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Rev limiter?

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Old 08-10-2005, 05:06 PM
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MoeJoe
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Question Rev limiter?

I was merging into traffic starting in 1st gear, I looked at the tach just before shifting into 2nd and saw the tach needle in the red zone. I thought that the stock ingnition had a rev limiter built in. The engine seemed like it was ready to keep on reving. I had a small panic attack as I have had my car only a few weeks now. The PO wasn't sure if it had a factory chip or not.
Old 08-10-2005, 05:10 PM
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M758
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stock these cars will hit the rev limit. Aftermarket chips sometimes have a 7000 RPM rev limit or none at all.
Old 08-10-2005, 07:46 PM
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Dave in Chicago
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Engine must be under load for limiter to work, by the way. Otherwise, you kind wind these things up like sewing machines and F1 motors. If it's there, you'll bump it and you'll know it.
Old 08-10-2005, 10:02 PM
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Fishey
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Is the stock revlimiter a fuel cut or an ignition cut on a 944?

Also is there a revlimiter without load? or can you just rev till engine dies?
Old 08-10-2005, 10:53 PM
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eman930
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Im running a Power Prom 2 in my 87 924S with the rev limit removed, they do rev like crazy and its really easy to get way in the red, I wouldnt recommend reving that high
Old 08-11-2005, 01:53 AM
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Bret 944
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With the clutch in I've accidentally hit around 8K RPM before. Not sure if it will just keep going or not. Oops I guess.
Old 08-11-2005, 01:59 AM
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nine-44
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I think a free rev like that, the tach isn't exactly spot on. Without load it will hit the revlimiter, it does seem to go a little past and come back tho. With load it's pretty much on it. I run to red quite a bit, bounce the limiter sometimes. I'm due for valve springs now so I don't go as far up, I get valve float around 5600. I need to do springs before I drop a valve. It could have something to do with the 321K miles on the car and no record of the head ever being off too tho.
Old 08-11-2005, 02:07 AM
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mavfan
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i believe it depends on how far u got into the red zone, u can go about a little more than half way into it b4 the rev limiter kicks in, thats what i've notice. thats only happened to me once though. lol u guys seem to have fun red lining ur cars! haha
Old 08-13-2005, 11:00 AM
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dochranilovich
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In my '84 944 NA it's a fuel pump shut-down that comes on as soon as I hid red-line, load or no load. And it shuts the engine down RIGHT NOW, but only until the revs drop back into the normal range.

Doc



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