E320 CDi mod
New cams works very well. (260/260, 9,5mm lift, orig. ~2X210, 7,7mm lift)
Engine pulls fine from idling -> 5000rpm.
No more power.
Maybe little more torque, thats all.
Still something limits the power.
Only head porting undone any more...
Well, I´ll try that.
If that does not help, I´ll give up.
I am tired to work very hard to make new parts work well, and still reach only the "old" level.
Yes, look at a 606 without its manifolds and the intake/exhaust ports on the head are huge. Probably due to cost and/or emissions.
Cams are from local workshop. R-koneistus.
The "shape model" is VP5, exactly same, as VW enthusiasts are using.
And have rather good results with it.
I can recommend, engine behavior gets better, sharper.
Intake manifold is still stock, I forgot that.
I must think about it...
At least flaps are not "well come".
As 240D told, intake ports are surprisingly small.
Hardly forefinger fit in its.
Exhaust side is much much better, I don´t understand that.
The hole is there 34mm wide.
I have bought now two more heads.
The other is in "exploratory-use" only.
So, that the other could have as big holes, as possible.
I really want to have some real change now !
Intake


Exhaust, both sides are equal, and comes apart in one (34mm wide) hole.
Intresting figure about MAF - sensor values (airmass).
Yellow: 2,5bar boost, orig. cams.
Red: 2,3bar, new cams.

Yes, they are equal...
No more air -> no more power.
This car is cursed.
Maybe I should stop coursing and start praying...
I sent the head to work shop.
Is this called "porting"?
The Best of Mercedes & AMG
No any news yet.
The difficult thing seems to be make the swirl stronger and get more air to cylinder.
I let you know, when there is something to tell.
I have done my first own remappings.
Driving now for my "own program"
This learning is just in the beginning, but it is very interesting.
Hoping, that I don´t need anyones help anymore.
I have tuned my 2005 E320CDI with just a tuningbox so far, with about 255 hp and 570 nm on the dyno. How would you rate the following cheapish fixes to getting even more power? (but on my autobox, is it wise?):
a) gut the exhaust leaving just the rear (or none) mufflers
b) higher flow nozzles
c) larger propellers
By the way, did you ever post the company name for the larger nozzles?
And the tuningbox will certainly have to go when upping the power, but I don't want to start cranking up the air or fuel until I have the exhaust temp and pressure gauges hooked up, still looking for something that I can have temporarily or permanently in the interior. Looks like I'm ending up with a homebrew ARM9 with 3,5" touch LCD, 40 A/D IOs and calibrate myself ($ 200).
I suspect that getting the same hp/l as you've shouldn't be impossible, if the slushbox can take it. My friend who runs the dyno and tuning business has a personal best with a 1.4 Yaris tdi getting 204 hp to the front wheels. Otherwise he prefers Cummins I6 in his Dodge.
Bjørnar
web.mac.com/bjornarhuse
Hi Björnar.
I am closer that you might expect... in Finland.
Maybe the easiest is if you can get a decent remapping from your friend.
~270hp/+600nm is possible.
I don´t personally like at all those "tuning-boxes".
You don´t need to do anything for exhaust pipe, or cats, if they are ok.
Neither new injectors, because there are no "easy" alternative to have a bigger turbo.
And what you first need is a bigger charger and cooler.
I can send pm to you, if you need the address of injectors.
I had tested a lot during last weeks.
And it seems, that I have also learned something. (I do hope so)
In orig. program, max fueling rate till 4200rpm is 54.5 milli/1000 work stroke.
That gives 122hp.
In my car it is 135milli.
You can calculate, why...

Maybe the one reason has been (too) less knowledge.
...And there are little improvement in head too. (cylinder head)
But allthough, I get now all that fuel burn practically with no smoke.
The car pulls nicely, I am planning dyno-day.
Last edited by tuikku; Jan 1, 2009 at 02:20 PM.
My dyno friend will probably end up doing the OBDII remap, but I would like to have an exhaust temp and turbo pressure gauge first. And probably new nozzles. Are there any fuel restrictors that you showed earlier, in my fueling lines too?
My dyno looks like this:

I tried to find out where you live, if you're in Rovaniemi (I found a mention of a tuning shop there) we are about one days drive apart. In my previous job I used to travel a lot on the Norwegian north end, but seldom over the border to Sweden or Finland...
You can very well drive with a smoking car, but you should be running an exhaust temp gauge before the turbo. The limit is 900 deg F, 1100 deg F in short bursts (10-30 sec). A small turbo will limit the amount of air, leading to smoke. A clogged kataclysmic perverter or particle filter/exhaust the same.
I had a drag race can only on my Ford Excursion and I reached 900 degrees after the turbo (equals about 1250 before the turbo) in about 15 seconds at 2500 rpms flat out. But that was a very quick 3,5 tons truck...
If you have a specially prepared engine with more heat tolerant innards and turbo, you can run with smoke poring out with not much concern. On a standard passenger car this will lead to cracked heads, broken turbo vanes, cracked valves or valve seats or pistons with holes in them.
A quick and easy way of making lots more power is of course propane injection, which works on a diesel the way NOS works on a gas engine. A 30-50% power burst is possible. Which will of course lead to engine wear, like on my friends Ford F-250 PowerStroke with around 750 hp, at least two of the pistons burned through and jammed, the rods broke at the little end and to make sure the breakdown would be outrageously expensive the broken rods came out the block on the side and pierced the starter.
Propane injection is probably the quickest and possibly the cheapest way to make more burst power, but it must be electronically controlled. Adding propane at too low revs WILL break the engine.
Hehe.... Good luck... :-)
You can very well drive with a smoking car, but you should be running an exhaust temp gauge before the turbo. The limit is 900 deg F, 1100 deg F in short bursts (10-30 sec). A small turbo will limit the amount of air, leading to smoke. A clogged kataclysmic perverter or particle filter/exhaust the same.
I had a drag race can only on my Ford Excursion and I reached 900 degrees after the turbo (equals about 1250 before the turbo) in about 15 seconds at 2500 rpms flat out. But that was a very quick 3,5 tons truck...
Bjorn,
Thanks for your very informative post. You are obviously an enthusiasist. I love the Excursion too which is really a F250 truck with an enclosed bed. Are there lots of diesel fans in Norway too? I watch a lot of Finnish diesel clips on You Tube. Very impressive.
Maybe I should radically tune my car after the warranty expires. The trouble in North America is insufficient demand for tuning parts for diesel motor cars (a mere 3% of all cars). Trucks, of course, are totally different.
If you have a specially prepared engine with more heat tolerant innards and turbo, you can run with smoke poring out with not much concern. On a standard passenger car this will lead to cracked heads, broken turbo vanes, cracked valves or valve seats or pistons with holes in them.
A quick and easy way of making lots more power is of course propane injection, which works on a diesel the way NOS works on a gas engine. A 30-50% power burst is possible. Which will of course lead to engine wear, like on my friends Ford F-250 PowerStroke with around 750 hp, at least two of the pistons burned through and jammed, the rods broke at the little end and to make sure the breakdown would be outrageously expensive the broken rods came out the block on the side and pierced the starter.
Propane injection is probably the quickest and possibly the cheapest way to make more burst power, but it must be electronically controlled. Adding propane at too low revs WILL break the engine.
Hehe.... Good luck... :-)
Thanks for your very informative post. You are obviously an enthusiasist. I love the Excursion too which is really a F250 truck with an enclosed bed. Are there lots of diesel fans in Norway too? I watch a lot of Finnish diesel clips on You Tube. Very impressive.
Maybe I should radically tune my car after the warranty expires. The trouble in North America is insufficient demand for tuning parts for diesel motor cars (a mere 3% of all cars). Trucks, of course, are totally different.
Thick black smoke means huge heat stress also.
In race cars...ok, but not "in every days drive".
There are various reasons for black smoke.
Lack of air is only one of them, and definitely not the worst.
Too long spraying time is worse, wrong timing...
Björnar, I am working on railroads, and living a bit souther and smaller town.
This is "only" hobby.
AMG injectors fits perfectly to your engine and works decently even with the orig. program, idling works also.
They gives +30% power and torque immediately.
But, as I said before, your orig. turbo is too small to those injectors, if you will use the full capacity of them.
As for US diesel tuning; while I lived in Seattle we had a F-250 SuperCab to haul a 11.000 lbs semi fifthwheel camper. With a 460 gas 250hp engine it sure guzzled a large quantity of gas. A diesel would be better, but the good PowerStroke didn't come until the late 90s, when I was back in Norway. Tuning diesel engines in the US is no problem, as long as it is one of the (previous?) big three. For car engines, there is far less than in Europe. Having the biggest and baddest truck engine is fine, but the handling and weight of the trucks make much of the power advantage vanish. See for instance http://www.dieselpowermag.com/news/0...ine/index.html
By the way, if I want to go really fast, I jump onto the Duc... http://www.youtube.com/watch?v=bIGjmyiDmI0

Nozzle: Bosch number 0433171798 DLLA 156p 1256+
If you can buy injector or nozzle somewhere in very good price , tell us too..
Last edited by joskami; Jan 9, 2009 at 11:18 AM.
My dyno friend will probably end up doing the OBDII remap, but I would like to have an exhaust temp and turbo pressure gauge first. And probably new nozzles. Are there any fuel restrictors that you showed earlier, in my fueling lines too?
My dyno looks like this:

I tried to find out where you live, if you're in Rovaniemi (I found a mention of a tuning shop there) we are about one days drive apart. In my previous job I used to travel a lot on the Norwegian north end, but seldom over the border to Sweden or Finland...



