New Garrett Gtx2860R / 2863R / 2867R

[Mick_o]

How is a GTX2863 crammed in a 707160 -5 foreign housing an 88lb turbo ???

GARRETT DID NOT PROVIDE ANYONE A COMPRESSOR MAP FOR A GTX2863 IN A DASH 5 HOUSING! !

its that simple.

I rest my case! Ahhhh thanks that was refreshing!

Thanks for proving my point without even realizing it

Now back to the gym for more benching bro. Or maybe you need those muscles to dig your argument into a deeper hole!

Edited October 7, 2015 by Mick_o

[mr skidz]

Pm me if you want.

stop wasting space on the thread.

Go back to work and do more oil changes and you might learn something

[Mick_o]

Lol you're a f**kwit mate simple! This isn't wasting space on the thread at all! People need more than just your opinion on here. Clearly yours is uneducated & now you've got nothing to argue you wanna get all "PM" on me!

Be sure to post your results and prove me wrong soon as you stop sitting on the fence and dreaming up what these "hybrid turbos" will do with all your theories!

[fatz]

This thread is now delivering

f**k yea

Can we have a dyno graph with a single, twins and a third axis for bench press weigh for comparison

[sneakey pete]

Lol.

I'll post something when its done.

Wouldn't exactly call them hybrid turbos though, just a front housing change.

[The Mafia]

lol.

Tone it down Mick_o.

Lets just discuss these turbos. They are an interesting upgrade.

Really looking forward to your results sneakey Pete.

Edited October 8, 2015 by The Mafia

[Piggaz]

What is the highest recorded "realistic" figure being pushed on RB using -5/2530/-10/RS - 0.64 hot sides?

[XGTRX]

Has anyone run mph with these

[scotty nm35]

Has anyone run mph with these

Only Hwy miles.

[mr skidz]

Lol you're a f**kwit mate simple! This isn't wasting space on the thread at all! People need more than just your opinion on here. Clearly yours is uneducated & now you've got nothing to argue you wanna get all "PM" on me!

Be sure to post your results and prove me wrong soon as you stop sitting on the fence and dreaming up what these "hybrid turbos" will do with all your theories!

I've never heard so much shit come from one human ever.

Your a f**king joke.

You clearly have an over inflated view of yourself.

I've countered all your shit talk comments with accuracy and all you got to say you simple f**k is ....aaahhhh...... yea your a f**k wit mate.

Please

[Piggaz]

I've never heard so much shit come from one human ever.

Your a f**king joke.

You clearly have an over inflated view of yourself.

I've countered all your shit talk comments with accuracy and all you got to say you simple f**k is ....aaahhhh...... yea your a f**k wit mate.

Please

Wow!

Anyway, having spoken to Simon multiple times about his setup, he has some interesting views about it all.

1 - heat management. He has said he could have put Atleast another half a radiator in the nose of his car. It was "OK" at 550 HP but at 620-650 he couldn't keep it cool.

2 - what that comparison doesn't show you is boost pressure. How much harder is the 63 working over the -5 here?

3 - even Simon himself says he should have put an Intercooler on it. Golf ball/garden hose.

4 - at what point does the factory piping call enough. It's only 60 mm with horrible sharp bends everywhere. The boost pressure to go from 550 - 650 HP was ALOT considering the size of the compressors. Flogging a dead horse comes to mind.

Maybe with a larger rear wheel/housing to accomodate the larger flowing compressor wheel would help.

At the end of the day you can throw all the compressor side at it you like, it still has to get out. That side of the equation hasn't changed.

HKS did a 2876 and it was a disaster. They also did the RS's which for their size never produced more power to warrant the lag that you cop over the -5/2530. (Gavin's back to back years ago showed this). All you're doing here is doing the same thing but with slightly smaller (pretty and shines) wheels.

GTR_Sean ran the GTX60's on his 2.8. They're now sitting on a shelf and went back to -5's.

Food for thought.

[GTRsean]

Has anyone run mph with these

Highest I ran with GTX 2860's, original front housings was 124MPH WSID.

BP98 23PSI stock cams blah blah..

[NissanForLife]

Look guys, I'm the guy who had the white 34 with 2863's in -5 housings, it made 489kwatw but at 33psi.
It was a mental track car, I actually never got a proper time with that power figure on new tyres, but at 440kw it was enough to hold the fastest lap record at QR for more than 2 years, it also held a few records in VIC with Aaron behind the wheel.
It wasn't all engine obviously, but since we are talking about turbo's and engines, I'll keep it on point.
My car ran hard for the first 2-3 laps, it really got hot after that and I mean 127deg coolant temps, the Rad was a custom PWR unit made for Targa tassie, the next step was to put another half RAD in front of it, but the real issue wasn't coolant temps, but EGT's and combustion temps, the dynamic compression ration must have been quite high and the intake heat at 33psi would have been very significant, you cant cool it quick enough, even with an after-market IC which I had without sprayers and dry ice, you start to push **** uphill.
The pipework is also very restrictive with twins, the bends are many, which also adds to the heat factor making a lot of turbulent air hotter and thus the amount of actual O2 will be down even at 33psi.
33psi at 40deg is a lot different than 33psi at 80deg.
Even though the GTX upgrade was fantastic, it did not suit well to endurance runs, it was for short sprints only with awesome results, but if it was my time again I would have gone the single route in a heartbeat now.
A few nice little 32's are over here in WA ahve shown me that and trust me they are setup nicely on singles, they do very well for sprints and they seem to be quite reliable and are not suffering from excessive heat issues.
Guy's if you are doing this upgrade for a ballistic street car and time attack sprints for 2-3 laps, go right ahead, you will love it, my car was a crazy machine on the street and short circuit runs, but for a proper circuit car, I can't say it enough, go the single route, just get a tuner who spends more time on low end and mid range to keep the tune linear for great drive-ability.
The singles around these days are fantastic, it's all down to the tune.
It also won't be long til the E turbo comes out, so the days of lag and need for a wastegate will be soon over
I don't own the car any-more, it's now in NSW.
I ended up buying a Juno 2008 Lemans car now, at 530kgs I'm loving it, it's reliable and very fast at only 250hp and it will leave my GTR for dead by around 6 seconds per lap on a 1min long circuit, I just need to get more seat time

[mr skidz]

Highest I ran with GTX 2860's, original front housings was 124MPH WSID.

BP98 23PSI stock cams blah blah..

shame you didn't try factory .42 comp covers especially since your boost is on the low side on pump.

Can't go wrong with -5's

[GTRsean]

shame you didn't try factory .42 comp covers especially since your boost is on the low side on pump.

Can't go wrong with -5's

Yeah true, I have 2530 front covers I was going to get machined to suit, but they may be too big? would probably work on the 2863's.

Anyway for my needs the -5's are fine, and I like the sounds they make

[mr skidz]

For simplicity and cost outlay -5's are definitely my choice for a RB.

[GTRsean]

For simplicity and cost outlay -5's are definitely my choice for a RB.

Yep, they are proven even though they are old. I did mod mine for more reliability though. Fitted some DIY brass bearing cages to get rid of the plastic/nylon cages that tend to crap out.

Unsure if the newer GTX runs the same crap cages or not.

[mr skidz]

Gtx cages are metal not sure on material tho

[NissanForLife]

There is a good reason Racepace don't push their cars past 500-550hp on twins, it's heat. If you just must run twins on a track past this, it's huge amounts of development and loads of coin.
The exponential factor really kicks in at 650hp I found, how the guys in the 80's ran 70-80psi F1 cars is beyond me, I guess the fuel plays the biggest part.
Methanol would help keep things cooler, but who is going to run that on a street car.
Water/methanol injection would also help bigtime for a circuit setup, maybe this would have been something for me to try?

[sneakey pete]

So you're saying you think the heat issue is cropping up due to less efficient compressor with the gtx60/63 compressors, different manifolds and the merge pipes?

Because all things being equal a single setup isn't going to have any different piping from where it passes under the passenger headlight onwards