Jump to content
SAU Community

Recommended Posts

  • Replies 221
  • Created
  • Last Reply

Top Posters In This Topic

OK here it is the final product/s

RB25 BB turbo

Vg30 exhuast housing

T04B vtrim Compressor

Standard ceramic turbine wheel

Turbine snout enlarged to 52.2mm

result 15psi by 4100rpm

spool starts @2000rpm goes nuts @ 3600(hello tyre fry)

Result 266rwkw @ 17psi

Or Less power Quicker response

Same specs as above with

groove in inlet (same as standard rb25 inlet)(reduces compressor efficiency)

Turbine Snout 51mm

15psi by 3800rpm

spool @ 1800rpm no sledge hammer effect like above just smooth till 3800rpm

result 245rwkw @ 10-15psi will not make more power with boost increase

# Please note these specs bring the turbo right next to the surge limit. If surge occurs it can be supassed with a Greddy E01 or dual stage rpm activated boost control, adjustable cam gear etc. I had absolutely no surge with both these specs. Every car is different however.

*The most fun I had with this turbo was with the turbine snout @ 51mm(no groove) which put it right into the surge zone. I had dual stage boost control which went from 11 to 15psi @ 4000rpm and eliminated my surge problem. Was absolutely awesome fun getting wheel spin in 4th on acceleration......on 18" 275 tyres ->not very drivable in the hills with the sledge hammer boost build. Each to there own

* This turbo will not boost more than 16-17psi due to the turbine trim. It reaches max flow around that level anyway so extra boost would have no advantage.

For those in the know a Turbonetics Super Vtrim compressor will proide 400rpm earlier boost response...Untested by myself.

Happy Boostin

hmmm i was reading about that variable housing in 21 century performance, it sounds good in theory. but to tel you the truth i have never seen on or herd of one being used on a car? it sounds amazing.

BOOSTED: what computer are you running. i have a VG30 turb on my car now and i am going to modify it very simialr to what you have done to get about a 240rwc. because i am using the VG housing with a bigger A/R, will there be a need for the groove to reduce surge?? and am i able to contor the sure as i am running a MOTEC M4?

alot of queations i know, sorry :D . thanks, jonathan

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

    • Yeah good luck out there! Will be good to see a mighty GTST going harder than the GTRs
    • i will be there 😁
    • Hello!  i just finished manual swaping my r34 skyline with a r33 rb20de box(RB71C)box  When the car is running it squeaks crazy loud and it was smoking from the gearbox area. The gearbox is fine it was tested. The clutch slave cylinder seems like it doesn't fully releases the clutch. I want to ask if this noise is from the throw out bearing or could it be the clutch assembly or disk att.xFliq87Gzw6kImKBVqDebXkj0fBqymk0JaYeP3_3SlM.mp4
    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
×
×
  • Create New...