Max power on om602 with 7 mm elements, everything else stock. - PeachParts Mercedes-Benz Forum

tomnik · #1 08-09-2009, 06:12 AM

Quote:

Originally Posted by Deni

Hi Tomnik,

I apologize I didn't write you anymore, as I've agrred with myself that if I don't sell the car until the end of the summer than it stays with me. The first expenditure will be 7 mm elements from you, if you still have them

.

In October the 7.5 elements will be available. Wait for them!

Quote:

Originally Posted by Deni

I've set my turbo at about 15 psi now. How much power can I get from 15 psi worth of air? I know the answer is far more complicated as it depends on many factors, but roughly speaking.

Up to now I never did a dyno run. For me the # of hp is not important, it's more the feeling and top speed that I can "measure".
Just put your boost to 15 psi and check it. I am more interested in getting better drive ability (mileage, emission, better efficiency,...) than pushing to the limits for racing, so I limit boost to max. 1 bar and max. rpm to 5000/min but just for governor setting. I can not remember when I ever rev'd beyond 4500/min. Nice running engine without idle issues and smoke are my goals instead of just one super race then loosing the engine...
I have an IP of a 602 turbo waiting for the elements but it will be installed in a boat of my friend and I have only my 603a and 617a, otherwise I would send you a modified IP for testing.
Try to get a VTG. This will be a good up-grade for stock IP and later do the IP.

Tom

Deni · #2 08-09-2009, 06:23 AM

Quote:

Originally Posted by tomnik

In October the 7.5 elements will be available. Wait for them!
Tom

Won't the 7.5 mm elements give too much fuel for a regular idle?

tomnik · #3 08-09-2009, 07:44 AM

no, idle quantity is calculated identical to the 5.5.
Idle quality is also a question of element quality, which is poor for the after market 7 mm.
With full load screw adjusted accordingly the 7.5 deliver the same amount of fuel, but can also deliver approx. 100ccm/1000 rev within the same range of end of delivery compared to the 5.5.
As soon as I have my 6.5 MW elements ready (the Ms will be ready later) I will "test" the capability of the new bench guy in setting the governor.
This guy is successfully doing some IPs for race trucks but never thought of using custom elements (up to now

).

Tom

auspumpen · #4 08-09-2009, 02:22 PM

Quote:

Originally Posted by tomnik

no, idle quantity is calculated identical to the 5.5.
Idle quality is also a question of element quality, which is poor for the after market 7 mm.
With full load screw adjusted accordingly the 7.5 deliver the same amount of fuel, but can also deliver approx. 100ccm/1000 rev within the same range of end of delivery compared to the 5.5.
As soon as I have my 6.5 MW elements ready (the Ms will be ready later) I will "test" the capability of the new bench guy in setting the governor.
This guy is successfully doing some IPs for race trucks but never thought of using custom elements (up to now

).

Tom

Please consider me very interested in your 7.5mm elements (M-pump).

Tymbrymi · #5 08-10-2009, 03:31 PM

Quote:

Originally Posted by auspumpen

Please consider me very interested in your 7.5mm elements (M-pump).

x2!!!

How are you going to address the reliability (re: idle) over the 7mm elements?

tomnik · #6 08-10-2009, 06:30 PM

Quote:

Originally Posted by Tymbrymi

How are you going to address the reliability (re: idle) over the 7mm elements?

poor fabrication quality. I have some of them on my table. My bench guy was unable to adjust individual quantity through the range of rpm. Either good idle and poor high rpm or the other way round.

Tom

Tymbrymi · #7 08-15-2009, 04:56 PM

Quote:

Originally Posted by tomnik

poor fabrication quality. I have some of them on my table. My bench guy was unable to adjust individual quantity through the range of rpm. Either good idle and poor high rpm or the other way round.

I was referring to the elements you're designing... Is your fab house more reliable? I hope so!!

Thanks for going through all the effort of designing these things...