1jz single turbo dyno graphs needed!!

DR1FTER

DR1FTER

Active Member
after some pics of the dyno graphs of those who have gone single tubby on there 1jz, hopefully bon and james can post there's up to as it would be awsum seeing some megga powered jz dyno graphs:smokin:

if aswell who ever posts one up can u put down the spec of turbo, with or without cams and what ecu you are running please :D
 
some interesting info:
xJZ-Series Engine Variants - Toymods Car Club
Garrett GT 30/76 - SupraForums.com.AU

as we were discussing, either gt3076r .82 a/r tried and tested route, super responsive.
gt3582 would like to hear what bon has to say about this when he used it. lastly GT35r .82 a/r just would require more supporting mods i.e. cams to make the full use of it, big bhp

ben you already know this but thought it'd be nice to keep all relevant info in this thread.
 
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I hope to be hitting the dyno soon, only have to get a set of 500-ish cc injectores and get the SAFCII mapped, then I'm off for big boost and 400+ rwhp.
Still on twinturbo's though.
 
power.jpg
 
I have 3 exhaust housings for my 1JZ 3076r'd beastie

0.62 is super super responsive, useable boost from 2k rpm, no lag almost instant boost to 1.4 bar above 3k rpm

0.82 is repsonsove but slightly laggy makes boost from about 2500rpm onwards delay in reaching boost, would be ideal if your used to a CA :D

1.06 housing would be great for a cruiser road car, lots of lag hardly makes full boost in the low gears pretty useless to be honest. Would be fine in an auto road car thats about it.

Mine is mapped to 1.8 bar & it happily runs that, though turbo is past its efficeincy around there with peak being at 1.6bar on these (about 560bhp of flow there). I tend to keep it to 1.5 - 1.6 most of the time. 1 bar is planty in the wet & for demo's etc.

Will post up a dyno graph soonish, but its not been on the dyno for over a year, though greg at Weston has 420bhp at 1.2 bar on the same turbo. So I've no idea what mine is making :D


Its fast though!!!
 
cptsideways said:
I have 3 exhaust housings for my 1JZ 3076r'd beastie

0.62 is super super responsive, useable boost from 2k rpm, no lag almost instant boost to 1.4 bar above 3k rpm

0.82 is repsonsove but slightly laggy makes boost from about 2500rpm onwards delay in reaching boost, would be ideal if your used to a CA :D

1.06 housing would be great for a cruiser road car, lots of lag hardly makes full boost in the low gears pretty useless to be honest. Would be fine in an auto road car thats about it.

Mine is mapped to 1.8 bar & it happily runs that, though turbo is past its efficeincy around there with peak being at 1.6bar on these (about 560bhp of flow there). I tend to keep it to 1.5 - 1.6 most of the time. 1 bar is planty in the wet & for demo's etc.

Will post up a dyno graph soonish, but its not been on the dyno for over a year, though greg at Weston has 420bhp at 1.2 bar on the same turbo. So I've no idea what mine is making :D


Its fast though!!!
Click to expand...

so which one out of those 3 are you using. bit undecided between .62 and .82 swaying towards .82

any pros or cons about these 2 housings? does your turbo have a 3 or 4 inch inlet?

lastly what injectors and management are you running?

saw your motor at jdm allstars, and it was fricking mental. :worthy:
:thumbs:
 
GT3082 - don't bother, it's a stupid hybrid that strangles the engine in the 0.63 housing and isn't amazingly responsive. More than GT35R but not enough to be worth it. You can get the same power from a GT3076/GT30R with better response.

I keep saying to you all if you want to make big power and have driveability, 3076R with the 0.82 housing, if you want it to be responsive for little tracks like Lydd, Santa Pod, etc then with the 0.63 housing is probably better. That's what Greg @ Weston has ended up with.

But if you want big bang power and fuck the lag then you want GT35R with the 0.63 housing, DO NOT get a GT35R with a .82 housing, it would be totally shit for drifting. My car is already borderline, I used to think my M3 was responsive and a stock S14 laggy and shit by comparison, and now I get out of my Chaser and into an S14 and I can't beleive how easy it is to drift from low revs. lol

All of the above will come alive with cams & a posh inlet manifold, mine has HKS 256 and it feels sooooo good compared to no cams.
 
awsum il be getting myself a gt30r .82 ex, what sort of power would it be running with stupid cams and a posh inlet??
 
WideBoyS14 said:
so which one out of those 3 are you using. bit undecided between .62 and .82 swaying towards .82

any pros or cons about these 2 housings? does your turbo have a 3 or 4 inch inlet?

lastly what injectors and management are you running?

saw your motor at jdm allstars, and it was fricking mental. :worthy:
:thumbs:
Click to expand...

I've stuck with the .62 will maybe use the .82 on big tracks but tbh it does'nt need it. 4" inlet side & 3" exhaust side

550cc injectors, 2 in line pumps running stock pressure, Sard fpr, & emanage blue with a full harness (so have ignition control), with vems wideband & twin EGT gauges pre & post turbo.

There is a noticeable difference between the .62 & .82 enough to warrant lots more clutching which is something I rarely have to do as its that responsive. A few peeps will have been in my car & have seen the boost gauge which is like an on off switch there is no lag whatsoever above 3k it just flicks to boost instantly
 
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Do you reckon the potential of the .6 housing is much less than the .8 Dec??

I've got massive turbo syndrome and told everybody to get the .8, works well on the R32, much more responsive than my car, but then Greg says the .6 is awesome, but he's not running big boostssss.
 
Owens Developent GT3076 with 0.82 housing is the puppy
(with owens anti surge housing an magic )
0.63 will cause surging as its too small
0.82 Is mint, super responsive---so quick
Mine made 478bhp and it was on 1.2 bar with no cams, loads left in it

Greg is running the smaller housing cause he's gay, ha
 
Think your inlet manifold makes a biiiig difference Niall, I want one, 560bhp on stock inlet plenum = LOTSbhp on a posh one.
 
Yeah inlet manifold helps abit:D and its got an 80mm Throttle body aswell

Inlet Manifold+Trick Ported Head+ HKS Cams + Massive Booosst=Time machine

The car is sick as it is
 
Bon Bon said:
Do you reckon the potential of the .6 housing is much less than the .8 Dec??

I've got massive turbo syndrome and told everybody to get the .8, works well on the R32, much more responsive than my car, but then Greg says the .6 is awesome, but he's not running big boostssss.
Click to expand...


Well I've tried both and the difference was surprising. With the .6 housing I don't need full throttle to acheive peak boost, it'll merrily make good boost with 1/2 throttle & instantaniously too. With the .8 it was noticeable how much more throttle I needed & how much slower it was to reach boost.

Mine will surge but only under prolonged high load rpm's like you'd see on a dyno or in 5th gear at 140mph plus keeping it nailed, otherwise it never appears to surge in normal drift use.

Mine will run 1.6 bar all day long & has been doing so for ages, obviously wastegate design will effect the restriction or not at the exhaust end & mine has a 2" outlet so fairly free flowing. It won't run higher than 1.8bar no matter what I try but I've mapped it to that level for safety.

Mine appears to go just as well more or less at 1.4 as it does at 1.8 so I guess the manifold restriction is there. Higher than 1.6 is going out of efficiency range anyway, 1.4 is peak flow I think & should flow 540bhp (ish) if you can get it all in the cylinders.

My car feels livelier & just as fast if not faster than Buff's 3.0l Supra, we compared them the other day, mine is way way more responsive.
 
when would you say the .8 reaches full boost by? help me decide .8 or .6??? the car is mainly gonna be used for drift from what your saying dec im tempted to go .6, but then niall is saying .8. bearing in mind this is going in a s14 shell, so may not have to work as hard pulling a soarer shell :D
 
I'd be surprised if you were anywhere near 540bhp Declan, I was maxing UK Supra injectors and making 470bhp @ 1.7bar on a 3082 (same .62 exhaust, 35 compressor with anti-surge) and hks cams.

I think your soarers extreme light weight will help it a LOT!
 
yeah i think we need to know of the times u are reaching boost by i.e 3.5k on the .8 or 3k on the .6, dyl ur car is guna be so fast lol

niall ur only running 1.2 bar and made that much power, info on where u got ur posh inlet from lol
 
I'm not expecting my car to be making huuuge powers, it has plenty enough however many it has & has proven totally reliable for two years now almost. My car is probably 200kg less than the Supra so that has to make a huge difference I agree.

On injector sizes...550's if you work out fuel flows & therefore potential bhp its a theoretical 500 plus on a six pot, especially a short stroke engine ;)
 
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