The Baddest Mb Diesel I've Ever Seen!!!! - Page 3 - PeachParts Mercedes-Benz Forum

RUN-EM · #31 05-15-2008, 07:36 PM

And some of those guys swear by having the stock injectors Extrude Hone modified. Seems to aid the diesel flow thru the injector without going to another pump (stops some of the injector overflow thru the rubber return lines). Anybody tried this on the Benz injectors?

Regards

Run-Em

bgkast · #32 05-15-2008, 08:35 PM

No, but I am in contact with the company and will be having a set done if I can sell my laptop to get some funds. They said that most of the injectors they do are from DI engines, but they have had some success with IDI engine injectors.

Cervan · #33 05-24-2008, 06:13 AM

Hmmm.. i have a spare injection pump laying around here... maybie i should play around with the torque plate abit.. and get metal added to the cam so it injects more fuel (meaning ill have to shorten the elements but its all possible)

bgkast · #34 05-24-2008, 01:56 PM

You should cut your delivery valves: http://www.superturbodiesel.com/std/viewtopic.php?f=9&t=86

Cervan · #35 05-26-2008, 10:23 AM

A metal turning lathe would be best for that.. wouldnt have to worry about knicking it up and you will have a smooth finish afterwards. Oh and BTW, i would KILL for that idle

What im thinking now is why not cut some slits in the collars? that way more fuel can get past, but you still have some collar left.

Monomer · #36 05-27-2008, 12:03 AM

Quote:

Originally Posted by Cervan

A metal turning lathe would be best for that.. wouldnt have to worry about knicking it up and you will have a smooth finish afterwards. Oh and BTW, i would KILL for that idle

What im thinking now is why not cut some slits in the collars? that way more fuel can get past, but you still have some collar left.

depends on the hardness of the metal.

Cervan · #37 05-27-2008, 02:59 AM

Quote:

Originally Posted by Monomer

depends on the hardness of the metal.

Carbide is pretty strong... you can buy a carbide cutter for six bucks.

Monomer · #38 05-27-2008, 08:01 PM

Quote:

Originally Posted by Cervan

Carbide is pretty strong... you can buy a carbide cutter for six bucks.

surface finish wont be as good as grinding. Cermet would be a better material for this situation - better surface finish. They dont require the tooling pressure that carbide does to get a good finish, a light pass with real slow SFM and high rpm will work nicely.

Indexable cutters are perfered, but look into spending more.

Now, if you were to mount your grinder (dremal, whatever) stationary on the lathe's apron, set it for center.....

GREASY_BEAST · #39 05-28-2008, 12:30 PM

Quote:

Originally Posted by Monomer

Now, if you were to mount your grinder (dremal, whatever) stationary on the lathe's apron, set it for center.....

Thats what I did. Zip-tied it, no less. Got all 5 DVs to within 0.003" of eachother... not very good if you ask me, I would look for 0.0005 with something like this.. but better than I could have done by hand. I think if I secured the dremel better (with a method slightly more stable than zipties) it would have yielded better results. These little buggers are quite hard, I have very little experience with carbide so I just don't know how well they would cut, but from what I do know of carbide is that the cutter needs to be fairly big and have a fairly large amount of material near a tip of fairly large radius, and that the cutter needs a steel backing, because the material is quite brittle. That would eliminate it from this application due to the lack of available space to work with. I could be totally wrong.

EDIT: I have read/heard references to "laser cut" delivery valves.. do they actually mean laser or EDM? why would someone use a laser to cut a delivery valve?

Monomer · #40 05-28-2008, 09:37 PM

Quote:

Originally Posted by GREASY_BEAST

EDIT: I have read/heard references to "laser cut" delivery valves.. do they actually mean laser or EDM? why would someone use a laser to cut a delivery valve?

I've never dealt with laser.

EDM would be an option - insanely expensive one at that. Someone with a good Surface grinder and an indexing head would be your best bet.

babymog · #41 05-29-2008, 09:03 AM

Is this the same for 60x delivery valves? I only see 61x discussed.

Quote:

Originally Posted by bgkast

You should cut your delivery valves: http://www.superturbodiesel.com/std/viewtopic.php?f=9&t=86

GREASY_BEAST · #42 05-29-2008, 10:13 PM

I wouldn't touch the DVs until you have an intercooler, a pre-turbo pyrometer, and a method of delivering more airflow to the engine than the stock setup provides, regardless of the engine type. And yes, I think messing with the DVs would yield results in a 60x engine... I don't know whether its been tried.

jkn70 · #43 12-08-2009, 08:27 AM

It´s alive!

http://www.youtube.com/watch?v=S9S22SawSxc

Engine.

http://www.youtube.com/watch?v=Skam-aeCFOY

KarTek · #44 12-08-2009, 09:47 AM

Great job on this project! It sounds like there is some sort of bypass on the supercharger when it's idling. I didn't really hear the blower sound until the engine was revved.

May be an illusion though. I love the sound it makes!

dealwithit · #45 12-15-2009, 06:32 AM

that is the weirdest sounding diesel i've ever heard lol.