I am thinking about adding a little nitrous to my 87 300E. Check out the website below:
http://www.zex.com
The install seems really simple and no extra fuel delivery is needed. Is this safe? or am i fooling with something that will blow my engine? By the way, you can get these kits on Ebay for $450. your comments on this system would be greatly appreciated!
Thanks,
Adam

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320

Running your engine "on the bottle" is pretty safe, as long as you follow the kits instructions on installation and you don't go crazy with the jetting adjustments.

Nitrious has been around a long time at the drag strips, if you have any questions most any Rod Shop will usually have some pretty knowledgeable people working there.

Only upgrade you may need to perform along with the Nitrious kit install is a fuel pump rating increase, but only if you are going for large hp increases ususally.

Another downside, it's easy to run threw a bottle while having fun! You may need to buy at least 2 bottles when you buy the kit, that way you always have one on hand when you have had your fun with the other.

No way!! I could add nitrious to my 300E and it wouldn't hurt my engine?? Now that makes no sense, would it do just minimal damage or are MB engines just very strong?

Thanks, please get back to me im really curious

The idea of todays nitrous systems is that you don't burn up your engine. but if you get the mixture rong....example, lean fuel mixture and a lot of nitrous. You will toast something like valves, piston rings, head gaskets, ect. It would be highly recomended to get a checkup on your engine before you add a nitrous oxide system. By the way,,,,, MB engines are very strong. didn't you know?
good luck!
Adam

heh, well my engine has a lot of work needed until i would feel good about putting Nitrous in it....I knew they weighed about 500lbs more than usual engins, so i guess that means there strong:p

Thanks

No added fuel? Kaboom. The NO2 carries aditional oxygen into the combustion chamber. That's how the squeeze works, by "squeezing" more O2 into the chamber carried by Nitrogen, which has no part in the improvement of power.

Think about it. Increase the O2 content, even marginally, at the same given throttle opening (NO2 NEVER used at less than full throttle) will lean out the mixture. Want a hole in a piston? Run NO2 without enriching the mixture. Even a mild 75hp squeeze can blow your engine to bits due to lean-out.

There is the cost of filling the bottles, and the extra strain put on your engine. If you squeeze it infrequently, your engine wear will be minimal, but then what fun is that?

Also, realize that the NO2 can only be used at wide-open throttle settings. Typical install has a master arming switch, and then a micro-switch under the gas pedal. It can only be used under certain driving conditions. NO2 is very usefull for drag racing, but useless for canyon carving.

Also, you'll lose lots of trunk space, if it's important to you. My Camaro's trunk went from small to nothing with the bottle. But, the added 125hp put me on equal footing with a big block...

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John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif

John,
I did some reasearch on this nitrous system, what it dose is cut off the vacuum to the fuel pressure regulator. This diverts all the pressure to the fuel injectors instead of back to the gas tank. Thus produces a rich mixture. the problem is i don't know weather this system works with CIS..... It may just work with EFI.
Another alternative for producing a rich mixture is to have the cold start injector open when the nitrous is on. What do you think?
Adam

Testing

Something you might be interested in... in the last hotrod magazine, there is this product from NOS called Noszles (I think) They plug in-line with the injectors, and use them as a distributing method, got from 100 shot to 300 shot I believe. Hotrod rated them pretty highly, but I think they are pretty expensive...$1k???

I have researched this for my M103 190. The Zex system wont work as it relies on a voltage signal to determine wide open throttle. NOS has a system that will work, this is the email I received from them

Subject: Re: NOS application for Mercedes Benz [T20020227008J]


You will have to verify that your vehicle has a vacuum sensitive fuel pressure regulator in the engine compartment. You can verify this by looking at the sticker that is found on the bottom side of the hood or on the radiator support. This sticker shows the vacuum hose routing. Look and see if it shows a vacuum hose going to your fuel pressure regulator. If you are still unsure, call the dealer and ask them. If you have this vacuum sensitive fuel pressure regulator, then the kit that most likely would fit your car is part number 05123 ($670.list) and will add 50-60HP safely to multi port electronically fuel injected engines. This is normally enough power to drop the 1/4-mile times by 1-1.5+sec. This kit is also easy to install (about the same as a car stereo install w/amp/CD changer 3-5 hours). No other modifications. are required to run this kit.

Thanks, NOS tech dept.

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1993 500E
http://2phast.com/500e/500e-sig.jpg

Sorry I know this post is old but this is my favorite subject!

I am a Nitrous fiend! I have NOS'd so many cars i can't remember!
everything from MOPEDS to V12's. I have even gone as far as blowing up engines on n2o or trying to. Yes pistons are the first to go. On Hondas Conrods usually break first. Mercedes are really tough. If you keep the HP around 15 HP per cylinder you should have no problems. after 30hp per cylinder is when things start to wear quicker. One thing n2o does do is clean the inside of the cylinder real well.

1980 450SL The car bone stock ran a 16.50 1/4 mile time.
0-60 was 9.3 seconds. The car was an automatic. we added 120 HP of n2o by direct port (n2o and fuel injected into each port) 15 hp per cylinder. Car had 80k on the odo. Bone stock with Catalytics! Stock tires 205/70-14

after 120hp n2o:
0-60 dropped to 6.4 seconds
1/4 mile 14.62 @ 95mph

upped n2o to 150 hp
0-60 6.1 Seconds
1/4 mile 14.11 @ 95 mph

After approx. 4 bottles of n2o we had to replace the flex-coupler......

upped n2o to 180 hp! (22.5 hp per cylinder)
changed to one step colder plugs NGK BP6ES
0-60 5.9 Seconds
1/4 mile 13.89 @ 97 mph
Our goal was just to break into the 13's with this car.

We left the car like this for a few weeks but every 5th bottle we would have to change the flex coupler. We lowered the n20 back to 150 hp and no problems after that. Plus the bottle lasted about 8 runs. Driving the car on the street was crazy. It would spin the Michliens at 30 mph. I am sure if we ran better tires the times would drop significantly. or ran drag slicks? hmmmm

__________________
WARNING: Bastard Mercedes Builder/Tuner
Sorry if I don't answer your email or questions
I don't check here too often.
I am normally on the 190revolution.net board.
Thanks

One question, whats a flex coupler? It dosn't sound familar to me.
Thanks in advance

also called a Flex Disc some people call it Driveshaft coupler. It is a rubber coupler between the driveshaft and transmission.

To much money into it. and way to hardcore for me

How are you able to keep upping the hp amount? How do you keep getting the extra N2O and required fuel into the cylinders?

Another 120hp in my 500E sounds attractive!

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David Hendy
'97 Renntech E60RS
'97 GMC 2500 Sub' Diesel
'95 E300D
'88 300TE
'88 250TD
'84 L/Rover 109