I want vids

Congrats on your new baby...LOL...

 

This is giving me more inspiration to hurry up and do the turbo setup on my 3.5 motor, damn the power must be crazy! With size turbo are you using mardi? 13.6 psi at effing 3500rpm! I need to know! MARDI

 

I got 4.4 V when I dynoed at 370 whp. So using some linear approximations, 4.78*370/4.4 = 401 hp.

Or if the Z32 maf is good for 520 chp at 5.1 V, then 4.78*520/5.1 = 487 chp, or about 404 whp.

Pretty impressive!

You sure you got enough maf left for 16.5 psi?

 

why don't you get it tuned before you go to the track. An extra $150 for an hour of dyno tuning, probably make a lot more power. If stephens calculations are right, 400 whp seems low for 13.5 psi, doesnt it?


maybe the port and polished heads do not flow as much as the 3.5?
maybe the vq30 cams?

I think the 350z guys are making more power at 14-15 psi on a 8.5 compression ratio engine with stock heads. They are making like 450-480. At 18-20 they are making like 520-540.

 

I was trying to find some numbers on my350z.com , I only found one but he has build heads and built engine, I am guessing 1 mm oversized ferrea valves and a port and polish on the heads.

573rwhp @ 14.5 psi
CJM Built Engine, CJM Built Heads
Greddy Turbo Kit, HKS FCON V Pro
CJM Fuel System w/ CJM 1000cc Injectors
Tuning by CJM

that was in someones sig

Found this by the same guy his name is Phunk




SGP Car

http://store.yahoo.com/sgpracing-store/ab03ni35.html

619 Rwhp/ 561 Ft/Lbs on 93 Octane and 17.5 Lbs of boost



http://www.cardomain.com/ride/834639

603 hp and 583 lbs of torque

 

You don't think "highway" tuning will work?

And no, 400 whp for 13.5 psi does not seem low to me. Considering 10 psi averages about 350 whp.

 

Also, I wouldn't accept some of the 350Z guys "whp" and "psi" claims.

They have a big competition on who produces more whp for less psi, so they fudge the numbers by using misleading SAE correction factors, race gas, etc.. Plus, most of these big numbers come with cams and headwork.

 

It's low for a vq35 motor.......

 

i agree mardis perfectly capable of tunning the car off the dyno

and the power guestimates seem about right for a 9:1 3.5/10:1 3.0

i seem to remember 01 5spd max made 401whp at 14psi so pretty close

 

So what track is the show taking place at???and when?? I would love to see it run!

 

its a 3.5

 

screw the guestimates...lets get this thing on a dyno!

 

I was mistaken on the 3500 13.5psi.

This data was collected on the last run of the day while trying to lock 16.5psi on the EBC, it was close but not quite locked at 16.5psi.

RPM---PSI---MAF---AFR--Duty-HPv--HPd
3540--6.9---3.84---11.6--30--392--338
4020--13.6--4.36---10.8--46--445--338
4540--15.8--4.57---10.4--57--455--419
5030--15.8--4.71---10.7--63--480--463
5500--15.6--4.80---11.1--67--489--493
5910--15.6--4.85---11.4--68--495--500
So lets guess the rest...
6500--15.6--4.90---11.5--70--500--515
7000--15.6--4.95---11.5--73--505--537
7200--15.6--4.97---11.5--75--507--552

HPv estimates are using Stephen Max's "Or if the Z32 maf is good for 520 chp at 5.1 V, then 4.78*520/5.1 = 487 chp, or about 404 whp" Lets remember this is based on JWT info and timimg is allways conservative with them. And I think 15% drive line loss is a bit more realistic.

HPd is based on injector flow using 0.575bsfc.

I'd be shocked if my set up ever made as much power as an SGP tuned dual bb turbo setup with their ported heads, valves, cams SGP spec ECU,etc, no way its gonna even be close. I still have juice though

The highest MAFv I ever saw with the 3.0L was ~4.90v @7200 with 18.5psi. So it is for sure making more power. Now the ECU is tuned by JWT for a stock 10:1 3.0L motor, this means conservative timing. The AFR is suprisingly good, but still a bit rich for my taste. Not that this will increase the MAFv but adding timing and leaning it out a bit should help. I have an spoken with JWT about a 90mm lightning MAF based retuned prom, For $100 + the MAF I cant go wrong. EMU is not an option yet, AEM EMS might just be. I might just ask JWT for a 100octane race tune to be sure the timing is good

~400hp from 3700 up aint too bad. Lets remember, peak is one thing, power under the curve is another, power to the 3.5!

Speed Unlimited Brackets at Maryland International Raceway 8/19 6:30p
Speed Unlimited Brackets at Maryland International Raceway 8/26 6:30p
IMSTAR at MIR 9/11 10a.

Donations to the dyno fund can be sent via paypal to matchoup@hotmail.com

Dont forget to visit my sponsor www.redlinemax.com for great deals on parts that can make you maxima almost as fast as mine!

And for the last godam time if you have questions about the setup look at my frickin home page!

 

I'm speechless

Ladies and gentlemen...we're witnessing history in the making

 

Sooo... what's your setup?

 

I looked at your homepage but what kind of AFPR is that?

 

I smell 10's.....

 

Yes, time to show those turbo'd GTP guys what it's all about. Only have to beat a 10.874 to be faster than their fastest "street" car. They have one running 10.195, but that thing is stripped to the bone, polycarbonate windows, way overbuilt engine, insane head/cam upgrades, etc.

Come on Mardi, we know you got it in you!

 

Guy I know just went 10.92 @ 125.5 in a grand prix GT turbo last week. Pretty impressive. Still a normal street car.

 

Really? I was just going based off of the 1/4 mile registry at ClubGP. Maybe he just hasn't posted it yet, but that would make him the 3rd fastest GP in the world (or something like that).

 

I don't know if he's posted it there but I would assume so since he's a regular member there. The owner of the shop he works at, ZZP, is number one on that list. He said in his post that he's now number 3 himeself so maybe they didn't update the list.

Edit: He's on there... Tim Beek

 

ZZP doesn't have the fastest GP, Intense does. ZZP has that 10.8 run (2nd fastest on the list), Intense has the 10.1 run.

ZZP does have the fastest STREET car though.

 

I guess I was thinking of the street cars. Because I knew they had the fastest street GP.

 

So I think I am at the point of diminishing returns with my current turbo. Its a T4 P trim 60-1. I beleive I am out of its range for flow. I think I need a GT40 88trim. Check this link and look at the maps for the 60-1 and GT40, you will see what I mean.

http://not2fast.com/turbo/glossary/t...orDutyCycle=69

 

I agree...man they are pricey SOBs though.

http://www.atpturbo.com/Merchant2/me...egory_Code=GRT

 

Also, why are you planning to keep the boost around ~16.5psi?

You should be able to push well past that, right? Fuel octane?

 

I believe he is still breaking in the motor a bit, maybe not tho. But obviously he is thinking about turning up the boost, but because his turbo like he said is already out of it's flow range, he couldn't put the boost up with that turbo, which probably means(like he said) he's going for a gt40 turbo now. That obviously shows he's not settling for 16.5psi, he's hungry for more, but his current turbo is outta breath and can't produce more psi than what's he's already at. Wait till he gets the new gt40 turbo, I smell 20+psi and 600+whp. YEAH

 

She is broken in enough. I could push the turbo more, but it will just be hot air. I have nitrous jets up to 125hp If I can find smokin deal on a GT40R I'm in. Perhaps a T66 dBB.

 

I'll find ya one...eventually.

 

Oh you are absolutely out of the efficiency of th 60-1. Their peak efficiency island is between 6 and 12psi. You were out of its best efficiency when you were on the 3.0. That's one of the things I've always wondered about some of the kits that are out. PFI comes with a 60-1, Turbonetics kit for the 350Z comes with a 60-1, etc. 60-1 is a turbo that likes lower pressures. I kindof wondered if and why you were sticking with the 60-1 with this built motor, it's not even really that appropriate for a 3.0L at the boost you were running. You aren't completely off the map but you are way to the outside at every point I plotted using your datalogging, meaning of course you are creating more heat and less power than you could be with a more properly sized turbo. There are better choices out there.

Using the info you datalogged above, last night I threw it into my turbo calculator and was checking some different maps. The 88mm 54 trim GT40 is in the same situation as the 60-1 but to a lesser extent. You are only in the peak efficiency for a short while between like 4500-5500rpm and then you start to go far to the right again. It doesn't leave you much headroom at all. For fun I bumped the boost up to 20psi... you are off the map with the 88mm 54 trim.

GT40 54 trim 88mm 15psi




GT40 54 trim 88mm 20psi






The GT42 106mm 53 trim looks good at 15.6psi, and much better at 20psi, but has your spool REALLY close to the surge line. On it at two points infact. If you spool any earlier with it, you'd be surging some. It has you in the peak efficiency island from about 5800-7200.



GT42 53trim 102mm 15psi




GT42 53trim 102mm 20psi



Continuing on next post since I can't post any more pictures on this one....

 

...continuation of my last post so I can post more pictures...

The GT42 94mm 56 trim looks great at 15.6 and great at 20 imho. If I were in your position and looking for 20psi the GT42 94mm 56 trim is the turbo I would purchase. It looks best at both 15psi and 20psi incrememnts. If you want me to plot some other pressure levels I can. I took some screenshots of the maps with your info overlaid on it. The web page you linked only showed the plot of the redline point for me, it wasn't showing anything else. Maybe I did something wrong though.

GT42 56trim 94mm 15psi




GT42 56trim 94mm 20psi

 

lol so in the hour or so it took me to make these posts with the pics it looks like you said you aren't gonna go higher than 16.5psi, so that makes the 20psi info a bit useless for now but the 15psi info should be good, and I'm sure you can imagine where 16.5psi would be on there. If you want me to plot any more maps like this let me know I have tons of them.

T61 (SP61, PTE61), T66 (SP66, PTE66) both look very good, as does T72 (SP72, PTE72), depending on where you in your powerband you want to have peak efficiency. T61 and T66 both still use P-trim, while T72 is a Q. I don't have the map handy but I suspect a T04R/PTE67 might be good too, available with P or Q or GT 76 trim exhaust wheel.

Of all the turbo options I've listed now, based on 16.5psi and cost, I'd say I like the looks of the T61 and T66 the best. The GT42 56 trim looks awesome too but that's like a $2200 turbo.

 

Do a GT40R map, if you don't mind Neal. This is the turbo I think we are talking about...not the old GT40 turd that would barely support 600bhp.

 

Here's a more recent/current non-BB GT40 map, which is able to support 700+bhp at just over 20psi:

This may be Mardis' answer, if he's not worried about spooling as fast as possible.

 

Here it is. GT40R 56trim based on 15.6psi data.

 

show me a maxima with a ~9.5:1 compression 3.5 with ANY psi dyno please

same goes to you spanishrice... And if you want to bring a 350/g35 into the picture, make sure they are using maxima cams.




Matt, are you still using the smaller turbine housing? If you are, ever think about switching back to ther larger one and see how it flows now?

 

Version 2 of the GT40 wheel at 15.6psi.

 

That's absolutely ideal IMHO...then again this is all theoretical. I highly doubt he'll flow 60lbs/min since his volumetric efficiency isn't 100% and makes quiet a difference.

Definitely NOT a bad choice and way better then the 60-1 he has now.

 

He's using the .81 I think he switched to that from the .58 after he found out it was choking him badly.

 

Definitely a good choice too and a bargain probably, since it has a journal bearing.