Jump to content
SAU Community

Recommended Posts

paul - u got time to overlap your graph with king87s?

Converting rpm with speed makes it confusing

Google it :P There is a brilliant one for skylines on there. CBF doing it now... Ill have a play tomorrow after work ;)

When you compare the VQ25det with Variable cams to the VQ30det without, the turbo response and power seem very similar even though the engines are 500cc apart. At a guess the Vcam (vq35 cam actuator) upgrade for the RB26 would make it feel like a 2.8 - 3L in response, although it sells with a higher duration cam I assume, which may drop response back slightly again.

King87 u made 150hp@ 100km/h = winning.. awesome top end tho! But in all honesty wouldn't 2530's be better suited to a 3.o bro or 3.2/3 for the street?

Yeah it's defantly not a bad result. It's ok to drive on the street the lag isn't that bad to be honest but guess it just depends what you get use to and like.

They would be better with a 3L pushing them for sure.

Yeah I know what to expect and I will keep you all posted if and when it does let go.

Not sure what it made on 23psi it's got 25 @ 5000 RPM I will try dig up the dyno print out.

-5's for the win for street and track but agreed they could use a few more cubes behind them

On the street.

Either dial in the cam gears or go HKS V-Cam or 2.8lt or HKS V-Cam 2.8lt.

Will help with the low down.

Makes you wonder how the Mines R34 GTR is so responsive using 2530's on a 2.6ltr engine doesn't it?

It has NOTHNG at 4500 RPM. Look at the videos. It's a lag wagon if it "falls off". People bust a nut at how quickly it "revs". 5:1 or what ever they are plus the 6 speed give the illusion it's "responsive"

Between gears it's a bulldog, but you have to keep it spinning!

It has NOTHNG at 4500 RPM. Look at the videos. It's a lag wagon if it "falls off". People bust a nut at how quickly it "revs". 5:1 or what ever they are plus the 6 speed give the illusion it's "responsive"

Between gears it's a bulldog, but you have to keep it spinning!

so your saying it's a "bulldog between gears" (which IMO is what you want) but a pig from standing start?

Edited by Ants

It has NOTHNG at 4500 RPM. Look at the videos. It's a lag wagon if it "falls off". People bust a nut at how quickly it "revs". 5:1 or what ever they are plus the 6 speed give the illusion it's "responsive"

Between gears it's a bulldog, but you have to keep it spinning!

so your saying it's a "bulldog between gears" (which IMO is what you want) but a pig from standing start?

Not when you launch it from redline a 26 is not laggy and when your changing gears at 7.5 k there is no lag. A 26 with -5s has to be driven a certain way to be raced properly and the motor has to be built properly for this purpose to be reliable. -9s on a stock motor is a much better setup if you don't want to kill your motor.

Makes you wonder how the Mines R34 GTR is so responsive using 2530's on a 2.6ltr engine doesn't it?

I believe the HKS 2530's on the Mine's R34 GTR are modified.

And the RB26 ain't stock either :)

When you compare the VQ25det with Variable cams to the VQ30det without, the turbo response and power seem very similar even though the engines are 500cc apart. At a guess the Vcam (vq35 cam actuator) upgrade for the RB26 would make it feel like a 2.8 - 3L in response, although it sells with a higher duration cam I assume, which may drop response back slightly again.

That sounds very enticing if it would feel like a 2.8-3.0. On a 2.8 with vcam and -5 that would be the ultimate setup in terms of power and response. Antz I think you need to add a vcam to your advance spec and you probably wouldn't have to worry about going a 2.8 later down the track :)

Would love to hear from anyone who has gone from standard displacement to vcam with same turbos and comment on the results

Not when you launch it from redline a 26 is not laggy and when your changing gears at 7.5 k there is no lag. A 26 with -5s has to be driven a certain way to be raced properly and the motor has to be built properly for this purpose to be reliable. -9s on a stock motor is a much better setup if you don't want to kill your motor.

I completely agree with you on that one. I also think there is more to response than just gearing.

Having seen the Mines R34 GTR in action (in many different videos) you simply cannot conclude it has no balls under 4.5K unless you have a dyno chart to compare it with.

I believe the HKS 2530's on the Mine's R34 GTR are modified.

And the RB26 ain't stock either :)

Yes, they are very lightly modified with the ex. housing ported (very similar to what I did with my -5s ) but that's it. Its a built 2.6 alright but still a 2.6 and not a 2.7 nor a 2.8 stroker

Edited by Ants

so your saying it's a "bulldog between gears" (which IMO is what you want) but a pig from standing start?

Look at the video where it compares it with the supra. That left hander up the hill it falls off song and it takes a bit of time to get back to its "happy zone".

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

    • Before all the EFR fan boys come in, have a look at: https://www.garrettmotion.com/racing-and-performance/performance-catalog/turbo/g-series-ii-g30-825-58mm/ It also comes in a T4 1.06 divided housing. I would dare say if you want response & also decent power, this thing would chop.   AND apologies, just re-read your post, you've already bought the turbo... whatever you do, make sure you stick with divided housing and proper twin scroll manifold.
    • People have got to stop doing that. ShatGPT is not a search engine. It is a hallucination factory.   I also would recommend the 1.05. The .83 will "work" for you , in that it will be more responsive, but I think you'll find that it won't be anywhere near as good running it out to 8000rpm as the big housing will be.
    • Decided for the first time ever I would tow my car TO the track day on the same working theory as bringing tools and spares "if I have it I wont need it, but if I leave it behind i will 100% need it" all setup and ready to go out and try these A050 for the first time First session showed I needed to stiffen up the dampers a touch but still managed a few 1:21's without much effort. things were looking good. Came in a dropped the tyres down  to 26/28 as they had gotten to 35/33C from 22C cold The first lap of session two I managed to drop into 1:20's. Then in the second lap into the second session. Coming into T3 and I suddenly lost brake pedal followed by some huge rear end vibrations and scraping sounds. Got it back into the pits after session ended and found this. in the attached video, all of the wobble is in the hub its self, wheel is mint, and bearing feels tight. lKXLqpd - Imgur.mp4   Deciding it was a bent spindle I tried to find bearing/hub assembly locally but was unsuccessful so it was loaded back onto the trailer i luckily brought it on to drag it back home  
    • 1.05 you’ve gotta let it breath 
    • You have to continuously fill it to avoid dry running. Personally the transmissions I've serviced have never been bad enough to justify doing this because it is definitely a pretty complicated and somewhat risky procedure compared to simply draining the pan, measuring what came out, then refilling with the exact same amount.
×
×
  • Create New...