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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Thu Dec 06, 2018 9:05 pm    Post subject: More chassis legs Reply with quote

A few months back whilst fitting a new exhaust I thought it would be a good idea to check the chassis legs after seeing others on here.
At nearly 159k miles and 25 years old I was expecting it to be bad Sad

So the strip down began...
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Thu Dec 06, 2018 9:31 pm    Post subject: Reply with quote

First impressions weren't too bad as it's all heat shields but on closer inspection I could see the wing plates were a bit crusty. A prod with a screwdriver revealed a hole Surprised

Removing the bumper beam I could now see inside the chassis legs nooo
The Left hand chassis leg was in a much worse condition inside than the right one!
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Thu Dec 06, 2018 9:55 pm    Post subject: Reply with quote

Time to remove the bumper tubes, heat shields and wing plates. Even spraying releasing oil on the fixings I still sheared a few studs In the process.
This was hiding under the wing plates nooo
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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Endoman
Suzuka


Joined: 11 Apr 2011
Posts: 1190
Location: Bolton U.K.


PostPosted: Thu Dec 06, 2018 11:30 pm    Post subject: Reply with quote

Looks like we will all have this problem to some degree. Interesting that my left was worse than the right as well. I had stainless studs welded into the repair panel, 2 of the originals snapped. I'll be using a special stainless anti seize with stainless nuts.
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Porsche 993 Coupe 9m RS Replica
 
  
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decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1242
Location: Spain


PostPosted: Fri Dec 07, 2018 7:32 am    Post subject: Reply with quote

My goodness what a difference running a car without subjecting it to salt and grit on the UK roads makes. Mine has never seen the stuff... thank god. Thumb

ATB Smile
_________________
1995 993 C2 Cab TipS in Guards Red
 



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NIBrown
Nürburgring


Joined: 10 Oct 2010
Posts: 406
Location: South Wales


PostPosted: Fri Dec 07, 2018 8:19 am    Post subject: Reply with quote

mashby wrote:
First impressions weren't too bad as it's all heat shields but on closer inspection I could see the wing plates were a bit crusty. A prod with a screwdriver revealed a hole Surprised

Removing the bumper beam I could now see inside the chassis legs nooo
The Left hand chassis leg was in a much worse condition inside than the right one!


Ouch, that looks a bit nasty Surprised I'm sure they will be like new once repaired.
I was a lot luckier with mine a month ago, perhaps a sheltered life has helped them.
Keep up the good work and post regular updates Thumb

There are some good products out there for rust prevention once completed.
I used Bilt Hamber Electrox 93% zinc primer before the top coats and sprayed with about 6 coats of Dynax S50 to all plates and in the cavities once all work completed.
Looks like it will last forever.

Good luck Thumb
_________________
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1204
Location: Preston - Lancs


PostPosted: Fri Dec 07, 2018 9:09 am    Post subject: Reply with quote

yeh luck of the draw, this is quite a bad case.....you would expect nearside to come worse off in the rot battle...most are in my experience. If you live near the coast that is likely to affect things.......however mileage seems not to be an indicator of the likely dreaded..

you would have thought a bit of seam sealer around the edge of the plate at factory would prevent all this....I guess Porsche don't build cars with an eye on ownership 25 yrs after sale Smile

Trev
 
  
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pierrebear
Monza


Joined: 27 Sep 2017
Posts: 225
Location: Jersey


PostPosted: Fri Dec 07, 2018 9:17 am    Post subject: Reply with quote

Sorry for the undoubtedly incredibly thick question...but would stuff like this have been addressed in a full glass out respray by a reputable bodyshop? Mine was resprayed just before I bought it and (not being very technical/DIY-minded) I am hoping for some reassurance that it'll no doubt be alright Dont know
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
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Endoman
Suzuka


Joined: 11 Apr 2011
Posts: 1190
Location: Bolton U.K.


PostPosted: Fri Dec 07, 2018 9:30 am    Post subject: Reply with quote

pierrebear wrote:
Sorry for the undoubtedly incredibly thick question...but would stuff like this have been addressed in a full glass out respray by a reputable bodyshop? Mine was resprayed just before I bought it and (not being very technical/DIY-minded) I am hoping for some reassurance that it'll no doubt be alright Dont know

Probably no, mine wasn't. The only way is to take the wing stays off, removing the bumper supports to look inside gives a false sense of security.
In addition to spraying wax from the ends there is a bung in the engine compartment where you can get at the bits further down.
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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 9:49 am    Post subject: Reply with quote

NIBrown wrote:
mashby wrote:
First impressions weren't too bad as it's all heat shields but on closer inspection I could see the wing plates were a bit crusty. A prod with a screwdriver revealed a hole Surprised

Removing the bumper beam I could now see inside the chassis legs nooo
The Left hand chassis leg was in a much worse condition inside than the right one!


Ouch, that looks a bit nasty Surprised I'm sure they will be like new once repaired.
I was a lot luckier with mine a month ago, perhaps a sheltered life has helped them.
Keep up the good work and post regular updates Thumb

There are some good products out there for rust prevention once completed.
I used Bilt Hamber Electrox 93% zinc primer before the top coats and sprayed with about 6 coats of Dynax S50 to all plates and in the cavities once all work completed.
Looks like it will last forever.

Good luck Thumb


It's all protected with Bilt Hamber now it's finished. I put it all back together last weekend thumbsup
I'll post another update tonight.
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 
  
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cableguy
Kyalami


Joined: 10 Sep 2007
Posts: 1774
Location: North Yorkshire


PostPosted: Fri Dec 07, 2018 11:02 am    Post subject: Reply with quote

I think it's pretty much a given that any 993 that hasn't been locked away in a barn for over a decade will need the chassis legs titivating...

It's almost 3 years since I had mine sorted: http://911uk.com/viewtopic.php?t=110992&highlight=chassis+legs

Whilst in there, it's a good idea to check the inside lip/edge of the rear arches as these are also very prone to rust, mainly from the peppering they get from stones along with their now 20+ years under their belt. I had mine sorted and painted while the chassis legs were repaired. Thumb

C.
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stichill99
Spa-Francorchamps


Joined: 03 Nov 2013
Posts: 308
Location: Scottish Borders


PostPosted: Fri Dec 07, 2018 3:31 pm    Post subject: wheel arches Reply with quote

Cableguy,did you just get the wheel arches cleaned and painted or did you have to paint the whole wing? When my car was in getting scuttle done I commented to the body shop there was some light bubbles on the inner lip of wheel arches and could they tidy them up? He replied that he would need to paint the whole side of the car which seemed ridiculous. I would have thought a good painter could have blended the inner lip without needing to come up onto the side of the car?
 
  
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Jet Jock
Montreal


Joined: 18 Jul 2005
Posts: 515
Location: Dublin


PostPosted: Fri Dec 07, 2018 5:53 pm    Post subject: Reply with quote

Good news that the car is being looked after Mashby. Unfortunately as we all now know, most of these old girls rot in these areas. Unless she has lived a charmed life on the continent it's inevitable that these issues need to be addressed sooner rather than later. I spent the winter 3 years ago stripping down the rear of mine to do some preventative maintenance. Luckily enough it wasn't as bad as I first thought and thankfully mine got new bumper supports and a coating of Dynax along with a lot of other hard work like heat shields and replacement of all the nut and bolts that has rusted. Unfortunately I got some good and bad news last week. I sent my old girl to my trusted Indy for some preplanned 'Nicesties' as he calls them that has lead to some bodywork. Some bubbling appeared on the sills and on closer inspection it had been rusting from the inside out. He cut out the bad bits and has done a great job bringing it back to perfect. May be the collective should check these areas next time you get a chance. It may be just mine that has suffered weakness in this area. My Indy has told me the rear is perfect still 3 years later which is encouraging. Engine out now for some more TLC. I'm not looking forward to the bill Surprised .
_________________
993 C2, RSR's, Cargraphic 100 Cell Cat, Turbo Twist Hollows, Brembo Big Reds Turbo Brakes, Big Ovals, Wayne Schofield Remap, KW Supersport set up by Chris Franklin, RS engine and transmission mounts, Fabspeed induction kit, HID conversion...
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 6:07 pm    Post subject: Reply with quote

Thanks Jet Jock, it's definitely getting looked after. I have already inspected the sills and the near side does need repair. Should be an easy repair for a body shop and not anywhere near as expensive as the quote I've had to replace the sills on my MGB.
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 
  
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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 8:09 pm    Post subject: Reply with quote

After cutting the rot out I ground off the surface corrosion and zinc primed. A friend made up a repair panel for the near side and a small patch for the off side.
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 8:11 pm    Post subject: Reply with quote

Inside the LH chassis leg. You wouldn't think it wasthe same one worship
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 8:26 pm    Post subject: Reply with quote

Insides were treated with Bilt Hamber Dynax S50 and all outer surfaces with Dynax UB. This is not going to rust again.
New wing supports also painted and fitted with Sikaflex on the mating faces to stop water creeping behind.

The bumper beam tubes also needed replacing as they were badly corroded. OE 993 part 99350501900 costs £76+vat each. With a bit of research I found that the 996 uses exactly the same part but with a different part number 99650501901 only costs £29+vat each!
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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mashby
Trainee


Joined: 12 Nov 2016
Posts: 55
Location: Coventry


PostPosted: Fri Dec 07, 2018 8:59 pm    Post subject: Reply with quote

Most of the heat shields just needed a really good clean but the small shields that cover the silencer pipes were missing so these were replaced. New Top Gear exhaust system also fitted with Dansk big ovals. thumbsup

The small brackets which hold the lower PU and heat shield were also badly corroded. As an experiment I put them in a solution of Bilt Hamber Deox C. The result was impressive so they were painted and reused.
_________________
1994 993 C2
1974 MGB GTV8 3.5
1980 MGB Roadster 1800 stage 3
 



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cableguy
Kyalami


Joined: 10 Sep 2007
Posts: 1774
Location: North Yorkshire


PostPosted: Fri Dec 07, 2018 10:54 pm    Post subject: Re: wheel arches Reply with quote

stichill99 wrote:
Cableguy,did you just get the wheel arches cleaned and painted or did you have to paint the whole wing? When my car was in getting scuttle done I commented to the body shop there was some light bubbles on the inner lip of wheel arches and could they tidy them up? He replied that he would need to paint the whole side of the car which seemed ridiculous. I would have thought a good painter could have blended the inner lip without needing to come up onto the side of the car?


Sounds like your body shop were right as my chassis legs and arches resulted in an almost half car respray.

C.
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Jet Jock
Montreal


Joined: 18 Jul 2005
Posts: 515
Location: Dublin


PostPosted: Fri Dec 07, 2018 11:16 pm    Post subject: Reply with quote

My brackets had met the same faith Mashby and I was also able to save them too. Amazing what a good Aqua Blast can do. Rustproofed them prior to reinstalling. Love the tips. Exciting times.
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