Jump to content
SAU Community

R34 Gtr Garrett -5 Turbo Lag, Need Advise

baicai

By baicai,
in Engines & Forced Induction

 Share

Recommended Posts

  • Replies 343
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Popular Posts

mr skidz
mr skidz

what are people doing?chopping guys with -9's lol

GTRPSI
GTRPSI

Ok so your saying your S2000 started from 6K and red lined at 9K so you had a 3K window and you drove to those points when you wanted to go quick. (like all S2000's) So whats your points on the GTR,

Mick_o
Mick_o

Or maybe they made the wrong choice in turbos? A tune isn't gunna do "miraculous things" to make turbos come on! Everything around it is responsible. As said before its having a good intake, a good

Posted Images

XKLABA Grand Master

XKLABA

Posted
Posted

Nah just the dirty thirties that keep breaking gearboxes

LOL!!!, *sniff sniff sniff* I smell dirty thirty envy :D

Don't worry and keep trying, you may beat one one day, just remember " I think I can I think I can i think I can" :P

Any gearbox behind a engine pumping the better part of 3x the factory out put is already living on borrowed time no matter if it's a 2.6 or 3.0 :/

  • Like 1
baicai Community Regular

baicai

Posted
  • Author
Posted

Hi guys

After more research have decided to get the following.

1. Dump pipe: HPI dumps 76mm or Tomei expreme 68mm, which one is better?

2. Manifold: when I get the dumps installed should I also get exhaust manifolds as well? Again HPI vs Tomei expreme which one?

3. Exhaust: Custom twin 3inch with twin cats into 4 inch or twin 3 inch Y pipe into 3.5 inch off the shelf Tomei?

Any feed back from people who have these similar parts would be much appreciated.

Piggaz Grand Master

Piggaz

Posted
Posted

Hpi

Stock manifolds. Port match them if you want. I'm making over 470 rwkw through -5's on stock (although tickled to match the ported exhaust ports and match the turbine housings which have been taken out to gasket size) manifolds. The Tomei ones give you nothing apart from a lighter wallet and a sticker. Nice paper weight though when they crack!

Twin 3 inch into a proper 4 inch.

Put the stock airbox back in.

Play around with cams. Advance intake, retard exhaust.

Report back.

That's really as much as you can do before engine out, increasing capacity and the wallet emptying exercise that comes with turning that corner.

  • Like 1
baicai Community Regular

baicai

Posted
  • Author
Posted

Hpi

Stock manifolds. Port match them if you want. I'm making over 470 rwkw through -5's on stock (although tickled to match the ported exhaust ports and match the turbine housings which have been taken out to gasket size) manifolds. The Tomei ones give you nothing apart from a lighter wallet and a sticker. Nice paper weight though when they crack!

Twin 3 inch into a proper 4 inch.

Put the stock airbox back in.

Play around with cams. Advance intake, retard exhaust.

Report back.

That's really as much as you can do before engine out, increasing capacity and the wallet emptying exercise that comes with turning that corner.

Hi piggaz thanks for the tip for the exhausts, with regards to the airbox are you saying it will lower the lag a bit compared to pods? And at what power level later on do I need to ditch the airbox?

Piggaz Grand Master

Piggaz

Posted
Posted

Well as I said in my PM, I'm still running an airbox at 470 rwkw plus.

Unless the pods are boxed off, I can't help but think about the hot air you're supplying the engine for starters. The factory box has an intake from the passenger guard which is a damn healthy size and the front snorkle. I've always wanted to do a back to back between pods and the airbox but I can't see it being a restriction as yet.

GTRPSI Mentor

GTRPSI

Posted
Posted

Lots of GTRs running 3.5" without issues, but bigger is better, i would also go 4".

Make sure you have enough ground clearance under the rear subframe and chassis if your lowered and get it tucked up tight to the car, nothing worse than dinting and scraping it over speed humps.

  • Like 1
mr skidz Veteran

mr skidz

Posted
Posted

Well as I said in my PM, I'm still running an airbox at 470 rwkw plus.

Unless the pods are boxed off, I can't help but think about the hot air you're supplying the engine for starters. The factory box has an intake from the passenger guard which is a damn healthy size and the front snorkle. I've always wanted to do a back to back between pods and the airbox but I can't see it being a restriction as yet.

is your 4" loud? just 2 mufflers?
XKLABA Grand Master

XKLABA

Posted
Posted

I have the system they are describing on my 34 and it is quiter then the 80mm Jap catback that came on the car and I have the rear diffuser fitted without having to modify it :thumbsup:

Though for a 2.6 with -5s 3.5" would be plenty

The snorkel from the airbox to the side gaurd will be blocked, pull it out and remove the cap, airbox v pods will have 2/5ths of F all difference to lag, it's the hard pipe bit that bolts to the turbo that needs modifying, that is all I have done to my 3.0 and I have run up 458kws at all 4 with fancy -10s

breaker1845 Community Regular

breaker1845

Posted
Posted

While we are on the topic of exhausts. I've got hks gt-ss (-9's) turbos going in atm with hks dumps.

Saw a bargain the other week for a full 4" decat exhaust with tuned length front pipes.

I am considering buying it as I have a 3" bolt on jap system with high flow cat and front pipes but the cat-back has 2.5" restrictions inside I believe.

Obviously it will be noisy but I am afraid it will be a bit crazy on the noise scale. Only looking to push like 330kw later on when I do the other supporting modifications.

I can't decide so looking for some input.

Is it worth getting the 4" now (or at all), or safer to stay with the 3" and upgrade to a 3.5" later when I will be pushing to 330? The car is a daily so legalities are another issue.

mr skidz Veteran

mr skidz

Posted
Posted

While we are on the topic of exhausts. I've got hks gt-ss (-9's) turbos going in atm with hks dumps.

Saw a bargain the other week for a full 4" decat exhaust with tuned length front pipes.

I am considering buying it as I have a 3" bolt on jap system with high flow cat and front pipes but the cat-back has 2.5" restrictions inside I believe.

Obviously it will be noisy but I am afraid it will be a bit crazy on the noise scale. Only looking to push like 330kw later on when I do the other supporting modifications.

I can't decide so looking for some input.

Is it worth getting the 4" now (or at all), or safer to stay with the 3" and upgrade to a 3.5" later when I will be pushing to 330? The car is a daily so legalities are another issue.

just remove the 2.5" restrictions for 330@wheels.
baicai Community Regular

baicai

Posted
  • Author
Posted

Found this about Nismo inlet pipes which says gives better response and boost pick up.

http://www.r33gt-r.com/2011/10/nismo-air-inlet-piping.html

Has anyone installed the Nismo pipes or a Greddy induction kit to their car, feel any difference?

Piggaz Grand Master

Piggaz

Posted
Posted

Found this about Nismo inlet pipes which says gives better response and boost pick up.

http://www.r33gt-r.com/2011/10/nismo-air-inlet-piping.html

Has anyone installed the Nismo pipes or a Greddy induction kit to their car, feel any difference?

Modify the twin turbo pipe for $50. Good enough.

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      Cheers. Skyline is back on the menu, can’t get rid of it. It’s like a child you don’t want, or herpes 
    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      Welcome back brother 
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      I got back to Japan in January and was keen to get back on track as quickly as possible. Europe is god-awful for track accessibility (by comparison), so I picked up a first-gen GT86 in December just to have something I could jump into right away. The Skyline came over in a container this time and landed in early January. It was a bit battered after Europe, though—I refused to do anything beyond essential upkeep while it was over there. The clutch master cylinder gave out, and so did the power steering. I didn’t even bother changing the oil; it was the same stuff that went in just before I left Japan the first time. Naughty. Power steering parts would’ve cost double with shipping and taxes, so knowing I’d be heading back to Japan, I just postponed it and powered through the arm workout. It took a solid three months to get the car back on the road. Registration was a nightmare this time around. There were a bunch of BS fees to navigate, and sourcing parts was a headache. I needed stock seats for shaken, mistakenly blew 34k JPY on some ENR34 seats—which, of course, didn’t fit—then ended up having the car’s technical sheet amended to register it as a two-seater with the Brides. Then there’s the GT86. Amazing car. Does everything I want it to do. Parts are cheap, easy to find, and I don’t care what anyone says—it’s super rewarding to drive. I’ve done a few basic mods: diff ratio, coilovers, discs, pads, seat, etc. It already had a new exhaust manifold and the 180kph limiter removed, so I assume it’s running some kind of map. I’ve just been thrashing it at the track non-stop—mostly Fuji Speedway now, since I need something with higher speed after all that autobahn time. The wheels on the R34 always pissed me off—too big, and it was a nightmare getting tires to fit properly under the arches. So I threw in the towel and bought something that fits better. Looks way cleaner too (at least to me)—less hotboy, less attention-seeking. Still an R34, though. Now for future plans. There are a few things still outstanding with the car. First up, the rear subframe needs an overhaul—that’s priority one. Next, I need to figure out an engine rebuild plan. No timeline yet, but I want to keep it economical—not cutting corners, just not throwing tens of thousands at a mechanic I can barely communicate with. And finally, paint. Plus a bit of tidying up here and there.  
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Nope, needed to clearance under the bar a little with a heat gun, a 1/2" extension as the "clearancer", and big hammer, I was aware of this from the onset, they fit a 2.0 with this intake no problems, but, the 2.5 is around 15mm taller than a 2.0, so "clearancing" was required  It "just" touched when test fitting, now, I have about 10mm of clearance  You cannot see where it was done, and so far, there's no contact when giving it the beans Happy days
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      It's been a while since I've updated this thread. The last year (and some) has been very hectic. In the second-half of 2024 I took the R34 on a trip through Germany, Italy, France and Switzerland - it was f*cking great. I got a little annoyed with the attention the car was getting around Europe and really didn't drive it that much. I could barely work on the car since I was living in an inner-city apartment (with underground parking). During the trip, the car lost power steering in France - split hose - and I ended up driving around 4,000kms with no power steering.  There were a few Nurburgring trips here and there, but in total the R34 amassed just shy of 7,000kms on European roads. Long story short, I broke up with the reason I was transferred to Europe for and requested to be moved back to Japan. The E90, loved it. It was a sunk cost of around EUR 10,000 and I sold it to a friend for EUR 1,500 just to get rid of it quickly. Trust me, moving countries f*cking sucks and I could not be bothered to be as methodical as I was the first time around.
×
×
  • Create New...