Astra V6 RWD conversion

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Thread: Astra V6 RWD conversion

  1. #76
    MIGClub Member IanPaskin's Avatar
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    Re: Astra V6 RWD conversion

    Only just spotted this thread, I started off mine as a RWD project, I was planning on adding in a cross member like Mk2 escorts, Talbot sunbeams ect this would be across the subframe and then run the rack on that,

    I changed my plans to 4wd before that stage so didn't go ahead with it,

    The problem I found is the chassis rails are to high and subframe to low to mount the engine from

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  3. #77
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    Re: Astra V6 RWD conversion

    anymore progress with this fizzy boy ?

  4. #78
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    Re: Astra mk4 1.6 to V6 conversion

    Well guys it has been too long!
    I am back to working on this damn car and i already have a headache!
    I am sorry for the lack of progress but i have been pretty ill past couple of years and am on the road to recovery so lets get this car sorted.

    At the moment i am still tryna work out the steering and have an idea but i need some advice.

    My plan is to use the original steering rack but it fouls the gearbox when engines in and the engine is as high as i can possibly get it.
    The steering arms have to run over the top of the wishbones and subframe which means i cant just lower the steering rack so i figured could i not just put couple inch welded on spacers onto the subrame mounting points to lower the frame with the steering rack and clear the gearbox altogether?
    or does this sound unstable?
    Any advice greatly appreciated...i will grab more pics this week.
    Thanks again guys

    From a very frustrated fizzy
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  6. #79
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    Re: Astra mk4 1.6 to V6 conversion

    is anyone able to help with question regarding getting spacers welded to the subframe to lower it?
    I will be going back out to car on sunday so any advice prehand would be greatly appreciated
    ___________________________________________

  7. #80
    MIG Regions Admin / South Central Regional Coordinator Benn's Avatar
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    Re: Astra V6 RWD conversion

    I cant see why that would be able issues. Lowering it down wont hurt anything as lots of cars get wisebones and arms lowered to give less dive under braking and bits.. You'll need longer bolts and such to fit it tho.

    I dare any of you to tell me you wouldn't let this upstanding young citizen slob on your knob like corn on the cob.

  8. #81
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    Re: Astra V6 RWD conversion

    okay perfect thank you...i just wanted a second opinion. I will just order up some bolts that length when i find out exactly what i need...summers here so hopefully i can get a move on
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  9. #82
    MIG Regions Admin / South Central Regional Coordinator Benn's Avatar
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    Re: Astra V6 RWD conversion

    Sounds good.

    I dare any of you to tell me you wouldn't let this upstanding young citizen slob on your knob like corn on the cob.

  10. #83
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    Re: Astra V6 RWD conversion

    Lowering the subframe will also lower the inner wishbone mounting points, which will further **** up the roll centres - don't know what Benn is going on about as it has negligible anti-dive affect?
    With all this fabrication work, you may be able to design fabricated wishbones that use a higher mounting point but that allow the 'rack tie rods to pass 'through' them?
    Don't forget to check the bump steer is still acceptable.
    NOTE, these are my thoughts and opinions, sometimes I'm wrong ;-)

  11. #84
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    Re: Astra V6 RWD conversion

    Hi Gordo,just so i understand here what you mean...if the whole frame with wishbones n all attached comes down then the wishbone mounting points would stay the same on the frame as they were i can only invision the suspension maybe changing due to the hub/suspension needing to come down too?
    I do like the idea of fabricated wishbone mounts to allow rack to pass through them! maybe a better option overall but i will still need to lower frame a bit for the actual steering rack to go under.
    I do also still have the omega rack but it fowls the legs on the subframe..i considered getting someone to make new subrame to fit around but i dont know if thats a good idea as i dont weld myself
    ___________________________________________

  12. #85
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    Re: Astra V6 RWD conversion

    Hi Fizz, I have done this to a mk1 astra with the omega engine. I've used ford sierra cosworth 4x4 front cross member and steering rack. Track control arms and compression struts are group A tarmac spec.
    The front cylinder on the engine is inline with the strut tops that's how far back I've put the engine inside the car and low down, even though the throttle bodies stick up through the bonnet a bit
    Swap the sump for the vectra v6 one or cavalier as this will give you more room for the rack cross member etc
    Put the anti roll bar across the front of the engine to
    Be careful moving suspension points about including the steering as this will severely alter the geometry even just by a couple of millimeters

  13. #86
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    Re: Astra V6 RWD conversion

    this just got a whole lot more complicated than i first thought.
    I have just looked at these crossmembers and i see its all inclusive with steering rack but how does that work with the knuckles/hubs/suspension etc like how does it all connect? do you have images maybe?
    I know i probably sound stupid right now but i cant see it in my head if ya know what i mean.
    I have both the omega sump and vectra sump to choose from.
    My head hurts
    ___________________________________________

  14. #87
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    Re: Astra V6 RWD conversion

    Vinci is doing something similar, have you had a good look at that thread?
    NOTE, these are my thoughts and opinions, sometimes I'm wrong ;-)

  15. #88
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    Re: Astra V6 RWD conversion

    no i haven't i will go hunt for it now...thank you gordo
    ___________________________________________

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