rear beam from an Si on a GTi...how can i tell?
  • Help
Results 1 to 13 of 13
  1. #1
    1000+ Posts
    Join Date
    Aug 2001
    Location
    brisbane
    Posts
    2,924

    Default rear beam from an Si on a GTi...how can i tell?

    Thinking of purchasing this 205 GTi [yes, i know that will make 4 LOL ] and a little birdie tells me that this particular car has a rear beam from an standard 205 Si on it.

    Is there any way i can tell just by looking at it?

    Advertisement
    jr20516v

    Now:
    Exige SC [modded], 205 Si. 205 GTi , Megane R26 LY , Megane 225 [modded ]


    Previous: Honda EP3 Supercharged , 205 x34 [ including MI16 TURBO, 8v TURBO, CTI, 16V+TB's, 8V+TB's,] Fiat X1-9 X3, Beta coupes x5, Lancia Gamma coupe, GTI-R, Corvette C4, Fiero x5, Alpine GTA turbo, r5 GTT Dimma, 2cv ripple nose, Lotus Elise, 205 Dimma TT, Cliosport 172.x2, Clio rs 200

  2. #2
    1000+ Posts CEyssens's Avatar
    Join Date
    Jan 2016
    Location
    Berwick VIC AUS
    Posts
    1,056

    Default rear beam from an Si on a GTi...how can i tell?

    For starters the GTI beam has go fast yellow paint on the main tube and the Si is black.
    I think the main tube is a different diameter, someone else may chime in or I can measure them I have both beams here. (My Si beam in little silver also has Si written on the main tube, a dead giveaway!)
    The torsion bars should be different but they could have been swapped over.

  3. #3
    1000+ Posts
    Join Date
    Aug 2001
    Location
    brisbane
    Posts
    2,924

    Default

    Ironically all 3 of my GTi's are all black beams.
    jr20516v

    Now:
    Exige SC [modded], 205 Si. 205 GTi , Megane R26 LY , Megane 225 [modded ]


    Previous: Honda EP3 Supercharged , 205 x34 [ including MI16 TURBO, 8v TURBO, CTI, 16V+TB's, 8V+TB's,] Fiat X1-9 X3, Beta coupes x5, Lancia Gamma coupe, GTI-R, Corvette C4, Fiero x5, Alpine GTA turbo, r5 GTT Dimma, 2cv ripple nose, Lotus Elise, 205 Dimma TT, Cliosport 172.x2, Clio rs 200

  4. #4
    1000+ Posts CEyssens's Avatar
    Join Date
    Jan 2016
    Location
    Berwick VIC AUS
    Posts
    1,056

    Default

    Quote Originally Posted by jr20516v View Post
    Ironically all 3 of my GTi's are all black beams.
    They could have been painted black on rebuild or I could be off track with all GTI beams being yellow (being a young player on these).
    I'll see if I can get a few minutes to measure them tonight.

  5. #5
    Member
    Join Date
    Jun 2016
    Location
    Gold Coast
    Posts
    105

    Default

    My 87 S1 has a yellow-painted beam. Looks like it's never been off so pretty sure it's original - has black ARBs. Also have one here from a 306 XSi. That's yellow, too, but with red ARBs.
    Looks like they weren't short of tins of paint back in the day...


    Sent from my iPad using Tapatalk

  6. #6
    1000+ Posts
    Join Date
    Aug 2001
    Location
    brisbane
    Posts
    2,924

    Default

    I think over time these yellow ones are painted [usually black ] to spruce them up. Every time i get a new 205 one of the first things i do is remove the spare wheel....scrub like mad that area from the beam backwards....when dry i usually paint the area with a spray can of underbody paint.
    Maybe somebody else had the same fetish with my 3 babes.
    jr20516v

    Now:
    Exige SC [modded], 205 Si. 205 GTi , Megane R26 LY , Megane 225 [modded ]


    Previous: Honda EP3 Supercharged , 205 x34 [ including MI16 TURBO, 8v TURBO, CTI, 16V+TB's, 8V+TB's,] Fiat X1-9 X3, Beta coupes x5, Lancia Gamma coupe, GTI-R, Corvette C4, Fiero x5, Alpine GTA turbo, r5 GTT Dimma, 2cv ripple nose, Lotus Elise, 205 Dimma TT, Cliosport 172.x2, Clio rs 200

  7. #7
    1000+ Posts CEyssens's Avatar
    Join Date
    Jan 2016
    Location
    Berwick VIC AUS
    Posts
    1,056

    Default

    Possibly I suppose you'd be able to eyeball it to see if it's been widely sprayed with black or painted when out being rebuilt.

    I measured the diameter of my beam main tubes in the widest middle section (approx only as its dark and under the car)
    The yellow S1 GTI beams are 64mm
    The Si beam is 59-60mm

  8. #8
    1000+ Posts
    Join Date
    Aug 2001
    Location
    brisbane
    Posts
    2,924

    Default

    Good to know.... i will get a measuring ! Thx for the heads up.
    jr20516v

    Now:
    Exige SC [modded], 205 Si. 205 GTi , Megane R26 LY , Megane 225 [modded ]


    Previous: Honda EP3 Supercharged , 205 x34 [ including MI16 TURBO, 8v TURBO, CTI, 16V+TB's, 8V+TB's,] Fiat X1-9 X3, Beta coupes x5, Lancia Gamma coupe, GTI-R, Corvette C4, Fiero x5, Alpine GTA turbo, r5 GTT Dimma, 2cv ripple nose, Lotus Elise, 205 Dimma TT, Cliosport 172.x2, Clio rs 200

  9. #9
    1000+ Posts CEyssens's Avatar
    Join Date
    Jan 2016
    Location
    Berwick VIC AUS
    Posts
    1,056

    Default

    Curious to hear what the results are. Measure the torsion bars while you're under there.

  10. #10
    1000+ Posts
    Join Date
    Jun 2013
    Location
    Sydney
    Posts
    9,265

    Default

    My old copy of the French RTA manual says this rear beam from an Si on a GTi...how can i tell?-screenshot-2.jpg

  11. #11
    1000+ Posts
    Join Date
    Aug 2001
    Location
    brisbane
    Posts
    2,924

    Default

    Cheers Seasink. I guess the French call our GTi a GT.........and by that it says the torsion bars are only .4 of a difference from the cooking model.....am i on the wrong track here ?
    jr20516v

    Now:
    Exige SC [modded], 205 Si. 205 GTi , Megane R26 LY , Megane 225 [modded ]


    Previous: Honda EP3 Supercharged , 205 x34 [ including MI16 TURBO, 8v TURBO, CTI, 16V+TB's, 8V+TB's,] Fiat X1-9 X3, Beta coupes x5, Lancia Gamma coupe, GTI-R, Corvette C4, Fiero x5, Alpine GTA turbo, r5 GTT Dimma, 2cv ripple nose, Lotus Elise, 205 Dimma TT, Cliosport 172.x2, Clio rs 200

  12. #12
    1000+ Posts
    Join Date
    Jun 2013
    Location
    Sydney
    Posts
    9,265

    Default

    I can't comment helpfully - it's just an old yellowed manual I have, for French models. I hoped it would be of interest.

    There is an article (sorry if you know) at Rear Beam Refurbishment Guide - Brakes, Suspension & Steering - Articles - Articles - Home Page

  13. #13
    Fellow Frogger! blahblah's Avatar
    Join Date
    Aug 2004
    Location
    Perth
    Posts
    315

    Default

    Hi Seasink,

    A bit off topic, but those old French RTA manuals have a lot of useful info in them and way more detail than Haynes will ever provide... Do you happen to have a RTA Peugeot 306 manual? I'm looking for more detail on the suspension specs for my 306 2.0 XT vs XSI vs GTI 6 - so I can hunt for some XSI/GTI 6 stock torsion bars/ARBs front springs to perk mine up a bit... Otherwise will look on fleabay for an RTA manual...

    Cheers, Chris.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •