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#1
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M103 Power Increase
Found camshaft upgrades for M103 on German EBay:
Nockenwelle Mercedes M103 AMG Brabus | eBay dbilas Nockenwelle 280° Mercedes 6-Zyl. 260 - 300 M103 | eBay
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I never go far without a little Big Star 1994 E500 199/Gray 82k 84 300D (Salty) Orient Red/Palomino 141k 88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes. 88 300CE Brabus 3.6 199 on Black 44k |
#2
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You can get custom welded up and ground camshafts for less. I am sending my m104 cams out soon to WEB CAMS. I got quoted 700.00 for two cams. Then it is just how far do you want to go with it with springs and valve to piston clearance etc.
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#3
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[Thread Jack]
Whipple I don't know if you plan on going to solid lifters, but if so take a look at post 98 DOHC H4 Subaru buckets. They're the same diameter and if they're thinner (haven't gotten any to check yet) you could improve valve geometry pretty drastically along with running far more aggressive ramp angles.
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1993 190E 2.6 Sportline |
#4
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Do you have to go with stiffer springs after putting in the the cams? Different valves?
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I never go far without a little Big Star 1994 E500 199/Gray 82k 84 300D (Salty) Orient Red/Palomino 141k 88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes. 88 300CE Brabus 3.6 199 on Black 44k |
#5
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It just depends. Spring rate has to be high enough to get the valves closed if going with a pretty radical cam. If you are going to go for a mild cam then not so much. You should have some springs checked though to get the rate. They also do wear out over the years.
How high of rpms do you want to go? This is mostly stuff that you need to discuss with the cam company and your local engine builder about. A good engine builder can really guide you through this. |
#6
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do what I did to my m104 over last weekend.I bought a zex nitrous kit,I was using a 150 shot but plugs turned blue.Plug I went 2 heat ranges colder am running a safe 100 shot.Fast ain't the name for it.I burn tires now at 30mph.
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1999 w140, quit voting to old, and to old to fight, a god damned veteran |
#7
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3.6 M103 tidbit
Just for s&*%$ and giggles, I emailed Oettinger to ask them about their M103 3.6 conversion and this was their response:
Dear Mr. Smith, thank you very much for your email request. We also wish you a Happy New Year. I forwarded your email to my colleague from the technical department. He gave me the following feedback. The Company OETTINGER / OKRASA rebuild the 300 DB from 3.0 Liter to 3.6 Liter with its own crankshaft 94.5 mm stroke and a piston diameter of 90.00 mm. The cylinder head has been expanded and polished, a separate camshaft was installed, The series connecting rods were changed in the connecting rod eye so the piston / crankshaft etc. fit. The engine block and oil pan were processed on parole. We don’t have any further information or documentation. We don’t offer these parts for at least 15 years. Sorry that I don’t have better news for you. I hope we were able to help you a little anyways. Mit freundlichen Grüßen, With best regards Sharon Brandimarti
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I never go far without a little Big Star 1994 E500 199/Gray 82k 84 300D (Salty) Orient Red/Palomino 141k 88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes. 88 300CE Brabus 3.6 199 on Black 44k |
#8
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AMG M104 Cams
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I never go far without a little Big Star 1994 E500 199/Gray 82k 84 300D (Salty) Orient Red/Palomino 141k 88 300CE (Ersatzhammer) 904/Java 163k -- Turbo Technics twin turbo kit, AMG Gen I body kit, Sportline steering box and steering wheel, Sportline/Eibach /Bilstein Sport/500E suspension, Quaife LSD in 210 mm diff case, Silver Arrow brakes. 88 300CE Brabus 3.6 199 on Black 44k |
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