Home port job of the Eaton M62 s/c - Mercedes-Benz Forum
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post #1 of 169 (permalink) Old 04-24-2010, 04:10 AM Thread Starter
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Home port job of the Eaton M62 s/c

ended up getting a second eaton M62 s/c to play with... many guys get good results with porting of the eaton s/c's. gains of 10-15% with reduced IAT... you see some guys with cobras getting +40hp etc... well 10% of 400hp is 40hp.. even the guys on the mini cooper S's with the M45 get good gains ~20hp

while not expecting monster gains the goal is to reduce IAT's as the charger will be spinning faster and to reduce parasitic pumping losses

still work in progress but i can show you how much the outlet port has been opend up. thats pretty much the maximum it can go. its to match up exactly with the 120 degree timing of the rotors. the rotors edge is exactly parallel to the outlet port triangle.

the edges at the bottom which will be ground off and the bolts which go on the other side will be shortened. (not shown as yet)

pic of stock outline in green for comparison... ill post more pics as more work is done. inlet side is done very shocking casting processes from factory much can be improved here!

silencer holes can be plugged as these are a "boost leak" effectively and bleed boost back into the rotors to reduce sound. block these and the s/c will be crazy loud! not much performance gained from doing so and gain about 0.5psi boost.

once this is done its going to be time for a smaller s/c pulley. plan is to grind down the stock s/c pulley total 7mm to 87mm (stock is 94mm). this is the lowest you can go before you have to delete the s/c clutch and this will bring boost up to ~14psi (1bar) measured at the FPR.

of course more pix to come and results as things move along..... i want to sqeeze out every last HP i can!!
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- ASP pulley kit
- 87mm supercharger pulley
- Ported Eaton M62 supercharger
- Ported supercharger inlet manifold
- MAF screen & throttle body screen delete
- Automatic intercooler spray kit
- Single 2.5" Magnaflow Hi-flow cat
- Magnaflow rear muffler + Lukey Ultraflo resonator
- Shift-I progressive shift light
- Custom ECU tune
- Air box delete (custom) with BMC airfilter
- 10c degree STAR thermo fan mod
- FireStorm igntion coil booster
- 5 Bar fuel pressure regulator
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post #2 of 169 (permalink) Old 04-24-2010, 04:15 AM Thread Starter
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stock for comparision... & pic of another ported s/c for comparison
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- ASP pulley kit
- 87mm supercharger pulley
- Ported Eaton M62 supercharger
- Ported supercharger inlet manifold
- MAF screen & throttle body screen delete
- Automatic intercooler spray kit
- Single 2.5" Magnaflow Hi-flow cat
- Magnaflow rear muffler + Lukey Ultraflo resonator
- Shift-I progressive shift light
- Custom ECU tune
- Air box delete (custom) with BMC airfilter
- 10c degree STAR thermo fan mod
- FireStorm igntion coil booster
- 5 Bar fuel pressure regulator

Last edited by Subby_; 04-24-2010 at 04:22 AM.
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post #3 of 169 (permalink) Old 04-24-2010, 10:15 AM
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Good work Subby.

Can't wait to see the results.
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post #4 of 169 (permalink) Old 04-24-2010, 05:17 PM
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so when will you start doing this on the slk32 s/c?
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post #5 of 169 (permalink) Old 05-04-2010, 04:43 AM Thread Starter
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been a while...... but here it is so far

inlet & outlet all done. then time to "clean up" the external casing by sand blasting it to get it looking back to its prime!

then rebuild the unit with new bearings and seals... need to find a machine shop here which can grind down my spare s/c pulley down or create me a new pulley. then its a matter of bolting it on for 1 bar / 14psi of boost
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- ASP pulley kit
- 87mm supercharger pulley
- Ported Eaton M62 supercharger
- Ported supercharger inlet manifold
- MAF screen & throttle body screen delete
- Automatic intercooler spray kit
- Single 2.5" Magnaflow Hi-flow cat
- Magnaflow rear muffler + Lukey Ultraflo resonator
- Shift-I progressive shift light
- Custom ECU tune
- Air box delete (custom) with BMC airfilter
- 10c degree STAR thermo fan mod
- FireStorm igntion coil booster
- 5 Bar fuel pressure regulator
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post #6 of 169 (permalink) Old 05-04-2010, 04:59 AM Thread Starter
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another quick pic of a stock outlet port vs ported one... still some polishing finishing touches required
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- ASP pulley kit
- 87mm supercharger pulley
- Ported Eaton M62 supercharger
- Ported supercharger inlet manifold
- MAF screen & throttle body screen delete
- Automatic intercooler spray kit
- Single 2.5" Magnaflow Hi-flow cat
- Magnaflow rear muffler + Lukey Ultraflo resonator
- Shift-I progressive shift light
- Custom ECU tune
- Air box delete (custom) with BMC airfilter
- 10c degree STAR thermo fan mod
- FireStorm igntion coil booster
- 5 Bar fuel pressure regulator
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post #7 of 169 (permalink) Old 05-04-2010, 09:12 AM
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Looks really good. I can't wait to see the final results and how the car performs.
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post #8 of 169 (permalink) Old 05-04-2010, 10:01 PM
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This is tempting to do to my old one... lol

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post #9 of 169 (permalink) Old 05-04-2010, 11:52 PM
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subby, beautiful work, wish i had a second SC i could play with but unfortunatly i dont... Im currently working on building a new rear end and got some tuning tricks up my sleave but what you said cought my eye, you plan on grinding the stock pulley down 7 mm?

If you are secuessfull ill be at my mechine shop next day! the boost you plan on running sounds like alot of fun and the gains im sure will be close to 90HP! (on the theory that 3 PSI with ASP pulley = 40 HP gain). Please keep us informed as to what you are doing because this mod seams like a good bang for you buck (ASP $1200=40 HP vs Subby >$200 90HP)... Good luck and keep up the great work!

-GHOST
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post #10 of 169 (permalink) Old 05-05-2010, 12:36 AM
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I like that, should give it significant boost for sure...

Don't mistake lack of talent for genius
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