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Posted by: OllieG Aug 11 2013, 03:52 PM

I've just welded on some suspension ear re-inforcements from Tangerine Racing.. I'm looking to put in a Suby engine so figured it was wise..

http://s1235.photobucket.com/user/914Silverfox/media/187EarWeldedandGround_zps1b86d0e1.jpg.html

Before I slapped on the primer, I thought I'd just go over the whole thing again with a cup brush on the grinder, and to my surprise, found this 'little' hole lurking on the underside..

http://s1235.photobucket.com/user/914Silverfox/media/188Earreverseholes_zps78c5003b.jpg.html

OK, so my repair job looks a bit of a dog's dinner but it's solid to say the least. I would say the car I'm restoring generally has a 'normal' amount of rust, not excessive and certainly repairable for a novice like me. But before I removed the paint from the ear there were no signs of any holes...

http://s1235.photobucket.com/user/914Silverfox/media/189Earreverseholeswelded_zpsef827893.jpg.html

Now I don't like to stir, but the whole thing did get me wondering how many other 914s are out there being driven unwittingly with potential issues like this..I'm sure suspension mounts with holes like thiese can't be safe surely?! Next time you get a chance, you might want to have a quick check of your own.

Posted by: mepstein Aug 11 2013, 04:23 PM

"how many other 914s are out there being driven unwittingly with potential issues like this..I'm sure suspension mounts with holes like thiese can't be safe surely?!"

Many of them. Most thought to be "rust free"

Posted by: d914 Aug 11 2013, 06:13 PM

I did the same thing and found a crack.. !! for the same reason.. Just thought I was getting ahead of the game!!

Posted by: rdauenhauer Aug 11 2013, 08:09 PM

Oh they CAN be driven....

Posted by: Socalandy Aug 11 2013, 08:20 PM

I'm sure this is a regular thing with our cars. replaced the Passenger sided completely and used rust encapsulator inside the drivers side. Here's what the inside looked like, a lot of rust in the bottom for sure.


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Posted by: OllieG Aug 12 2013, 03:43 AM

Yeah, that looks bad...but it's only when you have a really good clean-up that you can see just how bad it is, and even then it's not always obvious.

Love your yellow six btw Andy.

Cheers,

Ollie.

Posted by: saigon71 Aug 12 2013, 07:13 AM

Nice repair work Ollie. I ran into the same thing after hitting it with a wire wheel. Make sure you keep that suspension drain clear going forward. It took me a few hours with a piece of safety wire, a set of picks and compressed air to unclog mine. I sprayed some extend in there with a red straw from a WD-40 can, then hit the inside with two coats of appliance epoxy. Good to find this now.

Posted by: sean_v8_914 Aug 12 2013, 08:22 AM

YOU NEED TO CONNECT THE LOWER RIBS!
you cant stop there or it will rip where teh reinforcement ends

Posted by: sean_v8_914 Aug 12 2013, 08:29 AM

both lower ribs connect to back of ear


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Posted by: OllieG Aug 12 2013, 08:41 AM

Very good shout...I'll do that, thanks.

Posted by: naro914 Aug 12 2013, 07:20 PM

Yes, get your cars on a lift and check it over.... A couple years ago, I was planning to scrape all the undercoating off Papa Smurf a couple weeks after I had just run my last PCA Club Race of the year...

To my surprise I found this:



Which after further investigation, became this:














I've since replaced EVERYTHING with the Tangerine Racing raised rear pickup points kit.

Posted by: bulitt Aug 12 2013, 07:34 PM

Just fricking great, more crap to check!
Think when I get my V8 in I will do a 6000rpm clutch dump. That should expose some weak parts! Several ways to solve this. JP solved this issue as he just welded what looks like a straight 1/4" plate in place of the ear.

Posted by: 914_teener Aug 12 2013, 07:47 PM

Sean...

Are you sayin to weld up the drain hole?

Posted by: bulitt Aug 13 2013, 02:31 AM

I believe he is saying when you reinforce the ear alone it just moves the potential failure point to the two ribs that extend to the outer suspension ear. Chris has said this also. So in this pic from Sean you will see the two flat pieces of metal hanging down. I believe he wraps them around the rib and welds them on as reinforcement.
This ties the ear to the body.

Posted by: sean_v8_914 Aug 13 2013, 07:41 AM

yes, it wraps around to the inside. i do both ribs under there and of course new drain holes. there is also a fat pc of 14 ga on teh trailing edge welded to the rear most seam.
Bob, I bet you had lots of fun doing that, didn't ya?

Posted by: sean_v8_914 Aug 13 2013, 07:50 AM

here is another example of what happens when we stop short of a complete reinforcement of this area

front rib, back rib, under long up to shock tower, seam welded, re do spot welds

note that this ear is not rusty inside. fat sticky tires did this...and a guy that knows how to make them stick of course.


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Posted by: sean_v8_914 Aug 13 2013, 07:52 AM

i really want to do some CFR raised mounts on the 10jreen sooooo bad it hurts

Posted by: naro914 Aug 13 2013, 08:00 AM

Everything...and I mean everything, got cut out and replaced with Chris' system:




After everything is cut out, weld in the kit, plus the stiffening plates for the wheel well area.







All painted and pretty!

Posted by: naro914 Aug 13 2013, 08:04 AM

oh, and fyi, there was NO rust anywhere in there.
these cars were 1) built over 40 years ago and 2) were built to withstand the stress of around 100 hp and little tires. Papa's been running over 200 hp with 12" wide slicks for 15 years now, and now has around 350 hp...with that stress, something has to give.

Posted by: OllieG Aug 13 2013, 09:29 AM

Sorry, what do you mean 'new drain holes'?

Also, when you wrap the metal around to the inside how do you get around the curvature of the rib? Is it important that the re-inforcement metal sits right up against the rib or is it OK to have gaps in places?..