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+--- Thread: om606s Volumetric Efficiency (/showthread.php?tid=4572)
om606s Volumetric Efficiency - Turbo - 05-12-2013
Do somebody here have some input regarding Volumetric Efficiency in the om606 over 1000-6000 standard engine? I guess it is quite easy to measure in a standard engine since the present of the air flow meter, but mine is since long put out and strip of that.
I am doing some simulation in matchbot on different turbo setup and turbos to come to a set up that I would like and it is starts to look interesting but the Volumetric Efficiency I am little unsure of how it look.
RE: om606s Volumetric Efficiency - raysorenson - 05-12-2013
Have you seen this document?
http://www.w124performance.com/docs/mb/OM60X/SAE_OM606_NA.pdf
It's got VE info an N.A. 606. Different intake, different intake cam, but maybe you can get in the ballpark with this info.
RE: om606s Volumetric Efficiency - Turbo - 05-13-2013
Hello
thanks for sharing information, thought it would be interesting to compare this engine to the om606.962.
I guess there would be some measuring without turbo first from my part since this affect my calculation quite a lot, I am specially interested what happens to Volumetric Efficiency between 5000-7500rpm
I do wonder if a similar document exist for the om606.962
(05-12-2013, 07:23 PM)raysorenson Have you seen this document?
http://www.w124performance.com/docs/mb/OM60X/SAE_OM606_NA.pdf
It's got VE info an N.A. 606. Different intake, different intake cam, but maybe you can get in the ballpark with this info.
RE: om606s Volumetric Efficiency - mantahead - 05-13-2013
some good reading and info there.
i think cams and valve springs will make a big difference from 5000 to 7500rpm.
RE: om606s Volumetric Efficiency - EDH_Performance - 05-15-2013
(05-13-2013, 06:24 PM)mantahead some good reading and info there.
i think cams and valve springs will make a big difference from 5000 to 7500rpm.
Stock valvesprings are terrible, around 15-18kg of springrate= slow revving tractor engine^^
RE: om606s Volumetric Efficiency - Turbo - 05-15-2013
how much do you dare to rev your engine?
(05-15-2013, 06:38 AM)EDH_Performance(05-13-2013, 06:24 PM)mantahead some good reading and info there.
i think cams and valve springs will make a big difference from 5000 to 7500rpm.
Stock valvesprings are terrible, around 15-18kg of springrate= slow revving tractor engine^^
RE: om606s Volumetric Efficiency - mantahead - 05-15-2013
[quote='Turbo' pid='51691' dateline='1368650196']
how much do you dare to rev your engine?
let her rip, lol
cam sprocket bolts came loose on my standard om605 with high revs.
RE: om606s Volumetric Efficiency - EDH_Performance - 05-16-2013
(05-15-2013, 03:36 PM)Turbo how much do you dare to rev your engine?
(05-15-2013, 06:38 AM)EDH_Performance(05-13-2013, 06:24 PM)mantahead some good reading and info there.
i think cams and valve springs will make a big difference from 5000 to 7500rpm.
Stock valvesprings are terrible, around 15-18kg of springrate= slow revving tractor engine^^
Max rpm is aroundt 6200rpm because of weak little end of those crappy swedish rods
But my valvetrain can handle up to around 8000rpm with the springs i have;D
RE: om606s Volumetric Efficiency - Turbo - 05-16-2013
Thanks for the info
I will settle my self with 7500 for my project
And I do not use Swedish rods
(05-16-2013, 12:43 AM)EDH_Performance(05-15-2013, 03:36 PM)Turbo how much do you dare to rev your engine?
(05-15-2013, 06:38 AM)EDH_Performance Stock valvesprings are terrible, around 15-18kg of springrate= slow revving tractor engine^^
Max rpm is aroundt 6200rpm because of weak little end of those crappy swedish rods
But my valvetrain can handle up to around 8000rpm with the springs i have;D
RE: om606s Volumetric Efficiency - mantahead - 05-16-2013
what other rods are available? whats the limit on standard?
RE: om606s Volumetric Efficiency - Eric78 - 05-18-2013
(05-16-2013, 03:46 PM)mantahead what other rods are available? whats the limit on standard?Eagle forged rods from America apparently, nothing on their site is listed for Merc OM60x engines but apparently something they make is suitable.
What exactly are the specs of the OM60x Rods? So I know which aftermarket ones fit.
RE: om606s Volumetric Efficiency - Turbo - 05-21-2013
If one start to observe the figure 7 diagram what is the scale of the x axel?
(05-12-2013, 07:23 PM)raysorenson Have you seen this document?
http://www.w124performance.com/docs/mb/OM60X/SAE_OM606_NA.pdf
It's got VE info an N.A. 606. Different intake, different intake cam, but maybe you can get in the ballpark with this info.
RE: om606s Volumetric Efficiency - HaavardPYA - 05-22-2013
Good question on the rods there! And what options are there on cams and valves/springs?
RE: om606s Volumetric Efficiency - maxypriest - 05-22-2013
(05-22-2013, 01:40 PM)HaavardPYA Good question on the rods there! And what options are there on cams and valves/springs?Indeed, good question.
I have a pair of NA cams... Worth fitting to a std 606?
RE: om606s Volumetric Efficiency - raysorenson - 05-22-2013
(05-21-2013, 04:53 PM)Turbo If one start to observe the figure 7 diagram what is the scale of the x axel
That chart is pathetic. I'm almost sorry I linked to it:-(
To answer your question, most likely VE. How VE can be so low below 2000 rpms is a mystery. Maybe the throttle valve is closed at low rpms. You probably also noticed that "100" is the 9th rather than the 10th graduation on the X axis. WTF?
RE: om606s Volumetric Efficiency - Turbo - 05-23-2013
Yes I saw the figure 7 have a lot of strange things
what is WTF? something that is not so good to write in full here?
it would be very interesting to ask the authors some questions about that paper.
I have this system on my E320 gasoline but the pipes is in plastic so I guess it would go kaboom when a play the BMW 535D R2S turbo. But if I can find a metall one it would be interesting to explore for develop on om606.962, but it need to take 3 bars of boost any way, and if not it will be a much bigger kaboom
(05-22-2013, 05:43 PM)raysorenson(05-21-2013, 04:53 PM)Turbo If one start to observe the figure 7 diagram what is the scale of the x axel
That chart is pathetic. I'm almost sorry I linked to it:-(
To answer your question, most likely VE. How VE can be so low below 2000 rpms is a mystery. Maybe the throttle valve is closed at low rpms. You probably also noticed that "100" is the 9th rather than the 10th graduation on the X axis. WTF?