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Thread: Building a Mk2 rs2000 cosworth

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    Spanner Monkey

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    Building a Mk2 rs2000 cosworth

    I am going to need lots of parts so far I have the mk2 RS 2000. Which needs a lot of body work I have 4x4 200 turbo Engine and a two wheel drive Cosworth gearbox I have sat there engine and gearbox in on existing pinto mounts using the RS 2000 sump I now have a two wheel drive Cosworth sump to have altered To use Help

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    Re: Building a Mk2 rs2000 cosworth

    what help do you need? if you trim the rear off the x member and reweld it, the cosworth sump will clear

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    Re: Building a Mk2 rs2000 cosworth

    Yes you do look to be right but everything I read people always put the fancy crossmembers on The engine seems to fit fine on original crossmember with RS 2000 engine bracket It’s close to bulkhead But clear as it had to trim out quite a bit for gearbox gear lever now near handbrake But it does look to leave room at front to start fitting intercooler and radiator haven’t got one yet I don’t want pins to hold bonnet down Want the car from the outside to look as original as possible

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    Racer Decade Plus User wildo105e's Avatar

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    Building a Mk2 rs2000 cosworth

    As said cossy sump will fit with a little work or just get it big winged and baffled to fit an escort. People tend to use World Cup cross members as Cosworth means big power. Not sure what rs2000 mounts will hold onto without moving in the slots of a standard x member.


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    Re: Building a Mk2 rs2000 cosworth

    back in the day the whole point of a world cup x/member was nothing to do with power, it was about not breaking engine mounts on really rough rally stages, back in the day they also used to drill the M8 engine mount bolts out to m10 to strengthen them, again nothing to do with power

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    Re: Building a Mk2 rs2000 cosworth

    Yes that seems to be a good idea to strengthen Mounts up Plus I was thinking if I got a different crossmember it may make the engine sit in a slightly different place and it seems good where it is I think I’ll have to sort something out with the prop shaft does fit but not very good Thank for help

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    Re: Building a Mk2 rs2000 cosworth

    Quote Originally Posted by wildo105e View Post
    As said cossy sump will fit with a little work or just get it big winged and baffled to fit an escort. People tend to use World Cup cross members as Cosworth means big power. Not sure what rs2000 mounts will hold onto without moving in the slots of a standard x member.


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    what i have found is standard rs mounts allow a fair bit of rotational movement due to the torque reaction,i am looking at putting a steady bar from the strut top to the flange where the turbo damper mounts but not sure if the cylinder head can cope with the loads

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    Racer Decade Plus User wildo105e's Avatar

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    Building a Mk2 rs2000 cosworth

    Quote Originally Posted by Graham View Post
    back in the day the whole point of a world cup x/member was nothing to do with power, it was about not breaking engine mounts on really rough rally stages, back in the day they also used to drill the M8 engine mount bolts out to m10 to strengthen them, again nothing to do with power
    It was indeed. But they seem to do quite well at holding engines solidly. Or chassis mount it. Either method seems to work. People talk about harshness but it just depends on the bushes used.


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    Re: Building a Mk2 rs2000 cosworth

    Quote Originally Posted by wildo105e View Post
    People talk about harshness but it just depends on the bushes used.


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    before the days of poly bushes very little was available, after wcxm fitting most engines suddenly felt like the mains have worn out!

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    Re: Building a Mk2 rs2000 cosworth

    Quote Originally Posted by wildo105e View Post
    People talk about harshness but it just depends on the bushes used.


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    before the days of poly bushes very little was available, after wcxm fitting most engines suddenly felt like the mains have worn out!

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    Spanner Monkey

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    Re: Building a Mk2 rs2000 cosworth

    Is there new stronger engine mounts that you can buy off-the-shelf Or will there be no stronger than strengthening up original ones with 10 mm hi tensile bolts has Graham mentioned Or could I make some sort of engine stabiliser

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    Re: Building a Mk2 rs2000 cosworth

    I fitted some fresh up rated ones from Rally Design that just screw into the rs2000 engine mounts

    Mine sits nice in the engine bay, close to bulkhead as you said but hasn't caused an issues and you can still get at the heater matrix pipes

    If your engine is running 2wd Cosworth exhaust manifold, check for clearance on the inner wing. Bolt it up to the head and see how close if it even fits? 4wd T25 one will work fine but there is limitations to this manifold
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    Re: Building a Mk2 rs2000 cosworth

    Big wing and trim the Cosworth 2wd sump so it will fit nice against the crossmember or use the RS2000 and mount the cam trigger with a Weber or HPE crank sensor mount that doesn't require a mount and bolts at the sump

    You may need to cut / machine the bottom crank pulley outer v pulley to only run alternator and give clearance for radiator/ intercooler install. I had too.
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    Re: Building a Mk2 rs2000 cosworth

    What radiator intercooler package did you use I want to make to sit nicely behind Rs2000 Front And I’m wanting to use the bonnet catch How does this type of crank sensor fit on Cheers

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    Re: Building a Mk2 rs2000 cosworth

    The issue with WCXM mountings and vibration isnt because the bushes are too soft, its because they are too hard, most use leaf spring solid rubber bushes, swapping them for poly makes the vibration worse as they insulate vibration to the chassis far less, in my experience its best toi source a softer shore A hardness bush. Make sure you use a strong axle too, i turned an english diff to gravel in 10 mins thinking it would handle YB torque.
    Last edited by Erikmex; 06-08-2019 at 10:55.

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    Re: Building a Mk2 rs2000 cosworth

    Quote Originally Posted by Paul Finn View Post
    What radiator intercooler package did you use I want to make to sit nicely behind Rs2000 Front And I’m wanting to use the bonnet catch How does this type of crank sensor fit on Cheers
    Mines n/a with carbs at the moment but I will be using the rad tech rad and intercooler package when I swap to turbo. You will have to trim most of the original radiator mounting frame but you can retain the original bonnet latch
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    Re: Building a Mk2 rs2000 cosworth

    Screaming 1300 mexico rep

    http://i26.photobucket.com/albums/c139/gsijoe/untitled-21.jpg

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