Jump to content
SAU Community

Recommended Posts

Chasing up a dyno sheet so we can do a little more analysis.

reality is I need stronger wastegates, but the car is just a response monster and it pulls like a freight train, I really don’t need the extra power just yet...especially when a C63 AMG couldn’t hold a candle to this don mega build....

1 hour ago, BakemonoRicer said:

Ben, yes Nismo R1 turbos on the car.

Everyone says they're akin to -7's but that makes no sense, I'm making 30kw more than what people estimated.

They certainly didn't let the Nissan out in this build Benny, because they built it with mostly stock engine components. ProSTOCK build. Even stock ECU ?‍♂️

  • Like 1

Well they put the fruit in the head. But I wish the bottom end was more fruity...

I'm suprised the owner didn't pay the little bit extra to run a set of forged rods......

Scott did laugh at the tune. The japs just love to throw a lot of fuel into it and be done with it.

 

That's about normal boost response for those size of turbos I thought? Especially when you have a half decent head. Remember manifold pressure does not equal lb/min of flow, it just means the turbos have pressurised the intake to that level. What's more important is rear wheel torque at 3900pm or wherever you're wanting to measure from. 

My head was stock, but I had cams and gears and  it made about 20psi at 38-3900 rpm on it's way to 24-25psi, which it almost held to redline. As per my opther comments, the turbos were at their limit and being outflowed, just like yours (mine were newer spec -9s with the better centre cartridge). 

Traffic light grand prix is fun, just don't blow 3rd :D

785nm of torque mate.
Don't want to take anything away from the result but it aint 785nm. Dyno was not set to derived torque which is the accurate at wheel reading on mainlines. Its more like 550-570nm which is still pretty stout.
On 14/07/2019 at 6:17 PM, BakemonoRicer said:

Ben, yes Nismo R1 turbos on the car.

Everyone says they're akin to -7's but that makes no sense, I'm making 30kw more than what people estimated.

You absolutely sure they are Nismo R1 then ? Output of over 350kw at only 20psi on 98ron seems very high does it not ? Also can you tell me how is R1 different than -7 turbos ? The specs supplied look identical to me. If I am missing something enlighten me as I am curious. Also your derived torque is on the bottom graph of your dyno sheet which is clearly under 600Nm as mentioned.

Nismo R1 Turbo: (Specs from RHD Japan)

Compressor Housing: T3 (A/R 0.42)
Compressor Wheel: T3 (Trim 55)
Bearing: Ball Bearing
Turbine Housing: T25 (A/R 0.64)
Turbine Wheel: GT25 (Trim 62)

Max. efficiency: 73%
Max. air pressure ratio (at boost pressure): 103% (1.35kg/cm2)


Garrett 707160-7 Turbo: (specs from Garrett)

Compressor Housing: T3 (A/R 0.42)
Compressor Wheel: T3 (Trim 55) - Ind: 44.5mm - Exd: 60.0mm
Bearing: Ball Bearing
Turbine Housing: T25 (A/R 0.64)
Turbine Wheel: GT25 (Trim 62) - Wheel Dia: 53.8mm

As abov Benny, Derived Torque is different. 

Here's an earlier graph before we finished tuning the car (it only ended up going to 380) and as you can see, and knowing the setup, there's no way it was making a genuine 1000Nm lol 

It was "zippy" but I wouldn't have called it a torque monster, it was only a 2.6 in the end. 

20170522_201505.jpg.305f37c5f5378da8355f9b640c5ba425.jpg

12 hours ago, admS15 said:
13 hours ago, BakemonoRicer said:
785nm of torque mate.

Don't want to take anything away from the result but it aint 785nm. Dyno was not set to derived torque which is the accurate at wheel reading on mainlines. Its more like 550-570nm which is still pretty stout.

am i missing something, it says derived torque on the dyno sheet?

yeah that's right it does show derived torque, just not at 785nm . Dunno where 785nm come from as the derived torque graph clearly shows increments of 50nm vertical blocks, and is labelled as such with 200 at 4th block, 400 at 8th block and has 11 blocks shown. So just under top of 11th block is about 540nm, similar to around what admS15 mentioned. I'm still intrigued at the 356.4kw at wheels on 20psi with 98. I have GT-SS turbos on my 33 which are almost the same turbo as -7 / R1 except with a larger compressor trim of 56 (vs R1 with 55 trim) and I can't get near that.

Usually it dynos at 310 - 330kw on 98ron at 22psi. Runs mid 11s at anywhere between 116 and 120mph.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Well, all the best with the new camry It was interesting to hear about the UK process, it is generally a lot more streamlined here with a shipping agent looking after all the import side (noting the exact final price can still be a surprise.....) and I've used a few different brokers on the japan (or US) side, and never had any trouble with any of them....luck of the draw I guess. You mentioned you didn't get the auction sheet (understandable since you bought it from a dealer, not auction), but I always try and get hold of that because they are pretty thorough. I've imported 2x R grade vehicles over the years and both were fine, repairs in Japan are pretty thorough compared to here in Oz.
    • BTW I measured the jack I have, it is 70mm at the saddle but you only have about 700 until it returns to 150mm high at the cylinder so it is good but no magic bullet.
    • My experience with Rising Sun Exports Before agreeing to the sale I tried to do as much research as I could (obviously), his Facebook reviews are 98% and he goes Live at least once or twice a week. I contacted 2 people in the UK who had used him for their imports, both had positive feedback. His explanation and talk through of the import process was thorough, answering any query no matter how stupid it was. It felt as soon as the money was sent, communication dropped off. I asked for shipping updates every 2 weeks or so, not wanting to pester him, he never had any updates. I wasn't informed the car had been dropped off at the port, I only found out by his Facebook story. I asked for the photos taken at the port, knowing he would need some for insurance purposes. I received a few 5 second clips and that's it. When asked again, he said his staff had them. Weeks later I asked again, he tells me he doesn't have any, but does have 50 photos from the original advert. I never received them. I eventually got the documents sent via WhatsApp after I mentioned the port was requesting them. I purchased a CarVX report, to find out the vehicle is a Grade R with recorded accident damage, first recorded in 2017 when it was first auctioned. He never told me the grade, then again I didn't ask. His response was "Grade R means nothing, it wasn't chassis damage". Still, I would have liked to have been informed about it. Jon prides himself on being open and honest when it comes to inspecting cars, it's his main job doing so at the auctions for customers. When the vehicle arrived in the UK I noticed a few little cosmetic issues. It's a 21 year old car so it wasn't going to be mint condition. The side skirts are cracked on each corner and the sealant is failing. The front grill on the bonnet/hood isn't secured very well, mounting studs are missing. Both minor things, but again, it would have been nice to be told. During a Facebook Live walk around video of the vehicle, he mentioned it has a front Whiteline anti roll bar/sway bar. While on the inspection ramp, I noticed the stock item has been installed. When first questioned, his response was "the ARB? Switched? Since when, it never had them". Since sending video and photo evidence I've not received a response. I'm probably being over critical of the overall condition of an old car, but all I wanted was honesty (which he claims to have). I'm aware I wasn't his only customer, he's busy doing XYZ but other reviews praise him for great communication with regular updates and photos, I felt I didn't receive the same treatment. 
    • I was able to get some underside photos while the car was on the ramp The suspension is all Altezza/IS200/IS300 so getting part's will hopefully be less of a headache
    • Welcome to my 2004 Toyota Mark ii IR-V Fortuna (series 2) With a 1JZ-GTE powerplant under the bonnet (hood) it'll give me plenty of scope for power upgrades. For those who aren't familiar with imports, the 1JZ-GTE is a 2.5L 6 cylinder VVTi engine with a single turbocharger. This has the factory R154 5 speed gearbox, along with a aftermarket 2 way LSD differential (brand unknown). Under the arches are a set of CST Zero 1 alloys, 18x9 +30 225/40 up front and 18x9.5 +15 265/35 on the rear. The car was quite low in Japan and there's evidence of the wheels catching the rolled arches/fenders. The tyre's aren't great so I'm in two minds whether to replace both or just the tyres and put up with the wider wheels on the rear. The car still uses stock brakes with the addition of some braided hoses. The exterior is stock with the exception of a BN Sports front bumper and a replacement Fortuna grill  Moving to the interior, the steering wheel has been replaced with a dished MOMO steering wheel (which will get swapped for my Momo Tuner for the time being) Defi Link Gauges are mounted above the climate controls and on the A pillar, the Oil Temp,Oil Pressure,Water Temp and Boost gauges should help with spirited and track driving  The stock seats have been replaced with some retrimmed Recaro bucket seats. Being a larger build these are a little snug, unfortunately the orange isn't for me so I'll look into replacing these down the line. Other modifications include a twin plate clutch, Blitz intercooler, Evolve alloy radiator, a stainless exhaust with decat, HKS EVC-S boost controller and coil overs
×
×
  • Create New...