Jump to content
SAU Community

Question For The Turbo Guru's ***pics Added***

Guilt-Toy

By Guilt-Toy,
in Engines & Forced Induction

 Share

Recommended Posts

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted (edited)

I got a new turbo put on, and used a 1.06 rear housing instead of a .82 rear and the car sounds allot deeper then before, the engine sounds the same and runs really good but the exaust note is tuffer and deeper...

oh its a GT3540 with 1.06 it used to be .82 ar and front is the same.

I was wondering if this is normal or should i look for a exaust leak or something ;)

Edited by Guilt-Toy
stolen_s15 Mentor

stolen_s15

Posted
Posted

I very much doubt its an exhaust leak mate, but obviously check the gaskets and what not.

Exhaust leak will generally sound alot louder, and not "tuff", "deep" or "throaty" but more rattly.

On a side note, how is the car to drive with such a large housing?

Cubes Grand Master

Cubes

Posted
Posted

The 1.06 on the 30det isn't too bad surprisingly.. It makes 1bar+ a little before 4000rpm.

The only real difference to the smaller .82 is the .82 begins making boost much earlier in the rpm; the larger 1.06 seems to make no boost no boost then within 400-500rpm it brings it all on but linear and smooth.

The 1.06 you loose that windmill feel at low rev's part throttle but by all means they still feel quite good on the 3ltr.

Guilt-Toy Grand Master

Guilt-Toy

Posted
  • Author
Posted (edited)
Not sure about you question but i have one for you!

What do you reckon of the bigger rear?

Yeah its good i wreckon, i can feel the car feels much more free off boost, and it seems to make 5psi by 3300rpm and full boost 1bar by about 3800. I have not upped the boost past 1 bar yet because i spent all my money on this turbo so there not even enough money to pay for extra fuel for road tuning either.

I very much doubt its an exhaust leak mate, but obviously check the gaskets and what not.

Exhaust leak will generally sound alot louder, and not "tuff", "deep" or "throaty" but more rattly.

On a side note, how is the car to drive with such a large housing?

Its good, I am thinking it has the same power at 9psi then it used to have at 15. So 20psi will be interesting, before i made 363rwkw on 25psi now it will be making that on 18psi i wreckon. Should be interesting

i would say that yes the larger housing would change the exhaust note, after all it is flowing a lot more freely, and is a larger chamber compared to before.

got lag at all tho?

Yes it raised the rpm for boost by about 300 - 400rpm

To the people inquiring about lag, he is running an RB30DET. From the dyno sheets i have seen they are normaly well on their way to making boost by 4000 rpm with the 1.06 rears.

mmmm yes. RB30DET.

Here are some pics from my mission last weekend, i took my time with it and used my old housings and gtr_etr sent me his 1.06 to swap with my .82 from QLD, thanks mate!... oh it took me about 4 hours all up to change it over by myself.

Have a look at the pics, i couldnt believe the difference between the two.

post-1240-1204149998_thumb.jpg

.82 left 1.06 Right

post-1240-1204150015_thumb.jpg

.82 left 1.06 Right

post-1240-1204150053_thumb.jpg

.82 left 1.06 Right

post-1240-1204150979_thumb.jpg

1.06 front .82 rear

post-1240-1204150076_thumb.jpg

Pic of changing it all over

post-1240-1204150283_thumb.jpg

Putting compressor cover on

Edited by Guilt-Toy
Guilt-Toy Grand Master

Guilt-Toy

Posted
  • Author
Posted

I know no one probly cares.. but i had some interesting fun with this new turbino on my car tonight

I gave it a quick street tune, just 3 hits in second gear only to fix the arf's up, got it down to 11.3 afr and far out.

I would have to say it has close to the same power before on only 18psi of boost.

This car is now going to be an animal, i was shocked after the third run and did not hit boost again, bit hairy going sideways and stuff.

cant wait to spend a few hours on the dyno with it. and on the map tracer you can see that the boost does come on 400rpm later, it goes to full load 19 at rev point 12 when before it used to be 11.

not bad! im going to like this new setup :)

FineLine Grand Master

FineLine

Posted
Posted

the larger housing is now on and yes it does alter the exhausrt note. Power comes on later tho that is to be expected on a 25.

The engine is on a mild tune at the moment making 335 killer wasps at 20 lb.

No timing or cam dial in yet. thats next weeks project I am hoping it may bring boost on a tad earlier as I dont think the power delivery would be much chop for track work. Any hoos, we'll see what happens with a few more pound of boost and some cam and timing work.

Guilt-Toy Grand Master

Guilt-Toy

Posted
  • Author
Posted

nah not yet, but i would like to once its tuned up

Sounds awesome.To you take the car to the strip much?
nice work guilt-toy

Sorry I missed your calls yesterday too - Left my phone in the car.

I still think you should put the WMI kit on and aim for 400rwkw :P

thats cool man, i will ring you in a sec

the larger housing is now on and yes it does alter the exhausrt note. Power comes on later tho that is to be expected on a 25.

The engine is on a mild tune at the moment making 335 killer wasps at 22 lb.

No timing or cam dial in yet. thats next weeks project I am hoping it may bring boost on a tad earlier as I dont think the power delivery would be much chop for track work. Any hoos, we'll see what happens with a few more pound of boost and some cam and timing work.

mine is a rb30det, so its not tooo bad.

these turbos are great for rb's !! my car sounds sooo much tuffer, especially in the mid range and just before it hits limiter, and when it hits limiter man it sounds like a animal! on low boost. i dunno if i will go much further then 22psi this time around

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

    • Shoota_77
      Shoota's R33 GT-R RB30/26

      By Shoota_77 · Posted

      I'm pretty much healed up post surgery so I spent another almost full day out in the shed re-arranging everything to make room for all of the shit that I've taken off the car.  I need to get everything off the floor and away from the car for when I start making a massive mess stripping off the remaining body deadener and then for the the painting process.  Almost got the shed to a point now where I feel I can actually start working on the car again (clean shed clean mind or something!).  Almost 11 years of accumulated car parts, building supplies, tools, junk, etc have taken a long time to get in some sort of order again!  Most stuff is now boxed up and in the back shed if it's not car related.  Most people would still be horrified walking into my shed but it's significantly better than it was before!   For those that saw my separate post the other day, yeah I ordered one.... This version- I convinced myself to stop being a clown, wake up to yourself and realise it will take you 5 weeks to make one by which stage you're over working on the car again...  Maybe I am getting on top of my "mental ailments" and making smarter choices.... $1450 delivered which will take my miserable half-dutch arse a few days to get over having spent that much!  If I don't have a use for it straight away after my car is off it I might even see if there is a "rental market" for them.  See if anyone wants to hire it for a period of time.  $25 a week or something like that.  I'll worry about that when my car is actually ready to come off it though as that might be a while away!! There's now no excuses now for not ending up with an underside you could eat off! Away for kids sport the next few weekends so hopefully can get the rotisserie assembled ready to go for the car to go straight on it the next available weekend.    
    • The Bogan
      Cleaning my wheels 😍

      By The Bogan · Posted

      I always use my Karcher, but it's only a little one that I picked up from Supercheap  The only issue I ever had with a pressure washer was when I was a kid cleaning coaches, they had a hi-po industrial sized petrol jobbie that would strip paint if you got to close I saying this, we have a fairly high power washer at work with a diesel powered heater that sprays water at about 60°c, it works great for removing old wax and road grime on the underbody after some foam cannon action, albeit from a "stand off" distance of a few feet
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Sorry no - The sandtrap adventure ended the day, happened at the end of the last session. At that time I wasn't hearing any weird noises nor were the brakes shuddering anymore. It was only when watching the videos that I remembered I had these sounds early on!
    • MBS206
      Mistakes were made, my R34 Story

      By MBS206 · Posted

      Did the noise appear after your sand trap adventure? Could be something got dislodged and is playing rub rub. Even a rock wedged somewhere.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Is there a shroud around the tailshaft spline into the back of the box? They can rub and make a horrible noise if they are not on straight/damaged. The heat might have caused it to grow too much in one direction and rub.
×
×
  • Create New...