Any performance experts on the forum?

Discussion in 'Engine' started by NW_Merc, Jun 26, 2011.

  1. NW_Merc

    NW_Merc Banned

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    I need one of these
     

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  2. MYTHING

    MYTHING New Member

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    So what is it?

    It's obviously a solonoid valve or injectos,

    Is it Nos, water, or petrol?
     
  3. OP
    OP
    NW_Merc

    NW_Merc Banned

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    It's an injector, an adapted holder to hold a 5th injector to be exact.......

    I was just wondering if anyone knew if anyone stocked something like this or whether I'd need to either a) fabricate it myself or b) get someone to fabricate it for me
     
  4. mazza

    mazza Hardcore MB Enthusiast

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    Hi

    There's a few "addititional fuel injector boss" available off the shelve...

    most of the boss's require for the bottom bit to be welded to the manifold.

    loads from the US market.
    Additional Fuel Injector Boss CNC weld-on aluminum | eBay UK

    mazza
     
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  5. OP
    OP
    NW_Merc

    NW_Merc Banned

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    Thanks for that, in terms of the inlet manifold, what metal would you recommend to have it fabricated from and should I get it chromed or ceramic coated?
     
  6. mazza

    mazza Hardcore MB Enthusiast

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    Hi

    most inlet/plenums are made of aluminium...so I would say aluminium...or alumenum (if your American)..he he


    Do a good search on the internet...you never know...you might find something that will only require a minor modification to suit your applicaton.

    and i would leave it with polished aluminium look

    mazza
     
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  7. Rob77

    Rob77 Hardcore MB Enthusiast

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    Aren't they only relevant to turbo'd engines, or maybe when using nitrous?
     
  8. Shude

    Shude MB Club Veteran

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    Looks like the OP's top secret mod has been exposed! ;)
     
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  9. OP
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    NW_Merc

    NW_Merc Banned

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    Ok seeing as people would figure it out sooner or later. I am in the process of buying parts for a turbo kit. I have already got a Mosselman exhaust/turbo manifold from a fellow member and I am looking at other parts and costing them up. I know buying a car with a bigger engine would be cheaper as would getting a C230K, however I wish to take on the challenge of putting together another C180 turbo.....................
     
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  10. Ian B Walker

    Ian B Walker MB Club Veteran

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    Are you going to lower the compression? When we did one we took 1.5mm out of the stroke.
     
  11. OP
    OP
    NW_Merc

    NW_Merc Banned

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    I'll probably put in a thicker head gasket, there's a company which you'll probably know Ferriday Engineering who specialise in this sort of thing. Just need to talk to them about what thickness is needed, I'm guessing somewhere between 1.5 and 1.9 mm.

    I'll also need a good manifold fabricator who is good at pipe work. I know Pipeworx is good with exhausts........ would they do the pipe work to the intercooler?

    I'll also need a rice rocket type intercooler, so will need to look into companies who can do this close to the north west.
     
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  12. pimpmyc250td

    pimpmyc250td Active Member

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    looking forward to this... time to tune up the TD...
     
  13. OP
    OP
    NW_Merc

    NW_Merc Banned

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    My car is off the road for a year, so will be collecting parts as and when finances allow..........

    Will definitely do a HowTo/Project thread when it's ready to begin........

    I've even got the AMG front brakes from a C32 ready to be bolted on.....

    I'll keep everyone informed with recent developments as and when it happens....
     
  14. 312 Sprinter

    312 Sprinter Hardcore MB Enthusiast

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    I wouldn't do it that way personally. It gets the crown of the piston further away from the squish area in the head and lack of squish makes detonation much more likely. You'd be better off with a piston with a dish in it.
     
  15. Rob77

    Rob77 Hardcore MB Enthusiast

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    Won't a piston with a dish in it also put the crown of the piston further away from the squish area in the head?
     
  16. 312 Sprinter

    312 Sprinter Hardcore MB Enthusiast

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    No, it's dished piston, not a shorter piston. The edges of the piston will get near to the squish area, that is all that is required.
     
  17. OP
    OP
    NW_Merc

    NW_Merc Banned

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    There was a guy on here from the States who turbocharged a 3.0 litre W210 with a head spacer. I think Koolvin ran his turbo kit with a slightly thicker head gasket. The problem with running custom pistons is firstly they have to be made up and second there is no guarantee that the head will cope with the tolerances. There is another guy in Australia who has turbo'd a 230K engine who ran custom pistons. The guys who made them said that it would be better with the OEM piston set up.

    I dont think the tolerances are that close not to cope with a 1.5-1.9 mm head gasket. I'm not running a ton of boost either it will only be about 0.5-0.6bar and even that will be set up on a rolling road.

    If it works out cheaper just to use a 230K head or block then I'll start looking for one.
     
  18. andy clark

    andy clark Hardcore MB Enthusiast

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    why do u need a 5th injecter why not just up rate the other 4 my sierra cosworth has 500 bhp and 500 lb ft of torque and still has 4 injecters! are you going to up rate the managment to an after market ecu so it can be mapped and set up right?
     
    Last edited: Jul 1, 2011
  19. Martyn_n

    Martyn_n Hardcore MB Enthusiast

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    IMO a fifth injector is a bit of a bodge. There is no way of ensuring that the fuel air mix is getting evenly distributed between the cylinders meaning that you may be washing one cylinder and risking serious pre-ignition on another, one will shorten the life of the engine the other may destroy it or at best the knock sensor will force the ecu to retard the ignition to a point where any power improvement is lost anyway. (Both will kill your cat) Without the ability to analyse the flow to put the injector in the right place (I'm assuming you don't have access to a super-computer to model the airflow) there is no way of knowing if it is in the right place. After market (or re-mapped original) ECU is the only, reliable, way to go. Do it right or not at all.

    As andy says above with the right mapping / injector choice you shouldn't need an extra injector. (Having said that I vaguely remember RS500s had the facility for an extra 4!)
     
  20. andy clark

    andy clark Hardcore MB Enthusiast

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    back in the day rs500,s did run 8 injecters with about 560bhp but injecters have moved on so much now along with ecu,s you can run about 650 bhp on 4 now i run 4 siemens injecters and an autronic sm4 ecu mines mapped and set up by m.a.developments and my air / fuel ratio on boost is around 10.5 to 11 i also run 2.6 bar of boost! :D
     

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