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Discussion summary
YOUR RESEARCHDoing 301Kph / 187Mph in a stock 3.4L 996
Leading reported evidence
Replace speedo reading
Suggestion or failed attempt
No successful repair reported for this finding.
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1
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Suggestion
Doesn't changing the wheel and tyre size change your speedo reading?
Leading evidence: 'Replace speedo reading' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace speedo reading' (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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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
Doesn't changing the wheel and tyre size change your speedo reading?
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30 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Was surfing on my old car pics and found this one taken in 2004 on my way back from Germany. Car was already sold long time ago.
Engine was making 7100RPM.
J.Seven
I know this picture, it�s from Carlos 996 3.4L. It was taken on his way to Portugal and I actually played with him at time when I took my pic at 300Kph, he said I had remove the side mirrors in order to beat him
J.Seven
This is why 996s are such a bargain, IMHO. From 1998 to now, Porsche has yet to build a 'normal' 911 significantly faster than a lightly optioned narrow body 996. (I'm excepting the GT3s and TTs, here. I'm less sure of how much their performance improved from the 996 to the 997).
Still need to log in. Download the pic to your comp. and then upload it as an attachment.
Bingo, that's Crazy Carlos. Driving @180 mph one handed, while video taping w/the other.
+1
Lighter, high reving - shorter stroke, no vario-cam plus "surge," and no foo-foo glove box
My 944 Turbo's glovebox has a duct going to it from the A/C system... I assume to keep your lunch cold as you travel.
I once remember getting stopped, and being surprised by the cold registration and insurance card!
I wouldn't complain if my 996 had a glove box...
As much as I want it to be true, I think the speedo is very optimistic at the higher speeds. Need GPS or a radar to back up a claim of 187MPH from 300hp.
Car wasn�t obvioulsy making 187MPH. Maybe real 177Mph / 178 Mph. And it only reach that speed because I was in slight inclined road (excuse me for the bad explanation, English is not my mother linguage).
J.Seven
Every time I get into this particulat thread I get a WIndows pop-up window stating that in order to access
grupoapn.com
I need to log on. Anyone else getting this message? Just curious.
FWIW, my speedo error is 5 kph throughout my 'normal' operating speed range, according to GPS. It seems like error is constant, and not proportional to speed. Just tossing that in there...
If this was the case then my car was doing real 295Kph, and some how i find it hard to believe in that number. Anyway, I believe Porsche has in owners manual a graphic which relates the rpm with real speed. My car was sold so i don�t have the owners manual with me, but anyone interested to know the real speed in 6gear at 7100rpm can see it in OM.
J.Seven
Well, since this thread now had a 2nd page, I don't get the the grupoapn.com message if I go directly to page 2 or to the newest post. But if I go back to page 1, the message still pops up. FYI.
That is amazing but I agree, speedo's don't really tell the truth.
Doesn't changing the wheel and tyre size change your speedo reading?
BTW...yep I get the annoying pop-up but click on cancel and it goes away and the picture still displays, no biggie IMHO as long as I have my anti-virus, anti-spam, anti-everything else running, which I do
Assuming a 285/30 tire (around 24.6 in. dia) at 7100 RPMs you were traveling at 179.7 mph. If you know the exact tire size I can plug it in for you. No matter what, that's bookin.
Jim
Can�t remember the size of tires, but at time I had the 18" wheels that came from stock in those models, so I believe tire size was the same as any other 996.
J.Seven
This is a source reference. Confirm exact model applicability in the original material.
