Author Topic: super charging a diesel (Read 5920 times)

MouseGTD · « **on:** January 21, 2009, 01:55:44 pm »

pro's? cons? problems with doing it?

i've seen a 1.4d seat engine with a G40 charger on it in a mk3 polo on the net before but the post was in German so i had no way of finding out any thing about it. i know there was a mazda diesel with a super charger on from the factory, but thats all i've heard of. is there a reason no one puts chargers on diesels? surely it would make a diesel more drivable with instant power through out the rev range?

arb · « **Reply #1 on:** January 21, 2009, 02:14:20 pm »

Biggest down side, you burn about 20% more fuel to creat the HP required to pump the air...

With turbocharging, you get this HP for almost free from the wasted energy in the exhaust, so that 20% is an increase in HP w/o paying much for it.

truckinwagen · « **Reply #2 on:** January 21, 2009, 02:24:16 pm »

a supercharger will give you boost right off the line without lag like a turbo, but as said before, the supercharger takes power to spin, which makes your MPG go down.

I am currently working on a twincharged setup with a K24 blowing into a G60 supercharger.

96jetta · « **Reply #3 on:** January 21, 2009, 07:14:26 pm »

Quote from: "truckinwagen"

a supercharger will give you boost right off the line without lag like a turbo, but as said before, the supercharger takes power to spin, which makes your MPG go down.

I am currently working on a twincharged setup with a K24 blowing into a G60 supercharger.

thats gonna be nuts :twisted: how much boost is expected out of that setup

truckinwagen · « **Reply #4 on:** January 21, 2009, 07:31:35 pm »

well 12 or so PSI from the G60, but when the turbo kicks in the supercharger will compress the compressed air further(like a compound turbo setup) and the turbo will probably be pushing 20-25PSI before the supercharger, so with both together who knows?

lets just say lots!

88jetta350 · « **Reply #5 on:** January 21, 2009, 11:38:18 pm »

Please don't use a G-Lader.

That would be taking the most reliable VW engine ever built and putting the most unreliable supercharger in the world on it.

truckinwagen · « **Reply #6 on:** January 22, 2009, 12:00:45 am »

the G60 is reliable enough, as long as you keep in good repair.
the scroll charger(G-Lader) is very efficient and is capable of lots of boost for its power draw.

that and I found one for $100 that should be repairable, and will know as soon as it arrives in the mail.

I have every intention of keeping the charger in good repair and will have a very large intercooler between the turbo and the supercharger to keep it from being damaged by the heat generated by the turbo.

Aki-76 · « **Reply #7 on:** January 22, 2009, 01:39:18 am »

my old projekt , vento´s aaz motor with eaton M45 and holset/switzer hyprid turbo

http://www.ffp.fi/bb/viewtopic.php?t=87801

max boost road use is 2.2 bar and that boost wheelpower is 220 hp,2.6bar boost give 200KW wheel power ( max boost what i try is 2.8bar) :twisted:

clbanman · « **Reply #8 on:** January 22, 2009, 03:17:21 am »

Translation not complete, but at least you can get an idea:
http://translate.google.com/translate?prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fwww.ffp.fi%2Fbb%2Fviewtopic.php%3Ft%3D87801&sl=fi&tl=en&history_state0=&swap=1

Christian_Finland · « **Reply #9 on:** January 22, 2009, 07:40:28 am »

This is the most insane car that I've ever been in. Rolling start from 80km/h to 200km/h was insane. That was with about 2.6 bar boost. And the sounds of that thing, first the whine of the eaton and when the huge turbo kicked in at about 3500-4000 rpm (redline ~6500rpm) the whistle was so loud.

I'll newer forget that ride.

TedV · « **Reply #10 on:** January 22, 2009, 09:03:49 am »

Quote from: "truckinwagen"

the G60 is reliable enough, as long as you keep in good repair.
the scroll charger(G-Lader) is very efficient and is capable of lots of boost for its power draw.

that and I found one for $100 that should be repairable, and will know as soon as it arrives in the mail.

I have every intention of keeping the charger in good repair and will have a very large intercooler between the turbo and the supercharger to keep it from being damaged by the heat generated by the turbo.

I have a friend who autocrossed a G60 Scirocco. Had them profesionaly rebuilt, and he went thru them faster than brake pads. he had zero problems after switching to a Lysholm. Please reconcider, your bank account and sanity will thank you.

truckinwagen · « **Reply #11 on:** January 22, 2009, 09:28:22 am »

it seems that the hatred of the g60 i sonly here in the states, there are lots of guys in europe running them and loving it!

just because a shop does your work in no way means that it is done right(not to bash any shops here ) the only way to know it is right for sure is to do it yourself, and that way you have a real understanding of how everything works which is a big help in tuning.

I will rebuild the charger myself and make my own decisions about reliability.

zukgod1 · « **Reply #12 on:** January 22, 2009, 09:37:29 am »

Now THAT was cool!!!!!!!!!!!!!!!!!!!!

Aki-76 · « **Reply #13 on:** January 22, 2009, 09:49:30 am »

zukgod 1 : did you mean that my car ( vento ) ..
Now i build same car whit two turbos.I hope break 300hp limits this motor.

http://s434.photobucket.com/albums/qq68/Aki-76/pakosarjan%20sovittelua/

truckinwagen · « **Reply #14 on:** January 22, 2009, 10:00:08 am »

Aki, your car is definitely very cool, it is actually the reason I decided to try this.

I saw reference to your motor in the Jetta 200 project thread and decided to try it myself, but with some tips from the big detroit two stroke diesels I work with in the summer(compounding setup-turbo into supercharger with no bypass)

good luck on 300HP!

Author Topic: super charging a diesel (Read 5920 times)

arb

96jetta

88jetta350

Aki-76

Aki-76