So who's gonna use this turbo?

Skeen · Post by **Skeen** » Oct 25, 2005 2:35 PM

http://boostjunky.com/gallery/turboNota ... 353?full=1

He probably doesn't have any power before 4.5k, but I bet it's significant when you get there.

rundatrack · Post by **rundatrack** » Oct 25, 2005 4:43 PM

I really like the wheels on that car...

Wonder if there is anything done internally that would help with getting it to spool quicker.....

gol10dr1 · Post by **gol10dr1** » Oct 25, 2005 6:24 PM

thats a holset truck turbo!!!!!!!!!!! good luck with that one. all those swedes use it to make rediculous power numbers.

Monotalonawd · Post by **Monotalonawd** » Oct 25, 2005 6:47 PM

[QUOTE="gol10dr1"]thats a holset truck turbo!!!!!!!!!!! good luck with that one. all those swedes use it to make rediculous power numbers.[/QUOTE]

Seems more like a Garrett t4 or t3/t4 judging by the look of the compressor cover (had one before). As for the Holset turbos in general, a lot of guys with Dsm's (2.0liter) and Mustang SVO's (2.3liter) use them on their 4 cylinder motor with great success. I just think you guys don't have much faith in your BMW motors!!!

Skeen · Post by **Skeen** » Oct 25, 2005 9:13 PM

A turbo like that would make huge hp numbers, on our cars or any. The problem is it wouldn't be useable because it wouldn't come in until high rpm.

gol10dr1 · Post by **gol10dr1** » Oct 26, 2005 1:18 AM

i got a ton of faith in these motors! especially after some of my friends make over 500 rwhp on internally stock motors. i currently run 13 psi on a to4e with a 231,000 mile stock block. soon i will drop the compression with a headgasket and run 18 psi. i got plenty of faith in these motors.

rundatrack · Post by **rundatrack** » Oct 26, 2005 10:08 AM

[QUOTE="gol10dr1"]i got a ton of faith in these motors! especially after some of my friends make over 500 rwhp on internally stock motors. i currently run 13 psi on a to4e with a 231,000 mile stock block. soon i will drop the compression with a headgasket and run 18 psi. i got plenty of faith in these motors.[/QUOTE]

Just a joke ....

....just a joke...

Any new victims on the road?

Bill in MN · Post by **Bill in MN** » Oct 26, 2005 1:40 PM

I dusted a kid with a body kit on a 4cyl. Cavalier, wing and everything. He thought he was pretty cool.

Does this count?

rundatrack · Post by **rundatrack** » Oct 26, 2005 1:48 PM

[QUOTE="Bill in MN"]I dusted a kid with a body kit on a 4cyl. Cavalier, wing and everything. He thought he was pretty cool.

Does this count?[/QUOTE]

Without a doubt....

Was he picking a fight or you just annoyed at rice...?

Monotalonawd · Post by **Monotalonawd** » Oct 26, 2005 3:04 PM

[QUOTE="gol10dr1"]i got a ton of faith in these motors! especially after some of my friends make over 500 rwhp on internally stock motors. i currently run 13 psi on a to4e with a 231,000 mile stock block. soon i will drop the compression with a headgasket and run 18 psi. i got plenty of faith in these motors.[/QUOTE]

Was that on a stock M30? Or another BMW powerplant?

I haven't had a chance to test my Holset yet but I just hope I'll get some decent boost under 4000 rpm. Especially with our displacement!

gol10dr1 · Post by **gol10dr1** » Oct 26, 2005 10:00 PM

stock m30 motor, no new victims as of late but i roasted the tires at the top of second gear the other day............dont usually break em loose at the top of second!

bahnstormer · Post by **bahnstormer** » Oct 26, 2005 11:08 PM

esp since you have 255mm 17" wheels!
not too many e28 guys have that heheheh

iXer · Post by **iXer** » Nov 04, 2005 11:53 AM

[QUOTE="Skeen"] http://boostjunky.com/gallery/turboNota ... 353?full=1

He probably doesn't have any power before 4.5k, but I bet it's significant when you get there.[/QUOTE]

I bet he is on full boost at about 3500 rpm. He uses a GT40 1.18 A/R with about 1.2bar to make 500 crank hp on a 3.5 litre M30 that is pretty stock except for the 268 degree cam (not much more than stock cam duration).

The GT40 is about the size of a Holset HX40 turbo.

I've personally helped build and tune a turbo system on an E23 728 with a stock 2.8 litre M30, with the same turbo we had full boost of 0.7 bar at about 4500 rpm with no boost control what so ever to control the wastegate (hold it shut until boost is met). When we changed to a smaller turbine housing of 0.96 A/R the boost came on 600-700 rpm lower and made a big difference.
Here is a movie of the car with the 0.96 A/R housing mounted:
http://media.savarturbo.se/bostrom/pimpride_2005.avi
You can clearly hear when the wastegate opens, as it dumps straight out. No blow-off valve was used - low boost and a sturdy turbo. There was also no intercooler mounted, this was a very low budget project but we did have aftermarket engine management (VEMS).

[Edit by iXer on [TIME]1131123295[/TIME]]

gol10dr1 · Post by **gol10dr1** » Nov 04, 2005 1:56 PM

full boost with a 1.18 a/r by 3500 RPM? my t60-1 doesnt spool up that quick and i can bet a turbo that much larger doesn't either. you got any more pics or anything on this car other than what is on the boost junky site. that is one cool machine.

T_C_D · Post by **T_C_D** » Nov 04, 2005 3:10 PM

[QUOTE="gol10dr1"]full boost with a 1.18 a/r by 3500 RPM? my t60-1 doesnt spool up that quick and i can bet a turbo that much larger doesn't either. you got any more pics or anything on this car other than what is on the boost junky site. that is one cool machine.[/QUOTE]

The discussion is kind of silly without knowing what full boost is. Is it 7psi or 20psi? I believe the GT40 in question is a ball bearing turbo .

Todd

iXer · Post by **iXer** » Nov 04, 2005 5:13 PM

[QUOTE="gol10dr1"]full boost with a 1.18 a/r by 3500 RPM? my t60-1 doesnt spool up that quick and i can bet a turbo that much larger doesn't either. you got any more pics or anything on this car other than what is on the boost junky site. that is one cool machine.[/QUOTE]
Actually he claims that in 5th gear he has full boost (1.2 bar) at 2800 rpm. But independent of load he has full boost at 3500 rpm regardless of gear.

[QUOTE="TCD"]The discussion is kind of silly without knowing what full boost is. Is it 7psi or 20psi? I believe the GT40 in question is a ball bearing turbo .[/QUOTE]
Full boost is 1.2 bar as I stated. The GT40 he uses is off a Scania diesel truck engine, just like the one we used on the E23 728. It does _not_ use ball bearings, they are over-rated.

[Edit by iXer on [TIME]1131142425[/TIME]]

iXer · Post by **iXer** » Nov 05, 2005 7:49 AM

[QUOTE="gol10dr1"]you got any more pics or anything on this car other than what is on the boost junky site. that is one cool machine.[/QUOTE]
I've talked to they guy on some swedish forums, he is Norwegian but our langauges are similar.
Here is the site about his car:
http://www.m535t.com

You can see a dyno plot on the page, he used a GT37 with a 0.99 A/R turbine housing, apparently it was too small and choked on the turbine, you can see how power drops more and more after the peak 400 hp @ 4000 rpm with 1.05 bar boost. The difference at the low end with the larger GT40 is not very noticeable but now it pulls to the rev limit.
He uses a full tubular manifold with a pulse-split design made by PPF http://www.pure-pf.com.

[Edit by iXer on [TIME]1131195068[/TIME]]

T_C_D · Post by **T_C_D** » Nov 05, 2005 8:01 AM

[QUOTE="iXer"]I've talked to they guy on some swedish forums, he is Norwegian but our langauges are similar.
Here is the site about his car:
http://www.m535t.com

You can see a dyno plot on the page, he used a GT37 with a 0.99 A/R turbine housing, apparently it was too small and choked on the turbine, you can see how power drops more and more after the peak 400 hp @ 4000 rpm with 1.05 bar boost. The difference at the low end with the larger GT40 is not very noticeable but now it pulls to the rev limit.
He uses a full tubular manifold with a pulse-split design made by PPF http://www.pure-pf.com.

[Edit by iXer on [TIME]1131195068[/TIME]][/QUOTE]

That curve with the GT37 is very similar to my curve with the GT35R wheel in my T61. Andrew, your 60 trim wheel spools 500-600rpm sooner than both.
Todd

[Edit by TCD on [TIME]1131195854[/TIME]]

gol10dr1 · Post by **gol10dr1** » Nov 05, 2005 12:25 PM

bout right, my turbo is a touch smaller.

russc · Post by **russc** » Nov 22, 2005 3:01 AM

Well,
that dyno says that peak boost was @4k. It might have spiked a little higher from there, but I doubt it. Results on the street would only change from that dyno if the car is on a hill. That puts more load on the car and will allow it to spool just a little sooner.

RussC

MyE28.com

MyE28.com

So who's gonna use this turbo?