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Discussion summary
YOUR RESEARCHAnyone bought a set like this for their 996
Leading reported evidence
Install bolt assembly
Performed · outcome unconfirmed
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Performed · outcome unconfirmed · Original poster
Our first attempt to loosen the clamp nut resulted in it snapping off that led us to hammering/prying it open then we drilled it out and installed a new bolt assembly.
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Suggestion
I did check my existing clamps/bolts before ordering the exhaust tips, and they didn't look too bad, but I didn't think about checking to see if new clamps/bolts were readily available.
Leading evidence: 'Install bolt assembly' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is '12-point socket would also have rounded' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check existing clamps/bolts' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
The other side had been installed with the clamp rotated so that there was actually no way to get a socket on it, so I had to cut that off.
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Performed · outcome unconfirmed
(swapped the factory single ovals to Tequipment quad tips)
Replace without looking at the condition of the current ones
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Performed · outcome unconfirmed
I have extensive records of the car since new and don't see any motor mount replacements in its history, so I don't think I'm going too far out on the limb to assume they need to be replaced without looking at the condition of the current ones.
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Performed · outcome unconfirmed
I used the copper anti-seize to coat the threads and clamp ends on the new clamp.
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Check existing clamps/bolts
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Suggestion
I did check my existing clamps/bolts before ordering the exhaust tips, and they didn't look too bad, but I didn't think about checking to see if new clamps/bolts were readily available.
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Performed · outcome unconfirmed · Original poster
Our first attempt to loosen the clamp nut resulted in it snapping off that led us to hammering/prying it open then we drilled it out and installed a new bolt assembly.
Replace exhaust tips and has any "tips" (pun not avoidable)
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Suggestion
If anybody has replaced the exhaust tips and has any "tips" (pun not avoidable) on anything in particular to look out for while replacing them, I have a very open ear.
Replace without looking at the condition of the current ones
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Performed · outcome unconfirmed
I have extensive records of the car since new and don't see any motor mount replacements in its history, so I don't think I'm going too far out on the limb to assume they need to be replaced without looking at the condition of the current ones.
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52 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Looking to replace my stock tips with something like this and carefully store away the originals. Anyone have experience with a product like this? Thanks, Ralph
http://www.ebay.com/itm/1-Pair-Quad-...pXTwIN&vxp=mtr
Im typically not one for mods as I love to keep my cars bone stock but those quad tips are a very tempting mod that I've considered over past couple of years.
Easy enough to take them off when and if the time comes to return to stock.....no harm done!
I'd be careful with buying these from many of the aftermarket companies out there as potential fitment issues as well as poor finish quality.
I bought a set of exhaust tips off ebay to replace a damaged OEM quad tip on my 996tt, not the same you are looking at but similar. The ebay tips were exactly the same as the OEM tips, only the manufacturer stamp was different. I've had them over a year and they are holding up just fine. Price on ebay was $214 vs. $595 for the OEM tips.
2003
We are at the beach this week so I don't have the option code handy right now, but yes, I was surprised they were available on non-turbo.
I like the trim on the turbo model picture from kcattorney, I never noticed the black trim as well under the bumper cover, does anybody know if those parts fit a narrow body bumper cover?
David
I a bit of an originality freak, but I'm tempted to get these also -- especially since the quad exhaust seems to have been an available option originally based upon NYoutftr's post. Of course, these aren't OEM, but it looks like they are very high quality.
One difference I see is that you can see the weld marks on the outside of the exhaust in the seem between the two ovals that doesn't appear to be there in the OEM set I saw listed on eBay.
I just bought this set (seems to be the same seller with slightly different name, but $20 less and the picture seems to have less of a weld seam between pipes) ->
http://www.ebay.com/itm/262324838024
I definitely will let you know and post some photos.
I'll also post "before and after" dyno readings. I've got to tell you that I have some pretty big expectations on HP increases. I ran some numbers last night on the back of an envelope and, if my math is correct, it looks like I'll be doubling the number exhaust outlets!!
Wow, thank you NY...and I love the look...and the option code appears to be X54, now to search for the part number and start to compare to the aftermarket... Ralph
Of course I did. What do you think I am, an idiot???
Ok, so I ordered them 5 minutes after seeing your post. Thanks for asking. I did check my existing clamps/bolts before ordering the exhaust tips, and they didn't look too bad, but I didn't think about checking to see if new clamps/bolts were readily available. Just ordered a set through eBay.
Thanks for info. It's very cool to see that rear spoiler was also a factory option.
I'm afraid I'm going to have to ask you to stay off eBay for a while. Every time you browse, it costs me money!
(actually can't wait for this stuff to arrive)
I received the exhaust tips this morning. I'll reserve judgment until they are on the car, but they look really really good. The build and material quality seem top notch. I won't receive the new clamps until Friday, but I applied Kroil to the existing clamp bolts tonight to let it soak in, which hopefully will make them easier to remove. The space to get at the clamps is fairly tight. I'm really glad Ralph suggested getting new clamps/bolts because, as I look closer, I definitely wouldn't have reused the existing clamps.
I also coated the outer exhaust tips with Rejex, which takes something like 18 hours to cure before it can be exposed it to heat. I'm hoping this helps prevent carbon build-up around the tips or at least makes them easier to clean. I didn't put Rejex on the downpipes because it gets too hot, but I think the tip ends only get a bit warm.
Yes, I am planning to install myself. It looks fairly straightforward and simple to do. The only issue is that space is a little tight to access the clamp nuts and you never how easily everything will come apart after being roasted by exhaust heat for many years.
If anybody has replaced the exhaust tips and has any "tips" (pun not avoidable) on anything in particular to look out for while replacing them, I have a very open ear.
You're right about the tight space, we had the car on a lift and I helped my mechanic by holding the tip firmly in place while he tightened the clamp, nothing worse than a set of lopsided exhaust tips. R.
Well, it was not easy, but I have one of the exhaust tips installed. The fit and quality is excellent. If the existing clamps come off easily, then it isn't a difficult job. The problem is, I think it's usually the case that they don't come off easily after baking in the heat for a few years (and there isn't a lot of access to cut them off). Mine were not easy to remove, I will post some tips later, but thought I would post some photos before putting on the left side:
I like the look of the new tips. Just a food for thought, if your planning to do some new motor mounts in the future, you may want to loosen the tips since it looks like you raised the the right up a bit and they may hit the bumper when installing the new mounts.
Wow, love the new look Peter, nice work. I knew they would come off hard, we had a hell of a time. Glad you got the new clamps. Tex makes a good point about the motor mounts too... Ralph BTW, because of 1 of your previous posts I bought a jug of Rejex off of Amazon, never heard of the stuff before... Just thought of something. Our first attempt to loosen the clamp nut resulted in it snapping off that led us to hammering/prying it open then we drilled it out and installed a new bolt assembly.
Rejex is great stuff. I only use it for wheels and other items to keep dirt off. A lot of people use if for the whole car, but I find other products have better shine, so I don't use it on the car body. I'll post what I learned about installing these in the next post.
As I mentioned before, I was able to get the right side off by loosening the nut and removing the clamp. The other side had been installed with the clamp rotated so that there was actually no way to get a socket on it, so I had to cut that off. That turned out to be much easier if you have a saw that can fit in the tight space.
Method 1: Cutting the bolt to open the clamp
(this is far easier if you can get a saw on the bolt)
The first picture below is what you need to remove/install the tips by cutting them off. I used the small saw shown to cut the clamp bolt in half. It fits in the tight space and allowed me to exactly cut the bolt in half. It took about 15 minutes of work with that tiny saw, but
once you cut the nut, the clamp just immediately opens and the tip can be removed
(unlike if you loosen the clamp nut, where it still take a lot of work to get the clamp to open because there is friction on the bolt).
I used the copper anti-seize to coat the threads and clamp ends on the new clamp. I think this will make it easy to remove next time. Copper anti-sieze is good to about 1800F, nickel anti-sieze is good to 2400F, so that's even better, but I don't think the end of the exhaust gets that hot.
Finally, I used the twist end ratchet with a 16mm 6-point deep socket to install. The new exhaust tips are quite a bit wider than the stock tips, so I'm not sure a regular ratchet would work for installing them, though I didn't try it since I had the twist ratchet (I bought that probably 15 years ago and this is the first time I've used it). Note that I don't think the twist ratchet would have enough torque to remove an old corroded clamp, but it was fine for tightening them.
If your socket set is like mine, it has every size except the 16mm deep socket you need. I bought a single Husky 16mm 6-point deep at Home Depot for $3.
Method 2: Loosening the clamp nut to remove clamp
(only do this if you can't cut the bolt because cutting is much easier)
The second picture shows what was used to loosen the clamp. First, apply Kroil to the nut bolt and clamp ends. Kroil is supposed to be a miracle worker for freeing corroded fasteners, but corroded exhaust bolts are a pretty formidable opponent because of the repeated exhaust heat cycles. I applied Kroil to the clamp bolts a couple of days in advance and it still took a lot of work to get the nut off. It's probably better to get the spray version of Kroil, I had to use a hypodermic needle to get it in the right places, would have been easier to just spray it.
A long ratchet is needed to reach beyond the exhaust. The ratchet I used has a swiveling head, but I think a straight long ratchet would work also. I could get to the nut with a wrench easily, but I'm certain the nut would have rounded before it came loose, you really need a 16mm
6-point
deep socket (I suspect a 12-point socket would also have rounded before it came off). With enough force on the ratchet the nut should come lose.
The problem is, once the nut is lose, the clamp still does not want to separate because it binds on the bolt in the middle (this is why cutting the bolt is better). Also, when you loosen the nut, the self locking mechanism on the clamp bolt will fall out of its track so you can't loosen the nut any more. This is where I used the vice grips to hold the other end of the clamp from turning once it came out of its track so I could get the nut off.
To get the clamp apart, you to either remove the clamp bolt (preferably if you can) or use a pair of screwdrivers pried against each other to separate the clamp ends. Neither is very easy to do because of the heat-induced corrosion.
Installing the Tips
Installing the tips is easy, just hang the clamps on the exhaust side, tightening them just enough so they can't fall off but still loose enough to be able to insert the end of the tips. Then insert the tips and tighten the clamp bolt while making sure the clamp stays parallel to the ground so it doesn't end up crooked. As mentioned before, the new exhaust is wider, so I don't know how easy it is to install without the twist ratchet. It probably is possible, but I didn't try since I had the dusty twist ratchet sitting there feeling lonely and ignored.
I'm really happy with the end result -- it makes a huge difference in the rear view of the car. I don't really like anything non-stock, but this style of exhaust tip was a factory option and it just looks much more aggressive without drawing attention to itself or looking gaudy or added on.
Looks great, I was also thinking about doing some quad tips...or ones like you did...I really like the black fabspeed ones but 450 is out of budget for this.
I promised everyone "before and after" dyno runs and here they are.
The boost from the quad exhaust tips is highly impressive. I almost needed to get bigger charts.
And before anyone asks ... no, I did
not
just grab somebody else's dyno runs and draw fake curves with a black medium point Sharpie.
This is legit stuff.
Hey Pete that's a bit disappointing as I would have hoped for and expected a greater gain especially after making such an expensive and complicated mod.
Might want to have the car checked out to see what the problem is as something must be amiss.
No worries though as it now looks even hotter from the rear!
Geez, are you guys superficial or what???
I never gave a single thought to looks, it was always about the performance for me. I was so confident that the HP gains would be massive that I didn't even start the car for the Quad dyno run. That's right, the car was
OFF
-- I didn't want to break the dyno or sheer the arm off the charting machine (out of fear that it might ding my car).
Also, the new tips are about 3 grams lighter (I'm guessing, because I didn't actually remember to weigh them), so the handling is much more crisp in addition to (you guessed it) even
more
massive performance gains.
You need to get these tips and start watching Bugatti Veyrons and LaFerraris disappear into tiny dots in your rear view mirror. Do it for the
performance
, not just because supermodels will start stalking you shortly after you have them installed.
Sure, hopefully can do that this evening or tomorrow.
These are the clamps I ordered and they were a perfect fit:
http://www.ebay.com/itm/Porsche-911-...72.m2749.l2649
I saw some discussion of stainless steel clamps online, but I couldn't find any for sale. Also, from what I read, it sounds like stainless clamps are still subject to galling under repeated exhaust heat cycles, so they may not be better. I do think that, with anti-sieze applied to the stock clamps, they will be much easier to remove in the future, but only time will tell.
Also, the new tips are about 3 grams lighter (I'm guessing, because I didn't actually remember to weigh them), so the handling is much more crisp in addition to (you guessed it) even
more
massive performance gains.
Hey Pete don't forget to fill us all in on the mileage gains as well.
Thinking 15-20% improvement on top of the extra HP and added bottom end power.
Can't wait to hear about your next anticipated power gaining mod!
Sorry, but I seem to be enjoying this way too much.
In all honesty they are a very cool mod which I may jump on as well
Thanks Pete, really nice work on your mod, love the new look. Have you gotten underneath to see what condition the motor mounts are in? Today my guy gets a new transmission mount, very exciting, going to see LOTS of different gains from this change out... Ralph
I ordered new motor mounts a couple days ago from RL sponsor RennPart, so those are going in next. I have extensive records of the car since new and don't see any motor mount replacements in its history, so I don't think I'm going too far out on the limb to assume they need to be replaced without looking at the condition of the current ones.
Will do, but just be forewarned that it might be a long time before I have any data. With the efficiency gains and all, I anticipate that it will be a very, very long time before I need to put any more fuel in the tank.
Yay! I bought some eBay quad tips, installed them & loved the sound. More burble under load & still no drone. Then I got home and realized my bumper was melted near the tips on account of the new exhaust tips not extending as far as the OEM tips. There was right about the same clearance between the OEM and new tips, and I spent 30 minutes fitting the new tips to funnel exhaust flow about a half inch below the bumper lip. But one canyon run was all it took to destroy ze bumper.
On the bright side, the bumper was already messed up & in need of replacement or a thorough paint correction. Also, having the most popular color (Seal Grau) made finding a replacement a 30 minute exercise...
I'm a stubborn bastard though & new quad tips are en route
I received a PM request for more photos of the tips on a 996.1, so posting to the thread. It would be great if a mod could change the title of this thread to add "exhaust tips" to make it easier to find (took me a while to find it myself). The current title ("Anyone bought a set like this for their 996") doesn't provide any info about what the thread is about.
Please excuse winter tires & wheels ...