78 US to Euro bumper project. | FerrariChat

78 US to Euro bumper project.

Discussion in '308/328' started by teveo, Mar 18, 2009.

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  1. teveo

    teveo Formula Junior

    Oct 1, 2005
    403
    Norway
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    Trond Vidar
    #1 teveo, Mar 18, 2009
    Last edited by a moderator: Sep 7, 2017
    I thought I would add some experience while swapping out the heavyweight US bumpers for lightweight injection molded euro bumpers. I bought original bumpers from eurospares at more or less the same price as aftermarket fibreglass, they showed up last week and today I had some hours spare and decided to start the "project".

    Rear bumper
    I took off the US rear bumper, it is an easy job and is done in less than 30 minutes. Its a heavy piece though.
    Observations REAR bumpers: US bumper brackets will be fine, I do have to open the bolt holes approx 4 mm to make the Euro bumper slip on. The bolts in the Euro bumper is approx 76-78 mm (did not find my caliper) apart while the US bolts seem to be 70 mm apart.
    I test fitted and it looks great.. pix tomorrow. The rear bumper swap seem to be a 1-2 hour job to complete.

    Front bumper
    If I find the time I will take off the bumper tomorrow, I was hoping on fabricating a more complex offset bracket and not welding struts to the frame. It all depends on whether the US bumper/shock is sticking out too much or not. I suppose I have to get a Euro grille and install fog lights in the grill, there should be a few options I think. I'll get some pix and trial fit the stuff to get some ideas.


    Here's my car before the job starts, regular 78 GTS.
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  2. Nurburgringer

    Nurburgringer F1 World Champ

    Jan 3, 2009
    11,170
    Texass
    thanks for taking the time to share - this is high on my 'non-essential things to do' list for my '85GTS.

    cheers
    Kurt
     
  3. Johndahl

    Johndahl Karting

    Jan 31, 2008
    87
    Sacramento, CA
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    John
    #3 Johndahl, Mar 18, 2009
    Last edited: Mar 18, 2009
    I just did the front on my 85 308QV. We actually fabed some brackets using 2 tube sizes. The rear tube more or less was the same diameter as the original piston where it connects to the frame. We then welded an oval shaped plate to the top of that tube to offset the smaller dia tube which extended to the bumper brackets. The rectangular brackets were then welded to the smaller tube. This way no changes to the frame were made.

    That's great news about the rear. Easy next project :) maybe.....

    Also....I think the earlier 308 (2V) grill has 3 horizontal bars across the entire opening (top one is shorter). F-chatter Newman can fabricate these and they have come out great. Do a search and you will come up with some pictures. This would be true to the year of the car and save the addition of the passing lights.

    If that's not a concern and you want that look, then the Euro QV grill is the one with the driving lights on the ends (4 horizontal bars). I am currently getting ready to fab some for my car and some other F-chatters. PM me if you are interested in getting something like this.
     
  4. teveo

    teveo Formula Junior

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    #4 teveo, Mar 19, 2009
    Last edited by a moderator: Sep 7, 2017
    Here are two pix from rear bumper.
    First one showing the bumper free GTS, the holes in the brackets are visible and had those been 6 mm more apart the euro bumper would have slipped right on. I will use the dremel tool to open the outer perimeter of the brackets, 3-4 mm each side.

    The second picture show the euro bumper hand held more or less in the correct position, a joy to the eye as well as the dry weight.
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  5. cavallo_nero

    cavallo_nero Formula 3

    Nov 3, 2003
    1,707
    colorado
    Full Name:
    Giovanni Pasquale
    I have the correct front euro bracket mounts and am not using them if anyone wants to buy them - pm me.
     
  6. redline76

    redline76 Formula Junior

    Feb 26, 2008
    355
    Venice, CA
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    Warren V
    Hello, this is the F-chat police calling, division 308:

    It has come to our attention that your brake lights and turn signal lights have been reinstalled incorrectly. Please swap the assemblies immediately so the turn signal lenses are on the outside and we will proceed as if nothing ever happened. Otherwise, prepare to face the wrath of untold millions who have nothing better to do than to point this out every time you post a picture of your 308's ass-end.

    Cordially yours,

    -w-

    :)
     
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  7. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
    79,340
    Houston, Texas
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    Bubba
    LOL, on the tailights.......

    I still need a front USA bumper, if I can find one closer than Scandinavia!
    You are correct you will need a grill too to avoid some gaps below the new unit, in the bars.

    I have pending deal to get one there.......

    Be careful once the new ones are on, with the tailpipe tips .........looking good!
     
  8. teveo

    teveo Formula Junior

    Oct 1, 2005
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    Thanks .. for the reason why they were swapped you have to talk to the californian I bought the car from.
    .. i wasn't even aware they were swapped until now (..and it is my 3'd 308).. :)
     
  9. BigTex

    BigTex Seven Time F1 World Champ
    Owner Rossa Subscribed

    Dec 6, 2002
    79,340
    Houston, Texas
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    Bubba
    Usually the painter gets it wrong on a respray...there's a diagram in the Owner's Manual showing correct placement, amber outboard of red....

    That's a really nice color on your car.......great pics!!

    Alan
     
  10. redline76

    redline76 Formula Junior

    Feb 26, 2008
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    Warren V
    Almost always because of repaint as Tex pointed out. They're not much fun to get out, so I can't see why anyone would do it for looks alone.
     
  11. tvine

    tvine Formula Junior

    Jul 19, 2006
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    Tom Vine
    #11 tvine, Mar 21, 2009
    Last edited: Mar 21, 2009
    I did this swap with factory front and rear bumber and euro grill about 5 years ago. I used stock US rear brackets as you did opening up the holes. I fabricated new front brackets that used the front two stock mounting bolts with slotted holes in the bracket for easier installation and adjustment. Something I learned was to drill bumper to bracket holes after fit-up. I have a scale drawing of the brackets if you are interested. I used wedge shaped shims to get the angle of the front bumper correct.

    By the way, you will want to fabricate a heat shield under the Euro rear bumper to keep from melting it with the US exhaust under it. Simple flashing works pretty well. I attached mine with the mounting bolts for the louvered valance, sandwiched between the valance and the body.
     
  12. Johndahl

    Johndahl Karting

    Jan 31, 2008
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    John
    Tom, Could you post some pics of the heat shield? I would be interested in your drawing also if ok. In the middle of the same project (minus rear bumper - on the books soon though).
     
  13. teveo

    teveo Formula Junior

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    .. yes Tom, please add your thoughts/drawings. It would be nice to have, will try to write up a "lessons learned" report when the job is done.
     
  14. teveo

    teveo Formula Junior

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    #14 teveo, Apr 4, 2009
    Last edited by a moderator: Sep 7, 2017
    Today I removed the front bumper and bumper shocks. This also went smooth.

    The distance between the front frame legs and the center points on the bumper both are 700 mm, this means a simple T-bracket system can be made. I will make one bracket for the frame that mounts to a bracket that goes on the bumper .. I am going to make a figure of the setup and post it later on.

    To get the bumper lined up I have to move the fans and the horn 10-15 mm back as well, they slightly touch. This is not a problem as I have lots of room when I remove the AC condenser.

    Here are some pics showing my plans.. better figures later. I have a question to anyone with original euro bumper car out there.. how much should the bumper stick out from the body? Would you for instance have the measurement pointed out in one of the pix? I made a measure that seem to be 100 mm from the mounting bolts for the us shocks to the mount on the bumper, but i am not sure that is the correct distance.
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  15. teveo

    teveo Formula Junior

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    #15 teveo, Apr 4, 2009
    Last edited by a moderator: Sep 7, 2017
  16. detroit

    detroit Karting

    Jun 20, 2006
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    Eric
    #16 detroit, Apr 4, 2009
    Last edited by a moderator: Sep 7, 2017
    I'm in the process of a similar modification to my car. I say similar because I'm using the fiberglass repro bumpers that Jim Carpenter peddles, which I believe are the same ones as Nick's Forza, but don't quote me. Anyway, I just got the brackets that I fabricated back from the anodizer. The first picture is of a bracket for the front bumper. They are perhaps a bit more involved than some simple welded-up jobbies, but they're adjustable in all three planes. It makes aligning the bumper a whole lot easier. The second picture is of the brackets required to hang the rear bumper. For some odd reason, the mounting face of the bumper wasn't manufactured square to the flange on the bumper shocks. It's at about a twenty degree angle. These brackets screw to the bumper capturing a couple of m10 bolts, much the same as the factory U.S. set up. Anyone considering buying a set of these bumpers should know that they'll need to do something similar. It was only a bit of an inconvienience for me, but I have a small milling machine at home. I'm not sure what someone else might do...
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  17. Johndahl

    Johndahl Karting

    Jan 31, 2008
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    Very nice job Eric. Not just a milling maching but someone that obviously knows how to use it :)


     
  18. teveo

    teveo Formula Junior

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    "detroit", very nice machining! It seems like the fiberglass repros use the same bolt pattern as US cars, so they dont fit the front Euro bumper. The euro bumper has a slightly more narrow bolt pattern and the center in the mounting area between of the bolts are more or less an extension of the chassi legs (700 mm apart)
    I am going to double check the rear bumper whether I need to install spacers, I have not gotten around to bolting it in.

    The rear bumper has more or less the same pattern and there's two options in the rear
    - make new brackets
    - open the original brackets about 3 mm both holes, towards the outer edges.

    I may try to make some brackets during easter holidays, 4 mm steel welded up t-brackets. They are easy to form.
     
  19. detroit

    detroit Karting

    Jun 20, 2006
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    Eric
    Thanks, boys.

    Teveo,

    That's a correct assessment regarding the bolt pattern. These bumpers actually came with inserts for both Euro and US fastener locations, though the US jobbies were installed a bit willy nilly. They're centers aren't the same right to left. My front brackets are, in fact, assymetrical.

    I don't like it either...
     
  20. detroit

    detroit Karting

    Jun 20, 2006
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    Eric
    That should have been, "their centers". Pardon may grammatical error.
     
  21. Spitfire

    Spitfire Formula 3

    Nov 16, 2006
    1,602
    teveo, I'm following your thread with interest as I plan to do the same to my car. If you don't mind me asking, where did you buy your bumpers? They look nice.

    Detroit, similar question for you ... which company is Jim Carpenter with? How can he be contacted for pricing?

    Thanks.
     
  22. Johndahl

    Johndahl Karting

    Jan 31, 2008
    87
    Sacramento, CA
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    John
    Got mine from Rennspeed on EBay. Not a bad price. They are not "ready to install". Still needs paint or in my case did a rubberized paint so that it matched the look of the back bumper.



     
  23. detroit

    detroit Karting

    Jun 20, 2006
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    Eric
    Newby,

    I believe that Nick's Forza sells the same bumpers as the ones I have. I'd suggest you go through him. If you do a search on Jim Carpenter, you'll come across a whole lot of negative feedback. I've met the man. He's a nice enough guy, but I have to say that neither of the two dealings I've had with him have gone as smoothly as I'd have liked. I think I can track down his number if you strike out with Nick, and can't find an alternate source. Let me know...
     
  24. teveo

    teveo Formula Junior

    Oct 1, 2005
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    My bumpers are injection molded OEM's from Eurospares in UK.
    I hope to have the front and rear bumper mounted in the easter weekend, I have to make the front bracket and a heat shield for the rear bumper first. The US grille is no big deal yet, I will change it later on.
     
  25. teveo

    teveo Formula Junior

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    #25 teveo, Apr 11, 2009
    Last edited by a moderator: Sep 7, 2017
    Ok, rear bumper ready for install. I had to open the old brackets alot but now the bumper slips on nicely.

    I have a question about the heat screening, I will make a heat screen or flat/louvered panel to protect the rear bumper... but where should it be placed?
    - In the rectangular area under/between the brackets (as seen in the pix)?

    I was also thinking about installing a heat screen behind and below bumper just like the US bumper has.
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