Author |
Message |
Blake Gloyn
TryHard manawatu soarer JZZ30 TT
Posts: 405 Reg: 02-2006
| This may interest some of you. My mates car is a Z32 300zx V6 3 litre manual with a zed link computer, 720cc injectors,mild cam upgrade,built motor,mild head port. Radiator has been replaced with smaller thicker one, further forward, on a angle, to allow the fitting of a single garrett TO4z (between motor and radiator) A 2" steam pipe comes forward from each bank of exhaust ports(after the 3 cylinders exhaust flow has merged together) and merge into the collector. 48 or 50mm turbosmart w/gate. 22psi. the first exhaust housing was single entry .96, got about 390rwkw(hub dyno) but car was laggy, used to bog in first and second gear at drags, so changed to a .7 twin entry exhaust housing. Lost 50 horsepower, spool up did not improve. tried .8 single entry housing , for same result, still down the 50 horsepower, still no better at spooling up. went back to original .96 housing, regained the 50 horsepower, but still had the bogging. A chance conversation at the drags with forum member LITH, got him thinking about the benefits of a twin entry turbo, which Lith reckoned was ideal for 6 cylinder motors(and also really suits the two cylinder banks of a V- motor.) So he got a twin entry housing, which was a 1.00( virtually identical in a/r to his .96) and made a new collector that suited the twin entry housing. he drove the car before getting a retune, and said it felt like it was spooling up 700rpm earlier. had it tuned and dynoed yesterday, and dyno graph showed it spooled up about 300rpm earlier, but at 4500rpm, it has 30% more torque(650Nm compared to 500) and with no timing added, yielded 405-410rwkw at peak. the tuner found that it could take much more timing, and added up to 7 degrees at top end !!! which yielded 429rwkw and was still climbing when they hit the rev limit(set too low). Timing was then taken out to reduce power back to low 400s, because (i think) the early links don't have temperature compensation. Overall the tuner felt the car was much more happy, loved the new combination of twin entry housing and twin entry manifold. Hope this info helps someone, without going through the massive effort and expense that my legend mate did. _________________ |
James Harris
Goo Roo QLD SOARERLESS :-(
Posts: 2604 Reg: 07-2005
| too hard to read |
Daniel Clarke
Goo Roo NSW TT 2.5L 6 cylinder
Posts: 4759 Reg: 03-2006
| This may interest some of you. My mates car is a Z32 300zx V6 3 litre manual with a zed link computer, 720cc injectors, mild cam upgrade, built motor, mild head port. Radiator has been replaced with smaller thicker one, further forward, on a angle, to allow the fitting of a single garrett TO4z (between motor and radiator), A 2" steam pipe comes forward from each bank of exhaust ports(after the 3 cylinders exhaust flow has merged together) and merge into the collector. 48 or 50mm turbosmart w/gate @ 22psi. The first exhaust housing was single entry .96, got about 390rwkw(hub dyno) but car was laggy, used to bog in first and second gear at drags, so changed to a 0.7 twin entry exhaust housing. Lost 50 horsepower, spool up did not improve. Tried 0.8 single entry housing , for same result, still down the 50 horsepower, still no better at spooling up. Went back to original .96 housing, regained the 50 horsepower, but still had the bogging. A chance conversation at the drags with forum member LITH, got him thinking about the benefits of a twin entry turbo, which Lith reckoned was ideal for 6 cylinder motors(and also really suits the two cylinder banks of a V- motor.) So he got a twin entry housing, which was a 1.00( virtually identical in a/r to his .96) and made a new collector that suited the twin entry housing. He drove the car before getting a retune, and said it felt like it was spooling up 700rpm earlier. Had it tuned and dynoed yesterday, and dyno graph showed it spooled up about 300rpm earlier, but at 4500rpm, it has 30% more torque(650Nm compared to 500) and with no timing added, yielded 405-410rwkw at peak. The tuner found that it could take much more timing, and added up to 7 degrees at top end !!! Which yielded 429rwkw and was still climbing when they hit the rev limit(set too low). Timing was then taken out to reduce power back to low 400s, because (i think) the early links don't have temperature compensation. Overall the tuner felt the car was much more happier, loved the new combination of twin entry housing and twin entry manifold. Hope this info helps someone, without going through the massive effort and expense that my legend mate did. _________________ Easier to read now James ? Thanks for the INfo Blake Im no english nazi, but seems easier to read now, hope ya dont mind champ ! |
Evan Kaio
TryHard The Hutt '91 UZZ31
Posts: 347 Reg: 01-2007
| Blake's post wasn't so bad to read. That aside, I had seen the 300zx at Masterton last month and checked out the set up, I have to say I was impressed and your mate, (can't remember his name) did say that he thought there were a few problems and some more improvement to be made. Good to see he's got things sorted. Did you go to Masterton on the weekend? |
Evan Kaio
TryHard The Hutt '91 UZZ31
Posts: 350 Reg: 01-2007
| How's the 2JZ project going? |
Blake Gloyn
TryHard manawatu soarer JZZ30 TT
Posts: 407 Reg: 02-2006
| didn't go to masterton due to torque convertor not having arrived from australia after being repaired. 2j project is not moving at this stage(in fact it has made no progress in 2 years! , but i am currently finalizing the exhaust manifold. |
Blake Gloyn
TryHard manawatu soarer JZZ30 TT
Posts: 408 Reg: 02-2006
| and thanks daniel. i appreciate it. |
Blake Gloyn
DieHard manawatu soarer JZZ30 TT
Posts: 764 Reg: 02-2006
| As an update to this car, the owner replaced the Zedlink(an early Link computer) with a new Link G4 extreme, and the car made 460 kW. We believe the big jump in power was mainly due to better ignition control. He then replaced the 3" thick intercooler (700mm long X 280mm high) with a 4" thick core, and power went to 500kw at the hubs, which is about 450rwkW on a Dyno Dynamics i guess. I have been in it, and it scares me! |
Ali Saeed
Goo Roo WA Looking for a Manual VVT-i
Posts: 3876 Reg: 09-2007
|
Blake Gloyn wrote on Tuesday, May 01, 2012 - 06:05 pm:I have been in it, and it scares me!
yeh because its a nissan |
Evan Kaio
DieHard "Beautiful sunnny, (our Coach sacked most of our All Blacks) 'Canes' country '91 UZZ31. 92 TT
Posts: 951 Reg: 01-2007
|
Blake Gloyn wrote on Tuesday, May 01, 2012 - 06:05 pm:I have been in it, and it scares me!
Just think how much your 2JZ TO4Z will scare you. |
Blake Gloyn
DieHard manawatu soarer JZZ30 TT
Posts: 766 Reg: 02-2006
| they don't feel as fast on the strip, somehow. Could be a number of factors... No power poles flashing past,no oncoming traffic, no side roads, no roadside drains, and WAIT!!!! there's a car trying to overtake you!(the guy in the other lane) At the drags is like driving on the motorways in UK, you have little concept of how fast you are going, until you have to slow down in a hurry |
Blake Gloyn
DieHard manawatu soarer JZZ30 TT
Posts: 767 Reg: 02-2006
| Evan i noticed the speed tech dyno is set on DIN, not SAE, so your hub kW are a direct comparison to a dyno dynamic rolling road Dyno. Which is why your car read the same on the rolling road dyno at Powercruise. |
Evan Kaio
DieHard "Beautiful sunnny, (our Coach sacked most of our All Blacks) 'Canes' country '91 UZZ31. 92 TT
Posts: 952 Reg: 01-2007
| So SAE would be a higher reading? |
Blake Gloyn
DieHard manawatu soarer JZZ30 TT
Posts: 768 Reg: 02-2006
| yes, about ten percent higher. |
Ross Pesina
DieHard Vic Soarer V8, Soarer T, Soarer TT, Supra TT.
Posts: 641 Reg: 08-2006
| Thanks for posting up Blake. Some very good info. Can't believe a thicker intercooler would make that much difference! |
Blake Gloyn
DieHard manawatu soarer JZZ30 TT
Posts: 775 Reg: 02-2006
| Ross, i have a feeling that you'd need to be developing this kind of high horsepower to approach the limits of a well designed 3" core. Certainly saw no power gain trying the same trick(going to a 4" core) on a friend's 1jz soarer with GT35R( 325kW at 20psi). The inlet temps did hold steady for longer-however the day was much cooler also. |
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