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83 CHECKER
 
Join Date: Jun 2008
Location: Saratoga N.Y.
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How far beyond 7K have you been??

Spun it well beyond the old 6.2, then pushed it beyound 7K, stock 3.0 SC , only 29 K on the engine. I've turned it a good 7.5K and it asked for more??

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Old 12-09-2008, 02:51 PM
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if it is stock wouldn't the rev limiter have kicked in ?
Old 12-09-2008, 02:53 PM
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Just alittle bit more and wait for the explosion!!!!!!!!!!
Old 12-09-2008, 03:54 PM
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Old 12-09-2008, 03:56 PM
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I'll let you do it, thanks. When I pass you it means I just shifted.
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Old 12-09-2008, 04:49 PM
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Considering it looses power after redline the question becomes... Why would you??
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Old 12-09-2008, 05:17 PM
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Stock valve springs were not engineered to perform at those thresholds. Your heading for an expensive lets see how far it will go. i occasionally ran mine up to 7 but really you shouldn't.
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Old 12-09-2008, 05:51 PM
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I'm guessing at somewhere around 11K to 12K.....

Once............
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Old 12-09-2008, 06:15 PM
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probrobly has the eqivelent of 60k on it now
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Old 12-09-2008, 06:33 PM
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I have a red line set in the ECU of 8.2.....! but guess what it is built to handle it!
Old 12-09-2008, 06:36 PM
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Quote:
Originally Posted by robert walsh View Post
Spun it well beyond the old 6.2, then pushed it beyound 7K, stock 3.0 SC , only 29 K on the engine. I've turned it a good 7.5K and it asked for more??
You won't do that for long without paying a very dear price,...

The consequences are utterly catastrophic and leave you with VERY few usable parts.

I'd keep it under 7K unless you spend some $$$$ to make it reliable.
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Old 12-09-2008, 07:22 PM
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Old 12-09-2008, 11:39 PM
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Certainly when you hit the rev limiter it feels like it could could go on a whole lot higher in the rev band - but for power it is really just stupid. Sometimes on the track you could wish to go a little higher rpm's just to avoid shifting up just to shift down again, but that is the only time when I want more rpm's.

I read somewhere that as the earlier cars reved way past 7000, that the walve-train mechanism is built to handle that? But the bigger deplacement engines that followed really doesn't have the cams to give any power higher up the rev-band. And I guess that "if **** hits the fan" way past 7000 rpm's then you'd better get a new engine....!

If one build an engine like an RS/RSR then 7000 rpm's and more should be safe! So these engines have it in them... If I had the money....
Old 12-10-2008, 01:57 AM
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Around 8k in my 69 912, it was so smooooothe!
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Old 12-10-2008, 02:16 AM
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Quote:
Originally Posted by Mark McClure View Post
I have a red line set in the ECU of 8.2.....! but guess what it is built to handle it!

Uh, what does that mean?
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Old 12-10-2008, 02:45 AM
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Quote:
Originally Posted by JohnJL View Post
Uh, what does that mean?
I'm guess he build the engine to handle higher then stock rpms
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Old 12-10-2008, 02:48 AM
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Quote:
Originally Posted by Mark McClure
I have a red line set in the ECU of 8.2.....! but guess what it is built to handle it!


Uh, what does that mean?
It means that I have a rev limit of 8.2k but the engine has all the bits to handle it.....! if I had a stock engine the rev limiter would also be stock!

As many have now pointed out it is a bit silly to push harder than the limit of the valve train.......unless it is a destructive testing excercise.

Mark........
Old 12-10-2008, 03:06 AM
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Quote:
Originally Posted by Ole Petter View Post
Sometimes on the track you could wish to go a little higher rpm's just to avoid shifting up just to shift down again, but that is the only time when I want more rpm's.
Before I really knew better (and before the internets were around) I replaced the stock rev limiting rotor in my '76 2.7 with a rotor from a '73 S (?). The new rotor had a allowed 7300 rpm IIRC. I used to use it. Especially coming out of turn 7 at Road Atlanta in 2nd - the extra rpms came in handy there and many other places.

My stock 2.7 routinely saw 7k+ rpms and never missed a beat. YMMV.
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Old 12-10-2008, 03:27 AM
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Old 12-10-2008, 04:33 AM
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Quote:
Originally Posted by JohnJL View Post
Note to self: Never buy a 1983 SC Red Cab from Saratoga.
..funny.. that is EXACTLY what i was thinking

Old 12-10-2008, 05:03 AM
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