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  #1  
Old 03-20-2016, 05:20 PM
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300SDL Project

I thought I would start a thread to chronicle my adventures with upgrading my 87 300SDL.

Originally, I was planning on following the works of GSXR and Babymog, i.e. full load, 55 trim turbo, etc. I was hesitant to get a new pump for a few reasons- price, more upgrades that required custom work, breaking transmissions, etc.

I ran the 55 trim turbo from a 91 SDL for about a year, year and a half maybe. It was a decent upgrade over the KKK, even at stock fuel settings.

I then got my hands on a w140 manifold, which I found out did not work on my car, because the turbo exhaust housing would not clear the spring perch in my engine bay by about 1 inch! It was very frustrating. I later found out that my motor mount is completely collapsed, so soon I will replace that and try the manifold again.

In the meantime, I bought a new Holset HX30 and put that in my car with the trap ox manifold. I can't say it would work in a 124, but it might since most of the turbo is below the trap ox pipe. Anyway, this was an even better upgrade over the 55 trim. The turbine housing itself is not much larger than the T3, but the wheel is, and the outlet is 2.75 inch. I am a bit worried that I might need something more, but an HX35 would be overkill for what I need, I think... The HX30 should be good for at least 25 psi before it gets hot. Even right now, my intake manifold is cold to the touch when I get home, whereas it used to get pretty hot with the stock turbo.

I was then going to just stick with a full load IP adjustment and hope for a good 180 hp...figuring the HX30 would get me a few extra since it is a more efficient design.

Just recently I ended up getting myself a 6mm pump from Finland by Herlevi. I am hoping to get it put in next week. The specs are 90cc and a governor set to 6000 rpm. They also said it pulls around 50cc with no boost. The HX30 is set at 18 psi right now, I may need to up that to 22 or so, but we'll see.

Lastly, I do have an intercooler ready to go as well. It is relatively small, 27x5.5x2.5, and fits very easily in my huge US spec bumper. If I had known better, I probably could have gotten a 7" tall IC vs the 5.5, but I don't know that I'll need that much for what I am after.

Soooo, with all that, I am hoping to pull off around 210-220 hp and maybe 300 ft lbs at the crank. Much of my inspiration came from GSXR in this thread: OM603 semi-super pump testing, fitted with Bosch 6.0mm elements

He found the Bosch specs for the 603 being .46 cc per kw stock. While doing some research on STD I took note of all the 603 dyno results that people had, and it seems that everyone is continuing about a .49 cc per kw ratio, so in theory, I could pull off about 240 hp, but I doubt I will get close to that due to my low budget build (not planning on exhaust at the moment, might keep trap ox manifold if probelms with w140, etc.) Also, the 6mm are pretty close to maxxed out at 90cc, so I have long duration to deal with at high rpm. On a side note, Herlevi told me they could manage 115cc with 6mm elements if they worked on the delivery valves, but I was not really interested in going beyond 90.

Vacation begins tomorrow, and I am planning on getting the IP put in over the next few days. Since I won't have time to get the IC set up yet, I may just run the IP with the ALDA unplugged, which would limit me to 50cc, so basically stock! I am interested to see how much better a 6mm 50cc pump will run set at 6000 rpm

I'll also take lots of pictures. I did not get any T3 vs HX30 pics before I put it in, but I need to take the turbo off to reclock it, so I'll get some then.

Does anyone know what the thread on the test port in the exhaust manifold is? Need an EGT. I thought it was m10x1 but found out that isn't the case today...
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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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Old 03-21-2016, 07:36 PM
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Here are some pictures. Let me say that everything I am doing is pretty low quality and not good looking! But it is functional....

I got lucky today and got called for a job interview tomorrow, so unfortunately I won't be able to start getting the pump in until next week.

Pictures:
1. Intercooler hiding in the bumper
2. Current HX30 setup....basically stock with a lot of adapters. (Ps, with air filter set up you can barely hear the turbo, even though the Holsets are known to whistle!)
3. Vehicle in question
4. Manifold. The intake tube is 2.25 in, which is how wide the intake is...might need to modify this again in the future
5. Pump! I believe they offer the side actuator / alda control on higher cc pumps (as shown on website)
-Side note, I don't know what the pump was off of. The serial plate is worn down so no color, but the code ends in RS171. May be from an NA, or possibly a later model GD
Attached Thumbnails
300SDL Project-005.jpg   300SDL Project-004.jpg   300SDL Project-003.jpg   300SDL Project-002.jpg   300SDL Project-001.jpg  

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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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Old 03-21-2016, 08:30 PM
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tomnic had posted some data on pumps and cams a while back, you might ask him if you can find him.

Why did you decide to go with herlevi? I had not heard of them until now (not spending any time at super turbo diesel). Do they make their own elements or ?? Was your pump an exchange or just a straight purchase?

Always fun to see someone else playing with these engines.
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Old 03-21-2016, 09:28 PM
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I came across Herlevi in a google search actually, and then did some research on them. The price was right- I was going to get a dieselmeken but was still a bit too much after core, shipping, and import tax. This basically fit my bill; I got a new pump (well, rebuilt). They make their own elements, but only in 8mm. The 6mm I got are Bosch, not sure what the 7mm are.
I still browse STD but what I am doing is basically a joke compared to what a lot of those people are working on, so I dint get a lot of reaponse
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Old 04-05-2016, 03:20 PM
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I got my pump in finally....it went pretty well, except that the rack became stuck closed during shipping, so I spent about a day cranking away, wondering why no fuel was coming out.

Anyway, builder said to install at 15 BTDC. I put it in around there, maybe 16. Starts a little rough but once warm, idles nicely. Runs VERY quietly in low-mid rpms. I was driving it with the alda not hooked up to boost (until I get my IC all done) and initial impression was that it was as fast as a stock 603. Unfortunately, after a day I decided something wasn't right as it seemed the engine was working against itself? Perhaps my timing is still off? When I took my old pump off, it was indicating 20 ATDC and despite a somewhat weak top end, it started and ran fine and got good mpg. I did hook up the ALDA and while fueling did enrich, it still seemed delayed and not much faster than stock.

I'll go check my chain timing today, but does this sound like it is too retarded on the timing still? Would the car run if it was supposed to be at 15 ATDC? I verified with the builder and others who have used this company that it is supposed to be BTDC. I may try 20 and see if that makes any difference.
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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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Old 04-05-2016, 05:39 PM
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Well, turns out I put it in around 8 btdc, so that would explain the low power. I'll have an update soon on how it runs...waiting on a new fan since I broke mine
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Old 04-16-2018, 01:58 AM
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Sorry to dig up an old thread, but I was getting thinking about putting an hx30 in place of the factory garrett turbo as the turbine housing developed a decent size hole.

was curious as to what adapters you needed to mount it. How does it fit on the trap ox style manifold? Does it bolt up fairly well?
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Old 04-16-2018, 09:31 AM
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All I had to do was make a small pipe to link the exhaust to the turbo and then basically clock it and get two silicone tubes, one for the air filer and one for the outlet to intake. I ran mine both without and with an intercooler. The compressor housing was touching the engine bay just slightly which resulted in a nasty vibration when turning, so I bent a section of the body to give clearance. I later found out my engine mount had collapsed so that probably would have fixed it, it needed that extra inch of height to clear. Currently I am running a bigger turbo and new manifold. I still have the HX30 and adapter...
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1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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Old 04-16-2018, 08:25 PM
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Quote:
Originally Posted by awsrock View Post
All I had to do was make a small pipe to link the exhaust to the turbo and then basically clock it and get two silicone tubes, one for the air filer and one for the outlet to intake. I ran mine both without and with an intercooler. The compressor housing was touching the engine bay just slightly which resulted in a nasty vibration when turning, so I bent a section of the body to give clearance. I later found out my engine mount had collapsed so that probably would have fixed it, it needed that extra inch of height to clear. Currently I am running a bigger turbo and new manifold. I still have the HX30 and adapter...
Sweet. Seems pretty straightforward! I'll probably go ahead and go that route then. You still have the adapter for the exhaust? Would you sell the turbo and adapter? Thanks for the help!
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1986 300 SDL - HX30, Stock Pump, #314 Nozzles - Daily Driver/ Project

Last edited by Hoppert; 04-16-2018 at 08:47 PM.
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Old 04-16-2018, 09:11 PM
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Yes, I would sell them. I am about to go on a work road trip so I'll try to pm you soon but it might not be until Friday. I want to send you some links to oil feed hoses, etc.
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Dan
1987 300SDL s200g, Herlevi pump, Elbe manifold, 722.6 collecting dust - 185k
Past: 1987 300D - 264k
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Old 04-16-2018, 09:47 PM
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Quote:
Originally Posted by awsrock View Post
Yes, I would sell them. I am about to go on a work road trip so I'll try to pm you soon but it might not be until Friday. I want to send you some links to oil feed hoses, etc.
Perfect. Looking forward to hearing from you! Some links to oil feed lines would be very helpful!

My stock garrett turbo developed a hole in the turbine housing so I figured id give the hx30 a try, since a pump with larger elements is out of my budget at the moment.
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