help me debug why my 348 targa top isn't flush | FerrariChat

help me debug why my 348 targa top isn't flush

Discussion in '348/355' started by kimbo305, Sep 3, 2016.

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  1. kimbo305

    kimbo305 Rookie

    Mar 12, 2011
    40
    I got my 348 with a painted aftermarket targa top. It didn't. line up that well at the front.
    After some searching, I finally found an OEM top. To my surprise, though, the OEM top still isn't a perfect fit. Here's pictures of other 348s with the fitment I expected to see:
    http://burbbble.com/images/topfives/304/348-web.jpg
    https://upload.wikimedia.org/wikipedia/commons/a/a7/Ferrari_348_ts,_pre-facelift_model.jpg
    http://www.sportscarbible.com/_images/ferrari/ferrari-348-tb-ts-spider/ferrari-348-tb-ts-spider-xl/ferrari-348-ts-tb-spider-xp1180930scb.jpg
    https://thumbs.dreamstime.com/z/red-ferrari-ts-sale-monaco-la-condamine-march-parked-front-car-dealer-68548615.jpg

    And here's how mine currently sits:
    [​IMG]
    [​IMG]

    My shop's theory:
    - the rubber seal along the windscreen is shifted down and keeping the top from seating all the way in

    I wondered if it could be the car's frame sagging enough that the windscreen is tipped back by a couple mm?

    Have any of you encountered this?
     
  2. Nosevi

    Nosevi Formula 3

    Jul 8, 2011
    1,990
    Lincoln
    Full Name:
    Pete
    I doubt your windscreen has sagged (that wouldn't make any difference anyway) or the shop is right. Under the part on the inderside of the windscreen where the clamp bolts in there are 'spacers' to bring this away from the windscreen. Adding a spacer lowers the roof line along the top of the windscreen. Over time the clamp can have a bit of give or the spacers and rubber of the clamp can compress. Adding a spacer or two each side can realign the roof line. Think the part number is 63238700.

    Just be sure that when you try to clamp the roof down after adding a spacer you push the roof down from the top then clamp it in, don't just have the clamp pull the roof down or the clamp can give way if it's too tight.
     
  3. dapper

    dapper Formula Junior

    Nov 10, 2003
    711
    Bristol, UK
    Full Name:
    Dave
    #3 dapper, Sep 4, 2016
    Last edited: Sep 4, 2016
    The 's' roof panels can take a bit of manipulation to get right, on mine the side windows will wind up ever so slightly too high, so I need to adjust their stop point when I get around to it, could be the case with yours, or at least contributory?

    That last pic (thumbsdreamstime) of examples of correct roof line.....his roof may be right but bugs me how his wheels are fitted wrong, its quite obvious when its only the front left v right, or rears left v right, that are wrong.
     
  4. 4rePhill

    4rePhill F1 Veteran

    Oct 18, 2009
    8,252
    Worcester, England
    Full Name:
    Phill J
    It's obvious to you because you are aware that the factory 348 wheels are directional, and that there is a "correct" side for the wheels to be fitted to, but most non-owners (and quite a few owners come to that), are not aware of that fact.

    At the end of the day, it's only a cosmetic issue that makes absolutely no difference to how the car drives, and the vast majority of people simply wouldn't care about it.
     
  5. Nosevi

    Nosevi Formula 3

    Jul 8, 2011
    1,990
    Lincoln
    Full Name:
    Pete
    Are you sure? Thought the correct way puts more air onto the brake discs. You need to look at the back of an actual wheel to see what I mean.
     
  6. dapper

    dapper Formula Junior

    Nov 10, 2003
    711
    Bristol, UK
    Full Name:
    Dave
    its ok Pete, Phill just has an issue with me I think, its not the first time he's nit picked, its often why I don't bother writing in the forum, I know he'll do it, shame but there it is!

    Having said that I still don't agree with Phill's point but giving him benefit of doubt maybe he didn't get my reason for this occasion being so obvious. If you look at the image I discussed, I'm not picking it up because of the more common but quite understandable incorrect fit of all four wheels. Rather I'm mentioning it as being obvious in this case because just a front pair or back pair are wrongly transposed side to side, and NOT BOTH.
     
  7. Nosevi

    Nosevi Formula 3

    Jul 8, 2011
    1,990
    Lincoln
    Full Name:
    Pete
    Hi there. Do think I'm right though. If you have standard wheels you'll see that effectively you have angled 'blades' for the 'spokes' of the star. Rotate these in the correct direction and it pushes a little air from the outer surface of the wheel inwards. Rotate it the other way and it doesn't. Probably doesn't make a great deal of difference but every little helps :)

    To me, when I see 348 wheels on the wrong way, it says whoever is looking after the car (beit indie, main dealer or other) isn't totally familiar with the model. I may be being unfair but it's the impression I get.
     
  8. kimbo305

    kimbo305 Rookie

    Mar 12, 2011
    40
    Awesome, I'll let the shop know.

    Good tip. I've been reading about how the paired steel plates that make up the clamp can be overtaxed.
     
  9. kimbo305

    kimbo305 Rookie

    Mar 12, 2011
    40
    When I went to install the shims, I found that the left side already had one. Hmm. With both shims added, the front edge definitely sits lower down, though not perfectly flush. I think it's good enough -- I'd rather not put even more tension on the latch. The major source of leaks would be the front corners of the top, where all the rubber seals don't meet well, and the rubber trim over the windows. The windows don't quite come up under the trim. I think it'd be fine in a very light rain, but wouldn't count on it for more.
     
  10. Nosevi

    Nosevi Formula 3

    Jul 8, 2011
    1,990
    Lincoln
    Full Name:
    Pete
    I actually have 3 roofs - a colour coded 348 roof, an original black plastic 355 roof but have added 348 seals and a foldable targa for the parcel shelf so I don't need to keep a targa behind the seats if it threatens to be sunny here in the UK. 348 roof leaks quite badly, 355 is much better (although I have no idea why, maybe just newer seals?), foldable is also pretty much dry. Anyway, new roof seals could help or maybe just 'feed' the rubber with Swisswax 'seal fed' or equivalent. Vasaline would probably work just as well tbh.
     
  11. kimbo305

    kimbo305 Rookie

    Mar 12, 2011
    40
    I've dressed the top of the windscreen seal with Shinetsu grease, and the one application some months back has stayed fresh.
     
  12. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
    Full Name:
    The Bad Guy
    I got my top to sit tighter by removing adjustment shims from under the latches.
     
  13. IAmNotCasey

    IAmNotCasey Formula Junior

    Jul 9, 2014
    290
    Parker, Colorado
    Full Name:
    Casey Duncan
    Mine fit wonky when I got my car as well. My solution was to take apart the latches and fix the excess play in them. The rubber on the latch "feet" was degrading and worn as well so I put a couple of layers of heat shrink tubing around them to thicken them up. Clamps down perfectly now.
     
  14. kimbo305

    kimbo305 Rookie

    Mar 12, 2011
    40
    The way my latch travel seems to work, the last cm of lever throw to fully closed seems to cause the lever to bottom out and then open up ever so slightly. That makes sense to me, that you wouldn't want max tension at the end of the lever closure. This way, the lever opening up a tiny bit would meet resistance in the form of the latch getting tighter.

    Since this is my new top, I took a look at both set of latches I had. Both are in decent shape except for some paint scratched off. The rubber tips are certainly fine.
     

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