604 brakes and suspension
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  1. #1
    Fellow Frogger! aquinian's Avatar
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    604 brakes and suspension

    A few questions for somebody who knows about 604s compared to 504s and 505s, if you wouldn't mind. (Dave McBean, for example...?)

    Does anybody know if the ventilated (front) disks on a 604 are larger than the ones on a 505, and if so, will they bolt on to a 505 hub?

    Does anybody know how the rear anti-sway bar on a 604 compares with an SR one?

    Any other suspension differences between 604s, 504s and non-injected 505s?

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    Many thanks for any assistance provided!

    Regards,
    John Lane.
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  2. #2
    1000+ Posts Pugnut403's Avatar
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    Have you checked out Dave's website? It is full of that kind of info.
    As far as I know, the diameter of the front discs is the same.
    I also believe that the front springs are quite a bit heavier on a 604.
    Pugs Rule!

    403, now sold
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  3. #3
    Guru davemcbean's Avatar
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    John,

    604 discs are same diameter as 505 discs, but ventilated. 604 calipers are the same design as the Teves type 505 calipers, but wider to accomodate the ventilated discs, and the pads a a tiny bit larger. 604 discs and calipers bolt straight onto a 505 strut.

    The 604 rear sway bar is 19mm (505 GTI 18mm, GR 16mm). The 604 bar bolts straight on, once you grind a new flat spot for the brake compesator arm which is in a different spot.

    604 front springs are approximately the same rate as 505 GTI springs, but much taller.

    The 604 front sway bar is only 25mm (1mm smaller than 505 GR and 504, 2mm smaller than 505STI/GTI).

    I don't know what the rear spring rate is on the 604.

    Really as far as 505s go, the only useful things from a 604 are the front brakes and the rear swaybar.

    504s are a different matter, because 604 struts/arms and rear arms can be used to give them a wider track like the 505 has as standard.

    Dave

    <small>[ 03 June 2003, 08:16 AM: Message edited by: davemcbean ]</small>
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
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  4. #4
    Fellow Frogger! aquinian's Avatar
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    davemcbean:
    Really as far as 505s go, the only useful things from a 604 are the front brakes and the rear swaybar.
    A wealth of information, thank you!

    By the way, the 604 torque tube is a couple of inches longer than a 505 one. I suspect this will solve the engine locating issue, along with some fabricated extension plates for the engine mount.

    Regards,
    John Lane.
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

  5. #5
    Guru davemcbean's Avatar
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    By the way, the 604 torque tube is a couple of inches longer than a 505 one. I suspect this will solve the engine locating issue, along with some fabricated extension plates for the engine mount.

    Regards,
    John Lane.[/QB][/QUOTE]

    Top idea!!
    NZ Fleet
    1976 504 Ti
    1984 205 GT twin carb
    1991 205 SI 1.6GTI motor
    1994 106 Xsi
    1996 Mondeo V6
    Aus Fleet
    1955 203C
    1997 Civic Cxi (great allrounder- revy, flexible, nimble, comfortable , economical, simple and durable )

  6. #6
    Fellow Frogger! aquinian's Avatar
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    By the way, the 604 torque tube is a couple of inches longer than a 505 one. I suspect this will solve the engine locating issue, along with some fabricated extension plates for the engine mount.

    Regards,
    John Lane.
    davemcbean:
    Top idea!!
    Yes, I thought so. But Rob Cherry disagrees. Apparently he has tried everything. According to Rob, if you use a 604 torque tube the bell housing is too far forward and hits the power steering rack. !!! Oh well, he said that Bill Hamilton has his motor pushing on his air-con air box and it has been that way for years, with no ill effects, so it isn't the end of the world.

    Still, I'm going to do some measurements and see if the bell housing can be cut to make it fit. I like the idea of having some space behind the motor. Imagine changing a starter-motor with even less room than a 505 has already...

    Btw, I have the V6 almost ready to assemble now - have to order the gaskets, bearings, and rings. I'll try to borrow the digital camera again for the build process and post some shots of the thing as it goes together. I'm going to paint the rocker covers and air-cleaner yellow to match the body of the car, and all of the alloy is either brand new or properly cleaned, so it should be quite a sight!

    Cheers,
    John Lane.

    Edit: Formatting.

    <small>[ 04 June 2003, 12:11 AM: Message edited by: aquinian ]</small>
    Current: 406 Coupe, 504 Sedan

    Previous: 306XSi, 205GTi, 206Gti, 505 V6, 505 Wagon, 504 Sedan, 504 Wagon, 306Gti6, 306XT, 205Si, Citroen XM, Citroen Xantia

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