26 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH3.4 egas supercharger opinions
Leading reported evidence
Run vf eng
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
Especially when they realize it's going to cost them another $12- $25k to replace the engine that was working perfectly well before they decided to modify it...
Leading evidence: 'Run vf eng' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'nicest 996' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace engine' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that suspect a cause
1
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Suspected cause
I always thought it was the nicest 996 that I ever saw.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion
Especially when they realize it's going to cost them another $12- $25k to replace the engine that was working perfectly well before they decided to modify it...
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
So as far as the "old guys" running superchargers, I'm still around, but have decided to remove the SC kit (sell it, as a matter of fact), and have fun with my 3.8 NA, if I can ever get it going and finished
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace engine
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Especially when they realize it's going to cost them another $12- $25k to replace the engine that was working perfectly well before they decided to modify it...
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
So as far as the "old guys" running superchargers, I'm still around, but have decided to remove the SC kit (sell it, as a matter of fact), and have fun with my 3.8 NA, if I can ever get it going and finished
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
It wasn't until I took the Raby rebuild class, and learned how to use a manometer to diagnose a faulty AOS, that I realized the source of my lean condition (both visible by the AEM AFR gauge mounted above the steering wheel, and logging with a Durametric.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
26 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T172408Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Just new to this forum but been on UK forums for a few years so hello to all.
I�ve had my C4 for a few years now and I�d like to get a little more from it, I don�t want to sell as basically the car is spot on else where, I�ve spent a fair bit on chassis work Ohlins suspension new suspension arms etc and it�s also had an engine rebuild so basically I�d like to keep the car and see if I can add power
Over in the UK the supercharger route is not popular and everyone seems to think it�s a disaster waiting to happen, I hoped to come over here and get some proper reviews as to whether or not this is a viable option as I�m led to believe it�s quite popular.
If if anyone has any information for me it would be greatly appreciated
I think the general knowledge and bias is the same regardless of where you are in the world. The M96 in it's stock form is not a good foundation for either Supercharging or Turbocharging. They will break if over-taxed and are VERY expensive when they do! There are things you can do to strengthen the engine, but they too are extremely expensive. It seems like Nickie's, larger bore's (up to 4 liters), con rods, pistons, head-work etc. are the "magic bullets" to higher output without worries of CEF.
^^ What they said...
There are just a slim few supercharged 996s out there that are running �just fine� I�m sure. I would check to see how many engine hours and miles these examples have racked up. You might find the answer to be �few and low,� so as to suggest that these examples aren�t going to hold up over time all that well.
https://www.6speedonline.com/forums/996/11620-supercharing-my-996-a-8.html
If you search way back in time, you will find dozens of 996 owners had a supercharger installed on their cars.....many of them tracked their cars on a regular basis. I would challenge the naysayers to find any engine failures from that time. I have continuously owned at least one 996 since 2003 and I regularly communicated with guys that had a supercharger on their 996. I do not recall anybody that did not love it. Back then, you could get a supercharger for your 996 from EVOMS (Vortech), TPC, and RUF.
Seems like that link only had 1 or 2 people with S/C (mostly by
pixrken
). And just dyno pulls and only 1 or 2 DEs. Doesn�t seem like a lot. Hopefully others with experience will chime in.
Redbridge-EVOMS, (Ferdinand), Mother (made his own supercharger set up using either a Vortech or Procharger), Itzkirb-EVOMS (tracked his frequently), 1999porsche996, and deputydawg. You can search any of these names on Rennlist or 6-speed to read about their experiences with a blower. Back in 2005, EVOMS was up to over 100 installations of their system. The owner, Todd, had one on his wife's yellow convertible...it was featured in numerous magazines. Porsche Excellence, GT Purely Porsche, and Eurotuner magazines all featured articles on supercharged 996 and 997 Porsches. Check out Sharkwerks project White Shark. Alex built it to run the EVOMS system. I don't remember if he ever installed it. I'm sure he is still a great source of info on the system, since he undoubtedly had several on customer cars.
Most of the guys that had supercharged cars, back in the day, have moved on to turbos or GT3s, other Italian cars, or other interests all together.
I doesn't surprise me that not a lot has been heard from the folks that did these mods. It isn't uncommon for someone that has done a $7-10k modification on their engine only to have it blow up, not publicize their folly... Especially when they realize it's going to cost them another $12- $25k to replace the engine that was working perfectly well before they decided to modify it...
Do you personally know of one of the members that I listed who had their engine blow? To the best of my knowledge, they simply upgraded. If they could afford to modify an $80k plus car, they didn't need to keep their 996 for 20 years.
I'm one of the few who has not moved on. I remember now why most of us stopped posting.
I'm sure that even Jake gets weary of the 996 bashing. He never needed a blower to make power.....
http://forums.pelicanparts.com/porsche-cars-sale/553344-fs-996-c2-street-able-track-car-lots-upgrades.html
It seems like it�s pretty well documented that the flat 6 loves to be force fed whether by turbo or super charger. There are plenty of 996s that I have read up on who have had good luck and mileage after power adders. I was just talking with one of the guys at Fabspeed about a customer of his who has a 450hp supercharged 996 he daily drives.
I guess ymmv but seems like a solid plan to supercharge from what I�ve heard.
I personally have been drooling over the TCP kit but LS swap is kinda neat too haha
Here is the first members car....Redbridge aka Ferdinand.....that I listed. I always thought it was the nicest 996 that I ever saw.
https://www.6speedonline.com/forums/automobiles-sale/305508-supercharged-millenium-edition-porsche-996-a.html
To the OP, good luck with your research.
I have sleeved many of these engines after they end up slinging a rod or smoke horribly from either cylinder distortion or broken rings. Just like back with the aircooled cars and SoK with their bolt on superchargers. The engines ran, but smoked like banshees due to broken top rings.
Not to say it can't be done, but the tuning needs to be spot on, some sort of water/meth injection needs to be used, and a large enough intercooler needs to be used to optimize the combo. The RUF SC engines had custom low compression pistons in them. I've redone those as well.
Hi Charles. My case halves are currently at your shop for the 3.4 to 3.8 Nickie upgrade. I installed and ran the VF Eng. SC (version 3, self-contained oil, intercooler, etc.) for approximately 4 years (2013 - 2017). Please share any data you may have on the condition of the cylinders.
My car developed a knock, that sounded like piston slap or rod bearing slop. Once I had the crank carrier out of the engine, I tried hard to reproduce the knocking sound by manually turning the crank with the pistons. I didn't hear anything, and, the rod bearings, despite having some high-heat markings (light blue), appeared regularly worn. It wasn't until I took the Raby rebuild class, and learned how to use a manometer to diagnose a faulty AOS, that I realized the source of my lean condition (both visible by the AEM AFR gauge mounted above the steering wheel, and logging with a Durametric. Dedicated O2 sensor post-cat).
So as far as the "old guys" running superchargers, I'm still around, but have decided to remove the SC kit (sell it, as a matter of fact), and have fun with my 3.8 NA, if I can ever get it going and finished
I have some other bolt-ons planned (GT3 throttle-body w/ Compeitition PID plenum), but make no mistake, it's not going to get close to the HP the SC kit makes (even with Len's head work). With forged Carillo Rods, ARP bolts, and the rest of the internal goodies LN offers, maybe some day I'll try forced-induction again. But that is way in the future, for me.
Here's my install from 2012
Doug, sorry to hear about your engine. I would love to hear about how your new N/A engine compares to your supercharged stock engine.
Nice install video. How many miles did you get with the supercharger? You are obviously a first class gearhead. I commend you for making the best out of a bad situation. Your stroker motor should be fun, without the worries of forced induction. I am really tempted to ask you for a price on your supercharger. Your experience with it is a really good reason to resist the temptation.
My son's Saleen is sitting in my driveway with a cracked block and a Vortech bolted to it. I am going to buy him Dart block to prevent s recurrence.
No, I don�t... But, knowing what I know (mostly from reading but also from doing quite a bit of work to my own engine) I�d stay away from super charging and turbo charging unless I was also going to do a bunch of other stuff as well (as stated earlier). I certainly don�t have a nothing against the M96, in fact I think it has the potential to be a great engine - it just has some inherent weaknesses in its stock form, and it�s expensive to upgrade. I�ll probably have mine sleeved at some point if necessary...
I would love to see pictures of your engine failure if/when you have determined what was causing your issue. Supercharging/Turbocharging adds lots of stress, but in some ways is not as stressful as turning higher RPM's. The stress exerted by higher RPM's is a multiplied factor where as the stress by SC/TC is a percentage of power increase. Data from your cause of failure may help in developing stronger parts that could be a benefit to N/A and F/I engines.
Hello Mark. I think you and I are some of the old guys in your reference. I also specifically remember Ferdinand's 911, absolutely stunning. Good to see you still have your 996!
Thanks for the input guys, the one thing that now puts me off is destroying my rebuilt engine, I�ve spent a small fortune on it in the last few years, built to a standard spec with strengthening rings fitted to the top of the cylinders so hopefully this would help if I decide to boost the car.
The research will continue but again thanks for the input
I've seen customers fit base shims on cylinders too tight on aircooled engines and when they get hot, it constricts the bore. What keeps this from happening?
