Hallo Schorsch,
dann halte mich mal auf dem laufenden, wie sich der kleinere Lader macht.
Grüße, Tom (inzsichen fast gewöhnt an ca. 2 Sekunden Hochlaufzeit)

Halli-Hallo,
die lange Hochlaufzeit des Garrett e28 Laders bei Motordrehzahlen <2000touren kommt vom großen Laufzeug dieses Laders.
NaJa, bei 3000Touren ist meiner innerhalb von 0,5Sek von Leerlauf 0,3Bar auf Max. Ladedruck von 1,6Bar
Ich hoffe das der E34 Lader schon bei 1500 Touren gut hochläuft, im Gegensatz zu 1800Touren jetzt.
Ob der kleine Lader die 1,6Bar auch bei hohen Motordrehzahlen aushält....wird sich zeigen.

Der Lader vom E34 ist viel kleiner.
Das Gehäuse vom Turbinenrad ist auch nicht mehr geteilt.
Man hat das gemacht um das relativ große Turbinenrad schneller anlaufen zu lassen, da sich nur je 3Zyl einen kleineren Schlitz teilen um ihre Energie auf das Turbinenrad zu drücken.
Der E34 Lader hat nur einen Schlitz, deshalb ist ist die Einzelgeschwindigkeit jedes Gasstosses beim Auslassventilöffnung kleiner als beim zweiflutigen Laders.
Man kann sich das mit einem modernen VTG-Lader (verstellbare Leitschaufeln im Zulauf zum Turbinenrad, die den Querschnitt regeln)vorstellen, dessen VTG-Verstellung zwei Stufen hat.
So genug geschwafelt...
Der E34 Lader (Hersteller weiss ich nicht...steht BMW drauf?)hat um ca. 5mm kleinere Turbinen und Verdichterräder, deshalb spricht er schon bei kleinerer abgasmasse=Drehzahlen an.
Der Abgassammler vom E34 hat auch einen schmäleren Flansch ist aber noch zweifluig aufgebaut im gegensatz zum Turbinengehäuse.
6 Bilder kommen die den Vergleich E28 zum E34 Lader zeigen.
Gruß Schorsch

<IMG src="http://img157.imageshack.us/img157/8779/e28finny9.jpg" alt="http://img157.imageshack.us/img157/8779/e28finny9.jpg[/link]

<IMG src="http://img148.imageshack.us/img148/7965/e34finup8.jpg" alt="http://img148.imageshack.us/img148/7965/e34finup8.jpg[/link]

<IMG src="http://img88.imageshack.us/img88/3079/e28turwg4.jpg" alt="http://img88.imageshack.us/img88/3079/e28turwg4.jpg[/link]

<IMG src="http://img167.imageshack.us/img167/9167/e34turri3.jpg" alt="http://img167.imageshack.us/img167/9167/e34turri3.jpg[/link]

<IMG src="http://img88.imageshack.us/img88/5973/e28verdvd0.jpg" alt="http://img88.imageshack.us/img88/5973/e28verdvd0.jpg[/link]

<IMG src="http://img166.imageshack.us/img166/4337/e34verdyn0.jpg" alt="http://img166.imageshack.us/img166/4337/e34verdyn0.jpg[/link]

Hallo,
meine Antwort (jetzt der erste Beitrag zu dem Thema) bezieht sich auf einen alten Fred. Einfach in dem ersten Post hier oben auf:
"Als Antwort auf: BMW e28 Turbo Question geschrieben von Jim Morrison am
09.Oktober 2006 22:45:30"
klicken, dann kommt man zu dem alten Thema. Da steht auch welche Vorteile der KKK Lader haben soll, nämlich das er schon viel früher (1500 rpm anstatt 2500 rpm) richtig druck machen soll.

Gruß Clemens, der der den KKK Lader nur dann drin lässt, wenn er trotz früherem Ansprechverhalten den selben kurzfristigen und süchtigmachenden
"Turbo-Bums" erzeugen kann.

PS: Ist an dem KKK irgendwas besser als an dem meist montierten Garrett?

Halli-Hallo,
Mmm...ich kenn den KKK nicht nur den alten zweiflutigen Garrett vom E28.
Der spricht wegen seiner großen Turbine halt später an wie sein Nachfolgen im E34.
Wie sich der KKK verhält weiss ich nicht.
Gruß Schorsch nächses Jahr mit "kleinen" E34 Lader im E28...

Hallo Schorsch,

dann halte mich mal auf dem laufenden, wie sich der kleinere Lader macht.

Grüße, Tom (inzsichen fast gewöhnt an ca. 2 Sekunden Hochlaufzeit)

PS: Ist an dem KKK irgendwas besser als an dem meist montierten Garrett?

Halli-Hallo,
Mmm...ich kenn den KKK nicht nur den alten zweiflutigen Garrett vom E28.
Der spricht wegen seiner großen Turbine halt später an wie sein Nachfolgen im E34.
Wie sich der KKK verhält weiss ich nicht.
Gruß Schorsch nächses Jahr mit "kleinen" E34 Lader im E28...

Hallo,
ich hab mir gerade auch so einen Torbo zugelegegt, Informationen folgen.
Gruß Clemens

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ih=009&sspagename=STRK%3AMEWN%3AIT...

WOW! 100,- Euro gibt's für 'nen Turbo? Ich glaub', ich räum mal den Dachboden auf... <img src=http://bilder.parsimony.net/smilies/smile.gif alt=smile>

Grüße, Tom

PS: Ist an dem KKK irgendwas besser als an dem meist montierten Garrett?

Hallo,
ich hab mir gerade auch so einen Torbo zugelegegt, Informationen folgen.
Gruß Clemens

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&ih=009&sspagename=STRK%3AMEWN%3AIT...

Hallo,
ich hab mir gerade auch so einen Torbo zugelegegt, Informationen folgen.

Gruß Clemens

Hi Tom,

there is the KKK-logo and the number 5324 101 50 88 on the charger housing, the body of the turbine wears the numer 5324 101 70 79. Hope you can do anything with that. My neighbor´s e28 has an Garret turbo.
The preowner showed me some older photos of the car where there was a spoiler on the trunk deck and silver stripes stuck with a small "HARTGE" lettering on both sides of the car. I was looking for more infos today but could find anything about
an Hartge 524td. If you know more about the charger pleas tell me!

Regards, Jim

Hi Jim,
its amazing for to see other people optimizing their e28 524td. I have already considered to replace the stock charger on my e28 by the smaller one of an e34 524td to get that quicker throttle response and a more dynamic torque rise without that characteristic plume of smoke (also seen on almost all comtemporary diesel passenger cars). Do you have any perormance data of your car to see what the preowner of the car intedented with this custom turbocharger? After all its very unlikely he grabbed the first one he found at an scrapyard after his original charger failed.
My aftercooler-equipped 524td has put out 164HP and 329Nm on a dyno-run some months ago, currently that seems to be little more thank to the lower ambient temperature in autumnal south-east-bavaria <img src=http://bilder.parsimony.net/smilies/zwinker.gif alt=zwinker>.
[<IMG src="http://www.pixel-pics.de/upload/1147643078.jpg" alt="http://www.pixel-pics.de/upload/1147643078.jpg[/link]]
But I also wonder if a smaller turbine would be able to sustain the much higher maximum boost pressure needed for a comparable engine performance at higher engine speeds.
Do you see any inscriptions or numbers stenciled on the housing of the charger?
Greets, Tom

Hi Bimmerfriend,
since I test-drove an BMW 524td of one of the gyus in the neighborhood some months
ago I was looking for one. Now I have bought a ´85 model from an elderly woman in
quite good condition. But what makes me wondering are the different performance characteristics of the two engines which presumably come from the different types of turbochargers. My bimmer has an small turbo with some external-looking wastegate:
<IMG src="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg" alt="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg[/link]
<IMG src="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg" alt="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg[/link]
The one of my neighbor is much bigger but with an standard wastegate:
<IMG src="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg" alt="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg[/link]
My diesel develops torque at already 1500rpm while the other puts out sufficient power not until 2500rpm. Anyway, my engine has an much quicker throttle-response.
So how about this differences? They are both 85-models. Had BMW switched to the other chargers during time of production? I have seen an engine of an 91 model 524td e34, too. It has an EGR but no external wastegate.
Regards, Jim

Hi Jim,

its amazing for to see other people optimizing their e28 524td. I have already considered to replace the stock charger on my e28 by the smaller one of an e34 524td to get that quicker throttle response and a more dynamic torque rise without that characteristic plume of smoke (also seen on almost all comtemporary diesel passenger cars). Do you have any perormance data of your car to see what the preowner of the car intedented with this custom turbocharger? After all its very unlikely he grabbed the first one he found at an scrapyard after his original charger failed.
My aftercooler-equipped 524td has put out 164HP and 329Nm on a dyno-run some months ago, currently that seems to be little more thank to the lower ambient temperature in autumnal south-east-bavaria <img src=http://bilder.parsimony.net/smilies/zwinker.gif alt=zwinker>.

[<IMG src="http://www.pixel-pics.de/upload/1147643078.jpg" alt="http://www.pixel-pics.de/upload/1147643078.jpg[/link]]

But I also wonder if a smaller turbine would be able to sustain the much higher maximum boost pressure needed for a comparable engine performance at higher engine speeds.
Do you see any inscriptions or numbers stenciled on the housing of the charger?

Greets, Tom

Hi Bimmerfriend,
since I test-drove an BMW 524td of one of the gyus in the neighborhood some months
ago I was looking for one. Now I have bought a ´85 model from an elderly woman in
quite good condition. But what makes me wondering are the different performance characteristics of the two engines which presumably come from the different types of turbochargers. My bimmer has an small turbo with some external-looking wastegate:
<IMG src="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg" alt="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg[/link]
<IMG src="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg" alt="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg[/link]
The one of my neighbor is much bigger but with an standard wastegate:
<IMG src="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg" alt="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg[/link]
My diesel develops torque at already 1500rpm while the other puts out sufficient power not until 2500rpm. Anyway, my engine has an much quicker throttle-response.
So how about this differences? They are both 85-models. Had BMW switched to the other chargers during time of production? I have seen an engine of an 91 model 524td e34, too. It has an EGR but no external wastegate.
Regards, Jim

So how does the old bimmer perform with that midget blower bolted to the engine?
Must feel like hell breakin loose in the lower rpms, but does it have enough airflow above 3000 1/min ? What about fuel mileage, do you note any difference in comparsion with a stock 524td?

Regards,

Ed

Hi Bimmerfriend,
since I test-drove an BMW 524td of one of the gyus in the neighborhood some months
ago I was looking for one. Now I have bought a ´85 model from an elderly woman in
quite good condition. But what makes me wondering are the different performance characteristics of the two engines which presumably come from the different types of turbochargers. My bimmer has an small turbo with some external-looking wastegate:
<IMG src="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg" alt="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg[/link]
<IMG src="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg" alt="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg[/link]
The one of my neighbor is much bigger but with an standard wastegate:
<IMG src="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg" alt="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg[/link]
My diesel develops torque at already 1500rpm while the other puts out sufficient power not until 2500rpm. Anyway, my engine has an much quicker throttle-response.
So how about this differences? They are both 85-models. Had BMW switched to the other chargers during time of production? I have seen an engine of an 91 model 524td e34, too. It has an EGR but no external wastegate.
Regards, Jim

I'm pretty sure somewhere in it's life your car was fitted with a non-original turbo. Could be the PO wanted more performance (although I don't see an elderly woman tune a diesel <img src=http://bilder.parsimony.net/smilies/zwinker.gif alt=zwinker>) or she bought it this way herself, if there were other owners before her.

Anyway, BMW didn't change the Turbo setup during production, the turbo on the bottom pic is original, yours is not. You might want to register over at www.524td.com if you want more info.

since I test-drove an BMW 524td of one of the gyus in the neighborhood some months
ago I was looking for one. Now I have bought a ´85 model from an elderly woman in
quite good condition. But what makes me wondering are the different performance characteristics of the two engines which presumably come from the different types of turbochargers. My bimmer has an small turbo with some external-looking wastegate:

<IMG src="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg" alt="http://img46.imageshack.us/img46/6482/ssa50187nx3.jpg[/link]

<IMG src="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg" alt="http://img175.imageshack.us/img175/679/ssa50188hf2.jpg[/link]

The one of my neighbor is much bigger but with an standard wastegate:

<IMG src="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg" alt="http://img46.imageshack.us/img46/6393/ssa50189cq8.jpg[/link]

My diesel develops torque at already 1500rpm while the other puts out sufficient power not until 2500rpm. Anyway, my engine has an much quicker throttle-response.
So how about this differences? They are both 85-models. Had BMW switched to the other chargers during time of production? I have seen an engine of an 91 model 524td e34, too. It has an EGR but no external wastegate.

Regards, Jim