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moorepower

Joined: 21 Dec 2006 Posts: 214 Location: Raleigh, North Carolina, USA
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Posted: Thu Dec 03, 2009 7:54 am Post subject: Front Euro Bumper Alignment |
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I just picked up a set of front and rear euro bumpers (thanks ic932), and the front is not lining up exactly right. It's off toward the passenger side by about 10mm or so, an there's also about a 15mm gap between the bumper and fender on the passenger side. The gap is about 5mm on the driver side. See pictures.
I figure I can move the bumper around a bit by enlarging the mounting holes and lining it up where I want it before tightening the mount bolts. Is it normal to have to fit a bumper to the car like this, or has something been knocked out of whack on my front end? I'd hate to ruin a perfectly good euro bumper by trying to make it fit a boogered up car.
FWIW, the driver side fender has been repainted at some point, so the car has been in some sort of accident in the past.
 _________________ Dan.
'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways, 931 header/valance panels
'81 924 Weissach with dual Weber carbs |
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emoore924
Joined: 13 Apr 2004 Posts: 1708
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Posted: Thu Dec 03, 2009 8:12 am Post subject: |
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10mm? That's a bit. And no, I don't think its normal to have to move the bolt holes to get the bumper to fit. I can't see the pics from here but it does sound like something has moved in the front end.
Take a look at the bumper you took off. Is it modified in any way? Compare it to the euro bumper you have. What are the differences? One would think it would have had to been "adjusted" to fit as well. |
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moorepower

Joined: 21 Dec 2006 Posts: 214 Location: Raleigh, North Carolina, USA
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Posted: Thu Dec 03, 2009 8:21 am Post subject: |
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The bumper I took off hasn't been modified, but the gaps around a US bumper are so big to begin with, I don't think I would have noticed a 10mm difference.
Actually, the US bumper shocks have the mounting hole elongated side-to-side, so they could have compensated for the off-centerness. _________________ Dan.
'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways, 931 header/valance panels
'81 924 Weissach with dual Weber carbs |
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JayZzzz4

Joined: 23 Sep 2008 Posts: 432 Location: Milwaukee, WI USA
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Posted: Thu Dec 03, 2009 9:59 am Post subject: |
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MMmm odd, I think the only thing you can do is to mod the euro bumper to fit right. Changing/fixing the fenders & front valance would be much harder to do than the bumper. One more thing, is your bumper springs been punctured? Mine are, so I can pull them in and out about 3-4in, and if one side is pulled out farther then the other , it really noticeable...but I don't think that's the case for you. _________________ White 1987 Porsche 924S manual |
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emoore924
Joined: 13 Apr 2004 Posts: 1708
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Posted: Thu Dec 03, 2009 11:14 am Post subject: |
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| Quote: | | the US bumper shocks have the mounting hole elongated side-to-side, so they could have compensated for the off-centerness |
Well there's your answer. The front is a bit dekiltered and the PO compensated by hogging out the holes. And now that I can see the pics, that first one does show the misalignment.
If it was me, I'd hog out the holes in the bumper shocks, or create a little mounting plate to bolt them to that let you move the bumper over, rather than drilling new holes in the bumper or something. |
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ideola

Joined: 01 Oct 2004 Posts: 10369 Location: Plymouth MI
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Posted: Thu Dec 03, 2009 3:13 pm Post subject: |
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Any chance the euro mount brackets are orientation-specific or asymmetrical one side to the other??? _________________ ideola's garage
Unique Products, Used Parts, Group Buys & Downloads for the Porsche 924, 944 and 928
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RC

Joined: 25 Mar 2007 Posts: 2143 Location: Coffs Harbour, Australia
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Posted: Thu Dec 03, 2009 5:22 pm Post subject: |
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| ideola wrote: | | Any chance the euro mount brackets are orientation-specific or asymmetrical one side to the other??? |
No. Well not as they came from Porsche anyway.
Sounds like emoore924 has the answer. |
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Vince Ponz

Joined: 02 Nov 2002 Posts: 3576 Location: New York, NY
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Posted: Fri Dec 04, 2009 5:26 am Post subject: |
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I have a lot of experience with euro bumpers. Don/t touch the bumper.
Look at the mounts [twisted metal] and see if they are slightly askew. Bend them straight. Lay them on a table to see which ones are off.
You wouldn't break them.
The only problem I had with these bumpers was that they were too long for a 944 front setup. I took an inch off ea side over the fog lights. Fits fine now. Lots of work though. I attached the cut off ends perfectly and fiberglassed front and back.. _________________ "Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock |
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Rich H
Joined: 10 Jun 2007 Posts: 2570 Location: Preston, Lancs, UK
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Posted: Fri Dec 04, 2009 6:22 am Post subject: |
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As above bend the brackets to fit - the brackets are cheap  _________________ 1994 Lotus Esprit S4 - Work in progress...
1980 Porsche 924 S2 DITC Turbo - Original spec
1978 Homo-Sapiens - Tired spec
1953 Landrover S1 - Pensioner Spec |
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RC

Joined: 25 Mar 2007 Posts: 2143 Location: Coffs Harbour, Australia
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Posted: Fri Dec 04, 2009 8:05 am Post subject: |
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| Rich H wrote: | As above bend the brackets to fit - the brackets are cheap  |
Maybe used ones in UK but IMO they`re definitely NOT cheap new. IIRC $70 for a flimsy bit of pressed metal. As they`re not used in US they fetch a good price on ebay. So list em on US ebay if you have spares.
Figured moorepower is using a modded US bumper shock to mount to. With the Euro ones the chassis mounting holes can`t be filed elongated much due to bolt head interference. They can be bent fairly easily though. However they have bugger all in way of adjustment even on original ROW cars. If you want to align the bumper evenly with near perfect gaps it takes a lot of work or custom made slotted brackets. BTDT. |
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Vince Ponz

Joined: 02 Nov 2002 Posts: 3576 Location: New York, NY
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Posted: Fri Dec 04, 2009 8:17 am Post subject: |
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First of all do you have the US mounts. You can cut them and weld in collapsed in order to have the euro look. [closer to the body]
If you do not have the US mounts get a set of euro mounts which are much thinner and can be bent easily. I have a set but am keeping them in order to sell my euro bumper. If you have the euro mounts place them on a table to see if they are slanted. Correct slant.
Have you checked for front end damage. You might be able to bend the area where the mounts go slightly to fit.
Let me know. PM if you want with phone number and I will call you or you can call me. _________________ "Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock |
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moorepower

Joined: 21 Dec 2006 Posts: 214 Location: Raleigh, North Carolina, USA
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Posted: Fri Dec 04, 2009 8:18 am Post subject: |
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Well, it stopped raining today, so I had a better chance to check things out.
The front end has definitely been knocked out of whack. The lower valance mounts have been pushed over about a half inch, and I just noticed the hydraulic bumper shocks that I pulled off with the US bumper are different lengths. I guess when they "fixed" the damage they had to partially compress one of the shocks to make the bumper look even.
I don't know if I'll be able to make the euro front bumper look right. I can move the mounts around to center it fine, but I don't know how to adjust the depth where it meets the fenders. I guess I'll work on getting the rear bumper painted and mounted up (it actually looks right ), and then I'll figure out what I'm going to do with the front.
Anybody want to buy a euro bumper? Actually, maybe I should keep the bumper and sell the car.  _________________ Dan.
'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways, 931 header/valance panels
'81 924 Weissach with dual Weber carbs |
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moorepower

Joined: 21 Dec 2006 Posts: 214 Location: Raleigh, North Carolina, USA
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Posted: Fri Dec 04, 2009 8:23 am Post subject: |
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I did get the pressed steel euro mounts with the bumpers, and they are brand new. I even took the mounts from the rear bumper, which fits fine, and tried them on the front. Same situation. _________________ Dan.
'88 924S-LE (Luddite Edition)
Manual steering, manual sunroof, manual windows, AC delete, cruise delete, M030 Konis, 25.5mm torsions, 26.8/20 sways, 931 header/valance panels
'81 924 Weissach with dual Weber carbs |
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Ozzie

Joined: 12 Mar 2005 Posts: 3777 Location: Townsville, Qld. Australia
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Posted: Mon Dec 07, 2009 6:20 pm Post subject: |
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Bolt the mounts to the body and use a FBH to make the mounts move to the correct position.
Up/down left/ right no problem.
Been pushed in - use a spacer.
Mine had to be touched up this way. Called percusssive maintenance. _________________ Porsche 924 1984 (UK import) NA
Its AUTO and its BLACK
Montego Black on black/red
Engineer of Electro/Mechanical Systems Maintenance |
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Fifty50Plus

Joined: 28 Feb 2008 Posts: 350 Location: Washington DC area
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Posted: Tue Dec 08, 2009 4:14 am Post subject: |
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Dan,
Here in America (East Coast) we refer to Ozzie's calibration tool as a BFH.
Chuck _________________ 1979 924 NA soon to be racecar
1987 190E 2.6 Benz race car - for sale
1972 911 E race car - for sale
1980 911SC garage queen
1962 356 Notchback Coupe co-garage queen |
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