picking up a 87 300d w124 white smoke - Page 4 - PeachParts Mercedes-Benz Forum

sixto · #46 08-21-2011, 12:02 AM

EGR and ARV deletion aren't necessarily performance modifications. I doubt they'll net you more than a tenth of a second if anything. You'll find a groove where you get responses that make sense to you. You should focus on this forum and the archives until the basics are sorted then move to the performance forum when the next step involves messing with the full load stop and names like Myna and Holset.

At this point my Bowden cable is set so loose that the transmission shifts at 3500 rpm at WOT. ALDA is untouched. 0-60 feels like 10 seconds to me after driving the Caravan and Suburban TD which means it's probably 15 seconds

Sixto
87 300D

epowers777 · #47 08-21-2011, 12:26 AM

Sixto since its a garret can you give me the number that's on it so I can look for a rebuild kit. Im at work really bored :-)

sixto · #48 08-21-2011, 01:07 AM

Member babymog (Jeff) can confirm but I believe the tag will say TBO359 or TBO360.

I'm glad you don't work for me.

Sixto
87 300D

epowers777 · #49 08-21-2011, 02:10 AM

http://www.superturbodiesel.com/std/showthread.php?tid=2516

Good info

Also I work on locomotives some days are crazy some are easy!! One cylinder is the size of a benz engine they have 16.

winmutt · #50 08-21-2011, 08:55 AM

Quote:

Originally Posted by gsxr

There's nothing to prove. Power is made by fuel, not air. Stuff more air into the engine and you'll get... zero power gain. Note that the Finns don't just add larger turbos.

Ah this is not entirely true. In general principal, yes more air does not mean power gained. However a more efficient turbo will provide cooler air and that does make for more power. It will also create a wider power band, which to me is more important than a peaky one.

gsxr · #51 08-21-2011, 10:30 AM

Quote:

Originally Posted by winmutt

Ah this is not entirely true. In general principal, yes more air does not mean power gained. However a more efficient turbo will provide cooler air and that does make for more power. It will also create a wider power band, which to me is more important than a peaky one.

No. Cooler air means that more air can fit in the cylinder. It DOES NOT MAKE MORE POWER. Fuel makes power.

Reminds me of the guy years ago who built the prettiest intercooler you ever saw for a W123 and swore the car was faster, yet he got very quiet (i.e., stopped posting) when people asked for performance data (0-60 times via stopwatch, etc). He did nothing to turn up the fuel, all he got was lower IAT's, EGT's, and some bling under the hood for his couple hundred hours labor. It's somewhere on this forum, wonder if the photos are still there.

gsxr · #52 08-21-2011, 10:31 AM

Quote:

Originally Posted by sixto

At this point my Bowden cable is set so loose that the transmission shifts at 3500 rpm at WOT. ALDA is untouched. 0-60 feels like 10 seconds to me after driving the Caravan and Suburban TD which means it's probably 15 seconds

Uh, Sixto, do you mean 3500 at 90% throttle? At WOT the kickdown engages and will override the Bowden adjustment.

winmutt · #53 08-21-2011, 02:11 PM

Quote:

Originally Posted by gsxr

It DOES NOT MAKE MORE POWER. Fuel makes power.

Combustion makes power, not fuel OR air. Cold air allows for a faster burning flame front. Hot air retards it.

I have a feeling we can go on for days about this. Lets agree to disagree.

epowers777 · #54 08-21-2011, 04:48 PM

Im hoping to intercool her after she is running good. Lower egts. Are good were I live lots of mountain climbing.

Turbo kit....I emailed a few people waiting for replies ....do you know were I can get a turbo rebuild?

epowers777 · #55 08-22-2011, 07:09 PM

Ok I found a turbo kit for 90 and its a complete kit. How hard are they too rebuilds

Also I need a pic of the ccv hose that goes into the intake please.

sixto · #56 08-22-2011, 07:37 PM

A 1990 300D 2.5 has a Garrett T25, not a T30 as in your car.

Sixto
87 300D

epowers777 · #57 08-22-2011, 07:50 PM

Not sure what you mentioned sixto??

Sixto do you have a pic of your engine the crankcase hose. I noticed the crankcase hose goes straight into the intake and there's no valve or oil catcher. Maybe ifs sucking oil? Just a thought!!

Ho hard is it to rebuild a turbo? Is there a link I can study?

epowers777 · #58 08-22-2011, 07:51 PM

Lol ok I get it I found the kit for 90 bucks I e mailed a turbo site.

sixto · #59 08-22-2011, 09:44 PM

I thought you meant you found a rebuild kit for a 90 300D

At most you can change seals and bearings with that kit. Properly rebuilding a turbo includes balancing the rotating assembly which isn't something you can do yourself unless you're Brian Carlton. But new seals and bearings might be all you need. If so, mark the compressor, bearing and turbine housings so you can reassemble them in the same orientation. Then mark the impellers relative to the shaft before pulling it apart and put it back together in the same orientation. There isn't much more to it.

Sixto
87 300D

sixto · #60 08-22-2011, 09:46 PM

The hose goes directly from the valve cover to the turbo air intake hose. No oil collector.

Sixto
87 300D