996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

Pinning vs Welding and what else to do?

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Old Aug 24, 2014 | 08:52 PM
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Originally Posted by ramman5600
Hopefully this works. Here's a pic of the pile of pipes welded. Going to pressure test before reinstall.

All pressure tested now for reassembly and hopefully back to the fun.
 
Old Aug 24, 2014 | 09:56 PM
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Find an FAA certified aviation welder in your area. These guys are excellent at welding all types of aluminum. Our local guy has welded probably 20+ sets of pipes over the last two years without any issues. Pretty much all track cars. He has cut a beer can in two on a band saw and welded it back together. He's goooood.
 
Old Aug 25, 2014 | 10:39 AM
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Originally Posted by pwdrhound
Find an FAA certified aviation welder in your area. These guys are excellent at welding all types of aluminum. Our local guy has welded probably 20+ sets of pipes over the last two years without any issues. Pretty much all track cars. He has cut a beer can in two on a band saw and welded it back together. He's goooood.
Yeah - some of these guys are amazing. With this skill level and quality - I couldn't complain about the price he charged my Porsche tech. Can't wait to get the car back.
 
Old Aug 25, 2014 | 10:56 AM
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Originally Posted by ramman5600
Yeah - some of these guys are amazing. With this skill level and quality - I couldn't complain about the price he charged my Porsche tech. Can't wait to get the car back.
If I recall it was $1000 for our FAA guy to weld all 8 fittings after we delivered the manifolds to him. He removed the old fittings, cleaned everything, and welded the fittings in place.
 
Old Aug 25, 2014 | 01:22 PM
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Welding is nice if you have new or extremely clean parts. Saying this welds are subject to porosity and vibration cracks. Pinning will do the job just fine. I had the choice with the engine apart with clean new parts and choose to pin. What do I know about welding? I held ASME A,R,S and PP stamps and held the title of Quality Control Engineer. Either will do the job. It comes down to how you choose to spend your money.
 

Last edited by cjv; Aug 25, 2014 at 01:24 PM.
Old Aug 25, 2014 | 01:35 PM
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zip tie all vacume lines
 
Old Aug 28, 2014 | 08:05 PM
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Originally Posted by pwdrhound
If I recall it was $1000 for our FAA guy to weld all 8 fittings after we delivered the manifolds to him. He removed the old fittings, cleaned everything, and welded the fittings in place.
I thought my guy gave me a deal and you just confirmed it. Delivered manifolds and he did everything else and they look great and pressure tested great as well - $120.00 - I would have paid 5x's that for this quality work. I guess some people are still very reasonable these days.
 
Old Aug 28, 2014 | 08:28 PM
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Are 996 GT2's different or are all 996's susceptible to this problem?
 
Old Aug 28, 2014 | 08:39 PM
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Originally Posted by ramman5600
I thought my guy gave me a deal and you just confirmed it. Delivered manifolds and he did everything else and they look great and pressure tested great as well - $120.00 - I would have paid 5x's that for this quality work. I guess some people are still very reasonable these days.
Something tells me that even at 5x that price, he'd still have a line of takers for his services. Might want to mention it to him, I'm sure you'd get a few PMs asking for details.

-V
 
Old Aug 29, 2014 | 11:34 AM
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Originally Posted by ramman5600
I have a Tip otherwise a clutch would make a lot of sense. Has anyone considered the method in this video. they knurl the ends of the tub and then JB weld. They said that they do like to introduce any additional holes.
Porsche 996 & 997 Cooling Repair - YouTube
Great post and Thank you!
 
Old Sep 15, 2014 | 07:31 AM
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Motor is out for a rebuild right now and I need to do this. Who sells the kit with all the fittings and gaskets needed?
 
Old Sep 15, 2014 | 04:10 PM
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Originally Posted by carwash
Motor is out for a rebuild right now and I need to do this. Who sells the kit with all the fittings and gaskets needed?
contact engine builder supply and ask them. they can build the kit any way you want it. if your doing rods and head bolts now they have a complete rebuild kit with seals , rings, gaskets etc for about 1600$
 
Old Sep 15, 2014 | 09:10 PM
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I've already got all that going on... I'm referring to the kit of 8 bungs, etc to take care of my coolant line repairs. I did find a couple online shops selling a kit of machined bungs..... seems going rate is about $180 for the set.
 
Old Sep 16, 2014 | 09:55 AM
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Personally, I would weld them and not have to ever worry about it again. As long as you pressure test the welds, it's easy enough to re-weld a pin hole until it's gone and move on to the next piece. IMO, it's the proper way to do it and should last the life of the vehicle.
 
Old Sep 16, 2014 | 05:48 PM
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I did 4 out of 8 today, not an easy task, especially since I do not want to disassemble more than I have to.
 
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