MI16 on twin Weber 45,Problems with crank Breather!!
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  1. #1
    Tadpole
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    Default MI16 on twin Weber 45,Problems with crank Breather!!

    I'm putting MI16 engine in to my 205 and running carb's, up-rated everything and its go to be a very revy engine. The problem is that the positive pressure from the crankcase will be to much and oil will piss out every where. Dry sump would be nice, but costly.....or catch tank is a option.

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    Has anybody been here with this problems???

    Cheers Luke

  2. #2
    1000+ Posts PeterT's Avatar
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    Quote Originally Posted by Luke-UK
    I'm putting MI16 engine in to my 205 and running carb's, up-rated everything and its go to be a very revy engine. The problem is that the positive pressure from the crankcase will be to much and oil will piss out every where. Dry sump would be nice, but costly.....or catch tank is a option.

    Has anybody been here with this problems???

    Cheers Luke
    Yes, you need to fit the original breather hoses/filler pipe and/or duplicate it. The filler neck is actually a small catch tank, which returns the oil to the sump.

    '92 205 Mi16
    '90 Mi16x4

  3. #3
    Fellow Frogger! MYT205's Avatar
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    I have done what PeterT mentioned as well as fitting an additional catch tank.

    I have throttle bodies on my 8v so similar situation to yourself.

  4. #4
    Banned orestes's Avatar
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    somebody please explain to me why you would go back to carbs from injection

  5. #5
    1000+ Posts Dave's Avatar
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    Quote Originally Posted by orestes
    somebody please explain to me why you would go back to carbs from injection
    He has a very worked engine apparently so the standard ecu probably would not like it. I know programmable injection would be the best solution, however there are plenty of cheap dcoe's over in the uk so if its just a play car and your not as worried about fuel consumption they are a cheap alternative.

    Dave


  6. #6
    Fellow Frogger!
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    If you set out to revamp your fueling system:

    Well tuned carbs can provide healthy power and response.

    Then think about the fact a decent carb setup can be cheaper than an entire new injection & management system.

    As well as the fact for some people carbs may be easier to tune than a specialised injection system.

    Plus the amazing sound of an Mi16 on carbs.

    Sure, carbs may not be for everyone but they can provide some serious power and are appropriate in cars that aren't necessarily daily driven so starting issues/fuel economy issues aren't such a big deal.

    In terms of outright reliability and ease of use on the road, injection may be superior but you have to consider the benefits of carbs for race/fast road use.

  7. #7
    Banned orestes's Avatar
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    Quote Originally Posted by Louis
    If you set out to revamp your fueling system:

    Well tuned carbs can provide healthy power and response.

    Then think about the fact a decent carb setup can be cheaper than an entire new injection & management system.

    As well as the fact for some people carbs may be easier to tune than a specialised injection system.

    Plus the amazing sound of an Mi16 on carbs.

    Sure, carbs may not be for everyone but they can provide some serious power and are appropriate in cars that aren't necessarily daily driven so starting issues/fuel economy issues aren't such a big deal.

    In terms of outright reliability and ease of use on the road, injection may be superior but you have to consider the benefits of carbs for race/fast road use.
    well i may look at eventually doing the twin carb setup on my car... but that is only because puting injectors on my engine would be a real p.i.t.a (even though it wouldn't be much to swap it mechanicly it would be a lot of wiring and i'm no auto electrician) but for 99% of the cases i think that a good programable injection system is a hell of a lot better then anything that carbs can offer... sure the carbs may sound nice and give you that what the hell is that kind of look from people... but to get the most out of an MI16 angine you wouldn't really be using carbs

  8. #8
    1000+ Posts PeterT's Avatar
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    Carbs are only cheap on the surface. All you're really saving is price of the ECU, as carbs cost the same as TB's. You still need to do something with ignition. Some put a modified 205 distributor on the Mi16, whilst others do ignition only ECU. With the later, you may as well do the whole thing!

    Another disadvantage of carbs is air flow. 45mm TB's flow a lot more than 45mm DCOE's as they don't have chokes. Carbs also don't provide the near pefect fuel mixtures and driveability (under all conditions) that an ECU can.

    The UK didn't have the same stringent emission restrictions like Australia until recently. So it's perfectly OK to fit Webers to a 1990 Mi16 in the UK. Do the same here and you won't pass go.

    '92 205 Mi16
    '90 Mi16x4

  9. #9
    Banned orestes's Avatar
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    Quote Originally Posted by PeterT
    Carbs are only cheap on the surface. All you're really saving is price of the ECU, as carbs cost the same as TB's. You still need to do something with ignition. Some put a modified 205 distributor on the Mi16, whilst others do ignition only ECU. With the later, you may as well do the whole thing!

    Another disadvantage of carbs is air flow. 45mm TB's flow a lot more than 45mm DCOE's as they don't have chokes. Carbs also don't provide the near pefect fuel mixtures and driveability (under all conditions) that an ECU can.

    The UK didn't have the same stringent emission restrictions like Australia until recently. So it's perfectly OK to fit Webers to a 1990 Mi16 in the UK. Do the same here and you won't pass go.
    do imported cars have to meet the same standards... i meen i think my car is about 89 built therefore it would have been a 90 model and has carbs
    Last edited by orestes; 29th July 2004 at 05:00 PM.

  10. #10
    1000+ Posts PeterT's Avatar
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    Quote Originally Posted by orestes
    do imported cars have to meet the same standards... i meen i think my car is about 89 built therefore it would have been a 90 model and has carbs
    no, grey imports don't have to comply. It will have an import plate, rather than an Australian compliance plate.

    '92 205 Mi16
    '90 Mi16x4

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