is hardly any timing in it because it would start to knock which means no power.
I am giving up for the moment, but the next on the list will be a new intercooler and I will probably try to sell the 7670 and buy a 7163.
Thursday, January 09, 2014 - 10:15 am, by: Kurt Atzmuller(Kurt)
Or just stick a 2j bottom end in there! But yes that looks very laggy. Thats a shame you've put a fair bit if effort into it. What hp is that turbo rated too again?
Thursday, January 09, 2014 - 10:23 am, by: Kurt Atzmuller(Kurt)
Yeah i noticed that too. Your peak power is only at 16 psi. That would be similar results for a gt35 with a .82 rear housing i'd say. What boost controller are you using?
Thursday, January 09, 2014 - 11:35 am, by: Robert Day(Lexsmaz)
Hi Tai,
Sorry to hear they couldn't improve things, Very disappointing for you ..
I'm sure you did it but when you put the Z bend in the actuator rod for the waste gate did you make sure the waste gate flap was fully seated afterwards & if so have you tried to maybe adjust the rod so there is some load on the waste gate flap too to keep it shut, just my 2 cents worth
Friday, January 10, 2014 - 12:20 am, by: Tai Johnsen(Privatejohnsen)
Thanks for the comments guys..
I have a turbosmart e-boost street using the EFR's built in solenoid.
I can add some more pre-load to the actuator, but I lose some stroke length, and I can't understand why the actuator opens at 22PSI when I test it by itself (see video), but only makes 16PSI when on spring pressure when driving.
I can handle the lack of power due to knock and intake temps, but what really kills me is the response. It's exactly what I DIDN'T want.
This thing has the same compressor size as a 3076 and a lighter (albeit bigger) turbine wheel in a fully divided housing..
Friday, January 10, 2014 - 01:09 pm, by: Tai Johnsen(Privatejohnsen)
Daniel Clarke wrote on Friday, January 10, 2014 - 09:42 am:
a 3076r would probably have better figures with boost almost 1000rpm earlier .
My point exactly.. But they should be similar!
I have been in contact with full-race and I have wired the gate shut to see if that changes anything down low.
Other than like you and Robert say, it could be a faulty turbo and the wastegate flap might not be seating flush for some reason.
I would like to try one of the externally gated rear housings to see if that does anything also.
And again, the 5858 is almost exactly the same compressor size as the 3076 and 7670. This turbo 'should' have 'insane response and power', that's why I chose it.
I know it has a large rear housing and turbine wheel when compared to the others, but it was designed like that to take advantage of the light turbine and respond like a smaller housing, but with more up top.
The 7163 has a smaller compressor 71mm vs 76mm O/D (7670 the 3076 and 5858) and can still flow out to 60lb, and the turbine is 63mm vs the 70mm in mine, the 60mm 3076 and 65mm of the 5858.
Add the new mixed flow turbine and the light weight wheel and the smaller 0.80 A/R, it should be bulls#%t good..
Sunday, January 12, 2014 - 04:16 pm, by: Ali Saeed(Ali)
After reviewing various forum threads on supraforums, it seems that 7670 SHOULD hit full boost at 3500rpm on a 2jz...I reckon that translates to 3800+rpm on the 1jz.
The research also suggest thats the EFR turbos dont tend to make a lot of power on JZ platform compared to equivalent Precision or Garrett..
Sunday, January 12, 2014 - 07:46 pm, by: Tai Johnsen(Privatejohnsen)
Could you please show me some of the threads Ali? I can't seem to find them..
What is full boost though? 12lb 27lb?
Ideally I would want the response that the perrin test shows for the 7163. 5lb @ 2k, 15lb @ 3k and 20lb soon after.
The question remains is there something wrong with my setup or not, and if I can get it to perform as is "should" or if I can get what I want with the 7670 and 1.5J or with the 7163 and 1J..
I think the baby intercooler the culprit behind the lack of power.
I checked the air temps with the PFC on the way home on Friday night and the minimum scale is 29degC and cruising home it steadily rose up to 60 degrees and did not change under boost, so I am thinking it's being heat-soaked and not the actual air temp..