Mutt makes very little black smoke and I expect he'll make even less with the big turbo. With the current turbo I get a little until the turbo gets up to speed, then no visible smoke. With the big turbo I expect a bit more early in the run (it'll take more heat to spool the big turbo up) but then even less smoke once the pressure is up.

The main reason for the big turbo is that the exhaust gas temperature (EGT) is way too high at the end of the run, nearly 1300 *F. The big compressor will pump more air and thereby lower EGY. It's also support more HP so you sort of ratchet up the power output.

Dan

Have not seen any external videos of yours running, There are only a couple I can find showing a 617 superpump.... I believe one is an M and one is the MW.

MW pump...
https://www.youtube.com/watch?v=xa4AHNfktEk
https://www.youtube.com/watch?v=pQ-TdqUvI7E

M pump
https://www.youtube.com/watch?v=bhHnADr70w8

Both smoke bad.

But... there are several om606 builds that seem to run without a lot of smoke...
https://www.youtube.com/watch?v=ziW3TnKKnKg
https://www.youtube.com/watch?v=R9ihDKq9D28

But some with a lot...
https://www.youtube.com/watch?v=3PLEK3z8qK8

etc...

A lot of smoke may be cool to some, but not for a good daily driver. Yours is track only. so not an issue. I'm actively watching this build https://www.youtube.com/channel/UCPOWd3Js799wjPJDDd2TEPw om606 in a w123 with compound turbos. will be interesting to see final.

black smoke does not mean power lol. it's unburnt fuel.. with the right intercooler and turbo and detuned alda, you shouldn't be making much smoke. if you're pushing a lot of power 300+, you're gonna get smoke under heavy throttle either way..

__________________
Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k

Mine is an "M" based pump. I thought I had posted the videos but I don't have one taken from outside on the exhaust side. When we finally get a track again I'll see if I can jin up a camera mount and take that vid - that would be interesting.

Interesting smoke note: When I first got the SuperPump on I made the first run with the boost at 15ish psi and it smoked like a bandit all the way down the track as I expected it would. When I cranked the boost back up to 20ish it cleaned right up and went a lot faster. I had warned our track announcer that the first run would be smokey and that subsequent runs would clean up - he thought I was a magician when that happened. So another bit of proof that when the engine gets efficient the smoke goes away.

Dan

Black smoke usually happens because people deliberately tune their engines to make it...big laggy turbos can cause smoke before spool up as the ALDA either isn't fitted/adjusted/ designed for such a wide variation in fuel and boost combinations.

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

I have an original super-pump from MYNA in my '84 wagon with a small blackstone IC, enlarged PC's, altered air intake, process coated exhaust manifolds and I've removed the rear muffler. Stock turbo. I believe my HP to be around 175, and my 0-60 time is right at 9 seconds. It becomes far more complex to get more HP than Dan's or mine in a 617-95X than a 603/606.

https://www.youtube.com/watch?v=9mt7AUAnTE4

You could either rent some dyno time and get a HP number or take it to the drag strip. If you have a set of drag strip numbers there are on-line calculators that will back calculate HP and they're reputed to be pretty accurate. Besides, a day at the track is kind of fun!

Dan

The online 0-60 calculator says around 170-175HP based on weight of the car and time, also you put it in your car and make sure it does not move while doing the run. I don't have the time or inkling to get more accurate than that until I install a better turbo and IC set-up.

And my guess would be that that's about right. Just trying to lure you to the local track! And I'm a big supporter of dynos.

Dan

Yup! If you're easy on the pedal it won't smoke pre-boost.

Those videos are typically of people mashing the pedal to get boost up fast.

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$60 OM617 Blank Exhaust Flanges
$110 OM606 Blank Exhaust Flanges
No merc at the moment