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Not a small project and not a very common problem with these engines...
dporto replied to Blue 996's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)A new Porsche branded axle is between $500 - $750. Servicing the CV is a smelly/messy job but also pretty simple. The joint itself just pulls apart, then just clean up all the old grease. You'll have to pull the inner race (star thing) off the axle shaft to get the new boot(s) on (you may as well do both while you're there). Here's a good video to help you get the inner joint back together... Good luck
I wouldn't ever describe the noise made by timing chains as a "knock"... more like a "rattle", which is quite normal as the hydraulic chain tensioners get old and leak down over time. A "knock" is all together different and will be timed with the engine turning. Generally speaking these "knocks" are caused by the connecting rods on the crankshaft or the pistons ("piston slap") as they rock in the cylinder at the beginning of the up/out stroke... While these sounds certainly aren't the same as each other, they would be more consistent with a "knocking" sound as opposed to a "chain rattle"... Semantics I know, but it really does make a difference.
dporto replied to Citgot's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Use some degreaser to clean up that area good before you start to run/drive it - otherwise it'll make it difficult to see a weep/leak (unless the oil is dripping out).
dporto replied to Citgot's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)^^^ But only if the install was registered by the installer ^^^
dporto replied to Blue 996's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)You need to use a gear puller to get it off the end of the shaft (I just did one of mine the other day, so I speak from experience) - it's a pretty tight press fit - used a very simple two jaw puller (but you have to take the outside part of the joint off so you just have that inner portion left on the shaft)... Good luck
Yes, there is an actual product - should be near the end of the thread. It is developed by a guy on Rennlist (Porschetech3) he is having them made and marketing them himself. It utilizes the stock AOS but moves the diaphragm (the part that actually separates the oil from the air - hence having to seal the stock unit) to a location in the engine bay which makes it a easily serviceable/affordable part. The diaphragm itself retails for between $20 - $75 - depending on brand. He's bought and tested several different units and done comparisons.
Always a good idea to replace the AOS if you've got the engine out (fairly cheap part and extremely difficult to do with the engine in). There is a new product available from a guy on Rennlist called "the Ultimate AOS" (UAOS). The "Ultimate AOS Solution" - Rennlist - Porsche Discussion Forums RENNLIST.COM 996 Forum - The "Ultimate AOS Solution" - OK, I promised the Ultimate AOS Solution that would eliminate replacing the Factory AOS, but still function as designed. I will show the process here. I have even enhanced it further with a couple more small but vital components/fail-safes that are even way cooler... Perfect timing! Good luck with the head repairs 👍
dporto replied to violaGT3's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Just turned 160,000 mi. (on the chassis that is...) New Motor (FSI 3.8 stage II build 4300 mi. ago).
You are correct sir! You'll need to remove the heads - I'm pretty sure (but not positive) you'd need to drop the engine for that. Head cracks are somewhat common for the M96 - much more common than your oil cooler/heat exchanger. I didn't realize you were in Dubai until now... That could have a real effect on how to deal with this problem. When properly repaired, the chances of the head cracking again are extremely thin. Do some reading here : Hoffman Automotive Machine (706)769-3783 – Where's Your Head? NEWSITE.HAMHEADS.COM M96 cracked cylinder head repair ^^^ These guys are the tops in the USA - not sure who you can find over there. I think a pressure test could be useful to you if done properly... Better yet, see here : 986 996 Porsche Cylinderhead Cracks Explained – Hoffman Automotive Machine (706)769-3783 NEWSITE.HAMHEADS.COM Click here to see video of a 996 3.4 M96 head being pressure tested, revealing a microscopic crack that was not visible to the naked eye. This particular head was a prime example that a head can not be judged to be crack free without being pressure tested. I know where to look, but I…
Have you had the head(s) diagnosed & repaired yet? If not, I think you're chasing your tail...Putting your cart before the horse etc... etc... etc... Just because you haven't gotten coolant in the oil YET, doesn't mean it's not going to happen. Every time you heat cycle the engine, the chances of that head crack opening up/getting worse increase. You have to fix the problem, not just treat the symptom - it's not going to get better by itself. Good luck
dporto replied to Barchstein's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)👌 It sounds like you're staying on top of it. Good for you! You'll find that there are lots of little annoying things, that if not taken care of, turn into big expensive annoying things. Obviously, the drive-train, power-plant, brakes and suspension take precedent over the aesthetics - keep them operating properly and everything else becomes "fix 'em as you can"...
dporto replied to Barchstein's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Wow! Sounds like you got a real "cream puff"... 😲 If you've got oil "coming from the air oil separator" it's not "good news" - A) Even though the part is relatively inexpensive, the labor is very expensive - Figure $1k U.S. as a ball park figure. B) Not fixing it can/will be WAY more expensive, so - get it checked (manometer) asap and fixed if it's leaking or not within spec. C) "Real" tires - 🤣 he's funny...but IMO "real tires" start with either M or P not D... 😉 (regardless, since you already bought them, I hope they fix your problem).
dporto replied to Tim W's topic in 996 Series (Carrera, Carrera 4, Carrera 4S, Targa)Lock the car to force it to go to "sleep" mode. If you don't you'll get more parasitic drain...
"While not terminal for the car, it seems like a real pain to drop the engine, remove a cylinder head and send it out for welding." Well now, that depends on how long "for some time now" refers to. Is there any coolant in the oil sump? If so, there's a good chance that every time you start or drive the car, you're doing damage to other engine components. Yes, it's a real pain to drop the engine and remove the cylinder heads - but what's the alternative? Drive it as is? - Not a good idea. You'll also need to flush the entire cooling system, as you've now got a oil/coolant mixture in all the rubber hoses. The oil will cause the hoses to swell and become soft - not good for a pressurized system. If you flush them with detergent asap (to break down the oil) you may be able to save them. Good Luck